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Climate Change Blog

 

E7: San Francisco Bay Shoreline Study

Report E7: San Francisco Bay Shoreline Study - "The purpose of the San Francisco Bay Shoreline Study is to: provide tidal flood protection, restore and enhance tidal marsh and related habitats, and provide recreational and public access opportunities. Initial construction for flood protection is planned for Economic Impact Area 11 (EIA11), which is the urban area of North San Jose and the community of Alviso. . . . Planning efforts for the other EIAs 1-10 are currently ongoing to assess potential tidal vulnerability of the areas behind the existing shoreline levees with three future sea level rise scenarios on a risk and uncertainty basis. The study effort will also evaluate cost/benefit for the preferred alternative of a protective shoreline levee under one percent tidal flood protection with three sea level rise conditions." See also Informational brochure and EIA11 Fact Sheet. (Published June 15, 2015)
Source: Santa Clara Valley Water District
Climate Change Topics: California: Bay Area and Delta / Flooding / Santa Clara Valley Water District / Sea level rise /
(Posted July 31, 2015)

 

Meeting the Challenge of Sea Level Rise in Santa Clara County

Report Meeting the Challenge of Sea Level Rise in Santa Clara County - Conference presented by Congresswoman Anna Eshoo and Assemblyman Rich Gordon. Summary and video from the conference. Slides from presentation by SCVWD's Melanie Richardson on flood risk and sea level rise on the South Bay Shoreline. (Published June 19, 2015)
Climate Change Topics: California: Bay Area and Delta / Flooding / Santa Clara Valley Water District staff presentations / Sea level rise /
(Posted July 31, 2015)

 

Army Corps of Engineers: Efforts to Assess the Impact of Extreme Weather Events

Report Army Corps of Engineers: Efforts to Assess the Impact of Extreme Weather Events - "The Corps has assessed certain water resources infrastructure projects to determine whether they are designed to withstand extreme weather events. Specifically, the Corps has national programs in place to perform risk assessments on dams and levees, as required by law. Unlike the requirements for dams and levees, the Corps is not required to perform systematic, national risk assessments on other types of existing infrastructure, such as hurricane barriers and floodwalls and has not done so. . . . Also, the Corps has performed initial vulnerability assessments for sea level rise on its coastal projects and has begun conducting such assessments at inland watersheds. Unlike federal agencies that have budgets established for broad program activities, most Corps civil works funds are appropriated for specific projects. However, the Corps has not worked with Congress to develop a more stable funding approach, as GAO recommended in September 2010, which could facilitate conducting risk assessments. The Corps partially concurred with this recommendation, stating that it would promote efficient funding. As the frequency and intensity of some extreme weather events are increasing, without performing systematic, national risk assessments on other types of infrastructure, such as hurricane barriers and floodwalls, the Corps will continue to take a piecemeal approach to assessing risk on such infrastructure." (Published July 22, 2015)
Source: United States. Government Accountability Office
Climate Change Topics: Precipitation, Extreme Weather / Water utilities guidance /
(Posted July 30, 2015)

 

Climate-Smart RestorationToolkit: Tools for preparing restoration projects for climate change

Report Climate-Smart RestorationToolkit: Tools for preparing restoration projects for climate change - "Here we provide resources for restoration practitioners interested in designing their projects in a way that prepares them for climate change -- climate-smart restoration." (Point Blue Conservation Science, formerly Point Reyes Bird Observatory) (Published )
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted July 29, 2015)

 

Promoting Technology Innovation for Clean and Safe Water

Report Promoting Technology Innovation for Clean and Safe Water - Describes new technologies for assessing water supply risk and vulnerability, conserving and recovering energy, conserving and reusing water, reducing costs for water monitoring, improving resiliency of infrastructure to impacts of climate change, and improving water quality of watersheds and estuaries. (Published April 7, 2014)
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Water utilities guidance /
(Posted July 29, 2015)

 

State of the Climate in 2014

Report State of the Climate in 2014 - Summary of global climate change. (American Meteorological Society) (Published July 17, 2015)
Climate Change Topics: Global issues, human impacts / Precipitation, Extreme Weather / Temperature /
(Posted July 29, 2015)

 

Water Agency Climate Change Responses

Report Water Agency Climate Change Responses - Brianna Pagan, Long Beach Water Dept., talks about her research on the potential impacts of climate change on water agencies in California. (35-min. video) (Published July 2, 2015)
Climate Change Topics: California: Statewide / California: Water/Flood Protection Districts / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted July 21, 2015)

 

Local officials, water district need to act to protect from rising bay waters, gear up for possible megastorm (Editorial)

News article Local officials, water district need to act to protect from rising bay waters, gear up for possible megastorm (Editorial) (Published July 16, 2015)
Source: Milpitas Post
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted July 16, 2015)

 

Estuarine Fish Communities Respond to Climate Variability over both River and Ocean Basins

Report Estuarine Fish Communities Respond to Climate Variability over both River and Ocean Basins - "Estuaries are dynamic environments at the land-sea interface that are strongly affected by interannual climate variability. Ocean-atmosphere processes propagate into estuaries from the sea, and atmospheric processes over land propagate into estuaries from watersheds. We examined the effects of these two separate climate-driven processes on pelagic and demersal fish community structure along the salinity gradient in the San Francisco Estuary, California, USA. A 33-year data set (1980-2012) on pelagic and demersal fishes spanning the freshwater to marine regions of the estuary suggested the existence of five estuarine salinity fish guilds: limnetic (salinity = 0-1), oligohaline (salinity = 1-12), mesohaline (salinity = 6-19), polyhaline (salinity = 19-28), and euhaline (salinity = 29-32). Climatic effects propagating from the adjacent Pacific Ocean, indexed by the North Pacific Gyre Oscillation (NPGO), affected demersal and pelagic fish community structure in the euhaline and polyhaline guilds. Climatic effects propagating over land, indexed as freshwater outflow from the watershed (OUT), affected demersal and pelagic fish community structure in the oligohaline, mesohaline, polyhaline, and euhaline guilds. The effects of OUT propagated further down the estuary salinity gradient than the effects of NPGO that propagated up the estuary salinity gradient, exemplifying the role of variable freshwater outflow as an important driver of biotic communities in river-dominated estuaries. These results illustrate how unique sources of climate variability interact to drive biotic communities and, therefore, that climate change is likely to be an important driver in shaping the future trajectory of biotic communities in estuaries and other transitional habitats." (Feyrer, R. et al., 2015, Global Change Biology) (Published June 16, 2015)
Source: United States. Geological Survey
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species /
(Posted July 16, 2015)

 

New Study: Heat is Being Stored Beneath the Ocean Surface

News article New Study: Heat is Being Stored Beneath the Ocean Surface (Published July 10, 2015)
Source: U.S. National Aeronautics and Space Administration (NASA)
Climate Change Topics: Temperature /
(Posted July 15, 2015)

 

Increased record-breaking precipitation events under global warming

Report Increased record-breaking precipitation events under global warming - "In the last decade record-breaking rainfall events have occurred in many places around the world causing severe impacts to human society and the environment including agricultural losses and floodings. There is now medium confidence that human-induced greenhouse gases have contributed to changes in heavy precipitation events at the global scale. Here, we present the first analysis of record-breaking daily rainfall events using observational data. We show that over the last three decades the number of record-breaking events has significantly increased in the global mean. Globally, this increase has led to 12 % more record-breaking rainfall events over 1981-2010 compared to those expected in stationary time series. The number of record-breaking rainfall events peaked in 2010 with an estimated 26 % chance that a new rainfall record is due to long-term climate change. This increase in record-breaking rainfall is explained by a statistical model which accounts for the warming of air and associated increasing water holding capacity only. Our results suggest that whilst the number of rainfall record-breaking events can be related to natural multi-decadal variability over the period from 1901 to 1980, observed record-breaking rainfall events significantly increased afterwards consistent with rising temperatures." (Lehmann, J., et al., 2015, Climatic Change) (Published June 7, 2015)
Climate Change Topics: Precipitation, Extreme Weather /
(Posted July 15, 2015)

 

Climate change impacts on extreme events in the United States: an uncertainty analysis

Report Climate change impacts on extreme events in the United States: an uncertainty analysis - "In this study, we analyze changes in extreme temperature and precipitation over the US in a 60-member ensemble simulation of the 21st century with the Massachusetts Institute of Technology (MIT) Integrated Global System Model-Community Atmosphere Model (IGSM-CAM). Four values of climate sensitivity, three emissions scenarios and five initial conditions are considered. The results show a general intensification and an increase in the frequency of extreme hot temperatures and extreme precipitation events over most of the US. Extreme cold temperatures are projected to decrease in intensity and frequency, especially over the northern parts of the US. This study displays a wide range of future changes in extreme events in the US, even simulated by a single climate model. Results clearly show that the choice of policy is the largest source of uncertainty in the magnitude of the changes. The impact of the climate sensitivity is largest for the unconstrained emissions scenario and the implementation of a stabilization scenario drastically reduces the changes in extremes, even for the highest climate sensitivity considered. Finally, simulations with different initial conditions show conspicuously different patterns and magnitudes of changes in extreme events, underlining the role of natural variability in projections of changes in extreme events." (Monier, E. and X. Gao, 2015, Climatic Change) (Published July 1, 2015)
Climate Change Topics: Precipitation, Extreme Weather /
(Posted July 15, 2015)

 

Conserving Biodiversity: Practical Guidance about Climate Change Adaptation Approaches in Support of Land-use Planning

Report Conserving Biodiversity: Practical Guidance about Climate Change Adaptation Approaches in Support of Land-use Planning - "As species’ geographic ranges and ecosystem functions are altered in response to climate change, there is a need to integrate biodiversity conservation approaches that promote natural adaptation into land use planning. Successful conservation will need to embrace multiple climate adaptation approaches, but to date they have not been conveyed in an integrated way to help support immediate conservation planning and action in the face of inherent spatial uncertainty about future conditions. Instead, these multiple approaches are often conveyed as competing or contradictory alternatives, when in fact, they are complementary. We present a framework that synthesizes six promising spatially explicit adaptation approaches for conserving biodiversity. We provide guidance on implementing these adaptation approaches and include case studies that highlight how biodiversity conservation can be used in planning. We conclude with general guidance on choosing appropriate climate adaptation approaches to amend for conservation planning." (Lawler, J. J., et al., 2015, Natural Areas Journal) (Published April 14, 2015)
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Land Use, environmental management systems, and regulation /
(Posted July 15, 2015)

 

Incorporating climate change projections into riparian restoration planning and design

Report Incorporating climate change projections into riparian restoration planning and design - "In this review, we discuss and provide examples of how climate change might be incorporated into restoration planning at the key stages of assessing the project context, establishing restoration goals and design criteria, evaluating design alternatives, and monitoring restoration outcomes. Restoration planners have access to numerous tools to predict future climate, streamflow, and riparian ecology at restoration sites. Planners can use those predictions to assess which species or ecosystem services will be most vulnerable under future conditions, and which sites will be most suitable for restoration. To accommodate future climate and streamflow change, planners may need to adjust methods for planting, invasive species control, channel and floodplain reconstruction, and water management. Given the considerable uncertainty in future climate and streamflow projections, riparian ecological responses, and effects on restoration outcomes, planners will need to consider multiple potential future scenarios, implement a variety of restoration methods, design projects with flexibility to adjust to future conditions, and plan to respond adaptively to unexpected change." (Perry, L. G., et al., 2015, Ecohydrology) (Published June 2, 2015)
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted July 15, 2015)

 

US Army Corps of Engineers Screening-Level Assessment of Projects with Respect to Sea Level Change

Report US Army Corps of Engineers Screening-Level Assessment of Projects with Respect to Sea Level Change - "The report is the first in a series of progressively more detailed screening assessments and detailed assessments of the most vulnerable projects and those with the highest consequences. The screening level assessments were completed using the Comprehensive Evaluation with Respect to Sea Level (CESL) web tool and relies on information developed by other agencies, including the Federal Emergency Management Agency (FEMA), National Oceanic and Atmospheric Administration (NOAA) and the U.S. Geological Survey (USGS). The results of this screening level analysis are providing a foundation for USACE to continue a program of progressively more detailed screening assessments before embarking on detailed assessments of the most vulnerable projects and those with the highest consequences. The CESL tool used in USACE screening-level analyses can be made available to others who wish to perform similar coastal vulnerability assessments." (Published July 8, 2015)
Source: United States. Army Corps of Engineers
Climate Change Topics: Sea level rise /
(Posted July 15, 2015)

 

Ocean warming leads to stronger precipitation extremes

News article Ocean warming leads to stronger precipitation extremes (Published July 13, 2015)
Source: Science Daily
Climate Change Topics: Precipitation, Extreme Weather /
(Posted July 14, 2015)

 

Climate change: Controversial 'cloud brightening' project proposed for Moss Landing

News article Climate change: Controversial 'cloud brightening' project proposed for Moss Landing (Published July 12, 2015)
Source: San Jose Mercury News
Climate Change Topics: Clouds, aerosols, air pollution, ozone, humidity /
(Posted July 13, 2015)

 

Sea Levels Could Rise at Least 20 Feet

News article Sea Levels Could Rise at Least 20 Feet
Related Link: http://srvstar3/reports/Dutton2015.pdf
(Published July 9, 2015)
Source: Climate Central
Climate Change Topics: Sea level rise /
(Posted July 13, 2015)

 

Sea-level rise due to polar ice-sheet mass loss during past warm periods

Report Sea-level rise due to polar ice-sheet mass loss during past warm periods - "Advances in our understanding of polar ice-sheet response to warmer climates have been made through an increase in the number and geographic distribution of sea-level reconstructions, better ice-sheet constraints, and the recognition that several geophysical processes cause spatially complex patterns in sea level. In particular, accounting for glacial isostatic processes helps to decipher spatial variability in coastal sea-level records and has reconciled a number of site-specific sea-level reconstructions for warm periods that have occurred within the past several hundred thousand years. This enables us to infer that during recent interglacial periods, small increases in global mean temperature and just a few degrees of polar warming relative to the preindustrial period resulted in >=6 m of GMSL rise. Mantle-driven dynamic topography introduces large uncertainties on longer time scales, affecting reconstructions for time periods such as the Pliocene (~3 million years ago), when atmospheric CO2 was ~400 parts per million (ppm), similar to that of the present. Both modeling and field evidence suggest that polar ice sheets were smaller during this time period, but because dynamic topography can cause tens of meters of vertical displacement at Earth’s surface on million-year time scales and uncertainty in model predictions of this signal are large, it is currently not possible to make a precise estimate of peak GMSL during the Pliocene." (Dutton, A., et al., 2015, Science) (Published July 10, 2015)
Climate Change Topics: Sea level rise /
(Posted July 13, 2015)

 

Record-breaking heavy rainfall events increased under global warming

News article Record-breaking heavy rainfall events increased under global warming (Published July 8, 2015)
Source: Science Daily
Climate Change Topics: Precipitation, Extreme Weather /
(Posted July 8, 2015)

 

City's CleanPowerSF Program Central to Upcoming Ballot Battle

News article City's CleanPowerSF Program Central to Upcoming Ballot Battle (Published July 7, 2015)
Source: KQED Radio
Climate Change Topics: California: Bay Area and Delta / Community Choice Aggregation (CCA) /
(Posted July 8, 2015)

 

California Climate Science and Data for Water Resources Management

Report California Climate Science and Data for Water Resources Management - Summary of climate change data used by DWR for its water plan update (and potentially useful for local water agencies). (Published June 30, 2015)
Source: California. Dept. of Water Resources
Climate Change Topics: California: Statewide / Energy management and conservation / Sea level rise / Temperature / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted July 2, 2015)

 

專家說舊金山灣區存在水災危險 (article on sea level rise and flooding)

News article 專家說舊金山灣區存在水災危險 (article on sea level rise and flooding) (Published July 1, 2015)
Source: Epoch Times
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted July 1, 2015)

 

Pink salmon risk double dose of acidification, in rivers and sea

News article Pink salmon risk double dose of acidification, in rivers and sea (Published June 29, 2015)
Source: Reuters
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted June 30, 2015)

 

Impending sea-level rise will affect us all (Column)

News article Impending sea-level rise will affect us all (Column) (Published June 29, 2015)
Source: Palo Alto Weekly/Palo Alto Online
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted June 29, 2015)

 

Report: Cities unprepared for sea-level rise: Santa Clara County Civil Grand Jury finds local response is inadequate

News article Report: Cities unprepared for sea-level rise: Santa Clara County Civil Grand Jury finds local response is inadequate (Published June 26, 2015)
Source: Palo Alto Weekly/Palo Alto Online
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted June 26, 2015)

 

Government agencies partner to combat climate change

News article Government agencies partner to combat climate change (Published June 26, 2015)
Source: Water Tech Online
Climate Change Topics: Adaptation / Ecosystems, Habitat, Threatened Species /
(Posted June 26, 2015)

 

More and longer heatwaves result from changing weather pattern, Stanford study says

News article More and longer heatwaves result from changing weather pattern, Stanford study says (Published June 25, 2015)
Source: Contra Costa Times
Climate Change Topics: Temperature /
(Posted June 26, 2015)

 

Atmospheric changes boost temperature extremes

News article Atmospheric changes boost temperature extremes (Published June 25, 2015)
Source: Environmental Research Web
Climate Change Topics: Temperature /
(Posted June 26, 2015)

 

Sea level rise needs proactive solutions (5th letter, from CEO Beau Goldie)

News article Sea level rise needs proactive solutions (5th letter, from CEO Beau Goldie) (Published June 25, 2015)
Source: San Jose Mercury News
Climate Change Topics: California: Bay Area and Delta / Santa Clara Valley Water District / Sea level rise /
(Posted June 25, 2015)

 

2015 Workplan: National Water Program Response to Climate Change

Report 2015 Workplan: National Water Program Response to Climate Change - What the EPA is doing in the areas of "1. water infrastructure; 2. watersheds and wetlands; 3. coastal and ocean waters; 4. water quality; and 5. working with Tribes." (Published June 16, 2015)
Source: United States. Environmental Protection Agency
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Federal Regulations, EPA, Clean Air Act / Water quality / Water supply, changes in supply, snowpack /
(Posted June 25, 2015)

 

Comparison of 2014 Adaptation Plans

Report Comparison of 2014 Adaptation Plans - Compares climate change adaptation plans from many federal agencies. (Published June 10, 2015)
Source: United States. Army Corps of Engineers
Climate Change Topics: Adaptation / Federal Regulations, EPA, Clean Air Act /
(Posted June 25, 2015)

 

Climate Change Threatens Wildflower Diversity in California

News article Climate Change Threatens Wildflower Diversity in California (Published June 23, 2015)
Source: KQED Radio
Climate Change Topics: California: Statewide / Ecosystems, Habitat, Threatened Species /
(Posted June 24, 2015)

 

E.P.A. Warns of High Cost of Climate Change

News article E.P.A. Warns of High Cost of Climate Change (Published June 23, 2015)
Source: New York Times
Climate Change Topics: Federal Regulations, EPA, Clean Air Act / Global issues, human impacts /
(Posted June 24, 2015)

 

UC Davis study finds dry weather threatening California wildflowers

News article UC Davis study finds dry weather threatening California wildflowers (Published June 23, 2015)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Ecosystems, Habitat, Threatened Species /
(Posted June 23, 2015)

 

Experts: Rising sea level needs to be top priority

News article Experts: Rising sea level needs to be top priority (Published June 22, 2015)
Source: Palo Alto Weekly/Palo Alto Online
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted June 23, 2015)

 

California climate plan has inland condemning coastal elitism

News article California climate plan has inland condemning coastal elitism (Published June 23, 2015)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted June 23, 2015)

 

EPA report cites benefits of limiting emissions, climate change

News article EPA report cites benefits of limiting emissions, climate change
Related Link: http://www2.epa.gov/cira
(Published June 23, 2015)
Source: Los Angeles Times
Climate Change Topics: Federal Regulations, EPA, Clean Air Act / Greenhouse gas (GHG) reduction, mitigation /
(Posted June 23, 2015)

 

Local Greenhouse Gas Inventory Tool

Report Local Greenhouse Gas Inventory Tool - "EPA's Local Greenhouse Gas Inventory Tool was developed to help communities across the United States to evaluate their greenhouse gas emissions. Use this tool to compile a greenhouse gas (GHG) inventory for your entire community or for local government operations in particular." (Published )
Source: United States. Environmental Protection Agency
Climate Change Topics: Greenhouse gas (GHG) reduction, mitigation / Models and Tools /
(Posted June 23, 2015)

 

California Central Valley Water Rights in a Changing Climate

Report California Central Valley Water Rights in a Changing Climate - "Climate change and resulting changes in hydrology are already altering -- and are expected in the future to continue to alter -- the timing and amount of water flowing through rivers and streams. As these changes occur, the historical reliability of existing water rights will change. This study evaluates future water rights reliability in the Sacramento-Feather-American river watersheds. . . . Projections of future water rights curtailments show that water rights holders are likely to be curtailed much more frequently, and for significantly longer durations, as we move through the 21st century. Further, many more water rights holders will be affected by curtailment actions in the future. As curtailments last longer and become more common, more water users will have to access other supplies, such as groundwater or water transfers, or will have to fallow land or conserve water in other ways to meet their demands. These activities will likely ratchet up the potential for additional conflicts over water in the Delta watershed." (Schwarz, A. M., 2015, San Francisco Estuary and Watershed Science) (Published June 23, 2015)
Climate Change Topics: California: Bay Area and Delta / Streamflow / Water supply, changes in supply, snowpack /
(Posted June 23, 2015)

 

The future of climate modeling

Report The future of climate modeling - "Recently a number of scientists have proposed substantial changes to the practice of climate modeling, though they disagree over what those changes should be. We provide an overview and critical examination of three leading proposals: the unified approach, the hierarchy approach and the pluralist approach. The unified approach calls for an accelerated development of high-resolution models within a seamless prediction framework. The hierarchy approach calls for more attention to the development and systematic study of hierarchies of related models, with the aim of advancing understanding. The pluralist approach calls for greater diversity in modeling efforts, including, on some of its variants, more attention to empirical modeling. After identifying some of the scientific and institutional challenges faced by these proposals, we consider their expected gains and costs, relative to a business-as-usual modeling scenario. We find the proposals to be complementary, having valuable synergies. But since resource limitations make it unlikely that all three will be pursued, we offer some reflections on more limited changes in climate modeling that seem well within reach and that can be expected to yield substantial benefits." (Katzav, J. and W. S. Parker, 2015, Climatic Change) (Published June 18, 2015)
Climate Change Topics: Models and Tools /
(Posted June 23, 2015)

 

San Francisco Is Really Unprepared for Climate Change

News article San Francisco Is Really Unprepared for Climate Change (Published June 22, 2015)
Source: SF Weekly
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted June 22, 2015)

 

Challenged By Drought, Fire, Earthquake, and Flood, California Departs On New Path

News article Challenged By Drought, Fire, Earthquake, and Flood, California Departs On New Path (Published June 22, 2015)
Source: Circle of Blue
Climate Change Topics: AB 32 / California: Statewide / Drought / Flooding / Water supply, changes in supply, snowpack / Wildfires /
(Posted June 22, 2015)

 

Rising tides in San Francisco Bay demand unified solutions

News article Rising tides in San Francisco Bay demand unified solutions
Related Link: http://srvstar3/reports/GJSealevel.pdf
(Published June 22, 2015)
Source: San Jose Mercury News
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted June 22, 2015)

 

Super El Ninos in response to global warming in a climate model

Report Super El Ninos in response to global warming in a climate model - "Extraordinarily strong El Nino events, such as those of 1982/1983 and 1997/1998, cause havoc with weather around the world, adversely influence terrestrial and marine ecosystems in a number of regions and have major socio-economic impacts. Here we show by means of climate model integrations that El Nino events may be boosted by global warming. An important factor causing El Nino intensification is warming of the western Pacific warm pool, which strongly enhances surface zonal wind sensitivity to eastern equatorial Pacific sea surface temperature anomalies. This in conjunction with larger and more zonally asymmetric equatorial Pacific upper ocean heat content supports stronger and longer lasting El Ninos. The most intense events, termed Super El Ninos, drive extraordinary global teleconnections which are associated with exceptional surface air temperature and rainfall anomalies over many land areas." (Latif, M., 2015, Climatic Change) (Published June 20, 2015)
Climate Change Topics: Precipitation, Extreme Weather /
(Posted June 22, 2015)

 

Sea-Level Rise Policy Guidance

Report Sea-Level Rise Policy Guidance - "The Public Review Draft of the revised Sea Level Rise Policy Guidance document provides an overview of the best available science on sea level rise for California and recommended methodology for addressing sea level rise in Coastal Commission planning and regulatory actions. It is intended to serve as a multi-purpose resource for a variety of audiences and includes a high level of detail on many subjects. Since the document is not specific to a particular geographic location or development intensity, readers should view the content as a menu of options to use only if relevant, rather than a checklist of required actions. " (New draft guidance published June 10, 2015; comments due July 10, 2015) (Published June 10, 2015)
Source: California. Coastal Commission.
Climate Change Topics: California: Statewide / Sea level rise /
(Posted June 18, 2015)

 

Voters may decide in November what clean energy really means

News article Voters may decide in November what clean energy really means (Published June 17, 2015)
Source: San Francisco Chronicle
Climate Change Topics: Community Choice Aggregation (CCA) /
(Posted June 17, 2015)

 

Making Climate Models Available to the Public

News article Making Climate Models Available to the Public (Published June 12, 2015)
Source: U.S. National Aeronautics and Space Administration (NASA)
Climate Change Topics: Models and Tools /
(Posted June 17, 2015)

 

A Slow Rising Emergency -- Sea Level Rise

Report A Slow Rising Emergency -- Sea Level Rise - Santa Clara County Civil Grand Jury report on what the Santa Clara Valley Water District and cities within the county are doing to prepare for sea level rise in San Francisco Bay. (Published June 16, 2015)
Source: Santa Clara County
Climate Change Topics: California: Bay Area and Delta / Santa Clara Valley Water District / Sea level rise /
(Posted June 16, 2015)

 

Clean Energy through Community Choice Aggregation

Report Clean Energy through Community Choice Aggregation - Presentation to Los Altos City Council on the benefits of CCA. (Published March 10, 2015)
Climate Change Topics: Community Choice Aggregation (CCA) /
(Posted June 16, 2015)

 

Potential for Community Choice Electricity in the Heart of Silicon Valley

Report Potential for Community Choice Electricity in the Heart of Silicon Valley - Assessment report for Silicon Valley Community Choice Energy Partnership, which includes Santa Clara County and the cities of Cupertino, Mountain View, and Sunnyvale. Keyword: CCA (Published May 26, 2015)
Climate Change Topics: Community Choice Aggregation (CCA) /
(Posted June 16, 2015)

 

Silicon Valley Community Choice Energy (SVCCE) Partnership

Report Silicon Valley Community Choice Energy (SVCCE) Partnership - Consortium of local governments planning for community choice aggregation in Santa Clara County. (Published )
Climate Change Topics: Community Choice Aggregation (CCA) /
(Posted June 16, 2015)

 

America's water risk: Current demand and climate variability

Report America's water risk: Current demand and climate variability - "A new indicator of drought-induced water stress is introduced and applied at the county level in the USA. Unlike most existing drought metrics, we directly consider current daily water demands and renewable daily water supply to estimate the potential stress. Water stress indices developed include the Normalized Deficit Cumulated to represent multiyear droughts by computing the maximum cumulative deficit between demand and supply over the study period (1949-2009) and the Normalized Deficit Index representing drought associated with maximum cumulative deficit each year. These water stress indices map directly to storage requirements needed to buffer multiyear and within-year climate variability and can reveal the dependence on exogenous water transferred by rivers/canals to the area. Future climate change and variability can be also incorporated into this framework to inform climate-driven drought for additional storage development and potential applications of water trading across counties." (Devineni, N., et al., 2015, Geophysical Research Letters) (Published April 9, 2015)
Climate Change Topics: Drought / Water supply, changes in supply, snowpack /
(Posted June 11, 2015)

 

Predicting tree mortality

News article Predicting tree mortality (Published June 9, 2015)
Source: Science Daily
Climate Change Topics: California: Statewide / Ecosystems, Habitat, Threatened Species /
(Posted June 9, 2015)

 

NASA Releases Detailed Global Climate Change Projections

News article NASA Releases Detailed Global Climate Change Projections (Published June 9, 2015)
Source: U.S. National Aeronautics and Space Administration (NASA)
Climate Change Topics: Models and Tools / Precipitation, Extreme Weather / Temperature /
(Posted June 9, 2015)

 

NEX Global Daily Downscaled Climate Projections

Report NEX Global Daily Downscaled Climate Projections - "The NASA Earth Exchange Global Daily Downscaled Projections (NEX-GDDP) dataset is comprised of downscaled climate scenarios for the globe that are derived from the General Circulation Model (GCM) runs conducted under the Coupled Model Intercomparison Project Phase 5 (CMIP5) and across two of the four greenhouse gas emissions scenarios known as Representative Concentration Pathways (RCPs). The CMIP5 GCM runs were developed in support of the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC AR5). The NEX-GDDP dataset includes downscaled projections for RCP 4.5 and RCP 8.5 from the 21 models and scenarios for which daily scenarios were produced and distributed under CMIP5. Each of the climate projections includes daily maximum temperature, minimum temperature, and precipitation for the periods from 1950 through 2100. The spatial resolution of the dataset is 0.25 degrees (~25 km x 25 km)." The dataset is available at https://cds.nccs.nasa.gov/nex-gddp/. (Published June 9, 2015)
Climate Change Topics: Models and Tools / Precipitation, Extreme Weather / Temperature /
(Posted June 9, 2015)

 

Climate Registry for the Assessment of Vulnerability (CRAVe)

Report Climate Registry for the Assessment of Vulnerability (CRAVe) - Database of climate vulnerability assessments for species and ecosystems. Most studies are from USGS or universities. (Published May 12, 2015)
Source: United States. Geological Survey
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted June 9, 2015)

 

EPA climate rules expected soon; senators write to EPA and DOE

News article EPA climate rules expected soon; senators write to EPA and DOE (Published June 7, 2015)
Source: American Water Works Association
Climate Change Topics: Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation / Water utilities guidance /
(Posted June 8, 2015)

 

California keeps talking climate change, but who's listening?

News article California keeps talking climate change, but who's listening? (Published June 8, 2015)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted June 8, 2015)

 

Upon closer look, a global warming hiatus is ruled out, U.S. scientists say

News article Upon closer look, a global warming hiatus is ruled out, U.S. scientists say
Related Link: http://www.sciencemag.org/content/early/2015/06/05/science.aaa5632.abstract
(Published June 5, 2015)
Source: Los Angeles Times
Climate Change Topics: Research / Temperature /
(Posted June 5, 2015)

 

Possible artifacts of data biases in the recent global surface warming hiatus

Report Possible artifacts of data biases in the recent global surface warming hiatus - "Much study has been devoted to the possible causes of an apparent decrease in the upward trend of global surface temperatures since 1998, a phenomenon that has been dubbed the global warming 'hiatus.' Here we present an updated global surface temperature analysis that reveals that global trends are higher than reported by the IPCC, especially in recent decades, and that the central estimate for the rate of warming during the first 15 years of the 21st century is at least as great as the last half of the 20th century. These results do not support the notion of a 'slowdown' in the increase of global surface temperature. " (Karl, T. R., et al., 2015, Science) (Published June 4, 2015)
Climate Change Topics: Temperature /
(Posted June 5, 2015)

 

California lawmakers boost climate change bills

News article California lawmakers boost climate change bills (Published June 4, 2015)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation /
(Posted June 4, 2015)

 

Ecosystem-Based Management Tools Network

Report Ecosystem-Based Management Tools Network - Includes information about tools (models, software), projects, organizations, and practitioners involved in coastal and marine ecosystems. (Published )
Climate Change Topics: Adaptation / Ecosystems, Habitat, Threatened Species / Models and Tools /
(Posted June 3, 2015)

 

Climate Change Adaptation in the United States Federal Natural Resource Science and Management Agencies: A Synthesis

Report Climate Change Adaptation in the United States Federal Natural Resource Science and Management Agencies: A Synthesis - "Federal agencies with responsibility for natural resource management are mandated to consider climate change in planning and projects, and to begin preparing for the effects of climate change. Federal agencies are making significant progress in climate change adaptation, although lack of financial resources has slowed implementation of climate-focused activities. Currently, most agencies have broad-scale strategic plans that describe approaches and priorities for climate change in general and for adaptation in particular. Although adequate scientific databases, analytical tools, and decision support aids are generally available to assist with adaptation, on-the-ground projects and plans relevant to resource management have been implemented unevenly across agencies. . . . At the management-unit scale, much of the progress to date has occurred where motivated resource managers and scientists have collaborated to develop climate change vulnerability assessments and adaptation options. These science-management partnerships provide a model for how adaptation can move forward across large landscapes, and can be emulated by others who want to begin the process. Because sustainable resource management typically encompasses restoration and building of resilience in ecosystems, agencies can build on existing practices, adjusting them as necessary to address risks posed by a changing climate." (Published April 28, 2015)
Source: United States. Global Change Research Program
Climate Change Topics: Adaptation / Ecosystems, Habitat, Threatened Species /
(Posted May 22, 2015)

 

How climate change is making California's epic drought worse

News article How climate change is making California's epic drought worse (Published May 21, 2015)
Source: Phys.Org
Climate Change Topics: California: Statewide / Drought /
(Posted May 21, 2015)

 

Sea-level rise accelerated over the past two decades, research finds

News article Sea-level rise accelerated over the past two decades, research finds
Related Link: http://www.nature.com/nclimate/journal/vaop/ncurrent/full/nclimate2635.html
(Published May 21, 2015)
Source: Environmental Research Web
Climate Change Topics: Sea level rise /
(Posted May 21, 2015)

 

Climate Change Adaptation Introductory Training for Local Officials

Report Climate Change Adaptation Introductory Training for Local Officials - Deals with effects of climate change (such as rising temperatures, changing precipitation, increased drought and wildfires, and sea level rise) and local communities' vulnerabilities (stormwater, wastewater, water supply, etc.). Takes about 30 minutes to complete. (Published May 6, 2015)
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Drought / Sea level rise / Water quality / Wildfires /
(Posted May 21, 2015)

 

Climate change could cause cold-blooded animals' thermal tolerance to shrink

News article Climate change could cause cold-blooded animals' thermal tolerance to shrink (Published May 19, 2015)
Source: Science Daily
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted May 20, 2015)

 

Governor Brown Signs International Agreement to Reduce Greenhouse Gas Emissions

News article Governor Brown Signs International Agreement to Reduce Greenhouse Gas Emissions (Published May 19, 2015)
Source: Association of California Water Agencies
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted May 20, 2015)

 

US West's power grid must be prepared for impacts of climate change

News article US West's power grid must be prepared for impacts of climate change (Published May 18, 2015)
Source: Science Daily
Climate Change Topics: Energy management and conservation /
(Posted May 19, 2015)

 

New Approaches for Responding to Climate Change in the San Francisco Bay-Delta

Report New Approaches for Responding to Climate Change in the San Francisco Bay-Delta - Series of 12 videos from a workshop on effects on the Bay-Delta ecosystem. (May not work with Internet Explorer 9) (Published May 6, 2015)
Source: University of California, Davis
Climate Change Topics: Adaptation / California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Flooding / Land Use, environmental management systems, and regulation / Sea level rise /
(Posted May 19, 2015)

 

UCLA report shows 75 percent of Los Angeles County water systems vulnerable to drought, other challenges

News article UCLA report shows 75 percent of Los Angeles County water systems vulnerable to drought, other challenges
Related Link: http://164.67.121.27/files/Downloads/luskincenter/water/Water_Atlas.pdf
(Published May 14, 2015)
Source: UCLA
Climate Change Topics: California: Statewide / California: Water/Flood Protection Districts / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted May 18, 2015)

 

Hope can't solve water supply problems (Opinion)

News article Hope can't solve water supply problems (Opinion) (Published May 14, 2015)
Source: Morgan Hill Times
Climate Change Topics: California: Bay Area and Delta / Drought / Water supply, changes in supply, snowpack /
(Posted May 14, 2015)

 

'Sea level rise rates are speeding up': The terrifying threat facing coastal cities

News article 'Sea level rise rates are speeding up': The terrifying threat facing coastal cities
Related Link: http://www.nature.com/nclimate/journal/vaop/ncurrent/full/nclimate2635.html
(Published May 12, 2015)
Source: Salon.com
Climate Change Topics: Sea level rise /
(Posted May 14, 2015)

 

Unabated global mean sea-level rise over the satellite altimeter era

Report Unabated global mean sea-level rise over the satellite altimeter era - "The rate of global mean sea-level (GMSL) rise has been suggested to be lower for the past decade compared with the preceding decade as a result of natural variability, with an average rate of rise since 1993 of +3.2 plus or minus 0.4 mm yr-1. However, satellite-based GMSL estimates do not include an allowance for potential instrumental drifts (bias drift). . . . Applying the bias drift corrections has two implications. First, the GMSL rate (1993 to mid-2014) is systematically reduced to between +2.6 plus or minus 0.4 mm yr-1 and +2.9 plus or minus 0.4 mm yr-1, depending on the choice of VLM applied. . . . Second, in contrast to the previously reported slowing in the rate during the past two decades, our corrected GMSL data set indicates an acceleration in sea-level rise (independent of the VLM used), which is of opposite sign to previous estimates and comparable to the accelerated loss of ice from Greenland and to recent projections, and larger than the twentieth-century acceleration." (Watson, C. S., et al., 2015, Nature Climate Change) (Published May 11, 2015)
Climate Change Topics: Sea level rise /
(Posted May 14, 2015)

 

Embracing Uncertainty: A Case Study Examination of How Climate Change is Shifting Water Utility Planning

Report Embracing Uncertainty: A Case Study Examination of How Climate Change is Shifting Water Utility Planning - Case studies from water utilities in the U.S. and Australia. Among the findings: "The utilities interviewed are bringing climate considerations into a variety of their decision processes; Climate change projections are not predictions of the future; The relationship between the change in climate and the change in water availability is not linear. Therefore, climate projections alone do not provide adequate information for good decision-making; Planning methods and tools need to allow utilities to plan for more than one future; Public involvement is now a top priority." (Published May 12, 2015)
Source: Water Utility Climate Alliance
Climate Change Topics: Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted May 13, 2015)

 

Tracking Coastal Adaptation: Implementing California's Innovative Sea Level Rise Planning Database

Report Tracking Coastal Adaptation: Implementing California's Innovative Sea Level Rise Planning Database - "This paper . . .focuses on Assembly Bill 2516, an innovative new law that requires California to develop an online database of actions taken by state agencies and selected other entities to plan for sea level rise. With input from a team of coastal adaptation experts, co-authors Megan Herzog, Susanne Moser, and Sarah Newkirk offer recommendations on the content, format and functionality of the new database, including potential survey questions and indicators to incorporate. The report suggests A.B. 2516 should be seen as a planning tool that can play an integral role in the development and promotion of coordinated, integrated, and effective state policy to protect California's coasts from sea level rise. These recommendations may be useful to other states, policymakers, researchers, and private entities seeking to enhance the compilation, publication, and analysis of information about climate change adaptation." (Published May 12, 2015)
Climate Change Topics: Adaptation / California: Statewide / Sea level rise /
(Posted May 12, 2015)

 

Actionable Science in Practice: Co-producing Climate Change Information for Water Utility Vulnerability Assessments

Report Actionable Science in Practice: Co-producing Climate Change Information for Water Utility Vulnerability Assessments - Four water utilities worked on downscaling climate models in order to determine their vulnerabilities. (Published April 27, 2015)
Source: Water Utility Climate Alliance
Climate Change Topics: Adaptation / Precipitation, Extreme Weather / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted May 8, 2015)

 

Optimization of Energy and Water Quality Management Systems for Drinking Water Utilities

Report Optimization of Energy and Water Quality Management Systems for Drinking Water Utilities - "This project addressed the reduction of greenhouse gases (GHGs) while optimizing the level of energy efficiency at drinking water facilities. Specifically, this study synthesized and assessed the growing body of information on the Energy and Water Quality Management System (EWQMS) framework; developed a functional specification for a GHG module that will be incorporated into EWQMS software; and implemented a pilot version of the modified EWQMS software at water utilities. Research partner: California Energy Commission. Published in 2015. This report may be a preliminary version. The California Energy Commission is reviewing the draft of the final project report for final editing and will post the final report on their website sometime in 2015." (Published March 31, 2015)
Climate Change Topics: California: Statewide / Energy management and conservation / Water utilities guidance /
(Posted May 7, 2015)

 

Head of Tide

Report Head of Tide - "Within the tributaries that drain to San Francisco Bay, there exists a transition between fluvial and tidal processes and conditions. The upstream boundary of this transition, called the head of tide (HoT) zone, can be defined as the inland limit of the effects of average high tides on tributary flows and water surface elevation. This zone is characterized by unique and diverse assemblages of plants and animals, cultural resources, as well as a vulnerability to out-of-channel flooding during high river flow and high tide conditions. As many Bay Area municipalities are built near the HoT zone, there is a growing concern about managing the flooding risk as well as the aquatic resources in the HoT zone for current conditions and future conditions when rapid sea level rise causes the HoT zone to migrate inland. The first step in developing effective management strategies needs to be creating a process, or protocol, for determining where the HoT zone is now and where it will likely be in the future." (Published August 25, 2014)
Source: San Francisco Estuary Institute
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Flooding / Sea level rise /
(Posted May 6, 2015)

 

White House: Prepare for climate change in infrastructure planning

News article White House: Prepare for climate change in infrastructure planning (Published May 5, 2015)
Source: The Hill
Climate Change Topics: Federal Regulations, EPA, Clean Air Act /
(Posted May 5, 2015)

 

Fire and Climate Change in California: Changes in the Distribution and Frequency of Fires in Climates of the Future and Recent Past (1911-2099)

Report Fire and Climate Change in California: Changes in the Distribution and Frequency of Fires in Climates of the Future and Recent Past (1911-2099) - "This research presents just one method of proposing a future of fire and includes many caveats and assumptions. Using statistical models, we relate the probability of burning in 1080-m landscapes over a 30-year baseline period of 1971-2000 to climate variables for the same period. These climate variables aim to represent spatial variation in vegetation growth conditions and the seasonal dryness necessary for burning. . . . We quantify how the risk of relatively long-term tendency for burning might change with climate over the next 100 years based on projections from two Global Climate Models and two emissions scenarios. Model outcomes suggest varying degrees of increased future fire activity in more productive regions of California; however by 2070-2099, the two GCMs selected for the study disagree in the polarity in response for drier, less productive regions. The second component of this study is retrospective. We test the temporal transferability of baseline models by back-casting using 1971-2000 model parameters but incorporating climate and development data from 1941-1970." (Krawchuk, M. and M. Moritz, 2012) (Published July 31, 2012)
Source: California. Energy Commission
Climate Change Topics: California: Statewide / Wildfires /
(Posted May 5, 2015)

 

Center for Climate Strategies Adaptation Guidebook: Comprehensive Climate Action

Report Center for Climate Strategies Adaptation Guidebook: Comprehensive Climate Action - "Includes a catalogue of adaptation actions, detailed review of state and local adaptation plans and comprehensive methodology and supporting templates for sub national adaptation planning. The Adaptation Guidebook complements the step-based methodology CCS applies to mitigation work, and if applied consecutively, will have progressive impact in advanced climate planning and action." (Published December 21, 2011)
Climate Change Topics: Adaptation /
(Posted May 5, 2015)

 

Extreme weather already on increase due to climate change, study finds

News article Extreme weather already on increase due to climate change, study finds (Published April 30, 2015)
Source: Environmental Research Web
Climate Change Topics: Precipitation, Extreme Weather /
(Posted May 1, 2015)

 

Governor Brown's New Climate Offensive in Five Jerryesque Quotes

News article Governor Brown's New Climate Offensive in Five Jerryesque Quotes (Published April 30, 2015)
Source: KQED Radio
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted May 1, 2015)

 

Climate change could wipe out 16 percent of world's species, research finds Climate change could wipe out 16 percent of world's species, research finds

News article Climate change could wipe out 16 percent of world's species, research finds Climate change could wipe out 16 percent of world's species, research finds (Published May 1, 2015)
Source: Sacramento Bee
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted May 1, 2015)

 

Future of our coasts: The potential for natural and hybrid infrastructure to enhance the resilience of our coastal communities, economies and ecosystems

Report Future of our coasts: The potential for natural and hybrid infrastructure to enhance the resilience of our coastal communities, economies and ecosystems - "There is substantial evidence that natural infrastructure (i.e., healthy ecosystems) and combinations of natural and built infrastructure ('hybrid' approaches) enhance coastal resilience by providing important storm and coastal flooding protection, while also providing other benefits. There is growing interest in the U.S., as well as around the world, to use natural infrastructure to help coastal communities become more resilient to extreme events and reduce the risk of coastal flooding. Here we highlight strengths and weaknesses of the coastal protection benefits provided by built infrastructure, natural ecosystems, and the innovative opportunities to combine the two into hybrid approaches for coastal protection. We also examine some case studies where hybrid approaches are being implemented to improve coastal resilience as well as some of the policy challenges that can make implementation of these approaches more difficult. . . . Based on this analysis, we conclude that coastal communities and other decision makers need better information in order to incorporate ecosystem protection and restoration into coastal resilience planning efforts. As additional projects are developed, it is important to capitalize on every opportunity to learn more about the cost of natural and hybrid infrastructure projects, the value of the storm and erosion protection benefits provided, and the full suite of co-benefits provided by healthy coastal ecosystems. We highlight top priorities for research, investment in, and application of natural and hybrid approaches. These data are critical to facilitate adoption of these approaches in planning and decision-making at all levels to enhance the resilience of our coasts." (Sutton-Grier, A., et al., 2015, Environmental Science and Policy) (Published April 28, 2015)
Climate Change Topics: Adaptation / Flooding / Sea level rise /
(Posted April 30, 2015)

 

California's greenhouse house gas emission targets are getting tougher

News article California's greenhouse house gas emission targets are getting tougher (Published April 29, 2015)
Source: Los Angeles Times
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted April 29, 2015)

 

Gov. Jerry Brown issues aggressive plan to slash California greenhouse gases by 2030

News article Gov. Jerry Brown issues aggressive plan to slash California greenhouse gases by 2030 (Published April 29, 2015)
Source: Associated Press
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted April 29, 2015)

 

Experts say extreme heat tied to people

News article Experts say extreme heat tied to people (Published April 28, 2015)
Source: Associated Press
Climate Change Topics: Precipitation, Extreme Weather / Temperature /
(Posted April 28, 2015)

 

Exclusive: Obama Tells Us What's to Come on Climate, Drought

News article Exclusive: Obama Tells Us What's to Come on Climate, Drought (Published April 23, 2015)
Source: National Geographic
Climate Change Topics: California: Statewide / Drought / Greenhouse gas (GHG) reduction, mitigation /
(Posted April 24, 2015)

 

DOI, EPA, NOAA announce Resilient Lands and Waters Initiative to prepare natural resources for climate change

News article DOI, EPA, NOAA announce Resilient Lands and Waters Initiative to prepare natural resources for climate change (Published April 21, 2015)
Source: U.S. Environmental Protection Agency
Climate Change Topics: Drought / Ecosystems, Habitat, Threatened Species / Sea level rise /
(Posted April 23, 2015)

 

Amid California's Historic Drought, a Scientist Digs for Answers

News article Amid California's Historic Drought, a Scientist Digs for Answers (Published April 22, 2015)
Source: Inside Climate News
Climate Change Topics: California: Statewide / Drought /
(Posted April 23, 2015)

 

'New normal': Scientists predict less rain from here on out

News article 'New normal': Scientists predict less rain from here on out (Published April 18, 2015)
Source: San Francisco Chronicle
Climate Change Topics: California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted April 23, 2015)

 

The influence of multiyear drought on the annual rainfall-runoff relationship: An Australian perspective

Report The influence of multiyear drought on the annual rainfall-runoff relationship: An Australian perspective - "Most current long-term (decadal and longer) hydrological predictions implicitly assume that hydrological processes are stationary even under changing climate. However, in practice, we suspect that changing climatic conditions may affect runoff generation processes and cause changes in the rainfall-runoff relationship. . . . The results demonstrate that protracted drought led to a significant shift in the rainfall-runoff relationship in ~44% of the catchment-dry periods studied. The shift led to less annual runoff for a given annual rainfall, compared with the historical relationship. We explore linkages between cases where statistically significant changes occurred and potential explanatory factors, including catchment properties and characteristics of the dry period (e.g., length, precipitation anomalies). We find that long-term drought is more likely to affect transformation of rainfall to runoff in drier, flatter, and less forested catchments. Understanding changes in the rainfall-runoff relationship is important for accurate streamflow projections and to help develop adaptation strategies to deal with multiyear droughts." (Saft, M., et al., 2015, Water Resources Research) (Published April 17, 2015)
Climate Change Topics: Drought / Streamflow / Water supply, changes in supply, snowpack /
(Posted April 21, 2015)

 

Surviving the Storm

Report Surviving the Storm - Report concludes that the Bay Area is not prepared for a 150-year extreme storm event, which could cause widespread flooding in low-lying areas. Climate change makes such storms more likely. (Bay Council) (Published April 13, 2015)
Climate Change Topics: California: Bay Area and Delta / Flooding / Precipitation, Extreme Weather / Sea level rise /
(Posted April 20, 2015)

 

Twelve years of satellite data help decode climate change

News article Twelve years of satellite data help decode climate change (Published April 14, 2015)
Source: U.S. National Aeronautics and Space Administration (NASA)
Climate Change Topics: Clouds, aerosols, air pollution, ozone, humidity /
(Posted April 16, 2015)

 

In California, a Wet Era May Be Ending

News article In California, a Wet Era May Be Ending (Published April 14, 2015)
Source: New York Times
Climate Change Topics: California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted April 14, 2015)

 

Building the Knowledge Base for Climate Resiliency: New York City Panel on Climate Change 2015 Report

Report Building the Knowledge Base for Climate Resiliency: New York City Panel on Climate Change 2015 Report - "Each year, the NPCC reviews recent scientific data on climate change and its potential impacts, and makes recommendations on climate projections for the coming decades to the end of the century. This volume is a continuation of the NPCC assessment process that began in 2008, with some significant advances that reflect the growing sophistication of climate science research and the evolving policy agenda to which it must respond. The report provides the City of New York with projections of its climate to the end of the century, both static and dynamic coastal storm surge modeling, and next steps in the development of an indicators and monitoring system for climate change impacts and adaptation. The assessment process is innovative because it looks beyond critical infrastructure and its vulnerability to climate change, and more directly focuses on what a more dynamic climate will mean for the everyday experience of the city's residents." (Published February 1, 2015)
Climate Change Topics: Flooding / Precipitation, Extreme Weather / Sea level rise / Temperature /
(Posted April 14, 2015)

 

California's drought and the weird warm 'blob' in the Pacific that may be fueling it

News article California's drought and the weird warm 'blob' in the Pacific that may be fueling it (Published April 10, 2015)
Source: Washington Post
Climate Change Topics: California: Statewide / Drought / Temperature /
(Posted April 10, 2015)

 

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