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Climate Change Blog

 

Study role of climate change in extreme threats to water quality

News article Study role of climate change in extreme threats to water quality (Published July 19, 2016)
Source: Nature
Climate Change Topics: Water quality /
(Posted July 21, 2016)

 

Guide for Considering Climate Change in Coastal Conservation

Report Guide for Considering Climate Change in Coastal Conservation - "Climate change is affecting coastal environments, calling for revised conservation approaches, and therefore must be considered in long-term planning. This guide provides a step-by-step approach for incorporating climate change information into new or existing conservation plans. The guide’s six steps draw from existing strategic conservation planning frameworks but focus on climate considerations and key resources specifically relevant to the coastal environment, including coastal watersheds." (Published March 7, 2016)
Source: United States. National Oceanic and Atmospheric Administration
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Sea level rise /
(Posted July 21, 2016)

 

Sea Level Rise

Report Sea Level Rise - "The links on this page provide answers to questions about how much the sea has risen, how much it might rise, and what the impacts might be." (Part of Climate Ready Estuaries) (Published July 7, 2016)
Source: United States. Environmental Protection Agency
Climate Change Topics: Flooding / Sea level rise /
(Posted July 21, 2016)

 

Coastal Adaptation Toolkit

Report Coastal Adaptation Toolkit - "Selected resources about coastal areas and watersheds for practitioners and environmental professionals." (Part of Climate Ready Estuaries) (Published )
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Flooding / Sea level rise /
(Posted July 21, 2016)

 

Climate change in 5 charts

News article Climate change in 5 charts (Published July 20, 2016)
Source: San Jose Mercury News
Climate Change Topics: Greenhouse gas (GHG) increases / Sea and Polar ice / Sea level rise / Temperature /
(Posted July 20, 2016)

 

Historical and Future Relations Between Large Storms and Droughts in California

Report Historical and Future Relations Between Large Storms and Droughts in California - "California precipitation varies more dramatically from year to year than elsewhere in the conterminous United States. This paper analyzes the extent to which contributions of the wettest days to overall precipitation dictate the state’s precipitation seasonality and frequent multiyear periods of drought (as precipitation deficit) and plenty is analyzed, historically and in projections of future climates. The wettest 5% of wet days in California contribute about a third of precipitation but about two-thirds of the variance of water-year precipitation. Year-to-year fluctuations in precipitation strongly reflect year-to-year fluctuations of contributions from the largest storms, with the large-storm contributions explaining about twice as much precipitation fluctuation as do contributions from all remaining storms combined. This extreme dominance of large storms is largely unique to California within the United States. In climate-change projections, eight of ten climate models considered here yield increases in precipitation from the largest storms, and when the increases are large, total precipitation follows suit. All of the models project declines in contributions from the smaller storms and models projecting total-precipitation declines reflect this decline. Projected changes in variance of water-year precipitation reflect changes in variance of large-storm contributions. The disproportionately large overall contributions from California's largest storms, and their outsized year-to-year variability, ensure that the state’s largest storms dictate the state’s regimes of wet and dry spells, historically and in climate-change projections." (Dettinger, M., 2016, San Francisco Estuary and Watershed Science) (Published July 19, 2016)
Climate Change Topics: California: Statewide / Drought / Precipitation, Extreme Weather / Water supply, changes in supply, snowpack /
(Posted July 19, 2016)

 

Less water in Sierra rivers is 'new normal': Three Rivers author

News article Less water in Sierra rivers is 'new normal': Three Rivers author (Published July 17, 2016)
Source: Fresno Bee
Climate Change Topics: California: Statewide / Streamflow / Water supply, changes in supply, snowpack /
(Posted July 18, 2016)

 

Co-producing actionable science for water utilities

Report Co-producing actionable science for water utilities - "This article explores the efforts of four water utilities to co-produce actionable science by forging partnerships with scientific institutions to explore integrating climate considerations into their specific management context. The experiences of these four utilities and their scientific partners, as part of the Piloting Utility Modeling Applications project of the Water Utility Climate Alliance, provide a wealth of empirical evidence to illustrate some of the core concepts formulated to explain how to produce usable information and how to link research to decision making. Through these four case studies of co-production, we identify three findings that bridge principles and practice: each utility engaged in contextualizing research; in building and leveraging knowledge networks; and in embracing an entrepreneurial approach to their research agenda. In several instances, unanticipated but innovative assessment techniques were developed by science partners in collaboration with water utilities to fit the utility’s specific needs. The paper concludes by discussing some of the hard realities of co-production illustrated by these cases that should be kept in mind by people contemplating similar projects." (Vogel, J., et al., 2016, Climate Services) (Published July 7, 2016)
Source: Water Utility Climate Alliance
Climate Change Topics: Models and Tools / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted July 18, 2016)

 

Low Sierra snow seen as piece of alarming climate picture

News article Low Sierra snow seen as piece of alarming climate picture (Published July 14, 2016)
Source: San Francisco Chronicle
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted July 14, 2016)

 

California's climate change program: Jerry Brown pushes extension of cap-and-trade

News article California's climate change program: Jerry Brown pushes extension of cap-and-trade (Published July 13, 2016)
Source: Associated Press
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted July 14, 2016)

 

Palo Alto considers bracing now for sea level rise

News article Palo Alto considers bracing now for sea level rise (Published July 14, 2016)
Source: Palo Alto Daily News
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted July 14, 2016)

 

U.S. Faces Dramatic Rise in Extreme Heat, Humidity

News article U.S. Faces Dramatic Rise in Extreme Heat, Humidity (Published July 13, 2016)
Source: KQED Radio
Climate Change Topics: Temperature /
(Posted July 14, 2016)

 

Boost needed to keep world below 2°C or 1.5°C: study

News article Boost needed to keep world below 2°C or 1.5°C: study (Published July 13, 2016)
Source: Environmental Research Web
Climate Change Topics: Greenhouse gas (GHG) reduction, mitigation / Temperature /
(Posted July 14, 2016)

 

In hot water: climate change is affecting North American fish

News article In hot water: climate change is affecting North American fish (Published July 14, 2016)
Source: Environmental Research Web
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted July 14, 2016)

 

With cap and trade in doubt, key questions go unanswered

News article With cap and trade in doubt, key questions go unanswered (Published July 11, 2016)
Source: Stockton Record
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted July 13, 2016)

 

Climate Change May Already Be Shifting Clouds Toward the Poles

News article Climate Change May Already Be Shifting Clouds Toward the Poles (Published July 11, 2016)
Source: KQED-TV
Climate Change Topics: Clouds, aerosols, air pollution, ozone, humidity /
(Posted July 11, 2016)

 

California Drought, Marine Heat More Likely With Warming

News article California Drought, Marine Heat More Likely With Warming (Published July 11, 2016)
Source: KQED Radio
Climate Change Topics: California: Statewide / Drought / Temperature /
(Posted July 11, 2016)

 

Governor Brown Looks to Extend Climate-Change Efforts

News article Governor Brown Looks to Extend Climate-Change Efforts (Published July 11, 2016)
Source: KQED Radio
Climate Change Topics: AB 32 / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted July 11, 2016)

 

Shoring up the city's edge

News article Shoring up the city's edge (Published July 8, 2016)
Source: San Francisco Chronicle
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted July 8, 2016)

 

"Living Shorelines" Will Get Fast Track to Combat Sea Level Rise

News article "Living Shorelines" Will Get Fast Track to Combat Sea Level Rise (Published July 6, 2016)
Source: Scientific American
Climate Change Topics: Flooding / Sea level rise /
(Posted July 6, 2016)

 

Carlsbad releases sea-level rise assessment

News article Carlsbad releases sea-level rise assessment (Published July 3, 2016)
Source: San Diego Union Tribune
Climate Change Topics: Sea level rise / California: Statewide /
(Posted July 5, 2016)

 

Climate Change is Tipping Scales Toward More Wildfires

News article Climate Change is Tipping Scales Toward More Wildfires (Published June 23, 2016)
Source: KQED Radio
Climate Change Topics: California: Statewide / Wildfires /
(Posted June 24, 2016)

 

How Brexit could hurt progress on fighting climate change and saving the planet

News article How Brexit could hurt progress on fighting climate change and saving the planet (Published June 24, 2016)
Source: Washington Post
Climate Change Topics: Global issues, human impacts / Greenhouse gas (GHG) reduction, mitigation /
(Posted June 24, 2016)

 

Climate Problem or Solution? California's Water Sector Is at a Crossroads as Drought Drags On

News article Climate Problem or Solution? California's Water Sector Is at a Crossroads as Drought Drags On (Published June 23, 2016)
Source: Union of Concerned Scientists
Climate Change Topics: California: Statewide / Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation / Water utilities guidance /
(Posted June 23, 2016)

 

Protecting Drinking Water by Becoming Climate Ready

News article Protecting Drinking Water by Becoming Climate Ready (Published June 16, 2016)
Source: U.S. Environmental Protection Agency
Climate Change Topics: Adaptation / Water utilities guidance /
(Posted June 22, 2016)

 

L.A. will keep getting hotter, scientists say -- a lot hotter

News article L.A. will keep getting hotter, scientists say -- a lot hotter (Published June 21, 2016)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Temperature /
(Posted June 21, 2016)

 

Will Water Sector Help or Hurt on Climate Change?

News article Will Water Sector Help or Hurt on Climate Change? (Published June 21, 2016)
Source: Water Deeply
Climate Change Topics: Energy management and conservation / Water utilities guidance /
(Posted June 21, 2016)

 

Southwest braces for record heat: Is it climate change?

News article Southwest braces for record heat: Is it climate change? (Published June 16, 2016)
Source: Christian Science Monitor
Climate Change Topics: California: Statewide / Temperature /
(Posted June 16, 2016)

 

Aerosols strengthen storm clouds, lead to extreme weather

News article Aerosols strengthen storm clouds, lead to extreme weather (Published June 13, 2016)
Source: Science Daily
Climate Change Topics: Clouds, aerosols, air pollution, ozone, humidity / Precipitation, Extreme Weather /
(Posted June 16, 2016)

 

Climate change, not population growth, plays the main role in predicting extreme droughts, study reveals

News article Climate change, not population growth, plays the main role in predicting extreme droughts, study reveals (Published June 13, 2016)
Source: Science Daily
Climate Change Topics: Drought /
(Posted June 16, 2016)

 

Weakening mechanisms imposed on California's levees under multiyear extreme drought

Report Weakening mechanisms imposed on California's levees under multiyear extreme drought - "California is currently suffering from a multiyear extreme drought and the impacts of the drought are anticipated to worsen with climate change. The resilience of California’s critical infrastructure such as earthen levees under drought conditions is a major concern that is poorly understood. California maintains more than 21,000 km of urban and nonurban levees which protect dry land from floods and deliver two-thirds of the state’s drinking water. Many of these levees are currently operating under a high failure risk condition. This essay argues that California’s protracted drought can further threaten the integrity of these already at-risk levee systems through the imposition of several thermo-hydro-mechanical weakening processes. Pertinent facts and statistics regarding California’s drought and current status of its levees are presented. Lessons from previous catastrophic levee failures and major damages which occurred under similar events are discussed. Weakening processes such as soil-strength reduction, soil desiccation cracking, land subsidence and surface erosion, and microbial oxidation of soil organic carbon are comprehensively evaluated to illustrate the adverse impacts that the ongoing California drought can have on levees. This essay calls for further research in light of these potential drought-induced weakening mechanisms to support adaptation and mitigation strategies to possibly avert future levee failures. These weakening processes can threaten any drought-stricken infrastructure interfacing with soil, including embankments, roads, bridges, building foundations, and pipelines." (Robinson, J. D. and F. Vahedifard, 2016, Climatic Change) (Published March 17, 2016)
Climate Change Topics: California: Statewide / Drought / Flooding /
(Posted June 16, 2016)

 

California's cap-and-trade program faces daunting hurdles to avoid collapse

News article California's cap-and-trade program faces daunting hurdles to avoid collapse (Published June 14, 2016)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted June 15, 2016)

 

Workshop Planner for Climate Change and Extreme Events Adaptation

Report Workshop Planner for Climate Change and Extreme Events Adaptation - "This tool assists drinking water and wastewater utility staff, technical assistance providers, community leaders and other stakeholders in conducting climate change adaptation workshops; it generates materials tailored to your location and provides helpful guidance for hosting a successful workshop." (Registration required.) (Published )
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Precipitation, Extreme Weather / Water utilities guidance /
(Posted June 15, 2016)

 

Adaptation Case Study and Information Exchange

Report Adaptation Case Study and Information Exchange - "This tool allows water sector -- drinking water, wastewater and stormwater -- utilities to learn about climate change adaptation planning efforts from their peers across the United States." Case studies cover drought, floods, ecosystem changes, service demand, water quality, and videos. (Climate Ready Water Utilities) (Published April 13, 2016)
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Drought / Ecosystems, Habitat, Threatened Species / Flooding / Water quality / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted June 15, 2016)

 

How much can 'climate corridors' help?

News article How much can 'climate corridors' help? (Published June 14, 2016)
Source: Environmental Research Web
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted June 14, 2016)

 

Climate change could alter the chemistry of deepwater lakes and harm ecosystems

News article Climate change could alter the chemistry of deepwater lakes and harm ecosystems (Published June 13, 2016)
Source: The Conversation
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Water quality /
(Posted June 14, 2016)

 

Surprising Way Climate Change Is Impacting Water ... what it means for the state's groundwater

News article Surprising Way Climate Change Is Impacting Water ... what it means for the state's groundwater (Published June 14, 2016)
Source: Water Deeply
Climate Change Topics: California: Statewide / Groundwater /
(Posted June 14, 2016)

 

What Climate Change Means for San Diego's Water

News article What Climate Change Means for San Diego's Water
Related Link: http://www.sandiego.edu/2050/
(Published June 13, 2016)
Source: Water Deeply
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted June 13, 2016)

 

A Weatherman Explains California's Volatile Climate

News article A Weatherman Explains California's Volatile Climate (Published June 10, 2016)
Source: Public Policy Institute of California
Climate Change Topics: California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted June 13, 2016)

 

San Diego, 2050 is Calling: How Will We Answer?

Report San Diego, 2050 is Calling: How Will We Answer? - Advises local leaders about expected temperature and precipitation, water resources, wildfires, nature's benefits, and human health in the year 2050. (Published June 10, 2016)
Climate Change Topics: California: Statewide / Ecosystems, Habitat, Threatened Species / Global issues, human impacts / Precipitation, Extreme Weather / Temperature / Water supply, changes in supply, snowpack /
(Posted June 13, 2016)

 

Unabated Global Warming Threatens West's Snowpack, Water Supply

News article Unabated Global Warming Threatens West's Snowpack, Water Supply
Related Link: http://onlinelibrary.wiley.com/doi/10.1002/2016GL068798/full
(Published June 7, 2016)
Source: Inside Climate News
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted June 9, 2016)

 

Danger from extreme storms, high seas to rise, warn Australian researchers

News article Danger from extreme storms, high seas to rise, warn Australian researchers (Published June 8, 2016)
Source: Science Daily
Climate Change Topics: Flooding / Precipitation, Extreme Weather / Sea level rise /
(Posted June 9, 2016)

 

SF Bay restoration: 9-county Measure AA passing

News article SF Bay restoration: 9-county Measure AA passing (Published June 8, 2016)
Source: San Francisco Chronicle
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Flooding / Sea level rise /
(Posted June 8, 2016)

 

San Francisco Bay Restoration Measure Clears Two-Thirds Hurdle

News article San Francisco Bay Restoration Measure Clears Two-Thirds Hurdle (Published June 8, 2016)
Source: KQED Radio
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Flooding / Sea level rise /
(Posted June 8, 2016)

 

Water conservation has saved energy, cut greenhouse gas emissions, study finds

News article Water conservation has saved energy, cut greenhouse gas emissions, study finds (Published June 8, 2016)
Source: Los Angeles Times
Climate Change Topics: Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation /
(Posted June 8, 2016)

 

Landmark San Francisco Bay parcel tax for wetlands, flood control appears to win

News article Landmark San Francisco Bay parcel tax for wetlands, flood control appears to win (Published June 8, 2016)
Source: San Jose Mercury News
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Flooding / Sea level rise /
(Posted June 8, 2016)

 

Allowances for evolving coastal flood risk under uncertain local sea-level rise

Report Allowances for evolving coastal flood risk under uncertain local sea-level rise - "Estimates of future flood hazards made under the assumption of stationary mean sea level are biased low due to sea-level rise (SLR). However, adjustments to flood return levels made assuming fixed increases of sea level are also inadequate when applied to sea level that is rising over time at an uncertain rate. SLR allowances -- the height adjustment from historic flood levels that maintain under uncertainty the annual expected probability of flooding—are typically estimated independently of individual decision-makers’ preferences, such as time horizon, risk tolerance, and confidence in SLR projections. We provide a framework of SLR allowances that employs complete probability distributions of local SLR and a range of user-defined flood risk management preferences. Given non-stationary and uncertain sea-level rise, these metrics provide estimates of flood protection heights and offsets for different planning horizons in coastal areas. We illustrate the calculation of various allowance types for a set of long-duration tide gauges along U.S. coastlines." (Buchanan, M. K., 2016, Climatic Change) (Published June 3, 2016)
Climate Change Topics: Flooding / Sea level rise /
(Posted June 8, 2016)

 

Climate change impact on the roles of temperature and precipitation in western U.S. snowpack variability

Report Climate change impact on the roles of temperature and precipitation in western U.S. snowpack variability - "We employ dynamical downscaling and pseudo global warming methodologies to evaluate climate change impact on the roles of temperature and precipitation in spring snowpack (S) variability across the western United States (U.S.). The negative correlation between S and temperature weakens linearly with elevation, whereas the correlation between S and precipitation increases asymptotically with elevation. The curvilinear relationship in the latter case was not visible in prior studies because of the observation networks' limited range. In our historical validation, there is a range of threshold elevations (1580-2181 m) across six mountainous regions, above which precipitation is the main driver of snowpack variability and below which temperature is the main driver. Under a moderate end-of-century climate change scenario, these thresholds increase by 191 to 432 m. These rising thresholds indicate increasing spatial and elevational vulnerability of western U.S. spring snowpack along with associated impacts to hydrologic and ecologic systems." (Scalzitti, J., 2016, Geophysical Research Letters) (Published May 30, 2016)
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted June 8, 2016)

 

The 'Omega Block' -- Torrential Rains Linked to Extreme Jet Stream Pattern

News article The 'Omega Block' -- Torrential Rains Linked to Extreme Jet Stream Pattern (Published June 3, 2016)
Source: Union of Concerned Scientists
Climate Change Topics: Precipitation, Extreme Weather /
(Posted June 6, 2016)

 

Global warming: Spring snow a no-go?

News article Global warming: Spring snow a no-go? (Published May 26, 2016)
Source: Science Daily
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted June 2, 2016)

 

Palo Alto to create policy for sea-level rise

News article Palo Alto to create policy for sea-level rise (Published June 1, 2016)
Source: Palo Alto Weekly/Palo Alto Online
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted June 1, 2016)

 

San Francisco Bay: $12 parcel tax for wetlands has big financial backers

News article San Francisco Bay: $12 parcel tax for wetlands has big financial backers (Published May 29, 2016)
Source: San Jose Mercury News
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Flooding / Sea level rise /
(Posted May 31, 2016)

 

New cloud formation discovery may lessen warming forecast

News article New cloud formation discovery may lessen warming forecast (Published May 26, 2016)
Source: Associated Press
Climate Change Topics: Clouds, aerosols, air pollution, ozone, humidity /
(Posted May 26, 2016)

 

Bay Area's future depends on managing rising sea levels

News article Bay Area's future depends on managing rising sea levels (Published May 26, 2016)
Source: San Francisco Chronicle
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise / Adaptation /
(Posted May 26, 2016)

 

Large CO2 effluxes at night and during synoptic weather events significantly contribute to CO2 emissions from a reservoir

Report Large CO2 effluxes at night and during synoptic weather events significantly contribute to CO2 emissions from a reservoir - "CO2 emissions from inland waters are commonly determined by indirect methods that are based on the product of a gas transfer coefficient and the concentration gradient at the air water interface (e.g., wind-based gas transfer models). The measurements of concentration gradient are typically collected during the day in fair weather throughout the course of a year. Direct measurements of eddy covariance CO2 fluxes from a large inland water body (Ross Barnett reservoir, Mississippi, USA) show that CO2 effluxes at night are approximately 70% greater than those during the day. At longer time scales, frequent synoptic weather events associated with extratropical cyclones induce CO2 flux pulses, resulting in further increase in annual CO2 effluxes by 16%. Therefore, CO2 emission rates from this reservoir, if these diel and synoptic processes are under-sampled, are likely to be underestimated by approximately 40%." (Liu, H., et al., 2016, Environmental Research Letters) (Published May 24, 2016)
Climate Change Topics: Dams and reservoirs / Greenhouse gas (GHG) increases /
(Posted May 25, 2016)

 

Tools for Assessing the Impacts of Climate Change

Report Tools for Assessing the Impacts of Climate Change - Sources for data for evaluating the impacts of climate change. (California Climate Commons) (Published )
Climate Change Topics: California: Statewide / Models and Tools /
(Posted May 25, 2016)

 

Atmospheric CO2 May Have Topped 400 PPM Permanently

News article Atmospheric CO2 May Have Topped 400 PPM Permanently (Published May 19, 2016)
Source: Inside Climate News
Climate Change Topics: Greenhouse gas (GHG) increases /
(Posted May 24, 2016)

 

Measure AA Seeks Parcel Tax to Protect Bay Area from Rising Seas (Airs at 9:30, recording available later)

News article Measure AA Seeks Parcel Tax to Protect Bay Area from Rising Seas (Airs at 9:30, recording available later) (Published May 24, 2016)
Source: KQED Radio
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Flooding / Sea level rise /
(Posted May 24, 2016)

 

Beyond 2020 and Newhall: A Field Guide to New CEQA Greenhouse Gas Thresholds and Climate Action Plan Targets for California: Draft White Paper

Report Beyond 2020 and Newhall: A Field Guide to New CEQA Greenhouse Gas Thresholds and Climate Action Plan Targets for California: Draft White Paper - "The purpose of this white paper is to suggest defensible GHG thresholds for use in CEQA analyses and GHG reduction targets (respectively) in climate action plans (CAPs), in light of the change in focus on post-2020 reduction targets and in the questions raised in the Newhall Ranch holding." (Association of Environmental Professional) (Published April 3, 2016)
Climate Change Topics: California: Statewide / CEQA Guidelines / Land Use, environmental management systems, and regulation /
(Posted May 24, 2016)

 

Interagency Water Resources and Climate Change Workgroup

Report Interagency Water Resources and Climate Change Workgroup - Site for updates to "Priorities for Managing Freshwater Resources in a Changing Climate: National Action Plan." (Published May 18, 2016)
Climate Change Topics: Models and Tools / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted May 24, 2016)

 

A Warming World Means Less Water, With Economic Consequences

News article A Warming World Means Less Water, With Economic Consequences (Published May 22, 2016)
Source: National Public Radio (NPR)
Climate Change Topics: Economic aspects, Costs / Global issues, human impacts / Water supply, changes in supply, snowpack /
(Posted May 23, 2016)

 

Regional Sea Level Scenarios for Coastal Risk Management: Managing the Uncertainty of Future Sea Level Change and Extreme Water Levels for Department of Defense Coastal Sites Worldwide

Report Regional Sea Level Scenarios for Coastal Risk Management: Managing the Uncertainty of Future Sea Level Change and Extreme Water Levels for Department of Defense Coastal Sites Worldwide - "Global change, including climate change, poses unique challenges to the Department of Defense (DoD). In particular, coastal military sites, and their associated natural and built infrastructure, operations, and readiness capabilities, are vulnerable to the impacts of rising global sea level and local extreme water level (EWL) events. One way to assess vulnerabilities and impacts is to pose plausible and scientifically credible future conditions, or scenarios, with regard to sea level and EWLs. A multi-agency group conducted a literature synthesis and applied research effort to develop such scenarios. This report and its accompanying scenario database provide regionalized sea level and EWL scenarios for three future time horizons (2035, 2065, and 2100) for 1,774 DoD sites worldwide." (Published April 25, 2016)
Source: United States. Dept. of Defense
Climate Change Topics: Flooding / Sea level rise /
(Posted May 18, 2016)

 

Bay Area Voters Will Decide Next Month If They Want To Pay To Adapt To Sea Level Rise

News article Bay Area Voters Will Decide Next Month If They Want To Pay To Adapt To Sea Level Rise (Published May 12, 2016)
Source: Think Progress
Climate Change Topics: Adaptation / California: Bay Area and Delta / Sea level rise /
(Posted May 13, 2016)

 

Sierra Snowmelt peaking earlier

News article Sierra Snowmelt peaking earlier (Published May 13, 2016)
Source: ABC 7 (KGO-TV)
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted May 13, 2016)

 

Abrupt Sea Level Rise Looms

News article Abrupt Sea Level Rise Looms (Published May 5, 2016)
Source: Yale Environment 360
Climate Change Topics: Sea level rise /
(Posted May 12, 2016)

 

Climate models guide billion-dollar water infrastructure decisions in Colorado River basin

News article Climate models guide billion-dollar water infrastructure decisions in Colorado River basin (Published May 11, 2016)
Source: U.S. National Oceanic and Atmospheric Administration
Climate Change Topics: Models and Tools / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted May 12, 2016)

 

Proposed Property Tax To Fight Climate Change Criticized As Unfair

News article Proposed Property Tax To Fight Climate Change Criticized As Unfair (Published May 11, 2016)
Source: National Public Radio (NPR)
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted May 11, 2016)

 

Integrated Climate and Land Use Scenarios (ICLUS)

Report Integrated Climate and Land Use Scenarios (ICLUS) - Generate maps of scenarios for housing density, impervious surfaces, and county populations. (Published April 29, 2016)
Source: United States. Environmental Protection Agency
Climate Change Topics: Land Use, environmental management systems, and regulation / Models and Tools /
(Posted May 11, 2016)

 

Glimpse the Bay Area's future, 100 years from now, in EPA interactive

News article Glimpse the Bay Area's future, 100 years from now, in EPA interactive
Related Link: https://iclus.epa.gov/iclus/
(Published May 10, 2016)
Source: San Francisco Chronicle
Climate Change Topics: California: Bay Area and Delta / Land Use, environmental management systems, and regulation /
(Posted May 10, 2016)

 

In cities, flooding and rainfall extremes to rise as climate changes

News article In cities, flooding and rainfall extremes to rise as climate changes (Published May 9, 2016)
Source: Science Daily
Climate Change Topics: Flooding / Precipitation, Extreme Weather /
(Posted May 10, 2016)

 

Measure AA Asks Bay Area Residents to Help Protect Against Sea Level Rise

News article Measure AA Asks Bay Area Residents to Help Protect Against Sea Level Rise (Published May 9, 2016)
Source: KQED Radio
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted May 10, 2016)

 

Lost in Translation: Engineering, Climate Science, and the Disconnect that Threatens California's Infrastructure

News article Lost in Translation: Engineering, Climate Science, and the Disconnect that Threatens California's Infrastructure (Published May 6, 2016)
Source: Union of Concerned Scientists
Climate Change Topics: California: Statewide / Sea level rise /
(Posted May 6, 2016)

 

To visualize climate change, think about water

News article To visualize climate change, think about water (Published May 4, 2016)
Source: Marketplace Sustainability
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted May 6, 2016)

 

Drought helps predict how climate change might affect an endangered species

News article Drought helps predict how climate change might affect an endangered species
Related Link: http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0154838
(Published May 4, 2016)
Source: UC Santa Cruz
Climate Change Topics: California: Statewide / Ecosystems, Habitat, Threatened Species /
(Posted May 5, 2016)

 

Contemporary Drought and Future Effects of Climate Change on the Endangered Blunt-Nosed Leopard Lizard, Gambelia sila

Report Contemporary Drought and Future Effects of Climate Change on the Endangered Blunt-Nosed Leopard Lizard, Gambelia sila - "Extreme weather events can provide unique opportunities for testing models that predict the effect of climate change. Droughts of increasing severity have been predicted under numerous models, thus contemporary droughts may allow us to test these models prior to the onset of the more extreme effects predicted with a changing climate. In the third year of an ongoing severe drought, surveys failed to detect neonate endangered blunt-nosed leopard lizards in a subset of previously surveyed populations where we expected to see them. By conducting surveys at a large number of sites across the range of the species over a short time span, we were able to establish a strong positive correlation between winter precipitation and the presence of neonate leopard lizards over geographic space. Our results are consistent with those of numerous longitudinal studies and are in accordance with predictive climate change models. We suggest that scientists can take immediate advantage of droughts while they are still in progress to test patterns of occurrence in other drought-sensitive species and thus provide for more robust models of climate change effects on biodiversity." (Westphal, M. F., et al., 2016, PLOS One) (Published May 2, 2016)
Climate Change Topics: California: Statewide / Drought / Ecosystems, Habitat, Threatened Species /
(Posted May 5, 2016)

 

World Bank: The way climate change is really going to hurt us is through water

News article World Bank: The way climate change is really going to hurt us is through water (Published May 4, 2016)
Source: Washington Post
Climate Change Topics: Drought / Flooding / Global issues, human impacts / Precipitation, Extreme Weather / Water supply, changes in supply, snowpack /
(Posted May 3, 2016)

 

How much does groundwater contribute to sea level rise?

News article How much does groundwater contribute to sea level rise? (Published May 2, 2016)
Source: Science Daily
Climate Change Topics: Groundwater / Sea level rise /
(Posted May 3, 2016)

 

2015 Highlights of Progress: Responses to Climate Change by the National Water Program

Report 2015 Highlights of Progress: Responses to Climate Change by the National Water Program - EPA's work in water infrastructure, watersheds and wetlands, coastal waters, and water quality. (Published April 21, 2016)
Source: United States. Environmental Protection Agency
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Water quality / Water supply, changes in supply, snowpack /
(Posted May 2, 2016)

 

Understanding Climate Change Impacts on Water Resources

Report Understanding Climate Change Impacts on Water Resources - "This training module is designed to increase your understanding of the causes of climate change, its potential impacts on water resources, and the challenges water resource managers are facing. The course contains three parts which will take about 45 minutes to complete." Part of the Watershed Academy (Published February 9, 2016)
Source: United States. Environmental Protection Agency
Climate Change Topics: Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted May 2, 2016)

 

Fueling big hopes, South Bay launches alternative utility

News article Fueling big hopes, South Bay launches alternative utility (Published April 22, 2016)
Source: Mountain View Voice
Climate Change Topics: California: Bay Area and Delta / Community Choice Aggregation (CCA) / Renewable energy /
(Posted April 25, 2016)

 

Oro Loma: Can Wastewater Save the Bay from Sea Level Rise?

News article Oro Loma: Can Wastewater Save the Bay from Sea Level Rise? (Published April 21, 2016)
Source: Bay Nature
Climate Change Topics: California: Bay Area and Delta / Ecosystem Services and Climate Change / Sea level rise /
(Posted April 25, 2016)

 

Global warming has made the weather better for most in U.S. -- but don't get used to it, study says

News article Global warming has made the weather better for most in U.S. -- but don't get used to it, study says (Published April 21, 2016)
Source: Los Angeles Times
Climate Change Topics: Temperature /
(Posted April 21, 2016)

 

Earth's hot streak continues for a record 11 months

News article Earth's hot streak continues for a record 11 months (Published April 20, 2016)
Source: Associated Press
Climate Change Topics: Temperature /
(Posted April 20, 2016)

 

U.S. Climate Atlas

Report U.S. Climate Atlas - "These maps are based on the new nClimDiv (New Climate Division) dataset which uses daily observations of temperature and precipitation from over 10,000 stations in the U.S. NCEI scientists are using new methodologies to quality control the daily data, summarize the daily data into monthly values, and creating maps to visualize the information. There are maps for minimum temperature, maximum temperature, and precipitation. There are two types of data that can be displayed; maps for a particular month and year from 1895 to present, or climatology maps. The climatology maps represent average values from 1981 to 2010. These are also known as the '1981-2010 Normals'." (Published April 18, 2016)
Source: United States. National Oceanic and Atmospheric Administration
Climate Change Topics: Models and Tools / Precipitation, Extreme Weather / Temperature /
(Posted April 20, 2016)

 

Most Americans say climate changing, humans to blame

News article Most Americans say climate changing, humans to blame (Published April 19, 2016)
Source: Desert Sun
Climate Change Topics: Politics, laws, United Nations, etc. /
(Posted April 19, 2016)

 

Is the California drought America's water wake-up call? (Opinion, Jay Famiglietti)

News article Is the California drought America's water wake-up call? (Opinion, Jay Famiglietti) (Published April 17, 2016)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted April 18, 2016)

 

New Sea Level Rise Study Calls Delta Tunnels Into Doubt

News article New Sea Level Rise Study Calls Delta Tunnels Into Doubt (Published April 14, 2016)
Source: KCET-TV (Los Angeles)
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted April 15, 2016)

 

Living with less snow in the West: What global warming means for our water supplies

News article Living with less snow in the West: What global warming means for our water supplies (Published April 14, 2016)
Source: Desert Sun
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted April 14, 2016)

 

Stream study provides insight for water storage in the West

News article Stream study provides insight for water storage in the West
Related Link: http://iopscience.iop.org/article/10.1088/1748-9326/11/4/044015/meta
(Published April 13, 2016)
Source: Deseret News
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted April 14, 2016)

 

Restored Wetlands in California May Be Source Of Greenhouse Gases

News article Restored Wetlands in California May Be Source Of Greenhouse Gases (Published April 13, 2016)
Source: Capital Public Radio
Climate Change Topics: California: Statewide / Ecosystem Services and Climate Change / Ecosystems, Habitat, Threatened Species / Greenhouse gas (GHG) increases /
(Posted April 14, 2016)

 

Energy budget increases reduce mean streamflow more than snow-rain transitions: using integrated modeling to isolate climate change impacts on Rocky Mountain hydrology

Report Energy budget increases reduce mean streamflow more than snow-rain transitions: using integrated modeling to isolate climate change impacts on Rocky Mountain hydrology - "In snow-dominated mountain regions, a warming climate is expected to alter two drivers of hydrology: (1) decrease the fraction of precipitation falling as snow; and (2) increase surface energy available to drive evapotranspiration. This study uses a novel integrated modeling approach to explicitly separate energy budget increases via warming from precipitation phase transitions from snow to rain in two mountain headwaters transects of the central Rocky Mountains. Both phase transitions and energy increases had significant, though unique, impacts on semi-arid mountain hydrology in our simulations. A complete shift in precipitation from snow to rain reduced streamflow between 11% and 18%, while 4 degrees C of uniform warming reduced streamflow between 19% and 23%, suggesting that changes in energy-driven evaporative loss, between 27% and 29% for these uniform warming scenarios, may be the dominant driver of annual mean streamflow in a warming climate. Phase changes induced a flashier system, making water availability more susceptible to precipitation variability and eliminating the runoff signature characteristic of snowmelt-dominated systems. The impact of a phase change on mean streamflow was reduced as aridity increased from west to east of the continental divide." (Foster, L. M., et al., 2016, Environmental Research Letters) (Published April 13, 2016)
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted April 14, 2016)

 

The downside risk of climate change in California's Central Valley agricultural sector

Report The downside risk of climate change in California's Central Valley agricultural sector - "Downscaled climate change projections for California, when translated into changes in irrigation water delivery and then into profit from agriculture in the Central Valley, show an increase in conventional measures of variability such as the variance. However, these increases are modest and mask a more pronounced increase in downside risk, defined as the probability of unfavorable outcomes of water supply or profit. This paper describes the concept of downside risk and measures it as it applies to outcomes for Central Valley agriculture projected under four climate change scenarios. We compare the effect of downside risk aversion versus conventional risk aversion or risk neutrality when assessing the impact of climate change on the profitability of Central Valley agriculture. We find that, when downside risk is considered, the assessment of losses due to climate change increases substantially." (Hanemann, M., et al., 2016, Climatic Change) (Published April 4, 2016)
Climate Change Topics: Agriculture / California: Statewide /
(Posted April 13, 2016)

 

Another study says warming may be worse than experts think

News article Another study says warming may be worse than experts think
Related Link: http://science.sciencemag.org/content/352/6282/224
(Published April 12, 2016)
Source: San Francisco Chronicle
Climate Change Topics: Clouds, aerosols, air pollution, ozone, humidity / Temperature /
(Posted April 12, 2016)

 

Observational constraints on mixed-phase clouds imply higher climate sensitivity

Report Observational constraints on mixed-phase clouds imply higher climate sensitivity - "Global climate model (GCM) estimates of the equilibrium global mean surface temperature response to a doubling of atmospheric CO2, measured by the equilibrium climate sensitivity (ECS), range from 2.0 degrees to 4.6 degrees C. Clouds are among the leading causes of this uncertainty. Here we show that the ECS can be up to 1.3 degrees C higher in simulations where mixed-phase clouds consisting of ice crystals and supercooled liquid droplets are constrained by global satellite observations. The higher ECS estimates are directly linked to a weakened cloud-phase feedback arising from a decreased cloud glaciation rate in a warmer climate. We point out the need for realistic representations of the supercooled liquid fraction in mixed-phase clouds in GCMs, given the sensitivity of the ECS to the cloud-phase feedback." (Tan, I., et al., 2016, Science) (Published April 8, 2016)
Climate Change Topics: Clouds, aerosols, air pollution, ozone, humidity / Temperature /
(Posted April 12, 2016)

 

San Francisco Bay Shore Inventory: Mapping for Sea Level Rise Planning

Report San Francisco Bay Shore Inventory: Mapping for Sea Level Rise Planning - "To provide a comprehensive and consistent picture of today’s Bay shore, SFEI mapped and inventoried Bay shore features that could affect flooding and flood routing for all nine Bay Area counties. While many different detailed levee layers exist, the region currently lacks a standardized regional dataset of elevated Bay shore features, accredited or not. Mapping extends up to 10 feet above Mean Higher High Water and includes many shore features: engineered levees, berms, embankments, transportation structures, wetlands, natural shoreline, channel openings, and water control structures. Features were attributed with elevation, FEMA accreditation, how a structure was armored, whether a structure was fronted by a wetland or beach, ownership, and the entity responsible for maintenance, if known." GIS dataset and report available. (Published April 7, 2016)
Source: San Francisco Estuary Institute
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted April 8, 2016)

 

NASA Sea Level Change Portal

Report NASA Sea Level Change Portal - Explanations, news, data on sea level rise. (Published April 4, 2016)
Climate Change Topics: Sea level rise /
(Posted April 6, 2016)

 

The Impacts of Climate Change on Human Health in the United States: A Scientific Assessment

Report The Impacts of Climate Change on Human Health in the United States: A Scientific Assessment - Includes projections of seasonal and geographic changes in waterborne illness risk, increased exposure risk from runoff from extreme precipitation, and increased water infrastructure failure (chapter 6). (Published April 4, 2016)
Source: United States. Global Change Research Program
Climate Change Topics: Global issues, human impacts / Precipitation, Extreme Weather / Water quality /
(Posted April 6, 2016)

 

California's drought: Get used to it, scientists say

News article California's drought: Get used to it, scientists say (Published April 2, 2016)
Source: San Francisco Chronicle
Climate Change Topics: California: Statewide / Drought /
(Posted April 4, 2016)

 

Sea-level rise could nearly double over earlier estimates in next 100 years

News article Sea-level rise could nearly double over earlier estimates in next 100 years
Related Link: http://www.nature.com/nature/journal/v531/n7596/full/nature17145.html
(Published March 30, 2016)
Source: Science Daily
Climate Change Topics: Sea and Polar ice / Sea level rise /
(Posted April 4, 2016)

 

Rise of the ridiculously resilient ridge: California drought patterns becoming more common

News article Rise of the ridiculously resilient ridge: California drought patterns becoming more common (Published April 1, 2016)
Source: Science Daily
Climate Change Topics: California: Statewide / Drought /
(Posted April 4, 2016)

 

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