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Climate Change Blog

 

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)

 

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 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)

 

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)

 

Scientists: State drought likely to worsen; Stanford scientists say dry years and warm conditions likely to lead to severe drought

News article Scientists: State drought likely to worsen; Stanford scientists say dry years and warm conditions likely to lead to severe drought (Published April 8, 2015)
Source: Palo Alto Weekly/Palo Alto Online
Climate Change Topics: California: Statewide / Drought /
(Posted April 9, 2015)

 

In Parched California, Innovation, Like Water, Has Limits

News article In Parched California, Innovation, Like Water, Has Limits (Published April 8, 2015)
Source: New York Times
Climate Change Topics: Adaptation / Agriculture / California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted April 8, 2015)

 

Near-term acceleration in the rate of temperature change

Report Near-term acceleration in the rate of temperature change - "Anthropogenically driven climate changes, which are expected to impact human and natural systems, are often expressed in terms of global-mean temperature. The rate of climate change over multi-decadal scales is also important, with faster rates of change resulting in less time for human and natural systems to adapt. We find that present trends in greenhouse-gas and aerosol emissions are now moving the Earth system into a regime in terms of multi-decadal rates of change that are unprecedented for at least the past 1,000 years. The rate of global-mean temperature increase in the CMIP5 archive over 40-year periods increases to 0.25 plus or minus 0.05 degrees C (1 standard deviation) per decade by 2020, an average greater than peak rates of change during the previous one to two millennia. Regional rates of change in Europe, North America and the Arctic are higher than the global average. Research on the impacts of such near-term rates of change is urgently needed." (Smith, S. J., et al., 2015, Nature Climate Change) (Published March 9, 2015)
Climate Change Topics: Temperature /
(Posted April 8, 2015)

 

2014 Highlights of Progress: Responses to Climate Change by the National Water Program

Report 2014 Highlights of Progress: Responses to Climate Change by the National Water Program - EPA's work in water infrastructure, watersheds and wetlands, coastal waters, and water quality. (Published March 25, 2015)
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Drought / Ecosystems, Habitat, Threatened Species / Water quality / Water utilities guidance /
(Posted April 8, 2015)

 

Sonoma County Water Agency hits clean energy goal

News article Sonoma County Water Agency hits clean energy goal (Published April 7, 2015)
Source: Santa Rosa Press Democrat
Climate Change Topics: California: Bay Area and Delta / California: Water/Flood Protection Districts / Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation / Renewable energy /
(Posted April 7, 2015)

 

Clean Energy Opportunities in California's Water Sector

Report Clean Energy Opportunities in California's Water Sector - "By investing in clean, renewable energy sources, water utilities can better adapt to changing conditions while creating new revenue streams, protecting their customers from electricity price volatility, and enhancing the state's efforts to reduce global warming pollution." (Union of Concerned Scientists) (Published April 6, 2015)
Climate Change Topics: California: Statewide / Energy management and conservation / Water utilities guidance / Renewable energy / California: Water/Flood Protection Districts /
(Posted April 7, 2015)

 

Climate change to make California drought worse, report says

News article Climate change to make California drought worse, report says
Related Link: http://riskybusiness.org/california-report/pdf
(Published April 3, 2015)
Source: San Francisco Chronicle
Climate Change Topics: California: Statewide / Drought /
(Posted April 6, 2015)

 

From Boom to Bust? Climate Change in the Golden State

Report From Boom to Bust? Climate Change in the Golden State - "This report focuses on California and explores some of the likely economic consequences to the state of continuing on our current greenhouse gas emissions pathway, with no significant new national policy or global action to mitigate climate change. . . . These risks include: A dramatic increase in extreme heat across the state, especially in the San Joaquin Valley and Inland South regions . . . Changes in the timing, amount, and type of precipitation in California, which could lead to increased drought and flooding and put the reliability of the state's water supply at risk . . . Widespread losses of coastal property and infrastructure due to sea-level rise along the California coast . . . Shifting agricultural patterns and crop yields, with distinct threats to California's varied crop mix of fruits, vegetables, nuts, and other highly valuable commodities . . . Increasing electricity demand combined with reduced system capacity, leading to higher energy costs . . . Higher heat-related mortality, declining labor productivity, and worsened air quality." (Risky Business) (Published April 2, 2015)
Climate Change Topics: Agriculture / California: Statewide / Energy management and conservation / Flooding / Global issues, human impacts / Precipitation, Extreme Weather / Sea level rise / Temperature / Water supply, changes in supply, snowpack / Sea-Level and Flood Risks: FEMA or Insurance Industry Responses / Water-Supply Related Risks: Insurance Industry Responses /
(Posted April 6, 2015)

 

California Drought Is Worsened by Global Warming, Scientists Say

News article California Drought Is Worsened by Global Warming, Scientists Say (Published April 2, 2015)
Source: New York Times
Climate Change Topics: California: Statewide / Drought /
(Posted April 2, 2015)

 

Model helps city planners prepare to weather large storms

News article Model helps city planners prepare to weather large storms (Published March 31, 2015)
Source: Science Daily
Climate Change Topics: Precipitation, Extreme Weather /
(Posted April 1, 2015)

 

Adaptation Strategies for Water Utilities

Report Adaptation Strategies for Water Utilities - Helps utilities prepare for challenges such as drought, water quality degradation, floods, ecosystem changes, and changes in service demand and use. (Part of EPA's Climate Ready Water Utilities program) Updated in 2015 to include updated climate models, updated case studies, green infrastructure, energy management, and water demand management. (Published March 4, 2015)
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Drought / Energy management and conservation / Flooding / Precipitation, Extreme Weather / Sea level rise / Water quality / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted April 1, 2015)

 

California Climate Data Archive (CalClim)

Report California Climate Data Archive (CalClim) - Temperature and precipitation data. Calclim is sponsored by the California Energy Commission and is a joint effort between the Scripps Institute of Oceanography and the Western Regional Climate Center. (Published )
Climate Change Topics: California: Statewide / Models and Tools / Precipitation, Extreme Weather / Temperature /
(Posted April 1, 2015)

 

California's Water

Report California's Water - Updated report on water issues. (April 2015) (Published April 1, 2015)
Source: Public Policy Institute of California
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted April 1, 2015)

 

Home on the California Range, Year 2100: Land Use and Climate Change Could Impact Wildlife, Water Supplies

News article Home on the California Range, Year 2100: Land Use and Climate Change Could Impact Wildlife, Water Supplies (Published March 25, 2015)
Source: U.S. Geological Survey
Climate Change Topics: California: Statewide / Ecosystem Services and Climate Change / Ecosystems, Habitat, Threatened Species / Land Use, environmental management systems, and regulation /
(Posted March 26, 2015)

 

In a warmer world, researchers say climate change is intensifying California's water crisis

News article In a warmer world, researchers say climate change is intensifying California's water crisis (Published March 24, 2015)
Source: KALW
Climate Change Topics: California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted March 25, 2015)

 

Climate change and California drought in the 21st century

Report Climate change and California drought in the 21st century - "Recent analyses have thus established the 'fingerprint' of anthropogenic climate change in an increasingly diverse array of meteorological and hydrological phenomena around the world, from heat waves to coastal damages during extreme tides and storms, flooding from more intense precipitation events, and severe drought. In a new study published in PNAS, Diffenbaugh et al. now add weight to the accumulating evidence that anthropogenic climatic changes are already influencing the frequency, magnitude, and duration of drought in California. The authors show that the increasing co-occurrence of dry years with warm years raises the risk of drought despite limited evidence of a trend in precipitation itself, highlighting the critical role of elevated temperatures in altering water availability and increasing overall drought intensity and impact." (Mann, M. E. and P. H. Gleick, 2015, Proceedings of the National Academy of Sciences) (Published March 23, 2015)
Climate Change Topics: California: Statewide / Drought /
(Posted March 24, 2015)

 

San Jose's general plan imperiled by greenhouse gas lawsuit

News article San Jose's general plan imperiled by greenhouse gas lawsuit (Published March 23, 2015)
Source: Silicon Valley Business Journal
Climate Change Topics: California: Bay Area and Delta / Land Use, environmental management systems, and regulation /
(Posted March 23, 2015)

 

San Lorenzo: Environmentally friendly levee could protect against sea level rise

News article San Lorenzo: Environmentally friendly levee could protect against sea level rise (Published March 18, 2015)
Source: Contra Costa Times
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted March 20, 2015)

 

New Report Reveals Drought Increases Energy Costs and Climate-Changing Pollution

News article New Report Reveals Drought Increases Energy Costs and Climate-Changing Pollution (Published March 17, 2015)
Source: Pacific Institute
Climate Change Topics: California: Statewide / Drought / Energy management and conservation / Greenhouse gas (GHG) increases /
(Posted March 18, 2015)

 

Impacts of California's Ongoing Drought: Hydroelectricity Generation

Report Impacts of California's Ongoing Drought: Hydroelectricity Generation - "Our analysis find[s] that during the three years ending in October 2014 (the end of the 2014 'water year'), the cost to California ratepayers of reduced hydroelectricity production and the use of additional natural gas was approximately $1.4 billion dollars. The additional combustion of fossil fuels for electric generation caused an eight percent increase in the release of carbon dioxide from California power plants." (Published March 17, 2015)
Source: Pacific Institute
Climate Change Topics: California: Statewide / Drought / Energy management and conservation / Greenhouse gas (GHG) increases /
(Posted March 18, 2015)

 

Heat is on to slow down faster rise in temperatures

News article Heat is on to slow down faster rise in temperatures (Published March 16, 2015)
Source: Environmental Research Web
Climate Change Topics: Temperature /
(Posted March 17, 2015)

 

Lake Tahoe: Drought, climate change threatening winter, way of life at iconic landmark

News article Lake Tahoe: Drought, climate change threatening winter, way of life at iconic landmark (Published March 14, 2015)
Source: San Jose Mercury News
Climate Change Topics: California: Statewide / Drought / Temperature /
(Posted March 16, 2015)

 

Climate change weakens summer circulation in northern hemisphere

News article Climate change weakens summer circulation in northern hemisphere (Published March 13, 2015)
Source: Environmental Research Web
Climate Change Topics: Precipitation, Extreme Weather /
(Posted March 16, 2015)

 

Get ready for weirder weather in California (Column)

News article Get ready for weirder weather in California (Column) (Published March 12, 2015)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Precipitation, Extreme Weather /
(Posted March 12, 2015)

 

San Mateo County embarking on new sea rise vulnerability study

News article San Mateo County embarking on new sea rise vulnerability study (Published March 7, 2015)
Source: San Francisco Chronicle
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted March 9, 2015)

 

Flooding Google: Google's New Headquarters and the Threat of Sea-Level Rise

News article Flooding Google: Google's New Headquarters and the Threat of Sea-Level Rise (Published March 4, 2015)
Source: Huffington Post
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted March 6, 2015)

 

Scientists explain how climate change helps fuel California drought

News article Scientists explain how climate change helps fuel California drought (Published March 3, 2015)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Drought /
(Posted March 3, 2015)

 

Report: Droughts Likely To Continue In California, Maybe Forever

News article Report: Droughts Likely To Continue In California, Maybe Forever (Published March 2, 2015)
Source: SFist
Climate Change Topics: California: Statewide / Drought /
(Posted March 3, 2015)

 

Adaptation Policy and Plan

Report Adaptation Policy and Plan - Most recent climate change adaptation policies and plans from the Army Corps of Engineers (Published October 31, 2014)
Source: United States. Army Corps of Engineers
Climate Change Topics: Adaptation /
(Posted March 3, 2015)

 

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