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Climate Change Blog

 

California Climate Change Symposium

Report California Climate Change Symposium - Presentations on the latest science on how climate change will affect California -- projections, GHG inventory methods, adaptation options for ecosystems, water resources, coastal resources (sea level rise), public health, mitigation, resilience. WebEx recordings of the conference will expected to be posted soon after its conclusion. (Published August 25, 2015)
Climate Change Topics: Adaptation / California: Statewide / Ecosystems, Habitat, Threatened Species / Global issues, human impacts / Greenhouse gas (GHG) increases / Greenhouse gas (GHG) reduction, mitigation / Precipitation, Extreme Weather / Sea level rise / Water supply, changes in supply, snowpack /
(Posted August 31, 2015)

 

Water and climate: Recognize anthropogenic drought (Opinion)

News article Water and climate: Recognize anthropogenic drought (Opinion) (Published August 26, 2015)
Source: Nature
Climate Change Topics: California: Statewide / Drought /
(Posted August 27, 2015)

 

Small amount of warming has 'significant' regional impact

News article Small amount of warming has 'significant' regional impact (Published August 25, 2015)
Source: Environmental Research Web
Climate Change Topics: Temperature /
(Posted August 27, 2015)

 

NASA: Rising Seas About to Catch Up With the West Coast

News article NASA: Rising Seas About to Catch Up With the West Coast (Published August 26, 2015)
Source: KQED Radio
Climate Change Topics: California: Statewide / Sea level rise /
(Posted August 27, 2015)

 

Sea levels will rise, experts warn, and 'it's not going to stop'

News article Sea levels will rise, experts warn, and 'it's not going to stop' (Published August 27, 2015)
Source: Los Angeles Times
Climate Change Topics: Sea level rise /
(Posted August 27, 2015)

 

New Sea-Level Rise Handbook Highlights Science and Models for Non-Scientists

News article New Sea-Level Rise Handbook Highlights Science and Models for Non-Scientists
Related Link: http://pubs.er.usgs.gov/publication/pp1815
(Published August 27, 2015)
Source: U.S. Geological Survey
Climate Change Topics: Sea level rise /
(Posted August 27, 2015)

 

California climate researchers sound the alarm at symposium: 'There's no way out'

News article California climate researchers sound the alarm at symposium: 'There's no way out' (Published August 26, 2015)
Source: Torrance Daily Breeze
Climate Change Topics: California: Statewide / Drought / Ecosystems, Habitat, Threatened Species / Flooding / Precipitation, Extreme Weather / Wildfires /
(Posted August 26, 2015)

 

Sea-level rise modeling handbook: Resource guide for coastal land managers, engineers, and scientists

Report Sea-level rise modeling handbook: Resource guide for coastal land managers, engineers, and scientists - "This sea-level rise modeling handbook has been designed as a guide to the science and simulation models for understanding the dynamics and impacts of sea-level rise on coastal ecosystems. The review herein of decision-support tools and predictive models was compiled from the training sessions, from online research, and from publications. The purpose of this guide is to describe and categorize the suite of data, methods, and models and their design, structure, and application for hindcasting and forecasting the potential impacts of sea-level rise in coastal ecosystems. The data and models cover a broad spectrum of disciplines involving different designs and scales of spatial and temporal complexity for predicting environmental change and ecosystem response. These data and models have not heretofore been synthesized, nor have appraisals been made of their utility or limitations. Some models are demonstration tools for non-experts, whereas others require more expert capacity to apply for any given park, refuge, or regional application. A simplified tabular context has been developed to list and contrast a host of decision-support tools and models from the ecological, geological, and hydrological perspectives. Criteria were established to distinguish the source, scale, and quality of information input and geographic datasets; physical and biological constraints and relations; datum characteristics of water and land components; utility options for setting sea-level rise and climate change scenarios; and ease or difficulty of storing, displaying, or interpreting model output. Coastal land managers, engineers, and scientists can benefit from this synthesis of tools and models that have been developed for projecting causes and consequences of sea-level change on the landscape and seascape." (Professional Paper 1815) (Published August 24, 2015)
Source: United States. Geological Survey
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Models and Tools / Sea level rise /
(Posted August 26, 2015)

 

Climate Change to Hit State's Water System Hard, Panelists Say

News article Climate Change to Hit State's Water System Hard, Panelists Say (Published August 24, 2015)
Source: Association of California Water Agencies
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted August 25, 2015)

 

Increasingly Severe Disturbances Weaken World's Temperate Forests

News article Increasingly Severe Disturbances Weaken World's Temperate Forests (Published August 24, 2015)
Source: U.S. Geological Survey
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted August 25, 2015)

 

Statistical Downscaling Using Localized Constructed Analogs (LOCA)

Report Statistical Downscaling Using Localized Constructed Analogs (LOCA) - "A new technique for statistically downscaling climate model simulations of daily temperature and precipitation is introduced and demonstrated over the western United States. The localized constructed analogs (LOCA) method produces downscaled estimates suitable for hydrological simulations using a multiscale spatial matching scheme to pick appropriate analog days from observations. First, a pool of candidate observed analog days is chosen by matching the model field to be downscaled to observed days over the region that is positively correlated with the point being downscaled, which leads to a natural independence of the downscaling results to the extent of the domain being downscaled. Then, the one candidate analog day that best matches in the local area around the grid cell being downscaled is the single analog day used there. Most grid cells are downscaled using only the single locally selected analog day, but locations whose neighboring cells identify a different analog day use a weighted combination of the center and adjacent analog days to reduce edge discontinuities. By contrast, existing constructed analog methods typically use a weighted average of the same 30 analog days for the entire domain. By greatly reducing this averaging, LOCA produces better estimates of extreme days, constructs a more realistic depiction of the spatial coherence of the downscaled field, and reduces the problem of producing too many light-precipitation days. The LOCA method is more computationally expensive than existing constructed analog techniques, but it is still practical for downscaling numerous climate model simulations with limited computational resources." (Pierce, D. W., et al., 2014, Journal of Hydrometeorology) (Published July 7, 2014)
Climate Change Topics: Models and Tools / Precipitation, Extreme Weather / Temperature /
(Posted August 25, 2015)

 

Maybe the drought is the new normal (Editorial)

News article Maybe the drought is the new normal (Editorial) (Published August 22, 2015)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Drought /
(Posted August 24, 2015)

 

The Climate Change 'Bully' in California's Drought

News article The Climate Change 'Bully' in California's Drought (Published August 21, 2015)
Source: KQED Radio
Climate Change Topics: California: Statewide / Drought /
(Posted August 24, 2015)

 

Climate Change Adaptation Explored at Symposium; DWR Issues Report

News article Climate Change Adaptation Explored at Symposium; DWR Issues Report (Published August 21, 2015)
Source: Association of California Water Agencies
Climate Change Topics: Adaptation / California: Statewide / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted August 24, 2015)

 

Statistics say there's no hiatus

News article Statistics say there's no hiatus (Published August 20, 2015)
Source: Environmental Research Web
Climate Change Topics: Temperature /
(Posted August 21, 2015)

 

Global warming has worsened California's drought

News article Global warming has worsened California's drought (Published August 20, 2015)
Source: USA Today
Climate Change Topics: California: Statewide / Drought /
(Posted August 21, 2015)

 

July was warmest month on Earth in 136 years, NOAA says

News article July was warmest month on Earth in 136 years, NOAA says (Published August 21, 2015)
Source: Los Angeles Times
Climate Change Topics: Temperature /
(Posted August 21, 2015)

 

Climate Change Intensifies California Drought, Scientists Say

News article Climate Change Intensifies California Drought, Scientists Say (Published August 20, 2015)
Source: New York Times
Climate Change Topics: California: Statewide / Drought /
(Posted August 20, 2015)

 

Warming climate is deepening California drought

News article Warming climate is deepening California drought (Published August 20, 2015)
Source: Science Daily
Climate Change Topics: California: Statewide / Drought /
(Posted August 20, 2015)

 

California drought: Climate change plays a role, study says. But how big?

News article California drought: Climate change plays a role, study says. But how big?
Related Link: http://onlinelibrary.wiley.com/doi/10.1002/2015GL064924/full
(Published August 20, 2015)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Drought /
(Posted August 20, 2015)

 

Guidance for Incorporating Sea Level Rise into Capital Planning in San Francisco: Assessing Vulnerability and Risk to Support Adaptation

Report Guidance for Incorporating Sea Level Rise into Capital Planning in San Francisco: Assessing Vulnerability and Risk to Support Adaptation - "As a consequence of rising sea level, San Francisco will experience more frequent and severe coastal flooding than in the past. Areas that currently experience infrequent flooding will be inundated more often and more areas along our shorelines will be exposed to periodic flooding than in the past or today. Sea level rise therefore poses a pervasive and increasing threat along San Francisco’s shorelines. As new infrastructure projects are planned along the shoreline, or existing assets are modified or improved, flooding due to rising sea levels -- in combination with storm surge and wave run up -- must be evaluated." (Sea Level Rise Committee, SF Adapt) (Published September 22, 2014)
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted August 19, 2015)

 

Marshes to Mudflats: Climate Change Effects Along a Latitudinal Gradient in the Pacific Northwest

Report Marshes to Mudflats: Climate Change Effects Along a Latitudinal Gradient in the Pacific Northwest - "Our study examined the effects of sea-level rise on nine tidal marshes in Washington and Oregon, with the goal of providing scientific data to support future coastal planning and conservation. We compiled physical and biological data, including coastal topography, tidal inundation, vegetation structure, and current and historic sediment accretion rates to assess and model how sea-level rise may alter these ecosystems in the future. Multiple factors, including initial elevation, marsh productivity, sediment availability, and rates of sea-level rise affected marsh persistence. Under a low sea-level rise scenario, all marshes remained vegetated with little change in the present configuration of marsh plant communities or gradually increased proportions of mid, high, or transition marsh vegetation zones. However at most sites, mid sea-level rise projections led to loss of middle and high marsh and gain of low marsh habitat. Under a high sea-level rise scenario, marshes at most sites eventually converted to intertidal mudflats. Two sites (Grays Harbor, and Willapa) appeared to have the most resilience to a high sea-level rise rate, persisting as low marsh until at least 2110. Our main model finding is that most tidal marsh study sites have resiliency to sea-level rise over the next 50-70 years, but that sea-level rise will eventually outpace marsh accretion and drown most high and mid marsh habitats by 2110." (Published August 3, 2015)
Source: United States. Geological Survey
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted August 19, 2015)

 

Climate Change Adaptation Library for the Western United States

Report Climate Change Adaptation Library for the Western United States - "Adaptation Partners has elicited expertise on management responses to climate change from land managers in the U.S. Forest Service, National Park Service, and other organizations throughout the western United States. Specifically, adaptation options in the Library were developed by resource specialists during workshops convened to examine climate change vulnerability assessments. During these workshops, land managers identified (1) the most important climate change sensitivities to natural resources, (2) general strategies for adapting to climate change, and (3) within each strategy, specific tactics that can be implemented in on-the-ground management." Synthesis summaries on forest and non-forest vegetation, riparian/wetland ecosystems, water resources, fisheries, wildlife, and recreation. (Published )
Climate Change Topics: Adaptation / Ecosystems, Habitat, Threatened Species /
(Posted August 19, 2015)

 

Drought Management in a Changing Climate: Using Cost-Benefit Analyses to Assist Drinking Water Utilities

Report Drought Management in a Changing Climate: Using Cost-Benefit Analyses to Assist Drinking Water Utilities - "This project improves drinking water utility understanding of system-specific vulnerabilities to droughts by providing guidance on assessing the costs and benefits of leading practices in drought management and risk mitigation. The final report helps water customers, boards of governance, and other stakeholders better understand the total possible costs of drought and improve acceptance of drought planning and mitigation measures to minimize these costs." Also available: Example Cost-Benefit Analysis for Evaluating Drought Management Practices for a Fictional Utility (spreadsheet) (Published July 15, 2015)
Source: Water Research Foundation
Climate Change Topics: Drought / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted August 19, 2015)

 

Contribution of anthropogenic warming to California drought during 2012-2014

Report Contribution of anthropogenic warming to California drought during 2012-2014 - "A suite of climate datasets and multiple representations of atmospheric moisture demand are used to calculate many estimates of the self-calibrated Palmer Drought Severity Index, a proxy for near-surface soil moisture, across California from 1901-2014 at high spatial resolution. Based on the ensemble of calculations, California drought conditions were record-breaking in 2014, but probably not record-breaking in 2012-2014, contrary to prior findings. Regionally, the 2012-2014 drought was record-breaking in the agriculturally important southern Central Valley and highly populated coastal areas. Contributions of individual climate variables to recent drought are also examined, including the temperature component associated with anthropogenic warming. Precipitation is the primary driver of drought variability but anthropogenic warming is estimated to have accounted for 8–27% of the observed drought anomaly in 2012-2014 and 5-18% in 2014. Although natural variability dominates, anthropogenic warming has substantially increased the overall likelihood of extreme California droughts." (Williams, A. P., et al., 2015, Geophysical Research Letters) (Published August 20, 2015)
Climate Change Topics: California: Statewide / Drought /
(Posted August 19, 2015)

 

Climate change could bring twice as many big El Niños

News article Climate change could bring twice as many big El Niños (Published August 18, 2015)
Source: Desert Sun
Climate Change Topics: Precipitation, Extreme Weather /
(Posted August 18, 2015)

 

Flooding's impact on wetlands measurable via low-cost approach

News article Flooding's impact on wetlands measurable via low-cost approach (Published August 17, 2015)
Source: Science Daily
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Flooding /
(Posted August 18, 2015)

 

Being carbon-foolish cost CalPERS and CalSTRS $5 billion (Opinion)

News article Being carbon-foolish cost CalPERS and CalSTRS $5 billion (Opinion) (Published August 18, 2015)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Economic aspects, Costs /
(Posted August 18, 2015)

 

Sen. Fran Pavley: A quiet force in the climate storm

News article Sen. Fran Pavley: A quiet force in the climate storm (Published August 17, 2015)
Source: San Jose Mercury News
Climate Change Topics: AB 32 / California: Statewide / Politics, laws, United Nations, etc. / Greenhouse gas (GHG) reduction, mitigation /
(Posted August 17, 2015)

 

Get ready for the new normal: dry and drier (Opinion)

News article Get ready for the new normal: dry and drier (Opinion) (Published August 17, 2015)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted August 17, 2015)

 

Sea defences not enough to protect delta cities from rising flood risk

News article Sea defences not enough to protect delta cities from rising flood risk (Published August 14, 2015)
Source: Environmental Research Web
Climate Change Topics: Flooding / Sea level rise /
(Posted August 17, 2015)

 

It's Official: Don't Blame the Sun for Climate Change

News article It's Official: Don't Blame the Sun for Climate Change (Published August 14, 2015)
Source: KQED Radio
Climate Change Topics: Research / Skepticism /
(Posted August 17, 2015)

 

Perspectives and Guidance for Climate Change Analysis

Report Perspectives and Guidance for Climate Change Analysis - Report of DWR's Climate Change Technical Advisory Group. Guidance on selecting a global climate model (GCM), planning for extreme conditions, and downscaling from models. SCVWD's own Sarah Young served on this committee. (Published August 14, 2015)
Source: California. Dept. of Water Resources
Climate Change Topics: California: Statewide / Models and Tools / Precipitation, Extreme Weather / Water utilities guidance /
(Posted August 17, 2015)

 

California Drought Signals Fundamental Shift to New Water Conditions

News article California Drought Signals Fundamental Shift to New Water Conditions (Published August 14, 2015)
Source: Circle of Blue
Climate Change Topics: California: Statewide / Drought /
(Posted August 14, 2015)

 

Study Shows Sea Level Rise to Threaten West Coast Tidal Wetlands Over the Next 100 Years

News article Study Shows Sea Level Rise to Threaten West Coast Tidal Wetlands Over the Next 100 Years (Published August 14, 2015)
Source: U.S. Geological Survey
Climate Change Topics: Sea level rise / Ecosystems, Habitat, Threatened Species /
(Posted August 14, 2015)

 

Flood protection and preparing for sea level rise (Column by Board director Richard Santos)

News article Flood protection and preparing for sea level rise (Column by Board director Richard Santos) (Published August 14, 2015)
Source: Milpitas Post
Climate Change Topics: California: Bay Area and Delta / Flooding / Santa Clara Valley Water District / Sea level rise /
(Posted August 13, 2015)

 

Coastal Commission Adopts Sea Level Rise Guidelines

News article Coastal Commission Adopts Sea Level Rise Guidelines
Related Link: http://www.coastal.ca.gov/climate/SLRguidance.html
(Published August 12, 2015)
Source: Capital Public Radio
Climate Change Topics: California: Statewide / Sea level rise /
(Posted August 13, 2015)

 

Sea-level rise prompts Coastal Commission action

News article Sea-level rise prompts Coastal Commission action (Published August 12, 2015)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Sea level rise /
(Posted August 12, 2015)

 

Sea Level Rise Policy Guidance

Report Sea Level Rise Policy Guidance - "Interpretive guidelines for addressing sea level rise in local coastal programs and coastal development permits." Adopted Aug. 12, 2015. (Published August 12, 2015)
Source: California. Coastal Commission.
Climate Change Topics: California: Statewide / Sea level rise /
(Posted August 12, 2015)

 

Climate change and the Delta: What do we know about climate driven variability of the Bay-Delta ecosystem?

Report Climate change and the Delta: What do we know about climate driven variability of the Bay-Delta ecosystem? - Report from a conference at UC Davis. "An introduction to climate change impacts on the Bay-Delta system, given by Dr. Jim Cloern, a research scientist at the USGS who conducts research on the ecology and biogeochemistry of estuaries to understand how they respond to climatic variability and human disturbance." (Published July 27, 2015)
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species /
(Posted August 12, 2015)

 

Tidal marshes: Adapting to sea level rise, carbon sequestration

Report Tidal marshes: Adapting to sea level rise, carbon sequestration - Report from a conference at UC Davis. "Dr. Jim Morris from the University of South Carolina gave a presentation on how coastal marshes are keeping up with sea level rise. . . Dr. John Callaway with University of San Francisco gave a presentation on carbon dynamics and sequestration, focusing on measurements that have been made in the marshes around San Francisco Bay over the last 10 years." (Published July 29, 2015)
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Sea level rise /
(Posted August 12, 2015)

 

Adapting to sea level rise and climate change in the San Francisco Bay Area: What can we do?

Report Adapting to sea level rise and climate change in the San Francisco Bay Area: What can we do? - Report from a conference at UC Davis. "In 1998, the Baylands Ecosystem Habitat Goals project was first completed which outlined a vision for extensive tidal marsh restoration around the San Francisco Bay Area. Recently, the Baylands project was updated to address climate change and sea level rise issues. Dr. Letitia Grenier, Senior Scientist at the San Francisco Estuary Institute, gave a presentation on the update, noting that the project is a very large collaborative project with over 200 scientists, regulators, restoration practitioners and others who have been working on it over a three year period. . . . [Jeremy Lowe of the SFEI said,] 'We need to think of a shoreline and landscape that can accommodate not just an amount of change but continuous change. That's partly is going to be us, partly the marshes, but it's also going to be how we as a society deal with it, how we protect ourselves, but eventually start to think about moving because we are seeing those issues already'." (Published July 31, 2015)
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Flooding / Sea level rise /
(Posted August 12, 2015)

 

Landscape-scale planning for ecological resilience in the Bay and Delta

Report Landscape-scale planning for ecological resilience in the Bay and Delta - Report from a conference at UC Davis. "Senior scientist Robin Grossinger gave a presentation on how the [San Francisco Estuary] Institute's projects are working to translate science into data-driven, place-based, collaborative, and creative visions for resilient future landscapes in the Bay and the Delta." (Published July 30, 2015)
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species /
(Posted August 12, 2015)

 

Projecting inundation in the San Francisco Bay: Sea level and tides

Report Projecting inundation in the San Francisco Bay: Sea level and tides - Report from a conference at UC Davis. "UC Berkeley's Dr. Mark Stacey discussed the latest research on how sea level rise will impact the Bay Area." (Published July 28, 2015)
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted August 12, 2015)

 

Californians and Climate Change

News article Californians and Climate Change (Published August 10, 2015)
Source: Public Policy Institute of California
Climate Change Topics: California: Statewide / Politics, laws, United Nations, etc. /
(Posted August 11, 2015)

 

Climate change: Future Bay Area weather will be more like San Diego's

News article Climate change: Future Bay Area weather will be more like San Diego's (Published August 9, 2015)
Source: San Jose Mercury News
Climate Change Topics: California: Bay Area and Delta / Temperature /
(Posted August 11, 2015)

 

Jerry Brown says 'California is burning' and climate change is to blame

News article Jerry Brown says 'California is burning' and climate change is to blame (Published August 6, 2015)
Source: San Francisco Chronicle
Climate Change Topics: California: Statewide / Wildfires /
(Posted August 7, 2015)

 

How to make sense of 'alarming' sea level forecasts

News article How to make sense of 'alarming' sea level forecasts (Published August 7, 2015)
Source: The Conversation
Climate Change Topics: Sea level rise /
(Posted August 7, 2015)

 

Climate change: world's wealthiest understand, but only half see it as threat

News article Climate change: world's wealthiest understand, but only half see it as threat (Published August 7, 2015)
Source: Environmental Research Web
Climate Change Topics: Global issues, human impacts /
(Posted August 7, 2015)

 

Gov. Brown highlights climate change risks at site of Rocky fire

News article Gov. Brown highlights climate change risks at site of Rocky fire (Published August 6, 2015)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Wildfires /
(Posted August 7, 2015)

 

California is ahead of the game as Obama releases Clean Power Plan

News article California is ahead of the game as Obama releases Clean Power Plan (Published August 4, 2015)
Source: Los Angeles Times
Climate Change Topics: AB 32 / California: Statewide / Energy management and conservation /
(Posted August 4, 2015)

 

Multi-Meter Sea Level Rise This Century? That's Not A Consensus

News article Multi-Meter Sea Level Rise This Century? That's Not A Consensus (Published August 1, 2015)
Source: Science 2.0
Climate Change Topics: Sea level rise /
(Posted August 3, 2015)

 

What Happens When The Birds And The Bees Don't Show Up On Time

News article What Happens When The Birds And The Bees Don't Show Up On Time (Published July 31, 2015)
Source: KQED Radio
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted August 3, 2015)

 

Q&A: San Francisco Public Press Reporter Kevin Stark on Sea Level Rise and Bay Area Preparations

News article Q&A: San Francisco Public Press Reporter Kevin Stark on Sea Level Rise and Bay Area Preparations (Published July 30, 2015)
Source: Bay Nature
Climate Change Topics: California: Bay Area and Delta / Land Use, environmental management systems, and regulation / Sea level rise / Flooding /
(Posted July 31, 2015)

 

Major S.F. Bayfront Developments Advance Despite Sea Rise Warnings (KQED)

News article Major S.F. Bayfront Developments Advance Despite Sea Rise Warnings (KQED) (Published July 30, 2015)
Source: KQED Radio
Climate Change Topics: California: Bay Area and Delta / Flooding / Land Use, environmental management systems, and regulation / Sea level rise /
(Posted July 31, 2015)

 

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)

 

Climate change: California poll finds Republicans don't see global warming as serious threat

News article Climate change: California poll finds Republicans don't see global warming as serious threat (Published July 30, 2015)
Source: San Jose Mercury News
Climate Change Topics: California: Statewide / Politics, laws, United Nations, etc. /
(Posted July 30, 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)

 

With Dozens of Local and Regional Governments, Baywide Planning Is Hard

News article With Dozens of Local and Regional Governments, Baywide Planning Is Hard (Published July 29, 2015)
Source: San Francisco Public Press
Climate Change Topics: California: Bay Area and Delta / Flooding / Land Use, environmental management systems, and regulation / Sea level rise /
(Posted July 29, 2015)

 

Major S.F. Bayfront Developments Advance Despite Sea Rise Warnings

News article Major S.F. Bayfront Developments Advance Despite Sea Rise Warnings (Published July 29, 2015)
Source: San Francisco Public Press
Climate Change Topics: California: Bay Area and Delta / Flooding / Land Use, environmental management systems, and regulation / Sea level rise /
(Posted July 29, 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)

 

Washington, DC sinking fast, adding to threat of sea-level rise

News article Washington, DC sinking fast, adding to threat of sea-level rise (Published July 28, 2015)
Source: Phys.Org
Climate Change Topics: Sea level rise /
(Posted July 28, 2015)

 

County to reduce climate change impact by preserving farmland

News article County to reduce climate change impact by preserving farmland (Published July 28, 2015)
Source: Morgan Hill Times
Climate Change Topics: California: Bay Area and Delta / Greenhouse gas (GHG) reduction, mitigation / Land Use, environmental management systems, and regulation /
(Posted July 28, 2015)

 

Did the Fracking Boom Lower US Carbon Emissions?

News article Did the Fracking Boom Lower US Carbon Emissions? (Published July 23, 2015)
Source: Chemistry Views
Climate Change Topics: Greenhouse gas (GHG) reduction, mitigation /
(Posted July 23, 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)

 

Controversial agency battles climate change

News article Controversial agency battles climate change (Published July 19, 2015)
Source: Stockton Record
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted July 20, 2015)

 

On Climate, a Rough Road Ahead for California

News article On Climate, a Rough Road Ahead for California (Published July 19, 2015)
Source: KQED Radio
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted July 20, 2015)

 

Climate Change Meets Drought In California

News article Climate Change Meets Drought In California (Published July 16, 2015)
Source: Capital Public Radio
Climate Change Topics: California: Statewide / Drought /
(Posted July 17, 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)

 

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