Santa Clara Valley Water District

Climate Change Blog


 

RSS Feed

Adapting to Rising Tides Bay Shoreline Flood Exlorer

Report Adapting to Rising Tides Bay Shoreline Flood Exlorer - "The Adapting to Rising Tides program has developed this website to help Bay Area communities prepare for the impacts of current and future flooding due to sea level rise and storm surges by learning about causes of flooding, exploring maps of flood risk along our shoreline, and downloading the data for further analysis. These maps increase understanding of what could be at risk without future planning and adaptation, helping Bay communities, governments, and businesses to drive action." (Published May 27, 2019)
Source: San Francisco Bay Conservation and Development Commission
Climate Change Topics: Adaptation / California: Bay Area and Delta / Flooding / Sea level rise /
(Posted June 12, 2019)

 

Where Will All the Water Go?

News article Where Will All the Water Go? (Published June 4, 2019)
Source: Weather Channel
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted June 5, 2019)

 

Streams could 'come in and out' of WOTUS with climate change

News article Streams could 'come in and out' of WOTUS with climate change (Published June 3, 2019)
Source: E&E Publishing LLC
Climate Change Topics: Federal Regulations, EPA, Clean Air Act / Streamflow /
(Posted June 4, 2019)

 

Adaptation: Calif. uses untested powers for 'managed retreat'

News article Adaptation: Calif. uses untested powers for 'managed retreat' (Published May 30, 2019)
Source: E&E Publishing LLC
Climate Change Topics: Adaptation / California: Statewide / Sea level rise / Land Use, environmental management systems, and regulation /
(Posted May 31, 2019)

 

Changes in climate continue to make surveying watersheds tricky. 'But we can change that' (Opinion)

News article Changes in climate continue to make surveying watersheds tricky. 'But we can change that' (Opinion) (Published May 30, 2019)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted May 30, 2019)

 

CA Water Commission: DWR's Climate Change Vulnerability Assessment

News article CA Water Commission: DWR's Climate Change Vulnerability Assessment (Published May 30, 2019)
Source: Maven's Notebook
Climate Change Topics: California: Statewide / Ecosystems, Habitat, Threatened Species / Temperature / Water supply, changes in supply, snowpack / Wildfires /
(Posted May 30, 2019)

 

Trump Administration Hardens Its Attack on Climate Science

News article Trump Administration Hardens Its Attack on Climate Science (Published May 27, 2019)
Source: New York Times
Climate Change Topics: Politics, laws, United Nations, etc. / Research /
(Posted May 29, 2019)

 

Climate Solutions Already Exist in Nature, a Reminder (Opinion)

News article Climate Solutions Already Exist in Nature, a Reminder (Opinion) (Published May 28, 2019)
Source: Bay Nature
Climate Change Topics: Ecosystem Services and Climate Change / Greenhouse gas (GHG) reduction, mitigation /
(Posted May 29, 2019)

 

A New Atlas for Dealing With Rising Seas in the Bay Area

News article A New Atlas for Dealing With Rising Seas in the Bay Area
Related Link: https://www.sfei.org/adaptationatlas
(Published May 24, 2019)
Source: Bay Nature
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted May 28, 2019)

 

Millions of People Should Prepare to be Displaced by Potential 6.5 Foot Sea Level Rise by 2100, Experts Say

News article Millions of People Should Prepare to be Displaced by Potential 6.5 Foot Sea Level Rise by 2100, Experts Say (Published May 21, 2019)
Source: Weather Channel
Climate Change Topics: Sea level rise / Global issues, human impacts /
(Posted May 22, 2019)

 

Climate Change Risks Faced by California's State Water Project

Report Climate Change Risks Faced by California's State Water Project - "A 'bottom-up' climate change vulnerability assessment conducted by the California Department of Water Resources." A story map presenting risks such as long-term persistent hydrologic change and sea level rise. Keyword: SWP (Published May 22, 2019)
Source: California. Dept. of Water Resources
Climate Change Topics: California: Bay Area and Delta / California: Statewide / Sea level rise / Water supply, changes in supply, snowpack /
(Posted May 22, 2019)

 

Decision Scaling (DS): Decision Support for Climate Change

Report Decision Scaling (DS): Decision Support for Climate Change - "Adaptation planning and climate risk management are examples of decision processes made under climate uncertainty. A variety of approaches exist for helping an analyst to evaluate alternatives over future unknown states of the world. However, climate uncertainty requires additional considerations, including how to use available climate information, such as climate change projections, to inform the decision process without overwhelming it. Decision Scaling is specifically designed to support decisionmaking under climate uncertainty while it is general enough to address other uncertainties. The process is designed to make the best and most efficient use of uncertain but potentially useful climate change projections. DS consists of three steps: Decision Framing, Climate Stress Test, and Estimating Climate-Informed Risks. This is accomplished by using weather generator tools and systematic sampling algorithms to create an unbiased description of system response to plausible climate changes.Climate information is incorporated as a sensitivity factor in the last stage of analysis for aiding the process of prioritizing risks or choosing among adaptation options through evaluation of probabilities of underperforming strategies and the need for adaptation. An important benefit of using DS is the establishment of open lines of communication and trust among the analysts, decisionmakers, and representative stakeholders. This is achieved through frequent consultation and validation of models that will be used for the analysis." Includes case study on water supply of Colorado Springs, Colo. (Brown, C., 2019, Decision Making Under Deep Uncertainty) (Published April 5, 2019)
Climate Change Topics: Adaptation / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted May 22, 2019)

 

L.A. has a plan for combating climate change. But is it realistic? (Opinion)

News article L.A. has a plan for combating climate change. But is it realistic? (Opinion) (Published May 21, 2019)
Source: Los Angeles Times
Climate Change Topics: Adaptation / California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted May 21, 2019)

 

States sign short-term Colorado River drought plan, but global warming looms over long-term solutions

News article States sign short-term Colorado River drought plan, but global warming looms over long-term solutions (Published May 21, 2019)
Source: Arizona Republic
Climate Change Topics: Drought / Streamflow / Water supply, changes in supply, snowpack /
(Posted May 21, 2019)

 

Sea levels may rise much faster than previously predicted, swamping coastal cities such as Shanghai, study finds

News article Sea levels may rise much faster than previously predicted, swamping coastal cities such as Shanghai, study finds
Related Link: https://www.pnas.org/content/early/2019/05/14/1817205116
(Published May 21, 2019)
Source: CNN
Climate Change Topics: Flooding / Sea level rise /
(Posted May 21, 2019)

 

Silicon Valley's largest city is sounding the alarm about a drinking water crisis that no one knows how to fix (San Jose, saltwater intrusion)

News article Silicon Valley's largest city is sounding the alarm about a drinking water crisis that no one knows how to fix (San Jose, saltwater intrusion) (Published May 21, 2019)
Source: Business Insider
Climate Change Topics: California: Bay Area and Delta / Drought / Flooding / Groundwater / Water quality / Sea level rise /
(Posted May 21, 2019)

 

Ice sheet contributions to future sea-level rise from structured expert judgment

Report Ice sheet contributions to future sea-level rise from structured expert judgment - "Future sea level rise (SLR) poses serious threats to the viability of coastal communities, but continues to be challenging to project using deterministic modeling approaches. Nonetheless, adaptation strategies urgently require quantification of future SLR uncertainties, particularly upper-end estimates. Structured expert judgement (SEJ) has proved a valuable approach for similar problems. Our findings, using SEJ, produce probability distributions with long upper tails that are influenced by interdependencies between processes and ice sheets. We find that a global total SLR exceeding 2 m by 2100 lies within the 90% uncertainty bounds for a high emission scenario. This is more than twice the upper value put forward by the Intergovernmental Panel on Climate Change in the Fifth Assessment Report." (Bamber, J. L., et al., 2019, Proceedings of the National Academy of Sciences. Edited by Rahmstorf, S.) (Published May 20, 2019)
Climate Change Topics: Sea and Polar ice / Sea level rise /
(Posted May 21, 2019)

 

California's Infrastructure Earns a C-. We Need More Equitable and Climate-Safe Infrastructure Now (Opinion)

News article California's Infrastructure Earns a C-. We Need More Equitable and Climate-Safe Infrastructure Now (Opinion) (Published May 17, 2019)
Source: Union of Concerned Scientists
Climate Change Topics: Adaptation / California: Statewide /
(Posted May 20, 2019)

 

Climate Adaptation Isn't Surrender. It's Survival

News article Climate Adaptation Isn't Surrender. It's Survival (Published May 17, 2019)
Source: Wired
Climate Change Topics: Adaptation /
(Posted May 17, 2019)

 

Climate Action Plan, Phase 3: Climate Change Vulnerability Assessment

Report Climate Action Plan, Phase 3: Climate Change Vulnerability Assessment - "This climate change vulnerability assessment (VA) provides the first evaluation of its kind for facilities owned and operated by DWR and the activities that DWR performs. This analysis draws from the extensive body of knowledge about climate change and attempts to evaluate, describe, and quantify -- where possible -- DWR's vulnerabilities to expected increases in wildfire, extreme heat, and sea-level rise, as well as to changes in hydrology and ecosystems that will impact DWR’s facilities, operations, and other activities." Keywords: Phase III (Published April 2, 2019)
Source: California. Dept. of Water Resources
Climate Change Topics: California: Statewide / Ecosystems, Habitat, Threatened Species / Sea level rise / Temperature / Water supply, changes in supply, snowpack / Wildfires / Sample Climate Action Plans /
(Posted May 15, 2019)

 

Decision Scaling Climate Vulnerability Assessment for the California Department of Water Resources Final Report

Report Decision Scaling Climate Vulnerability Assessment for the California Department of Water Resources Final Report - "This assessment of long-term and persistent hydrologic impacts of climate change focuses on the effects to the operation of the State Water Project (SWP), including ecological conditions that dictate operating rules. DWR owns and operates the SWP for flood control, maintenance of environmental and water quality conditions, water supply, hydropower, and recreation. Consequently, analysis of SWP performance under climate-changed conditions yields an array of impact metrics across these areas of concern. The analysis focuses on persistent medium- and long-term conditions evaluated at a monthly time-step. Short-duration extreme precipitation events that cause flooding may also stress water resource management but are beyond the scope of this study." Also known as: Climate Change Risks Faced by the Central Valley Water Resource System: Final Report. Keyword: CVS (Published May 15, 2019)
Source: California. Dept. of Water Resources
Climate Change Topics: Adaptation / California: Statewide / Drought / Precipitation, Extreme Weather / Water supply, changes in supply, snowpack /
(Posted May 15, 2019)

 

Water-Energy Nexus Registry

Report Water-Energy Nexus Registry - "The first-ever voluntary registry for greenhouse gas emissions resulting from the water-energy nexus. Open to organizations with operations in California." (CalEPA and The Climate Registry) (Published May 14, 2019)
Climate Change Topics: Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation / Registries and Protocols / Water utilities guidance / Water-Energy-Climate Calculations /
(Posted May 14, 2019)

 

Planning for Rising Waters: Sea Level, Groundwater and the Bay Edge

Report Planning for Rising Waters: Sea Level, Groundwater and the Bay Edge - "For years most coastal and Bay communities have focused their efforts on responding to sea level rise by planning and building sea walls, berms and other protective barriers against the water that will come ashore and threaten properties, shore ecosystems and infrastructure. However, until recently, many communities have missed an important consequence of sea level rise -- the concurrent rise of groundwater." (Prof. Kristina Hill, presented by Save Palo Alto's Groundwater and the City of Palo Alto) (90-min. video) (Published April 24, 2019)
Source: University of California, Berkeley
Climate Change Topics: California: Bay Area and Delta / Flooding / Groundwater / Sea level rise /
(Posted May 13, 2019)

 

How better wastewater management can help California adapt to climate change (Opinion)

News article How better wastewater management can help California adapt to climate change (Opinion) (Published May 9, 2019)
Source: CALMatters
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted May 9, 2019)

 

Wildfire burn zones depleting snowpack across West, which fuels more fires and snow loss, research shows

News article Wildfire burn zones depleting snowpack across West, which fuels more fires and snow loss, research shows (Published May 9, 2019)
Source: Reno Gazette-Journal
Climate Change Topics: Water supply, changes in supply, snowpack / Wildfires /
(Posted May 9, 2019)

 

Excluding hydropower makes no sense (Column)

News article Excluding hydropower makes no sense (Column) (Published May 9, 2019)
Source: CALMatters
Climate Change Topics: Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation /
(Posted May 9, 2019)

 

Manuel Oliva's career has been focused on climate change and conservation (Point Blue)

News article Manuel Oliva's career has been focused on climate change and conservation (Point Blue) (Published May 6, 2019)
Source: Estuary News
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species /
(Posted May 7, 2019)

 

Dave Halsing is in a race against sea level rise to restore the South Bay salt ponds

News article Dave Halsing is in a race against sea level rise to restore the South Bay salt ponds (Published May 6, 2019)
Source: Estuary News
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Sea level rise /
(Posted May 7, 2019)

 

Dana Brechwald is trying to bring rising sea levels to the forefront of the conversation for Bay Area communities and their affiliated agencies (BCDC)

News article Dana Brechwald is trying to bring rising sea levels to the forefront of the conversation for Bay Area communities and their affiliated agencies (BCDC) (Published May 6, 2019)
Source: Estuary News
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted May 7, 2019)

 

Humans Are Speeding Extinction and Altering the Natural World at an 'Unprecedented' Pace

News article Humans Are Speeding Extinction and Altering the Natural World at an 'Unprecedented' Pace (Published May 6, 2019)
Source: New York Times
Climate Change Topics: Ecosystem Services and Climate Change / Ecosystems, Habitat, Threatened Species / Global issues, human impacts /
(Posted May 7, 2019)

 

Hundreds Of California Species At Risk Of Extinction, United Nations Report Says -- In Addition To Millions Globally

News article Hundreds Of California Species At Risk Of Extinction, United Nations Report Says -- In Addition To Millions Globally
Related Link: https://www.ipbes.net/news/ipbes-global-assessment-summary-policymakers-pdf
(Published May 6, 2019)
Source: Capital Public Radio
Climate Change Topics: California: Statewide / Ecosystem Services and Climate Change / Ecosystems, Habitat, Threatened Species / Global issues, human impacts /
(Posted May 7, 2019)

 

NOAA Offers Climate Data for Counties

News article NOAA Offers Climate Data for Counties (Published May 6, 2019)
Source: U.S. National Oceanic and Atmospheric Administration
Climate Change Topics: Models and Tools /
(Posted May 7, 2019)

 

IPBES Global Assessment Summary for Policymakers

Report IPBES Global Assessment Summary for Policymakers - "Nature and its vital contributions to people, which together embody biodiversity and ecosystem functions and services, are deteriorating worldwide. . . . Direct and indirect drivers of change have accelerated during the past 50 years. . . . Goals for conserving and sustainably using nature and achieving sustainability cannot be met by current trajectories, and goals for 2030 and beyond may only be achieved through transformative3 changes across economic, social, political and technological factors. . . . Nature can be conserved, restored and used sustainably while simultaneously meeting other global societal goals through urgent and concerted efforts fostering transformative change." (Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services, an arm of the United Nations) (Published May 6, 2019)
Climate Change Topics: Ecosystem Services and Climate Change / Ecosystems, Habitat, Threatened Species / Global issues, human impacts / Politics, laws, United Nations, etc. /
(Posted May 7, 2019)

 

Marin aids in creation of San Francisco Bay sea-level rise defense 'cookbook'

News article Marin aids in creation of San Francisco Bay sea-level rise defense 'cookbook' (Published May 3, 2019)
Source: Marin Independent-Journal
Climate Change Topics: Adaptation / California: Bay Area and Delta / Flooding / Sea level rise /
(Posted May 3, 2019)

 

Study Finds San Francisco Bay is Sinking Faster than Expected; Sea-Level Rise isn't the Only Factor in Bay Area's Future Flooding Risk

News article Study Finds San Francisco Bay is Sinking Faster than Expected; Sea-Level Rise isn't the Only Factor in Bay Area's Future Flooding Risk
Related Link: https://advances.sciencemag.org/content/4/3/eaap9234
(Published April 30, 2019)
Source: ENR (Engineering News-Record)
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted May 3, 2019)

 

Cities on the bay will see flooding within 30 years (Letter)

News article Cities on the bay will see flooding within 30 years (Letter) (Published May 2, 2019)
Source: San Jose Mercury News
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted May 2, 2019)

 

San Francisco Bay: New plan to combat sea level rise

News article San Francisco Bay: New plan to combat sea level rise
Related Link: https://www.sfei.org/adaptationatlas
(Published May 2, 2019)
Source: San Jose Mercury News
Climate Change Topics: Adaptation / California: Bay Area and Delta / Flooding / Sea level rise /
(Posted May 2, 2019)

 

Blueprint to battle Bay Area sea-level rise focuses on natural solutions

News article Blueprint to battle Bay Area sea-level rise focuses on natural solutions (Published May 2, 2019)
Source: San Francisco Chronicle
Climate Change Topics: Adaptation / California: Bay Area and Delta / Flooding / Sea level rise /
(Posted May 2, 2019)

 

In tree rings, signs that climate change started boosting drought risk long ago

News article In tree rings, signs that climate change started boosting drought risk long ago
Related Link: https://www.nature.com/articles/s41586-019-1149-8
(Published May 2, 2019)
Source: Los Angeles Times
Climate Change Topics: Drought /
(Posted May 2, 2019)

 

Climate change has contributed to droughts since 1900 -- and may get worse

News article Climate change has contributed to droughts since 1900 -- and may get worse (Published May 1, 2019)
Source: National Geographic
Climate Change Topics: Drought /
(Posted May 2, 2019)

 

Oysters to defend San Francisco Bay from sea level rise? Marin research shows promising results

News article Oysters to defend San Francisco Bay from sea level rise? Marin research shows promising results (Published May 1, 2019)
Source: Marin Independent-Journal
Climate Change Topics: California: Bay Area and Delta / Ecosystem Services and Climate Change / Flooding / Sea level rise /
(Posted May 1, 2019)

 

The Vicious Climate-Wildfire Cycle

News article The Vicious Climate-Wildfire Cycle (Published April 30, 2019)
Source: Union of Concerned Scientists
Climate Change Topics: Greenhouse gas (GHG) increases / Wildfires /
(Posted May 1, 2019)

 

Executive Order N-10-19

Report Executive Order N-10-19 - Governor's order to state agencies to assess the state's water needs and plan a water resilience portfolio in light of climate change. (Published April 29, 2019)
Source: California. Governor's Office
Climate Change Topics: Adaptation / California: Statewide / Water quality / Water supply, changes in supply, snowpack /
(Posted May 1, 2019)

 

Adaptation Clearinghouse

Report Adaptation Clearinghouse - "Explore the clearinghouse database to find resources on climate adaptation and resiliency efforts in California" (Published )
Climate Change Topics: Adaptation / Agriculture / California: Statewide / Ecosystems, Habitat, Threatened Species / Energy management and conservation / Sea level rise / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted May 1, 2019)

 

L.A. Mayor Garcetti's 'Green New Deal' would phase out gas-fueled cars

News article L.A. Mayor Garcetti's 'Green New Deal' would phase out gas-fueled cars (Published April 30, 2019)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted April 30, 2019)

 

Climate change looms over Trump infrastructure meeting with Democrats

News article Climate change looms over Trump infrastructure meeting with Democrats (Published April 30, 2019)
Source: Sacramento Bee
Climate Change Topics: Politics, laws, United Nations, etc. /
(Posted April 30, 2019)

 

Gov. Newsom issues executive order demanding drought-climate plan

News article Gov. Newsom issues executive order demanding drought-climate plan
Related Link: https://www.gov.ca.gov/wp-content/uploads/2019/04/4.29.19-EO-N-10-19-Attested.pdf
(Published April 30, 2019)
Source: San Francisco Chronicle
Climate Change Topics: Adaptation / California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted April 30, 2019)

 

Few details in Newsom's water policy directive

News article Few details in Newsom's water policy directive (Published April 30, 2019)
Source: Los Angeles Times
Climate Change Topics: Adaptation / California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted April 30, 2019)

 

Disturbing levels of carbon dioxide likely to increase ocean acidity fast, scientists say

News article Disturbing levels of carbon dioxide likely to increase ocean acidity fast, scientists say (Published April 25, 2019)
Source: San Francisco Chronicle
Climate Change Topics: Greenhouse gas (GHG) increases /
(Posted April 25, 2019)

 

Video: Managing Wastewater in a Changing Climate (including COO Nina Hawk)

News article Video: Managing Wastewater in a Changing Climate (including COO Nina Hawk) (Published April 24, 2019)
Source: Public Policy Institute of California
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted April 25, 2019)

 

As Bay Area heats up, Gov. Gavin Newsom warns of coming wildfire danger

News article As Bay Area heats up, Gov. Gavin Newsom warns of coming wildfire danger (Published April 24, 2019)
Source: San Francisco Chronicle
Climate Change Topics: California: Bay Area and Delta / Wildfires /
(Posted April 24, 2019)

 

San Francisco Bay Shoreline Adaptation Atlas

Report San Francisco Bay Shoreline Adaptation Atlas - "A critical tool for this process is a science-based framework for developing adaptation strategies that are appropriate for the diverse shoreline of the Bay and that take advantage of natural processes. This report propsoes such a framework. Operational Landscape Units (OLUs) were created to address the question, 'Can we work with nature's jurisdictions to adapt to sea level rise?' " (Published May 2, 2019)
Source: San Francisco Estuary Institute
Climate Change Topics: Adaptation / California: Bay Area and Delta / Flooding / Sea level rise /
(Posted April 24, 2019)

 

California Has Farmers Growing Weeds. Why? To Capture Carbon

News article California Has Farmers Growing Weeds. Why? To Capture Carbon (Published April 22, 2019)
Source: KQED Radio
Climate Change Topics: Agriculture / Ecosystem Services and Climate Change / Greenhouse gas (GHG) reduction, mitigation /
(Posted April 22, 2019)

 

Managing Wastewater in a Changing Climate

Report Managing Wastewater in a Changing Climate - "Many wastewater agencies are pursuing specific changes to their operations, infrastructure, or finances in response to the cascade of challenges they experienced during the latest drought. A PPIC survey of wastewater agencies done as part of this study found a high degree of concern in the sector about adapting to a changing climate. This report recommends policy and management changes to help build resilience in three broad areas: maintaining water quality in the face of changing water use . . ., making smart recycled water investments . . ., balancing conflicting objectives within watersheds." (Published April 16, 2019)
Source: Public Policy Institute of California
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted April 17, 2019)

 

As climate change erodes US coastlines, an invasive plant could become an ally (Phragmites)

News article As climate change erodes US coastlines, an invasive plant could become an ally (Phragmites) (Published April 3, 2019)
Source: The Conversation
Climate Change Topics: Ecosystem Services and Climate Change / Flooding / Sea level rise /
(Posted April 11, 2019)

 

From ruined bridges to dirty air, EPA scientists price out the cost of climate change

News article From ruined bridges to dirty air, EPA scientists price out the cost of climate change
Related Link: https://www.nature.com/articles/s41558-019-0444-6
(Published April 9, 2019)
Source: Los Angeles Times
Climate Change Topics: Economic aspects, Costs / Ecosystems, Habitat, Threatened Species / Flooding / Temperature / Water supply, changes in supply, snowpack /
(Posted April 9, 2019)

 

Despite Billions in Losses and Clear Financial Dangers, Companies Slow to Respond to Water Risks

News article Despite Billions in Losses and Clear Financial Dangers, Companies Slow to Respond to Water Risks (Published April 9, 2019)
Source: Circle of Blue
Climate Change Topics: Water-Supply Related Risks: Insurance Industry Responses /
(Posted April 9, 2019)

 

Climate damages and adaptation potential across diverse sectors of the United States

Report Climate damages and adaptation potential across diverse sectors of the United States - "There is a growing capability to project the impacts and economic effects of climate change across multiple sectors. This information is needed to inform decisions regarding the diversity and magnitude of future climate impacts and explore how mitigation and adaptation actions might affect these risks. Here, we summarize results from sectoral impact models applied within a consistent modelling framework to project how climate change will affect 22 impact sectors of the United States, including effects on human health, infrastructure and agriculture. The results show complex patterns of projected changes across the country, with damages in some sectors (for example, labour, extreme temperature mortality and coastal property) estimated to range in the hundreds of billions of US dollars annually by the end of the century under high emissions. Inclusion of a large number of sectors shows that there are no regions that escape some mix of adverse impacts. Lower emissions, and adaptation in relevant sectors, would result in substantial economic benefits." (Martinich, J. and A. Crimmins, 2019, Nature Climate Change) (Published April 8, 2019)
Source: United States. Environmental Protection Agency
Climate Change Topics: Agriculture / Economic aspects, Costs / Ecosystems, Habitat, Threatened Species / Flooding / Global issues, human impacts / Sea level rise / Temperature / Water quality / Water supply, changes in supply, snowpack / Wildfires /
(Posted April 9, 2019)

 

Half A Degree More Warming May Cause Dramatic Differences On Drought-Flood Compound Risks

News article Half A Degree More Warming May Cause Dramatic Differences On Drought-Flood Compound Risks
Related Link: https://www.nature.com/articles/s41598-019-39936-2
(Published March 26, 2019)
Source: Water Online
Climate Change Topics: Drought / Flooding / Greenhouse gas (GHG) increases /
(Posted April 4, 2019)

 

Event-to-event intensification of the hydrologic cycle from 1.5 degree C to a 2 degree C warmer world

Report Event-to-event intensification of the hydrologic cycle from 1.5 degree C to a 2 degree C warmer world - "The Paris agreement was adopted to hold the global average temperature increase to well below 2 degrees C and pursue efforts to limit it to 1.5 degrees C. Here, we investigate the event-to-event hydroclimatic intensity, where an event is a pair of adjacent wet and dry spells, under future warming scenarios. According to a set of targeted multi-model large ensemble experiments, event-wise intensification will significantly increase globally for an additional 0.5 degree C warming beyond 1.5 degrees C. In high latitudinal regions of the North American continent and Eurasia, this intensification is likely to involve overwhelming increases in wet spell intensity. Western and Eastern North America will likely experience more intense wet spells with negligible changes of dry spells. For the Mediterranean region, enhancement of dry spells seems to be dominating compared to the decrease in wet spell strength, and this will lead to an overall event-wise intensification. Furthermore, the extreme intensification could be 10 times stronger than the mean intensification. The high damage potential of such drastic changes between flood and drought conditions poses a major challenge to adaptation, and the findings suggest that risks could be substantially reduced by achieving a 1.5 degree C target." (Madakumbura, G. D., 2019, Scientific Reports) (Published March 5, 2019)
Climate Change Topics: Drought / Flooding / Greenhouse gas (GHG) increases /
(Posted April 3, 2019)

 

Why the next decade will be critical in the fight against climate change

News article Why the next decade will be critical in the fight against climate change (Published March 30, 2019)
Source: Los Angeles Times
Climate Change Topics: Greenhouse gas (GHG) increases / Greenhouse gas (GHG) reduction, mitigation /
(Posted April 2, 2019)

 

Cities under pressure in changing climate

News article Cities under pressure in changing climate (Published March 27, 2019)
Source: Science Daily
Climate Change Topics: Adaptation / Flooding / Greenhouse gas (GHG) reduction, mitigation / Land Use, environmental management systems, and regulation /
(Posted March 29, 2019)

 

What Climate Change Could Mean for the Future of California's Springtime Snowpack

News article What Climate Change Could Mean for the Future of California's Springtime Snowpack (Published March 29, 2019)
Source: Union of Concerned Scientists
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted March 29, 2019)

 

SF to put seawall bond money to work

News article SF to put seawall bond money to work (Published March 28, 2019)
Source: San Francisco Examiner
Climate Change Topics: Adaptation / California: Bay Area and Delta / Flooding / Sea level rise /
(Posted March 28, 2019)

 

How Cities Can Protect Themselves from Rising Waters

News article How Cities Can Protect Themselves from Rising Waters (Published March 28, 2019)
Source: Scientific American
Climate Change Topics: Adaptation / Flooding / Sea level rise /
(Posted March 28, 2019)

 

Atmospheric rivers: California could experience more intense rains in the future

News article Atmospheric rivers: California could experience more intense rains in the future (Published March 27, 2019)
Source: Yale Climate Connections
Climate Change Topics: California: Statewide / Precipitation, Extreme Weather /
(Posted March 27, 2019)

 

Rising Seas Bring Rising Water Management Challenges

News article Rising Seas Bring Rising Water Management Challenges (Published March 26, 2019)
Source: Public Policy Institute of California
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise / Water quality /
(Posted March 27, 2019)

 

Resilient Strategies Guide for Water Utilities

Report Resilient Strategies Guide for Water Utilities - "This Guide outlines the resilience planning process and helps you to identify potential strategies and promote a better understanding of resilience strategies. At the end of the Guide, you can download a report containing all of your selections and submitted information." (Published )
Source: United States. Environmental Protection Agency
Climate Change Topics: Adaptation / Water utilities guidance /
(Posted March 27, 2019)

 

Case Study and Information Exchange

Report Case Study and Information Exchange - "These maps provide links to brief stories of planning efforts being conducted by water utilities across the United States to build resilience to natural hazards and water management challenges. These utilities have shared their experiences and lessons learned with the goal of assisting other water sector utilities that are currently developing their own plans or responding to recent events." Categories: drought, flood, ecosystem changes, service reliability, water quality (Published )
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 March 27, 2019)

 

Building and Measuring Community Resilience

Report Building and Measuring Community Resilience - "Summarizes the existing portfolio of relevant or related resilience measurement efforts and notes gaps and challenges associated with them. It describes how some communities build and measure resilience and offers four key actions that communities could take to build and measure their resilience in order to address gaps identified in current community resilience measurement efforts." (Published March 20, 2019)
Source: National Academies
Climate Change Topics: Adaptation /
(Posted March 27, 2019)

 

The Sea Beneath Us (rising groundwater)

News article The Sea Beneath Us (rising groundwater) (Published March 26, 2019)
Source: Bay Nature
Climate Change Topics: California: Bay Area and Delta / Groundwater / Sea level rise /
(Posted March 26, 2019)

 

Is the Bay Area pushing people to the breaking point? (climate change, water availability cited as reasons)

News article Is the Bay Area pushing people to the breaking point? (climate change, water availability cited as reasons) (Published March 25, 2019)
Source: San Jose Mercury News
Climate Change Topics: California: Bay Area and Delta / Global issues, human impacts / Water supply, changes in supply, snowpack /
(Posted March 25, 2019)

 

Congress: Approve the Colorado River Plan as a model for climate resilience (Opinion)

News article Congress: Approve the Colorado River Plan as a model for climate resilience (Opinion) (Published March 23, 2019)
Source: The Hill
Climate Change Topics: Adaptation / Water supply, changes in supply, snowpack /
(Posted March 25, 2019)

 

What Makes a Catastrophic Flood? And Is Climate Change Causing More of Them?

News article What Makes a Catastrophic Flood? And Is Climate Change Causing More of Them? (Published March 23, 2019)
Source: New York Times
Climate Change Topics: Flooding /
(Posted March 25, 2019)

 

How rising sea levels could impact Delta, Sacramento Valley

News article How rising sea levels could impact Delta, Sacramento Valley (Published March 20, 2019)
Source: KCRA-TV (Sacramento)
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted March 21, 2019)

 

EPA Boss Calls Unsafe Water Bigger Issue Than Climate Change

News article EPA Boss Calls Unsafe Water Bigger Issue Than Climate Change (Published March 20, 2019)
Source: Courthouse News Service
Climate Change Topics: Federal Regulations, EPA, Clean Air Act /
(Posted March 21, 2019)

 

EPA argues for shifting focus from climate change to water

News article EPA argues for shifting focus from climate change to water (Published March 21, 2019)
Source: Associated Press
Climate Change Topics: Federal Regulations, EPA, Clean Air Act /
(Posted March 21, 2019)

 

Promoting Atmospheric-River and Snowmelt-Fueled Biogeomorphic Processes by Restoring River-Floodplain Connectivity in California's Central Valley

Report Promoting Atmospheric-River and Snowmelt-Fueled Biogeomorphic Processes by Restoring River-Floodplain Connectivity in California's Central Valley - "Potential biogeomorphic benefits from intentional levee breaks and weir overflow on the managed floodplain-river system of California’s Sacramento and San Joaquin River watershed (Central Valley) are discussed here. Prior to the nineteenth century, the system was characterized by natural levees alongside complex multichanneled rivers and tributaries, and geomorphic processes such as channel migration and avulsion, typical in lowland floodplain-river systems globally, dominated. Today, the floodplain-river system has been heavily modified with infrastructure such as levee embankments that disconnect floodplains from channels and diminish key processes of floodplain-river ecology. Unintentional levee breaks in river systems where floodplains have been developed for agriculture or urban uses still occur regularly (in a quarter of twentieth century years) and are sometimes catastrophic. Floodplain inundation, erosion, and sedimentation, the dominant geomorphic processes that occur during unintentional levee breaks, are flood risks in such embanked river systems. Climate and flood variability still dictate the frequency of unintentional levee breaks despite many decades of engineering. Of particular consequence are the so-called atmospheric-river (AR) storms. Since 1951, 81 % of breaks have occurred as a result of AR storms and flooding, while most of the rest occurred during snowmelt floods. Intentional levee breaks or planned weir overflows that are designed for floodplain restoration can facilitate a return towards more natural and dynamic biogeomorphic processes. In areas where room for flood-driven geomorphic processes is available on floodplains, local sediment scour and deposition near a levee break promote topographic diversity that enhances vegetation establishment and floodplain habitat. This chapter summarizes our current understanding of climate processes and flood variability that govern unintentional levee breaks or weir overflow. We also review examples of alternative flood management approaches in the Central Valley that promote processes necessary to restore or sustain lowland floodplain biogeomorphology. Future climate-driven changes in flood regime, such as enhanced flooding during winter months or more frequent atmospheric rivers, could be accommodated by additional intentional levee breaks or planned weir overflow for restoration. Implementation of these alternatives could be used to improve restoration policy and management of floods in embanked river floodplains." (Florsheim, J. L. and M. D. Dettinger, 2015, Geomorphic Approaches to Integrated Floodplain Management of Lowland Fluvial Systems in North America and Europe) (Published April 29, 2015)
Climate Change Topics: California: Statewide / Flooding / Precipitation, Extreme Weather /
(Posted March 21, 2019)

 

Wetland mud is 'secret weapon' against climate change

News article Wetland mud is 'secret weapon' against climate change
Related Link: https://www.nature.com/articles/s41586-019-0951-7
(Published March 6, 2019)
Source: BBC
Climate Change Topics: Ecosystem Services and Climate Change / Greenhouse gas (GHG) reduction, mitigation / Sea level rise /
(Posted March 20, 2019)

 

Wetland carbon storage controlled by millennial-scale variation in relative sea-level rise

Report Wetland carbon storage controlled by millennial-scale variation in relative sea-level rise - "Coastal wetlands (mangrove, tidal marsh and seagrass) sustain the highest rates of carbon sequestration per unit area of all natural systems, primarily because of their comparatively high productivity and preservation of organic carbon within sedimentary substrates. Climate change and associated relative sea-level rise (RSLR) have been proposed to increase the rate of organic-carbon burial in coastal wetlands in the first half of the twenty-first century, but these carbon-climate feedback effects have been modelled to diminish over time as wetlands are increasingly submerged and carbon stores become compromised by erosion. Here we show that tidal marshes on coastlines that experienced rapid RSLR over the past few millennia (in the late Holocene, from about 4,200 years ago to the present) have on average 1.7 to 3.7 times higher soil carbon concentrations within 20 centimetres of the surface than those subject to a long period of sea-level stability. This disparity increases with depth, with soil carbon concentrations reduced by a factor of 4.9 to 9.1 at depths of 50 to 100 centimetres. We analyse the response of a wetland exposed to recent rapid RSLR following subsidence associated with pillar collapse in an underlying mine and demonstrate that the gain in carbon accumulation and elevation is proportional to the accommodation space (that is, the space available for mineral and organic material accumulation) created by RSLR. Our results suggest that coastal wetlands characteristic of tectonically stable coastlines have lower carbon storage owing to a lack of accommodation space and that carbon sequestration increases according to the vertical and lateral accommodation space created by RSLR. Such wetlands will provide long-term mitigating feedback effects that are relevant to global climate-carbon modelling." (Rogers, K., et al., 2019, Nature) (Published March 6, 2019)
Climate Change Topics: Ecosystem Services and Climate Change / Greenhouse gas (GHG) reduction, mitigation / Sea level rise /
(Posted March 20, 2019)

 

Palo Alto prepares for sea level rise

News article Palo Alto prepares for sea level rise
Related Link: https://www.cityofpaloalto.org/civicax/filebank/documents/69695
(Published March 19, 2019)
Source: Palo Alto Weekly/Palo Alto Online
Climate Change Topics: Adaptation / California: Bay Area and Delta / Sample Climate Action Plans / Sea level rise /
(Posted March 19, 2019)

 

Climate Advocates Cheer Trump Policy Shift on Flood Insurance

News article Climate Advocates Cheer Trump Policy Shift on Flood Insurance (Published March 18, 2019)
Source: Bloomberg News
Climate Change Topics: Sea-Level and Flood Risks: FEMA or Insurance Industry Responses /
(Posted March 19, 2019)

 

Climate change is hurting migrating waterbirds across the West. It could get worse

News article Climate change is hurting migrating waterbirds across the West. It could get worse (Published March 19, 2019)
Source: Sacramento Bee
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted March 19, 2019)

 

Societal decisions about climate mitigation will have dramatic impacts on eutrophication in the 21st century

Report Societal decisions about climate mitigation will have dramatic impacts on eutrophication in the 21st century - "Excessive nitrogen runoff leads to degraded water quality, harming human and ecosystem health. We examine the impact of changes in land use and land management for six combinations of socioeconomic pathways and climate outcomes, and find that societal choices will substantially impact riverine total nitrogen loading (+54% to -7%) for the continental United States by the end of the century. Regional impacts will be even larger. Increased loading is possible for both high emission and low emission pathways, due to increased food and biofuel demand, respectively. Some pathways, however, suggest that limiting climate change and eutrophication can be achieved concurrently. Precipitation changes will further exacerbate loading, resulting in a net increase of 1 to 68%. . . . Societal and climate trends must therefore both be considered in designing strategies for managing inland and coastal water quality." (Sinha, E., et al., 2019, Nature Communications) (Published February 26, 2019)
Climate Change Topics: Water quality /
(Posted March 19, 2019)

 

Proposed Policy to Plan for Sea Level Rise

Report Proposed Policy to Plan for Sea Level Rise - "The Policy will serve as guidance in developing the more detailed Sea Level Rise Adaptation Plan to protect Palo Alto’s neighborhoods, economy, and Baylands habitat. . . . The Plan will be delivered for Council review by December 2020 and will serve as the Sea Level Rise Implementation Plan chapter of the 2020 S/CAP Update. The Plan will include suggested measures to protect infrastructure, determine sea level height triggers for the Plan's various actions, and initiate adaptation strategies. The adaptation strategies of the Plan will likely include measures such as revising building requirements, staff and public education, and integrating sea level rise policy elements into other City operational procedures and plans." (City of Palo Alto) (Published March 18, 2019)
Climate Change Topics: Adaptation / California: Bay Area and Delta / Land Use, environmental management systems, and regulation / Sea level rise /
(Posted March 19, 2019)

 

USGS study predicts more disastrous effects from sea level rise in Bay Area

News article USGS study predicts more disastrous effects from sea level rise in Bay Area (Published March 17, 2019)
Source: San Francisco Chronicle
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted March 18, 2019)

 

Environmental Groups Turn to Plants for Sea Level Rise in Menlo Park

News article Environmental Groups Turn to Plants for Sea Level Rise in Menlo Park (Published March 15, 2019)
Source: NBC Bay Area (KNTV)
Climate Change Topics: California: Bay Area and Delta / Ecosystem Services and Climate Change / Sea level rise /
(Posted March 18, 2019)

 

Climate change will endanger 3 times more Californians than previous estimates, study says

News article Climate change will endanger 3 times more Californians than previous estimates, study says (Published March 14, 2019)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Flooding / Sea level rise /
(Posted March 14, 2019)

 

As sea level rises, wetlands crank up their carbon storage

News article As sea level rises, wetlands crank up their carbon storage (Published March 14, 2019)
Source: EurekAlert
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Greenhouse gas (GHG) reduction, mitigation / Sea level rise /
(Posted March 14, 2019)

 

Sea Level Rise in Bay Area is Going to Be Much More Destructive Than We Think, Says USGS Study

News article Sea Level Rise in Bay Area is Going to Be Much More Destructive Than We Think, Says USGS Study (Published March 14, 2019)
Source: KQED Radio
Climate Change Topics: Flooding / Sea level rise / California: Bay Area and Delta /
(Posted March 14, 2019)

 

Destruction from sea level rise in California could exceed worst wildfires and earthquakes, new research shows

News article Destruction from sea level rise in California could exceed worst wildfires and earthquakes, new research shows
Related Link: https://www.nature.com/articles/s41598-019-40742-z
(Published March 13, 2019)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Flooding / Sea level rise /
(Posted March 13, 2019)

 

New US Geological Survey-led Research Helps California Coastal Managers Prioritize Planning and Mitigation Efforts Due to Rising Seas and Storms

News article New US Geological Survey-led Research Helps California Coastal Managers Prioritize Planning and Mitigation Efforts Due to Rising Seas and Storms (Published March 13, 2019)
Source: U.S. Geological Survey
Climate Change Topics: California: Statewide / Flooding / Sea level rise /
(Posted March 13, 2019)

 

Dynamic flood modeling essential to assess the coastal impacts of climate change

Report Dynamic flood modeling essential to assess the coastal impacts of climate change - "Coastal inundation due to sea level rise (SLR) is projected to displace hundreds of millions of people worldwide over the next century, creating significant economic, humanitarian, and national-security challenges. However, the majority of previous efforts to characterize potential coastal impacts of climate change have focused primarily on long-term SLR with a static tide level, and have not comprehensively accounted for dynamic physical drivers such as tidal non-linearity, storms, short-term climate variability, erosion response and consequent flooding responses. Here we present a dynamic modeling approach that estimates climate-driven changes in flood-hazard exposure by integrating the effects of SLR, tides, waves, storms, and coastal change (i.e. beach erosion and cliff retreat). We show that for California, USA, the world's 5th largest economy, over $150 billion of property equating to more than 6% of the state’s GDP and 600,000 people could be impacted by dynamic flooding by 2100; a three-fold increase in exposed population than if only SLR and a static coastline are considered. The potential for underestimating societal exposure to coastal flooding is greater for smaller SLR scenarios, up to a seven-fold increase in exposed population and economic interests when considering storm conditions in addition to SLR. These results highlight the importance of including climate-change driven dynamic coastal processes and impacts in both short-term hazard mitigation and long-term adaptation planning." (Barnard, P. L., 2019, Scientific Reports) (Published March 13, 2019)
Source: United States. Geological Survey
Climate Change Topics: California: Statewide / Flooding / Sea level rise /
(Posted March 13, 2019)

 

The US Is Only Decades Away From Widespread Water Shortages, Scientists Warn

News article The US Is Only Decades Away From Widespread Water Shortages, Scientists Warn
Related Link: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018EF001091
(Published March 11, 2019)
Source: ScienceAlert
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted March 11, 2019)

 

Adaptation to Future Water Shortages in the United States Caused by Population Growth and Climate Change

Report Adaptation to Future Water Shortages in the United States Caused by Population Growth and Climate Change - "Population growth and climate change will combine to pose substantial challenges for water management in the United States. Projections of water supply and demand over the 21st century show that in the absence of further adaptation efforts, serious water shortages are likely in some regions. Continued improvements in water use efficiency are likely but will be insufficient to avoid future shortages. Some adaptation measures that have been effective in the past, most importantly large additions to reservoir storage, have little promise. Other major adaptations commonly used in the past, especially instream flow removals and groundwater mining, can substantially lower shortages but have serious external costs. If those costs are to be avoided, transfers from irrigated agriculture probably will be needed and could be substantial." (Brown, T. C., et al., 2019, Earth's Future) (Published February 28, 2019)
Climate Change Topics: Adaptation / Agriculture / Groundwater / Water supply, changes in supply, snowpack /
(Posted March 11, 2019)

 

Climate variability and change of Mediterranean-type climates

Report Climate variability and change of Mediterranean-type climates - "Mediterranean-type climates are defined by temperate, wet winters and hot or warm dry summers and exist at the western edges of five continents in locations determined by the geography of winter storm tracks and summer subtropical anticyclones. The climatology, variability and long term changes in winter precipitation in Mediterranean-type climates, and the mechanisms for model-projected near-term future change, are analyzed. Despite commonalities in terms of location in the context of planetary scale dynamics, the causes of variability are distinct across the regions. Internal atmospheric variability is the dominant source of winter precipitation variability in all Mediterranean-type climate regions, but only in the Mediterranean is this clearly related to annular mode variability. Ocean forcing of variability is a notable influence only for California and Chile. As a consequence, potential predictability of winter precipitation variability in the regions is low. In all regions, the trend in winter precipitation since 1901 is similar to that which arises as a response to changes in external forcing in the models participating in the Coupled Model Intercomparison Project Five. All Mediterranean-type climate regions, except in North America, have dried and the models project further drying over coming decades. In the northern hemisphere, dynamical processes are responsible: development of a winter ridge over the Mediterranean that suppresses precipitation and of a trough west of the North American west coast that shifts the Pacific stormtrack equatorward. In the southern hemisphere, mixed dynamic-thermodynamic changes are important that place a minimum in vertically integrated water vapor change at the coast and enhance zonal dry advection into Mediterranean-type climate regions inland." (Seager, R., 2019, Journal of Climate) (Published March 6, 2019)
Climate Change Topics: California: Statewide / Precipitation, Extreme Weather /
(Posted March 8, 2019)

 

A Long View of California's Climate: Study examines centuries of data to understand climate-wildfire links

News article A Long View of California's Climate: Study examines centuries of data to understand climate-wildfire links
Related Link: https://www.pnas.org/content/early/2019/02/15/1815292116
(Published March 6, 2019)
Source: U.S. National Oceanic and Atmospheric Administration
Climate Change Topics: California: Statewide / Precipitation, Extreme Weather / Wildfires /
(Posted March 6, 2019)

 

Why California's droughts and floods will only get worse

News article Why California's droughts and floods will only get worse (Published March 6, 2019)
Source: Popular Science
Climate Change Topics: California: Statewide / Drought / Flooding / Precipitation, Extreme Weather /
(Posted March 6, 2019)

 

Jet stream dynamics, hydroclimate, and fire in California from 1600 CE to present

Report Jet stream dynamics, hydroclimate, and fire in California from 1600 CE to present - "North Pacific jet stream (NPJ) behavior strongly affects cool-season moisture delivery in California and is an important predictor of summer fire conditions. Reconstructions of the NPJ before modern fire suppression began in the early 20th century identify the relationships between NPJ characteristics and precipitation and fire extremes. After fire suppression, the relationship between the NPJ and precipitation extremes is unchanged, but the NPJ-fire extremes relationship breaks down. Simulations with high CO2 forcing show higher temperatures, reduced snowpack, and drier summers by 2070 to 2100 whether overall precipitation is enhanced or reduced, thereby overriding historical dynamic NPJ precursor conditions and increasing fire potential due to thermodynamic warming. Recent California fires during wet extremes may be early evidence of this change." (Wahl, E. R., et al., 2019, Proceedings of the National Academy of Sciences) (Published March 4, 2019)
Climate Change Topics: California: Statewide / Precipitation, Extreme Weather / Temperature / Water supply, changes in supply, snowpack / Wildfires /
(Posted March 6, 2019)

 

Bay Delta Science Conference: Monitoring and Managing Sea-Level Rise Impacts on Tidal Marshes in the San Francisco Estuary

News article Bay Delta Science Conference: Monitoring and Managing Sea-Level Rise Impacts on Tidal Marshes in the San Francisco Estuary (Published February 28, 2019)
Source: Maven's Notebook
Climate Change Topics: California: Bay Area and Delta / Ecosystems, Habitat, Threatened Species / Sea level rise /
(Posted February 28, 2019)

 

Return to Climate Change Portal

Links on these pages go to sites of interest to the staff of the Santa Clara Valley Water District. Listing a site on these pages does not constitute an endorsement by the District.

Created and maintained by Bob Teeter, District Librarian; organized by Sarah Young



   Copyright 2018 © Santa Clara Valley Water District Contact Us | Site Map