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Climate Change Blog

 

U.S. EPA Helps Redwood Valley County Water District Prepare for Climate Change

News article U.S. EPA Helps Redwood Valley County Water District Prepare for Climate Change (Published November 21, 2014)
Source: Association of California Water Agencies
Climate Change Topics: Adaptation / California: Water/Flood Protection Districts /
(Posted November 24, 2014)

 

Scenario-Based Projected Changes Map

Report Scenario-Based Projected Changes Map - Zoom in on an area to get projected changes in annual total precipitation, annual average temperature, precipitation intensity for the 100-year storm, and sea-level rise under three different scenarios (hotter-drier, warmer-wetter, and middle-distribution) for 2035 and 2060. (Published )
Source: United States. Environmental Protection Agency
Climate Change Topics: Models and Tools / Precipitation, Extreme Weather / Sea level rise / Temperature /
(Posted November 24, 2014)

 

President's State, Local, and Tribal Leaders Task Force on Climate Preparedness and Resilience: Recommendations to the President

Report President's State, Local, and Tribal Leaders Task Force on Climate Preparedness and Resilience: Recommendations to the President - "The recommendations offer guidance on how the Federal Government should modernize programs and policies to incorporate climate change, incentivize and remove barriers to community resilience, and provide useful, actionable information and tools. The Task Force organized its report across seven cross-cutting themes: building resilient communities; improving resilience in the Nation's infrastructure; ensuring resilience of natural resources; preserving human health and supporting resilient populations; supporting climate-smart hazard mitigation and disaster preparedness and recovery; understanding and acting on the economics of resilience; and building capacity." (Nov. 2014) (Published November 17, 2014)
Source: United States. White House Council on Environmental Quality
Climate Change Topics: Adaptation / Ecosystems, Habitat, Threatened Species / Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation / Sea level rise / Water quality / Water supply, changes in supply, snowpack /
(Posted November 24, 2014)

 

FetchClimate

Report FetchClimate - "FetchClimate provides ready access to complex geographical information including, but not limited to, climatological information. On accessing the FetchClimate Azure web service, you simply need to perform four steps to find what you are looking for: 1.Draw the location on the Earth via points or grids (Where?) 2.Specify the data of interest (What?) 3.Set the timeframe, including future predictions, and a combination of averages over -- or steps through -- years, days, and hours (When?) 4.Fetch and view your results." (Microsoft Research) Requires IE 10 or higher, Chrome, or Firefox. (Published )
Climate Change Topics: Models and Tools / Precipitation, Extreme Weather / Sea level rise / Temperature / Water supply, changes in supply, snowpack /
(Posted November 24, 2014)

 

2014 warmest year: California, world set to break records

News article 2014 warmest year: California, world set to break records (Published November 22, 2014)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Temperature /
(Posted November 21, 2014)

 

Utilities using EPA climate-risk asessment tool

News article Utilities using EPA climate-risk asessment tool (Published November 20, 2014)
Source: American Water Works Association
Climate Change Topics: Water utilities guidance /
(Posted November 21, 2014)

 

Salinity counts when it comes to sea level

News article Salinity counts when it comes to sea level (Published November 20, 2014)
Source: Science Daily
Climate Change Topics: Sea level rise /
(Posted November 21, 2014)

 

Climate Ready Water Utilities (CRWU)

Report Climate Ready Water Utilities (CRWU) - Many tools, reports, and training opportunities. "EPA's Climate Ready Water Utilities (CRWU) initiative assists the water sector, which includes drinking water, wastewater, and stormwater utilities, in addressing climate change impacts. Through the development of practical and easy-to-use tools, EPA promotes a clear understanding of climate science and adaptation options by translating complex climate projections into accessible formats. This information helps utility owners and operators better prepare their systems for the impacts of climate change. Extreme weather events, sea level rise, shifting precipitation patterns and temperature variability, all intensified by climate change, have significant implications for the sustainability of the water sector. By planning for, assessing and adapting to these challenges, the water sector can fulfill their public health and environmental missions and begin the process of becoming climate ready." (Published )
Source: United States. Environmental Protection Agency
Climate Change Topics: Precipitation, Extreme Weather / Sea level rise / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted November 21, 2014)

 

DWR announces climate science service

News article DWR announces climate science service (Published November 20, 2014)
Source: California Dept. of Water Resources
Climate Change Topics: Adaptation / California: Statewide / Water supply, changes in supply, snowpack /
(Posted November 20, 2014)

 

A Toolkit to Help Communities Respond to a Changing Climate

News article A Toolkit to Help Communities Respond to a Changing Climate
Related Link: http://toolkit.climate.gov/
(Published November 17, 2014)
Source: White House
Climate Change Topics: Flooding / Models and Tools / Sea level rise / Ecosystems, Habitat, Threatened Species /
(Posted November 18, 2014)

 

Modeling Sea-Level Rise in San Francisco Bay Estuary

Report Modeling Sea-Level Rise in San Francisco Bay Estuary - "It is the aim of our program to provide site specific sea-level rise predictions to land managers through the intensive collection of field data and innovative predictive modeling. In 2009 and 2010, thousands of elevation and vegetation survey points were collected in salt marsh at 12 sites surrounding San Francisco Bay. The elevation data was synthesized into a continuous elevation model for each site, providing land owners valuable baseline data. A new marsh accretion model, WARMER, (Swanson et al., submitted) was developed to assess the risk of sea-level rise to salt marsh parcels around San Francisco Bay. Additional sediment data was collected at four representative sites to provide inputs for the WARMER model. The results of WARMER were then extrapolated to the remaining study sites. WARMER indicates that most salt marsh around San Francisco Bay will transition from high to mid marsh by 2040, to low marsh by 2060 and to mudflat by 2080, however there is a great deal of variation around the bay. The rate of sea-level rise and local accretion rates may be very different than the parameters used for the model, thus WARMER results are best characterized as one possible scenario of how the salt marsh platform may respond to rising sea-levels." The project produced: "Final Report for Sea-Level Rise Response Modeling for San Francisco Bay Estuary Tidal Marshes" (2013) (Published April 17, 2013)
Source: United States. Geological Survey
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Models and Tools / Sea level rise /
(Posted November 18, 2014)

 

U.S. Climate Resilience Toolkit

Report U.S. Climate Resilience Toolkit - Aggregates in one place tools, data, and maps from federal government agencies. Topics covered include coastal flood risk, ecosystem vulnerability, food resilience, and human health. (Published November 17, 2014)
Source: United States. National Oceanic and Atmospheric Administration
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Flooding / Models and Tools / Sea level rise /
(Posted November 18, 2014)

 

Dynamic Reservoir Operations: Managing for Climate Variability and Change

Report Dynamic Reservoir Operations: Managing for Climate Variability and Change - "Increasing demand for water and potential shifts in availability of water due to climate change present challenges to water system operators, who are responsible for maintaining water supply reliability, both in terms of quantity and quality. One promising approach for addressing these challenges is through application of systems operations approaches to improve reservoir operations. Dynamic Reservoir Operations (DRO) are operating rules that change based on the present state of a system, such as storage levels, current inflow, and/or forecasted conditions. Dynamic operations tend to be effective because they depend on a diverse group of variables that result in a more robust operational framework, providing utilities more information for operating their system to meet objectives under varying conditions." (Published October 21, 2014)
Source: Water Research Foundation
Climate Change Topics: Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted November 18, 2014)

 

The Hydrologic Fast Lane (Also: IPCC Reports 101)

News article The Hydrologic Fast Lane (Also: IPCC Reports 101) (Published November 13, 2014)
Source: Circle of Blue
Climate Change Topics: Groundwater / Precipitation, Extreme Weather / Water quality / Water supply, changes in supply, snowpack /
(Posted November 13, 2014)

 

Groundwater warming up in sync

News article Groundwater warming up in sync (Published November 11, 2014)
Source: Science Daily
Climate Change Topics: Groundwater /
(Posted November 12, 2014)

 

Report: International Panel on Climate Change Reiterates Three Urgent Water Concerns

News article Report: International Panel on Climate Change Reiterates Three Urgent Water Concerns (Published November 7, 2014)
Source: Circle of Blue
Climate Change Topics: Precipitation, Extreme Weather / Water quality / Water supply, changes in supply, snowpack /
(Posted November 12, 2014)

 

Obama, Chinese president agree to landmark climate deal

News article Obama, Chinese president agree to landmark climate deal (Published November 12, 2014)
Source: Los Angeles Times
Climate Change Topics: Greenhouse gas (GHG) reduction, mitigation / Politics, laws, United Nations, etc. /
(Posted November 12, 2014)

 

Understanding the Effects of Climate Change

Report Understanding the Effects of Climate Change - Abstracts of papers on climate change presented at the 2014 Bay-Delta Science Conference. Topics included severe storms (Dettinger, M., et al.), coastal flood maps for the San Francisco Bay (Barnard, P., et al.), the diminishing odds of 'normal' snowpacks (Cayan, D., et al.), implications of warmer temperatures for the Delta smelt (Brown, L., et al., and Morgan-King, T. et al.) (Published October 30, 2014)
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Precipitation, Extreme Weather / Water supply, changes in supply, snowpack /
(Posted November 12, 2014)

 

Will 2014 Be California's Hottest Year in History?

News article Will 2014 Be California's Hottest Year in History? (Published November 6, 2014)
Source: Weather Channel
Climate Change Topics: California: Statewide / Temperature /
(Posted November 6, 2014)

 

Unusual warm ocean conditions off California, West Coast bringing odd species

News article Unusual warm ocean conditions off California, West Coast bringing odd species (Published November 2, 2014)
Source: Contra Costa Times
Climate Change Topics: California: Statewide / Ecosystems, Habitat, Threatened Species /
(Posted November 5, 2014)

 

Snow retreat will worsen California droughts

News article Snow retreat will worsen California droughts (Published November 4, 2014)
Source: New Scientist
Climate Change Topics: California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted November 5, 2014)

 

Study says natural factors, not humans, behind West Coast warming

News article Study says natural factors, not humans, behind West Coast warming (Published November 4, 2014)
Source: Sacramento Bee
Climate Change Topics: Research /
(Posted November 4, 2014)

 

U.N. Panel Warns of 'Severe and Irreversible' Effects of Climate Change

News article U.N. Panel Warns of 'Severe and Irreversible' Effects of Climate Change (Published November 4, 2014)
Source: KQED Radio
Climate Change Topics: Global issues, human impacts / Greenhouse gas (GHG) increases / Greenhouse gas (GHG) reduction, mitigation /
(Posted November 4, 2014)

 

The Global Groundwater Crisis

Report The Global Groundwater Crisis - "Groundwater depletion the world over poses a far greater threat to global water security than is currently acknowledged." (Famiglietti, J. S., 2014, Nature Climate Change) (Published October 29, 2014)
Climate Change Topics: Groundwater /
(Posted November 4, 2014)

 

EPA Releases Climate Plans on Fifth Anniversary of President Obamas Sustainability Initiative/Plan Builds Capacity to Protect Human Health and the Environment in a Changing Climate

News article EPA Releases Climate Plans on Fifth Anniversary of President Obamas Sustainability Initiative/Plan Builds Capacity to Protect Human Health and the Environment in a Changing Climate
Related Link: http://epa.gov/climatechange/impacts-adaptation/fed-programs/Final-EPA-Adaptation-plans.html
(Published October 31, 2014)
Source: U.S. Environmental Protection Agency
Climate Change Topics: Adaptation / Federal Regulations, EPA, Clean Air Act / Precipitation, Extreme Weather / Sea level rise / Water supply, changes in supply, snowpack /
(Posted November 3, 2014)

 

Despite California climate law, carbon emissions may be a shell game

News article Despite California climate law, carbon emissions may be a shell game (Published November 3, 2014)
Source: Sacramento Bee
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted November 3, 2014)

 

Warning in climate change report is loudest yet by scientists

News article Warning in climate change report is loudest yet by scientists
Related Link: http://www.ipcc.ch/
(Published November 3, 2014)
Source: Sacramento Bee
Climate Change Topics: Global issues, human impacts / Greenhouse gas (GHG) reduction, mitigation /
(Posted November 3, 2014)

 

New research predicts California droughts will worsen

News article New research predicts California droughts will worsen (Published November 1, 2014)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Drought /
(Posted November 3, 2014)

 

Scientists sound the alarm in climate change report

News article Scientists sound the alarm in climate change report (Published November 2, 2014)
Source: Los Angeles Times
Climate Change Topics: Global issues, human impacts / Greenhouse gas (GHG) increases / Greenhouse gas (GHG) reduction, mitigation /
(Posted November 3, 2014)

 

Climate Change 2014: Synthesis Report

Report Climate Change 2014: Synthesis Report - Synthesis of the IPCC's 5th assessment. "Human influence on the climate is clear. The more we disrupt our climate, the more we risk severe, pervasive and irreversible impacts. We have the means to limit climate change and build a more prosperous, sustainable future." (Published November 2, 2014)
Source: Intergovernmental Panel on Climate Change (IPCC)
Climate Change Topics: Agriculture / Flooding / Global issues, human impacts / Greenhouse gas (GHG) increases / Greenhouse gas (GHG) reduction, mitigation / Precipitation, Extreme Weather / Sea level rise / Temperature /
(Posted November 3, 2014)

 

EPA Adaptation Implementation Plans

Report EPA Adaptation Implementation Plans - EPA's plans to adapt to climate change for different sectors (such as water) and all regions of the country. (Published October 31, 2014)
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Federal Regulations, EPA, Clean Air Act / Precipitation, Extreme Weather / Sea level rise / Water quality / Water supply, changes in supply, snowpack /
(Posted November 3, 2014)

 

NASA scientist raises alarm on global groundwater decline

News article NASA scientist raises alarm on global groundwater decline (Published October 30, 2014)
Source: E&E Publishing LLC
Climate Change Topics: Groundwater /
(Posted October 30, 2014)

 

How Boston is rethinking its relationship with the sea

News article How Boston is rethinking its relationship with the sea (Published October 26, 2014)
Source: BBC
Climate Change Topics: Sea level rise /
(Posted October 27, 2014)

 

Here's How San Francisco is Bracing for Sea Level Rise Estimated to Impact $48 Billion in Assets

News article Here's How San Francisco is Bracing for Sea Level Rise Estimated to Impact $48 Billion in Assets (Published October 24, 2014)
Source: Vice News
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted October 27, 2014)

 

San Francisco looks to adapt to sea-level rise, climate change impacts

News article San Francisco looks to adapt to sea-level rise, climate change impacts (Published October 26, 2014)
Source: Fierce Homeland Security
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted October 27, 2014)

 

Climate change caused by ocean, not just atmosphere

News article Climate change caused by ocean, not just atmosphere (Published October 25, 2014)
Source: Science Daily
Climate Change Topics: Greenhouse gas (GHG) increases / Temperature /
(Posted October 27, 2014)

 

Mediterranean, semi-arid ecosystems prove resistant to climate change

News article Mediterranean, semi-arid ecosystems prove resistant to climate change (Published October 20, 2014)
Source: Science Daily
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted October 23, 2014)

 

Stanford's own water depends on climate divestment (Opinion by Board director Brian Schmidt)

News article Stanford's own water depends on climate divestment (Opinion by Board director Brian Schmidt) (Published October 21, 2014)
Source: Stanford Daily
Climate Change Topics: Greenhouse gas (GHG) reduction, mitigation /
(Posted October 22, 2014)

 

Warming Earth heading for hottest year on record

News article Warming Earth heading for hottest year on record (Published October 21, 2014)
Source: Associated Press
Climate Change Topics: Temperature /
(Posted October 21, 2014)

 

Newly-Released Study Vastly Underestimates The 'Worst-Case Scenario' For Sea Level Rise

News article Newly-Released Study Vastly Underestimates The 'Worst-Case Scenario' For Sea Level Rise (Published October 16, 2014)
Source: Think Progress
Climate Change Topics: Sea level rise /
(Posted October 17, 2014)

 

Sea level rise over past century unmatched in 6000 years, says study

News article Sea level rise over past century unmatched in 6000 years, says study (Published October 16, 2014)
Source: Environmental Research Web
Climate Change Topics: Sea level rise /
(Posted October 17, 2014)

 

Upper limit for sea level projections by 2100

Report Upper limit for sea level projections by 2100 - "We construct the probability density function of global sea level at 2100, estimating that sea level rises larger than 180 cm are less than 5% probable. An upper limit for global sea level rise of 190 cm is assembled by summing the highest estimates of individual sea level rise components simulated by process based models with the RCP8.5 scenario. The agreement between the methods may suggest more confidence than is warranted since large uncertainties remain due to the lack of scenario-dependent projections from ice sheet dynamical models, particularly for mass loss from marine-based fast flowing outlet glaciers in Antarctica. This leads to an intrinsically hard to quantify fat tail in the probability distribution for global mean sea level rise. Thus our low probability upper limit of sea level projections cannot be considered definitive. Nevertheless, our upper limit of 180 cm for sea level rise by 2100 is based on both expert opinion and process studies and hence indicates that other lines of evidence are needed to justify a larger sea level rise this century." (Jevejeva, S., et al., 2014, Environmental Research Letters) (Published October 10, 2014)
Climate Change Topics: Sea level rise /
(Posted October 15, 2014)

 

Rising sea levels of 1.8 meters in worst-case scenario, researchers calculate

News article Rising sea levels of 1.8 meters in worst-case scenario, researchers calculate
Related Link: http://iopscience.iop.org/1748-9326/9/10/104008/
(Published October 14, 2014)
Source: Science Daily
Climate Change Topics: Sea level rise /
(Posted October 14, 2014)

 

See just how much is left of San Francisco Bay's shrinking wetlands

News article See just how much is left of San Francisco Bay's shrinking wetlands (Published October 9, 2014)
Source: PBS NewsHour
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Sea level rise /
(Posted October 10, 2014)

 

Restored wetlands welcome wildlife and protect against future floods in San Francisco Bay Area

News article Restored wetlands welcome wildlife and protect against future floods in San Francisco Bay Area (Published October 9, 2014)
Source: PBS NewsHour
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Sea level rise /
(Posted October 10, 2014)

 

Climate Change and Sacramento Valley Water Operations

Report Climate Change and Sacramento Valley Water Operations - Presentations "from Sacramento Valley water leaders as they discuss the effects of climate change on water storage, transfers and forecasted operations. Presenters provide valuable insights into current and desired reservoir conditions and projects." (Published September 18, 2014)
Source: Association of California Water Agencies
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted October 8, 2014)

 

National Fish, Wildlife and Plants Climate Adaptation Strategy: Taking Action, a Progress Report, 2014

Report National Fish, Wildlife and Plants Climate Adaptation Strategy: Taking Action, a Progress Report, 2014 - Case studies of work done around the country. (Published September 18, 2014)
Climate Change Topics: Adaptation / Ecosystems, Habitat, Threatened Species /
(Posted October 6, 2014)

 

Scientists speed up analysis of human link to wild weather

News article Scientists speed up analysis of human link to wild weather (Published October 2, 2014)
Source: Reuters
Climate Change Topics: Drought / Flooding / Precipitation, Extreme Weather /
(Posted October 2, 2014)

 

When Can A Big Storm Or Drought Be Blamed On Climate Change?

News article When Can A Big Storm Or Drought Be Blamed On Climate Change? (Published October 1, 2014)
Source: National Public Radio (NPR)
Climate Change Topics: Drought / Precipitation, Extreme Weather /
(Posted October 2, 2014)

 

Water politics must adapt to a warming world

News article Water politics must adapt to a warming world (Published September 30, 2014)
Source: Nature
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 30, 2014)

 

Climate change is increasing the chances of drought (Opinion)

News article Climate change is increasing the chances of drought (Opinion) (Published September 30, 2014)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Drought /
(Posted September 30, 2014)

 

The Connection Between California's Drought and Climate Change

News article The Connection Between California's Drought and Climate Change (Published September 29, 2014)
Source: KQED Radio
Climate Change Topics: California: Statewide / Drought /
(Posted September 30, 2014)

 

California's drought linked to greenhouse gases, climate change in Stanford study

News article California's drought linked to greenhouse gases, climate change in Stanford study
Related Link: http://www2.ametsoc.org/ams/index.cfm/publications/bulletin-of-the-american-meteorological-society-bams/explaining-extreme-events-of-2013-from-a-climate-perspective/
(Published September 30, 2014)
Source: San Jose Mercury News
Climate Change Topics: California: Statewide / Drought /
(Posted September 30, 2014)

 

California drought and climate warming: Studies find no clear link

News article California drought and climate warming: Studies find no clear link (Published September 30, 2014)
Source: Los Angeles Times
Climate Change Topics: California: Statewide /
(Posted September 29, 2014)

 

California drought tied to climate change? Maybe, maybe not

News article California drought tied to climate change? Maybe, maybe not (Published September 30, 2014)
Source: San Francisco Chronicle
Climate Change Topics: California: Statewide / Drought /
(Posted September 29, 2014)

 

Explaining Extreme Events of 2013 from a Climate Perspective

Report Explaining Extreme Events of 2013 from a Climate Perspective - "This BAMS [Bulletin of the American Meteorological Society] special report presents assessments of how climate change may have affected the strength and likelihood of individual extreme events." Includes the California drought. (Published September 29, 2014)
Climate Change Topics: Drought / Precipitation, Extreme Weather / Temperature /
(Posted September 29, 2014)

 

Long-Range Forecast: Less Snow for Skiers, Less Water for California

News article Long-Range Forecast: Less Snow for Skiers, Less Water for California
Related Link: http://www.usbr.gov/WaterSMART/wcra/docs/ssjbia/ssjbia.pdf
(Published September 24, 2014)
Source: KQED Radio
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 26, 2014)

 

State to establish sea level rise database: Gov. Jerry Brown signs Assemblyman Rich Gordon's legislation to coordinate planning

News article State to establish sea level rise database: Gov. Jerry Brown signs Assemblyman Rich Gordon's legislation to coordinate planning (Published September 24, 2014)
Source: San Mateo Daily Journal
Climate Change Topics: California: Statewide / Sea level rise /
(Posted September 26, 2014)

 

Developing Robust Strategies for Climate Change and Other Risks : A Water Utility Framework

Report Developing Robust Strategies for Climate Change and Other Risks : A Water Utility Framework - "Identif[ies] the most likely vulnerabilities typically associated with climate change, provide[s] utilities with a tool to assess their own utility-specific vulnerabilities, and produce[s] a suite of risk management tools to assist utilities in identifying appropriate strategies and actions to respond to the vulnerabilities that are identified." (Published September 23, 2014)
Source: Water Research Foundation
Climate Change Topics: Water quality / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted September 26, 2014)

 

Climate Change Vulnerability of Freshwater Fishes of the San Francisco Bay Area

Report Climate Change Vulnerability of Freshwater Fishes of the San Francisco Bay Area - "Climate change is expected to progressively shift the freshwater environments of the San Francisco Bay Area (SFBA) to states that favor alien fishes over native species. Native species likely will have more limited istributions and some may be extirpated. Stream-dependent species may decline as portions of streams dry or become warmer due to lower flows and increased air temperatures. However, factors other than climate change may pose a more immediate threat to native fishes. Comparison of regional vs. statewide vulnerability (baseline and climate change) scores suggests that a higher proportion (56% vs. 50%) of SFBA native species, as compared to the state’s entire fish fauna, are vulnerable to existing anthropogenic threats that result in habitat degradation. In comparison, a smaller proportion of SFBA native species are vulnerable to predicted climate change effects (67% vs. 82%). In the SFBA, adverse effects from climate change likely come second to estuarine alteration, agriculture, and dams. However, the relative effect of climate change on species likely will grow in an increasingly warmer and drier California. Maintaining representative assemblages of native fishes may require providing flow regimes downstream from dams that reflect more natural hydrographs, extensive riparian, stream, and estuarine habitat restoration, and other management actions, such as modification of hatchery operations." (Quinones, R. M. and P. B. Moyle, 2014, San Francisco Estuary and Watershed Science) (Published September 23, 2014)
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species /
(Posted September 24, 2014)

 

Study links changing winds to warming in Pacific

News article Study links changing winds to warming in Pacific (Published September 23, 2014)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Temperature /
(Posted September 23, 2014)

 

West Coast warming linked to naturally occurring changes

News article West Coast warming linked to naturally occurring changes
Related Link: http://www.pnas.org/content/early/2014/09/16/1318371111.abstract
(Published September 23, 2014)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Temperature /
(Posted September 23, 2014)

 

New Report Predicts Climate Change Will Significantly Impact California's Central Valley

News article New Report Predicts Climate Change Will Significantly Impact California's Central Valley
Related Link: http://www.usbr.gov/WaterSMART/wcra/docs/ssjbia/ssjbia.pdf
(Published September 22, 2014)
Source: Association of California Water Agencies
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Water quality / Water supply, changes in supply, snowpack /
(Posted September 23, 2014)

 

Our Disappearing Snows: Climate Change and Water Resources (Opinion by Peter Gleick)

News article Our Disappearing Snows: Climate Change and Water Resources (Opinion by Peter Gleick) (Published September 19, 2014)
Source: Huffington Post
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 23, 2014)

 

Atmospheric controls on northeast Pacific temperature variability and change, 1900-2012

Report Atmospheric controls on northeast Pacific temperature variability and change, 1900-2012 - "Northeast Pacific coastal warming since 1900 is often ascribed to anthropogenic greenhouse forcing, whereas multidecadal temperature changes are widely interpreted in the framework of the Pacific Decadal Oscillation (PDO), which responds to regional atmospheric dynamics. This study uses several independent data sources to demonstrate that century-long warming around the northeast Pacific margins, like multidecadal variability, can be primarily attributed to changes in atmospheric circulation. It presents a significant reinterpretation of the region's recent climate change origins, showing that atmospheric conditions have changed substantially over the last century, that these changes are not likely related to historical anthropogenic and natural radiative forcing, and that dynamical mechanisms of interannual and multidecadal temperature variability can also apply to observed century-long trends." (Johnstone, J. A. and N. J. Mantua, 2014, Proceedings of the National Academy of Sciences) (Published September 22, 2014)
Climate Change Topics: California: Statewide / Temperature /
(Posted September 23, 2014)

 

Sacramento and San Joaquin Basins Climate Impact Assessment

Report Sacramento and San Joaquin Basins Climate Impact Assessment - Projects impacts to water deliveries, salinity in the Delta, fish species, hydropower, and flood control. (Published September 22, 2014)
Source: United States. Bureau of Reclamation
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Water quality / Water supply, changes in supply, snowpack /
(Posted September 23, 2014)

 

'Assisted migration' may save some species from climate change doom (Opinion)

News article 'Assisted migration' may save some species from climate change doom (Opinion) (Published September 22, 2014)
Source: Los Angeles Times
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted September 22, 2014)

 

Why Americans are flocking to their sinking shores even as the risks mount

News article Why Americans are flocking to their sinking shores even as the risks mount (Published September 17, 2014)
Source: Reuters
Climate Change Topics: Sea level rise /
(Posted September 17, 2014)

 

Community Choice Aggregation

Report Community Choice Aggregation - Memo on a new method for developing an alternative, local energy supply, from Chief Operating Officer Jim Fiedler to the SCVWD Board. (Published April 29, 2014)
Source: Santa Clara Valley Water District
Climate Change Topics: Energy management and conservation / Santa Clara Valley Water District staff presentations /
(Posted September 16, 2014)

 

Why More Trees in the Sierra Mean Less Water for California

News article Why More Trees in the Sierra Mean Less Water for California (Published September 15, 2014)
Source: KQED Radio
Climate Change Topics: Water supply, changes in supply, snowpack / California: Statewide /
(Posted September 15, 2014)

 

Rules of thumb for climate change turned upside down: Wet and dry regions recalculated

News article Rules of thumb for climate change turned upside down: Wet and dry regions recalculated (Published September 14, 2014)
Source: Science Daily
Climate Change Topics: Drought / Precipitation, Extreme Weather / Water supply, changes in supply, snowpack /
(Posted September 15, 2014)

 

Effective Climate Change Communication for Water Utilities

Report Effective Climate Change Communication for Water Utilities - "This project produced a guidance document to assist water utilities in communicating about climate change, with an emphasis on building support for water utility climate-related adaptation or mitigation investments or projects. A message mapping worksheet is included within the report to help water agencies develop messages that will build long-term support for their specific climate-related actions. The worksheet is also available under Project Resources/Project Papers as a Microsoft Word template for utilities to build their own message mapping strategy. Lastly, the project produced a video to provide water professionals with the information they need to understand the relationship among water, water utility needs, and climate change. Links to the video are available in the report and Executive Summary." (Published September 12, 2014)
Source: Water Research Foundation
Climate Change Topics: Water utilities guidance /
(Posted September 15, 2014)

 

2014 California Adaptation Forum Videos and Presentations

Report 2014 California Adaptation Forum Videos and Presentations - Videos and presentations on adaptation as it relates to flood management, water and ecosystem planning, coastal fog, supply chains, sea-level rise, drought, and more. (Published August 20, 2014)
Climate Change Topics: Adaptation / California: Statewide / Drought / Ecosystems, Habitat, Threatened Species / Energy management and conservation / Flooding / Land Use, environmental management systems, and regulation / Sea level rise /
(Posted September 12, 2014)

 

Early Spring, Severe Frost Events, and Drought Induce Rapid Carbon Loss in High Elevation Meadows

Report Early Spring, Severe Frost Events, and Drought Induce Rapid Carbon Loss in High Elevation Meadows - "By the end of the 20th century, the onset of spring in the Sierra Nevada mountain range of California has been occurring on average three weeks earlier than historic records. Superimposed on this trend is an increase in the presence of highly anomalous 'extreme' years, where spring arrives either significantly late or early. The timing of the onset of continuous snowpack coupled to the date at which the snowmelt season is initiated play an important role in the development and sustainability of mountain ecosystems. In this study, we assess the impact of extreme winter precipitation variation on aboveground net primary productivity and soil respiration over three years (2011 to 2013). We found that the duration of snow cover, particularly the timing of the onset of a continuous snowpack and presence of early spring frost events contributed to a dramatic change in ecosystem processes. We found an average 100% increase in soil respiration in 2012 and 2103, compared to 2011, and an average 39% decline in aboveground net primary productivity observed over the same time period. The overall growing season length increased by 57 days in 2012 and 61 days in 2013. These results demonstrate the dependency of these keystone ecosystems on a stable climate and indicate that even small changes in climate can potentially alter their resiliency." (Arnold, C., 2014, PLoS One) (Published September 10, 2014)
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 12, 2014)

 

Calif. Plans Nation's Most Detailed Sea Level Database

News article Calif. Plans Nation's Most Detailed Sea Level Database (Published September 11, 2014)
Source: Climate Central
Climate Change Topics: California: Statewide / Sea level rise /
(Posted September 11, 2014)

 

Researchers link climate change, vegetation and water

News article Researchers link climate change, vegetation and water (Published September 9, 2014)
Source: Fresno Bee
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 10, 2014)

 

Ontogeny influences sensitivity to climate change stressors in an endangered fish

Report Ontogeny influences sensitivity to climate change stressors in an endangered fish - "In the San Francisco Estuary, the Delta Smelt (Hypomesus transpacificus) is an endemic, endangered fish strongly tied to Californian conservation planning. The complex life history of Delta Smelt combined with dynamic seasonal and spatial abiotic conditions result in dissimilar environments experienced among ontogenetic stages, which may yield stage-specific susceptibility to abiotic stressors. Climate change is forecasted to increase San Francisco Estuary water temperature and salinity; therefore, understanding the influences of ontogeny and phenotypic plasticity on tolerance to these critical environmental parameters is particularly important for Delta Smelt and other San Francisco Estuary fishes. We assessed thermal and salinity limits in several ontogenetic stages and acclimation states of Delta Smelt, and paired these data with environmental data to evaluate sensitivity to climate-change stressors. Thermal tolerance decreased among successive stages, with larval fish exhibiting the highest tolerance and post-spawning adults having the lowest. Delta Smelt had limited capacity to increase tolerance through thermal acclimation, and comparisons with field temperature data revealed that juvenile tolerance limits are the closest to current environmental conditions, which may make this stage especially susceptible to future climate warming." (Komoroske, L. M., et al., 2014, Conservation Physiology) (Published January 20, 2014)
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species /
(Posted September 10, 2014)

 

Climate, Drought, and Change

Report Climate, Drought, and Change - "California possesses a uniquely variable Mediterranean climate that relies on a few big winter storms to build a snowpack that provides spring runoff to the Delta watershed. Over the past three water years, fewer storms than expected have hit the state leading to severe drought conditions with some record-setting characteristics. This seminar will examine the meteorology and hydrology of the past three water years and place current conditions within the context of observed decadal variation and longer historical climate records." Presentation by state climatologist Michael Anderson. (Published August 25, 2014)
Source: Delta Stewardship Council
Climate Change Topics: California: Bay Area and Delta / California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted September 10, 2014)

 

U.N. climate agency reports carbon dioxide growing at alarming rate

News article U.N. climate agency reports carbon dioxide growing at alarming rate (Published September 10, 2014)
Source: Los Angeles Times
Climate Change Topics: Greenhouse gas (GHG) increases /
(Posted September 9, 2014)

 

Climate change threatens many of the nation's bird species

News article Climate change threatens many of the nation's bird species (Published September 9, 2014)
Source: San Jose Mercury News
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted September 9, 2014)

 

A slow-motion disaster gnaws at US shores as sea level rises

News article A slow-motion disaster gnaws at US shores as sea level rises (Published September 4, 2014)
Source: Reuters
Climate Change Topics: Sea level rise /
(Posted September 5, 2014)

 

More Trees Means Less Water for California's Mountain Rivers

News article More Trees Means Less Water for California's Mountain Rivers (Published September 1, 2014)
Source: Circle of Blue
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 5, 2014)

 

Q&A: Does Sacramento face a future of water shortages?

News article Q&A: Does Sacramento face a future of water shortages? (Published September 2, 2014)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 2, 2014)

 

As California Warms, Greener Mountains Will Mean Less Water for People

News article As California Warms, Greener Mountains Will Mean Less Water for People (Published September 1, 2014)
Source: National Geographic
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 2, 2014)

 

Assessing the risk of persistent drought using climate model simulations and paleoclimate data

Report Assessing the risk of persistent drought using climate model simulations and paleoclimate data - "Projected changes in global rainfall patterns will likely alter water supplies and ecosystems in semiarid regions during the coming century. Instrumental and paleoclimate data indicate that natural hydroclimate fluctuations tend to be more energetic at low (multidecadal to multicentury) than at high (interannual) frequencies. State-of-the-art global climate models do not capture this characteristic of hydroclimate variability, suggesting that the models underestimate the risk of future persistent droughts. Methods are developed here for assessing the risk of such events in the coming century using climate model projections as well as observational (paleoclimate) information. Where instrumental and paleoclimate data are reliable, these methods may provide a more complete view of prolonged drought risk. In the US Southwest, for instance, state-of-the-art climate model projections suggest the risk of a decade-scale megadrought in the coming century is less than 50%; our analysis suggests that the risk is at least 80%, and may be higher than 90% in certain areas. The likelihood of longer lived events (> 35 years) is between 20% and 50%, and the risk of an unprecedented 50 year megadrought is non-negligible under the most severe warming scenario (5-10%). These findings are important to consider as adaptation and mitigation strategies are developed to cope with regional impacts of climate change, where population growth is high and multidecadal megadrought -- worse than anything seen during the last 2000 years -- would pose unprecedented challenges to water resources in the region." (Ault, T. R., et al., 2014, Journal of Climate) (Published January 22, 2014)
Climate Change Topics: Drought /
(Posted September 2, 2014)

 

Mountain runoff vulnerability to increased evapotranspiration with vegetation expansion

Report Mountain runoff vulnerability to increased evapotranspiration with vegetation expansion - "Climate change has the potential to reduce the supply of surface water by accelerating mountain vegetation growth and evapotranspiration (ET), though the likelihood and severity of this effect are poorly known. We used the upper Kings River basin in California's Sierra Nevada as a case study of the sensitivity of runoff to increased ET with warming. We found that Kings River flow is highly sensitive to vegetation expansion; warming projected for 2100 could increase ET across the Kings River watershed by 28% and decrease riverflow by 26%. Moreover, we found a consistent relationship between watershed ET and temperature across the Sierra Nevada; this consistency implies a potential widespread reduction in water supply with warming, with important implications for California's economy and environment." (Goulden, M. L. and R. C. Bales, 2014, Proceedings of the National Academy of Sciences) (Published September 2, 2014)
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted September 2, 2014)

 

Does Antarctic sea ice growth negate climate change? Scientists say no

News article Does Antarctic sea ice growth negate climate change? Scientists say no (Published August 29, 2014)
Source: Los Angeles Times
Climate Change Topics: Sea and Polar ice /
(Posted August 29, 2014)

 

Global warming slowdown answer lies in depths of Atlantic, study finds

News article Global warming slowdown answer lies in depths of Atlantic, study finds (Published August 29, 2014)
Source: Environmental Research Web
Climate Change Topics: Temperature /
(Posted August 29, 2014)

 

U.N. Draft Report Lists Unchecked Emissions' Risks (IPCC)

News article U.N. Draft Report Lists Unchecked Emissions' Risks (IPCC) (Published August 27, 2014)
Source: New York Times
Climate Change Topics: Agriculture / Global issues, human impacts / Greenhouse gas (GHG) increases / Politics, laws, United Nations, etc. / Sea and Polar ice / Temperature /
(Posted August 28, 2014)

 

Southwest U.S. may face 'megadrought' this century

News article Southwest U.S. may face 'megadrought' this century (Published August 27, 2014)
Source: Science Daily
Climate Change Topics: Drought /
(Posted August 28, 2014)

 

Stream Temperature Variability: Why It Matters to Salmon

Report Stream Temperature Variability: Why It Matters to Salmon - "Salmon evolved in natural river systems, where temperatures fluctuate daily, weekly, seasonally, and all along a stream’s path -- from the mountains to the sea. Climate change and human activities alter this natural variability. Dams, for example, tend to reduce thermal fluctuations. Currently, scientists gauge habitat suitability for aquatic species by establishing minimum/maximum temperature thresholds and relying on mean temperature readings to establish management priorities. But temperature effects on salmon are more complex. A new study demonstrates that temperature variability can affect emergence timing in Chinook salmon, potentially altering predictions about how these fish may respond to a changing climate. It also reveals that genetics can make a difference in how an individual responds to stream temperature variance." (Published July 11, 2014)
Source: United States. Forest Service
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted August 28, 2014)

 

Climate Prediction Center GIS Portal

Report Climate Prediction Center GIS Portal - Displays precipitation, sea-surface temperature, and global forecast system data on a world map. (Published )
Source: United States. National Weather Service
Climate Change Topics: Models and Tools / Precipitation, Extreme Weather / Temperature /
(Posted August 28, 2014)

 

National Adaptation Forum Webinar Series: Live from the California Adaptation Forum

Report National Adaptation Forum Webinar Series: Live from the California Adaptation Forum - Audio from the forum, Aug. 20, 2014 (1 hour) (Published August 20, 2014)
Climate Change Topics: Adaptation / California: Statewide /
(Posted August 28, 2014)

 

Sea Level Rise: A Slow-Moving Emergency

Report Sea Level Rise: A Slow-Moving Emergency - Among the findings: Key segments of the economy are at risk, infrastructure is at risk, extreme storms and king tides add to vulnerability, saltwater intrusion and erosions are problems. (California State Assembly Select Committee Sea Level Rise and the California Economy, Aug. 2014) (Published August 1, 2014)
Source: California. Legislature
Climate Change Topics: California: Statewide / Flooding / Precipitation, Extreme Weather / Sea level rise /
(Posted August 26, 2014)

 

Climate change and drought are forcing us to upgrade our water systems

News article Climate change and drought are forcing us to upgrade our water systems (Published August 24, 2014)
Source: Living on Earth
Climate Change Topics: Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted August 25, 2014)

 

Climate Change Could Happen Slower for the Next Decade, Study Says

News article Climate Change Could Happen Slower for the Next Decade, Study Says (Published August 22, 2014)
Source: Time magazine
Climate Change Topics: Temperature /
(Posted August 25, 2014)

 

Sunlight, not microbes, key to carbon dioxide in Arctic

News article Sunlight, not microbes, key to carbon dioxide in Arctic (Published August 22, 2014)
Source: Science Daily
Climate Change Topics: Greenhouse gas (GHG) increases /
(Posted August 22, 2014)

 

2030 could be 'cross-over year' for climate change responsibility

News article 2030 could be 'cross-over year' for climate change responsibility (Published August 20, 2014)
Source: Environmental Research Web
Climate Change Topics: Adaptation / Greenhouse gas (GHG) reduction, mitigation /
(Posted August 20, 2014)

 

Sun's activity influences natural climate change, ice age study shows

News article Sun's activity influences natural climate change, ice age study shows (Published August 19, 2014)
Source: Science Daily
Climate Change Topics: Temperature /
(Posted August 19, 2014)

 

Ocean warming could drive heavy rain bands toward poles

News article Ocean warming could drive heavy rain bands toward poles (Published August 19, 2014)
Source: Science Daily
Climate Change Topics: Precipitation, Extreme Weather /
(Posted August 19, 2014)

 

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