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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 /
(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)

 

Weak El Niños Like This Year's May Become Rarer with Warming

News article Weak El Niños Like This Year's May Become Rarer with Warming (Published February 27, 2019)
Source: Scientific American
Climate Change Topics: Precipitation, Extreme Weather /
(Posted February 27, 2019)

 

Natural Variability Has Slowed the Decline in Western U.S. Snowpack Since the 1980s

Report Natural Variability Has Slowed the Decline in Western U.S. Snowpack Since the 1980s - "Spring snowpack in the mountains of the western United States has not declined substantially since the 1980s, despite significant global and regional warming. Here we show that this apparent insensitivity of snowpack to warming is a result of changes in the atmospheric circulation over the western United States, which have reduced snowpack losses due to warming. Climate model simulations indicate that the observed circulation changes have been driven in part by a shift in Pacific sea surface temperatures that is attributable to natural variability, and not part of the simulated response to anthropogenic forcing. Removing the influence of natural variability reveals a robust anthropogenic decline in western U.S. snowpack since the 1980s, particularly during the early months of the accumulation season (October–November). These results suggest that the recent stability of western U.S. snowpack will be followed by a period of accelerated decline once the current mode of natural variability subsides." (Siler, N., 2018, Geophysical Research Letters) (Published December 17, 2018)
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted February 27, 2019)

 

White House to set up panel to counter climate change consensus, officials say

News article White House to set up panel to counter climate change consensus, officials say (Published February 25, 2019)
Source: Washington Post
Climate Change Topics: Politics, laws, United Nations, etc. / Skepticism /
(Posted February 25, 2019)

 

Why Aren't We Using Nature to Fight Climate Change?

News article Why Aren't We Using Nature to Fight Climate Change? (Published February 22, 2019)
Source: Pacific Standard
Climate Change Topics: Ecosystem Services and Climate Change / Greenhouse gas (GHG) reduction, mitigation /
(Posted February 25, 2019)

 

Climate change means more floods, great and localized

News article Climate change means more floods, great and localized (Published February 18, 2019)
Source: Associated Press
Climate Change Topics: Flooding /
(Posted February 19, 2019)

 

Research forms complex picture of mercury pollution in a period of global change

News article Research forms complex picture of mercury pollution in a period of global change (Published February 14, 2019)
Source: Science Daily
Climate Change Topics: Water quality /
(Posted February 19, 2019)

 

Rebroadcast: Future of Cities in a Changing Climate (52-min. audio)

News article Rebroadcast: Future of Cities in a Changing Climate (52-min. audio) (Published February 18, 2019)
Source: KQED Radio
Climate Change Topics: Adaptation /
(Posted February 19, 2019)

 

Santa Clara County builds coalition to tackle climate change

News article Santa Clara County builds coalition to tackle climate change (Published February 14, 2019)
Source: Peninsula Press
Climate Change Topics: California: Bay Area and Delta / Greenhouse gas (GHG) reduction, mitigation / Renewable energy /
(Posted February 19, 2019)

 

Another Looming Climate Disaster: Dam Collapses

News article Another Looming Climate Disaster: Dam Collapses (Published February 14, 2019)
Source: Buzzfeed News
Climate Change Topics: Dams and reservoirs /
(Posted February 15, 2019)

 

This scary map shows how climate change will transform your city

News article This scary map shows how climate change will transform your city (Published February 12, 2019)
Source: Wired
Climate Change Topics: Temperature /
(Posted February 13, 2019)

 

That Northern California climate you love? It's gonna have a more SoCal feel

News article That Northern California climate you love? It's gonna have a more SoCal feel (Published February 13, 2019)
Source: East Bay Times
Climate Change Topics: California: Statewide / Temperature /
(Posted February 13, 2019)

 

Climate Change and Groundwater: Incorporating Climate Realities and Uncertainties into California's Groundwater Planning

News article Climate Change and Groundwater: Incorporating Climate Realities and Uncertainties into California's Groundwater Planning (Published February 11, 2019)
Source: Water in the West (Stanford University)
Climate Change Topics: California: Statewide / Groundwater /
(Posted February 13, 2019)

 

Gov. Newsom can confront climate change by restoring what we once had (Opinion)

News article Gov. Newsom can confront climate change by restoring what we once had (Opinion) (Published February 12, 2019)
Source: CALMatters
Climate Change Topics: California: Statewide / Ecosystem Services and Climate Change / Ecosystems, Habitat, Threatened Species /
(Posted February 12, 2019)

 

How landscape plants have an impact on the carbon footprint

News article How landscape plants have an impact on the carbon footprint (Published February 6, 2019)
Source: Science Daily
Climate Change Topics: Greenhouse gas (GHG) increases /
(Posted February 12, 2019)

 

Rating riverside corridors -- the 'escape routes' for animals under climate change

News article Rating riverside corridors -- the 'escape routes' for animals under climate change (Published February 8, 2019)
Source: Science Daily
Climate Change Topics: Ecosystems, Habitat, Threatened Species /
(Posted February 11, 2019)

 

Trump Touts Infrastructure in State of the Union; Ignores Climate Change

News article Trump Touts Infrastructure in State of the Union; Ignores Climate Change (Published February 6, 2019)
Source: Scientific American
Climate Change Topics: Politics, laws, United Nations, etc. /
(Posted February 7, 2019)

 

These swaths of San Francisco will be underwater in just 70 years, models suggest

News article These swaths of San Francisco will be underwater in just 70 years, models suggest (Published February 7, 2019)
Source: San Francisco Chronicle
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted February 7, 2019)

 

Sea level rise agency takes shape

News article Sea level rise agency takes shape (Published February 4, 2019)
Source: San Mateo Daily Journal
Climate Change Topics: California: Bay Area and Delta / Sea level rise /
(Posted February 4, 2019)

 

How Climate Change Drives Disaster Cascades

News article How Climate Change Drives Disaster Cascades (Published January 29, 2019)
Source: Public Policy Institute of California
Climate Change Topics: California: Statewide / Precipitation, Extreme Weather / Wildfires / Drought /
(Posted January 31, 2019)

 

Seas may be rising faster than thought

News article Seas may be rising faster than thought (Published January 30, 2019)
Source: Science Daily
Climate Change Topics: Sea level rise /
(Posted January 31, 2019)

 

Federal agency after Trump tweet: Winter storms don't disprove climate change

News article Federal agency after Trump tweet: Winter storms don't disprove climate change (Published January 29, 2019)
Source: The Hill
Climate Change Topics: Politics, laws, United Nations, etc. / Skepticism /
(Posted January 30, 2019)

 

Towards operational predictions of the near-term climate

Report Towards operational predictions of the near-term climate - "Near-term climate predictions -- which operate on annual to decadal timescales -- offer benefits for climate adaptation and resilience, and are thus important for society. Although skillful near-term predictions are now possible, particularly when coupled models are initialized from the current climate state (most importantly from the ocean), several scientific challenges remain, including gaps in understanding and modelling the underlying physical mechanisms. This Perspective discusses how these challenges can be overcome, outlining concrete steps towards the provision of operational near-term climate predictions. Progress in this endeavour will bridge the gap between current seasonal forecasts and century-scale climate change projections, allowing a seamless climate service delivery chain to be established." (Kushnir, Y., et al., Nature Climate Change, 2019) (Published January 21, 2019)
Climate Change Topics: Adaptation / Models and Tools /
(Posted January 23, 2019)

 

Silicon Valley Clean Energy takes additional steps to reduce local carbon emissions

News article Silicon Valley Clean Energy takes additional steps to reduce local carbon emissions (Published January 18, 2019)
Source: Silicon Valley Community Newspapers
Climate Change Topics: California: Bay Area and Delta / Community Choice Aggregation (CCA) / Greenhouse gas (GHG) reduction, mitigation /
(Posted January 22, 2019)

 

San Jose Clean Energy: What you need to know

News article San Jose Clean Energy: What you need to know (Published January 19, 2019)
Source: San Jose Mercury News
Climate Change Topics: California: Water/Flood Protection Districts / Community Choice Aggregation (CCA) /
(Posted January 22, 2019)

 

PG&E's bankruptcy could slow California's fight against climate change

News article PG&E's bankruptcy could slow California's fight against climate change (Published January 16, 2019)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Energy management and conservation / Greenhouse gas (GHG) reduction, mitigation /
(Posted January 22, 2019)

 

We need to rethink everything we know about global warming (aerosols)

News article We need to rethink everything we know about global warming (aerosols) (Published January 22, 2019)
Source: Science Daily
Climate Change Topics: Clouds, aerosols, air pollution, ozone, humidity /
(Posted January 22, 2019)

 

Marin County Sea Level Rise Publications

Report Marin County Sea Level Rise Publications - Marin ocean coast sea level rise adaptation report and vulnerability assessment. "The Adaptation Report is not a plan, but rather an informational document compiling adaptation options proposed to date to set the foundation for continued planning in West Marin." "The C-SMART project team gathered information from technical advisors, utility managers, and coastal residents about potential sea level rise impacts. The resulting Marin Ocean Coast Vulnerability Assessment summarizes the expected timing and extent of impacts, laying a foundation of knowledge to guide adaptation planning." (Published December 11, 2018)
Climate Change Topics: Adaptation / California: Bay Area and Delta / Sea level rise /
(Posted January 9, 2019)

 

Gavin Newsom Has the Opportunity to Make Climate Change Adaptation California's Priority

News article Gavin Newsom Has the Opportunity to Make Climate Change Adaptation California's Priority (Published January 7, 2019)
Source: Bay Nature
Climate Change Topics: Adaptation / California: Statewide /
(Posted January 8, 2019)

 

Trump Administration Sits on Billions in Storm Protection Money

News article Trump Administration Sits on Billions in Storm Protection Money (Published January 3, 2019)
Source: Bloomberg News
Climate Change Topics: Federal Regulations, EPA, Clean Air Act / Precipitation, Extreme Weather /
(Posted January 7, 2019)

 

Mike Bloomberg names San Jose winner in Bloomberg American Cities Climate Challenge

News article Mike Bloomberg names San Jose winner in Bloomberg American Cities Climate Challenge (Published December 28, 2018)
Source: Almaden Times
Climate Change Topics: California: Bay Area and Delta / Greenhouse gas (GHG) reduction, mitigation /
(Posted January 4, 2019)

 

CA WATER COMMISSION: Climate change effects on the State Water Project and Central Valley Project

News article CA WATER COMMISSION: Climate change effects on the State Water Project and Central Valley Project (Published January 3, 2019)
Source: Maven's Notebook
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted January 3, 2019)

 

Like Fruit, Vegetables, and Almonds? Scientists Have Bad News.

News article Like Fruit, Vegetables, and Almonds? Scientists Have Bad News. (Published January 1, 2019)
Source: Mother Jones
Climate Change Topics: Agriculture /
(Posted January 2, 2019)

 

California's coastal habitats face existential threat from rising seas

News article California's coastal habitats face existential threat from rising seas (Published December 31, 2018)
Source: Guardian (U.K.)
Climate Change Topics: California: Statewide / Sea level rise /
(Posted January 2, 2019)

 

Winter is shrinking, Scripps study finds, posing new fire, water risks

News article Winter is shrinking, Scripps study finds, posing new fire, water risks
Related Link: https://journals.ametsoc.org/doi/abs/10.1175/JAMC-D-18-0150.1
(Published December 31, 2018)
Source: San Diego Union Tribune
Climate Change Topics: Water supply, changes in supply, snowpack / Wildfires /
(Posted January 2, 2019)

 

2018 Another Dry Year for California

News article 2018 Another Dry Year for California (Published December 31, 2018)
Source: Courthouse News Service
Climate Change Topics: California: Statewide / Drought / Water supply, changes in supply, snowpack /
(Posted January 2, 2019)

 

A New Method to Characterize Changes in the Seasonal Cycle of Snowpack

Report A New Method to Characterize Changes in the Seasonal Cycle of Snowpack - "In the western US, water stored as mountain snowpack comprises a large percentage of the total water needed to meet the region’s demands, and it is likely that as the planet continues to warm, mountain snowpack will decline. However, detecting such trends in the observational record is challenging because snowpack is highly variable in both space and time. Here, a method for characterizing mountain snowpack is developed, which is based on fitting observed annual cycles of SWE to a gamma distribution probability density function. A new method for spatially interpolating the distribution fitting parameters in order to create a gridded climatology of SWE is also presented. Analysis of these data show robust trends in the shape of the annual cycle of snowpack in the western US. Specifically, over the 1982–2017 water years, the annual cycle of snowpack is becoming more narrow and more gaussian. A narrowing of the annual cycle corresponds to a shrinking of the length of the winter season, primarily because snowpack melting is commencing earlier in the water year. As the annual cycle of snowpack at high elevations tends to be more skewed than at lower elevations, a more gaussian shape suggests that snowpack is becoming more characteristic of that at lower elevations. Although no robust downward trends in annual mean SWE are found, robust trends in the shape of the SWE annual cycle have implications for regional water resources." (Evan, A. T., 2018, Journal of Applied Meteorology and Climatology) (Published December 12, 2018)
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted January 2, 2019)

 

Smart land use policy can help combat climate change (Opinion)

News article Smart land use policy can help combat climate change (Opinion) (Published December 28, 2018)
Source: CALMatters
Climate Change Topics: Greenhouse gas (GHG) reduction, mitigation / Land Use, environmental management systems, and regulation /
(Posted December 31, 2018)

 

California's droughts hurt fight against climate change. Study tells us why

News article California's droughts hurt fight against climate change. Study tells us why (Published December 29, 2018)
Source: San Francisco Chronicle
Climate Change Topics: California: Statewide / Drought / Energy management and conservation /
(Posted December 31, 2018)

 

2018 Was A Milestone Year For Climate Science (If Not Politics)

News article 2018 Was A Milestone Year For Climate Science (If Not Politics) (Published December 28, 2018)
Source: National Public Radio (NPR)
Climate Change Topics: Politics, laws, United Nations, etc. / Precipitation, Extreme Weather / Temperature /
(Posted December 28, 2018)

 

Commentary: Debunking 'Climate Change Hiatus' of 2000s

News article Commentary: Debunking 'Climate Change Hiatus' of 2000s (Published December 26, 2018)
Source: KQED Radio
Climate Change Topics: Greenhouse gas (GHG) increases / Temperature /
(Posted December 26, 2018)

 

A City Rose on the Marshes. Will the Bay Take it Back? (Foster City)

News article A City Rose on the Marshes. Will the Bay Take it Back? (Foster City) (Published December 19, 2018)
Source: And the West (Stanford University)
Climate Change Topics: California: Bay Area and Delta / Flooding / Sea level rise /
(Posted December 24, 2018)

 

Assessing California's Climate Policies -- An Overview

Report Assessing California's Climate Policies -- An Overview - "Chapter 135 of 2017 (AB 398, E. Garcia) requires our office to annually report on the economic impacts and benefits of California’s statutory greenhouse gas (GHG) emission goals—statewide emissions to 1990 levels by 2020 and to 40 percent below 1990 levels by 2030. This report provides a conceptual overview of the potential economic effects of policies intended to help meet these goals -- both positive and negative -- as well as identifies some key issues for the Legislature to consider when designing and evaluating state climate policies. In a companion report, Assessing California's Climate Policies -- Transportation, we provide more detailed information and comments on the state’s major policies aimed at reducing emissions from the transportation sector." (Published December 21, 2018)
Source: California. Legislative Analyst's Office
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted December 24, 2018)

 

Jerry Brown wanted to save the planet and the California budget. How did he do?

News article Jerry Brown wanted to save the planet and the California budget. How did he do? (Published December 19, 2018)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) reduction, mitigation /
(Posted December 19, 2018)

 

The Southwest May Be Deep Into a Climate-Changed Mega-Drought

News article The Southwest May Be Deep Into a Climate-Changed Mega-Drought (Published December 19, 2018)
Source: Atlantic
Climate Change Topics: Drought /
(Posted December 19, 2018)

 

Silicon Valley 2.0

Report Silicon Valley 2.0 - "Silicon Valley 2.0 supports the entire Santa Clara County with climate risk assessment, adaptation and resilience planning. Developed by the County of Santa Clara Office of Sustainability in collaboration with many partners. The project produced: Climate Adaptation Guidebook, provides key strategies identified for climate change preparedness; and, Web-based Climate Change Decision Support Tool, which allows users to run customized queries using regionally-specific data to model future climate change impacts and the resulting financial costs. Use The Climate Change Preparedness Decision Support Tool to: 1) Learn how the County's climate is expected to change over the next century; 2) Predict the impacts of climate change to the different County areas; 3) Understand which infrastructure assets are at risk by different climate-related impacts, and to what degree; 4) Assess the level of economic risk climate change poses to our infrastructure assets; and 5) View vulnerability and risk reports and export data to run additional analysis." (Published )
Source: Santa Clara County
Climate Change Topics: Adaptation / California: Bay Area and Delta / Flooding / Precipitation, Extreme Weather / Sea level rise / Temperature / Wildfires /
(Posted December 19, 2018)

 

SGMA Climate Change Resources

Report SGMA Climate Change Resources - "This dataset includes processed climate change datasets related to climatology, hydrology, and water operations. The climatological data provided are change factors for precipitation and reference evapotranspiration gridded over the entire State. The hydrological data provided are projected stream inflows for major streams in the Central Valley, and streamflow change factors for areas outside of the Central Valley and smaller ungaged watersheds within the Central Valley. The water operations data provided are Central Valley reservoir outflows, diversions, and State Water Project (SWP) and Central Valley Project (CVP) water deliveries and select streamflow data. Most of the Central Valley inflows and all of the water operations data were simulated using the CalSim II model and produced for all projections. . . . Data are provided for projected climate conditions centered around 2030 and 2070. The climate projections are provided for these two future climate periods, and include one scenario for 2030 and three scenarios for 2070: a 2030 central tendency, a 2070 central tendency, and two 2070 extreme scenarios (i.e., one drier with extreme warming and one wetter with moderate warming). The climate scenario development process represents a climate period analysis where historical interannual variability from January 1915 through December 2011 is preserved while the magnitude of events may be increased or decreased based on projected changes in precipitation and air temperature from general circulation models." (Published December 13, 2018)
Source: California. Dept. of Water Resources
Climate Change Topics: California: Statewide / Groundwater / Models and Tools / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted December 19, 2018)

 

Sierra Nevada snowpack on track to shrink up to 79% by the end of the century, new study finds

News article Sierra Nevada snowpack on track to shrink up to 79% by the end of the century, new study finds (Published December 17, 2018)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted December 17, 2018)

 

Water shortages ahead? Sierra Nevada snow pack on track to shrink 79 percent, new study finds

News article Water shortages ahead? Sierra Nevada snow pack on track to shrink 79 percent, new study finds
Related Link: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL080308
(Published December 15, 2018)
Source: San Jose Mercury News
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted December 17, 2018)

 

Carbon sequestration in riparian forests: A global synthesis and meta-analysis

Report Carbon sequestration in riparian forests: A global synthesis and meta-analysis - "Restoration of deforested and degraded landscapes is a globally recognized strategy to sequester carbon, improve ecological integrity, conserve biodiversity, and provide additional benefits to human health and well-being. Investment in riparian forest restoration has received relatively little attention, in part due to their relatively small spatial extent. Yet, riparian forest restoration may be a particularly valuable strategy because riparian forests have the potential for rapid carbon sequestration, are hotspots of biodiversity, and provide numerous valuable ecosystem services. To inform this strategy, we conducted a global synthesis and meta-analysis to identify general patterns of carbon stock accumulation in riparian forests. We compiled riparian biomass and soil carbon stock data from 117 publications, reports, and unpublished data sets. We then modeled the change in carbon stock as a function of vegetation age, considering effects of climate and whether or not the riparian forest had been actively planted. On average, our models predicted that the establishment of riparian forest will more than triple the baseline, unforested soil carbon stock, and that riparian forests hold on average 68–158 Mg C/ha in biomass at maturity, with the highest values in relatively warm and wet climates. We also found that actively planting riparian forest substantially jump-starts the biomass carbon accumulation, with initial growth rates more than double those of naturally regenerating riparian forest. Our results demonstrate that carbon sequestration should be considered a strong co-benefit of riparian restoration, and that increasing the pace and scale of riparian forest restoration may be a valuable investment providing both immediate carbon sequestration value and long-term ecosystem service returns." (Dybala, K. E., et al., 2018, Global Change Biology) (Published November 8, 2018)
Climate Change Topics: Ecosystems, Habitat, Threatened Species / Greenhouse gas (GHG) reduction, mitigation /
(Posted December 17, 2018)

 

Climate change will bring more strong El Niños. Here's what that means for California

News article Climate change will bring more strong El Niños. Here's what that means for California (Published December 13, 2018)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Precipitation, Extreme Weather /
(Posted December 13, 2018)

 

Declining snowpack over Western US mapped at a finer scale

News article Declining snowpack over Western US mapped at a finer scale
Related Link: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018GL079621
(Published December 12, 2018)
Source: Science Daily
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted December 12, 2018)

 

State Water Board Updates Policy to Encourage Recycled Water Use as Resource to Address Effects of Climate Change

News article State Water Board Updates Policy to Encourage Recycled Water Use as Resource to Address Effects of Climate Change (Published December 11, 2018)
Source: California State Water Resources Control Board
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack / Water utilities guidance /
(Posted December 12, 2018)

 

Snowpack Change From 1982 to 2016 Over Conterminous United States

Report Snowpack Change From 1982 to 2016 Over Conterminous United States - "Snow water equivalent (SWE) variability and its drivers over different regions remain uncertain due to lack of representativeness of point measurements and deficiencies of existing coarse-resolution SWE products. Here, for the first time, we quantify and understand the snowpack change from 1982 to 2016 over conterminous United States at 4-km pixels. Annual maximum SWE decreased significantly (p < 0.05) by 41% on average for 13% of snowy pixels over western United States. Snow season was shortened significantly by 34 days on average for 9% of snowy pixels over the United States, primarily caused by earlier ending and later arrival of the season over western and eastern United States, respectively. October–March mean temperature and accumulated precipitation largely explain the temporal variability of 1 April SWE over western United States, and considering temperature alone would exaggerate the warming effect on SWE decrease. In contrast, temperature plays the primary role in the 1 April SWE variability over eastern United States." (Zeng, X., et al., 2018, Geophysical Research Letters) (Published December 12, 2018)
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted December 12, 2018)

 

Climate change was behind 15 weather disasters in 2017

News article Climate change was behind 15 weather disasters in 2017
Related Link: https://www.ametsoc.org/ams/index.cfm/publications/bulletin-of-the-american-meteorological-society-bams/explaining-extreme-events-from-a-climate-perspective/
(Published December 11, 2018)
Source: Washington Post
Climate Change Topics: Agriculture / Drought / Temperature / Wildfires /
(Posted December 11, 2018)

 

Adapting to an Uncertain Water Future

News article Adapting to an Uncertain Water Future (Published December 10, 2018)
Source: Public Policy Institute of California
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted December 11, 2018)

 

Sierra snowpack could drop significantly by end of century

News article Sierra snowpack could drop significantly by end of century
Related Link: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL080308
(Published December 11, 2018)
Source: Science Daily
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted December 11, 2018)

 

Explaining Extreme Events from a Climate Perspective

Report Explaining Extreme Events from a Climate Perspective - Annual special report from the Bulletin of the American Meteorological Society that "presents assessments of how human-caused climate change may have affected the strength and likelihood of individual extreme events." (Published December 10, 2018)
Climate Change Topics: Drought / Precipitation, Extreme Weather / Sea level rise / Temperature / Water supply, changes in supply, snowpack / Wildfires /
(Posted December 11, 2018)

 

The Changing Character of the California Sierra Nevada as a Natural Reservoir

Report The Changing Character of the California Sierra Nevada as a Natural Reservoir - "The mountains of the Western United States provide a vital natural service through the storage and release of mountain snowpack, lessening impacts of seasonal aridity and satiating summer water demand. However, climate change continues to undermine these important processes. To understand how snowpack may change in the headwaters of California's major reservoirs, the North American Coordinated Regional Climate Downscaling Experiment is analyzed to assess peak water volume, peak timing, accumulation rate, melt rate, and snow season length across both latitudinal and elevational gradients. Under a high-emissions scenario, end-of-century peak snowpack timing occurs 4 weeks earlier and peak water volume is 79.3% lower. The largest reductions are above Shasta, Oroville, and Folsom and between 0- and 2,000-m elevations. Regional climate model and global forcing data set choice is important in determining historical snowpack character, yet by end century all models show a significant and similar decline in mountain snowpack." (Rhoades, A. M., et al., 2018, Geophysical Research Letters) (Published November 20, 2018)
Source: Lawrence Berkeley National Laboratory
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted December 11, 2018)

 

Climate Adaptation Finance and Investment in California

Report Climate Adaptation Finance and Investment in California - "This book serves as a guide for local governments and private enterprises as they navigate the [uncharted] waters of investing in climate change adaptation and resilience. This book serves not only as a resource guide for identifying potential funding sources but also as a roadmap for asset management and public finance processes. It highlights practical synergies between funding mechanisms, as well as the conflicts that may arise between varying interests and strategies. While the main focus of this work is on the State of California, this book offers broader insights for how states, local governments and private enterprises can take those critical first steps in investing in society's collective adaptation to climate change." By Jesse M. Keenan (Published October 26, 2018)
Climate Change Topics: California: Statewide / Funding, Financing, and Grants / Adaptation /
(Posted December 11, 2018)

 

How does climate change impact water?

News article How does climate change impact water? (Published December 9, 2018)
Source: Santa Cruz Sentinel
Climate Change Topics: California: Statewide / California: Water/Flood Protection Districts / Drought / Precipitation, Extreme Weather / Water supply, changes in supply, snowpack /
(Posted December 10, 2018)

 

Calif. prepares 'retreat' policy for beach homes

News article Calif. prepares 'retreat' policy for beach homes (Published December 7, 2018)
Source: E&E Publishing LLC
Climate Change Topics: Adaptation / California: Statewide / Sea level rise /
(Posted December 7, 2018)

 

How Santa Clara Valley Water District is preparing for flood season: Climate change is increasing the chances of extreme weather events (Opinion by Board chair Richard Santos)

News article How Santa Clara Valley Water District is preparing for flood season: Climate change is increasing the chances of extreme weather events (Opinion by Board chair Richard Santos) (Published December 6, 2018)
Source: Cupertino Courier
Climate Change Topics: California: Bay Area and Delta / California: Water/Flood Protection Districts / Flooding / Precipitation, Extreme Weather / Santa Clara Valley Water District /
(Posted December 6, 2018)

 

El Paso to drink treated sewage water due to climate change drought

News article El Paso to drink treated sewage water due to climate change drought (Published December 1, 2018)
Source: CNN
Climate Change Topics: Drought / Water supply, changes in supply, snowpack /
(Posted December 3, 2018)

 

Five myths about climate change (Opinion)

News article Five myths about climate change (Opinion) (Published December 1, 2018)
Source: Washington Post
Climate Change Topics: Global issues, human impacts / Politics, laws, United Nations, etc. / Skepticism / Temperature /
(Posted December 3, 2018)

 

Climate change is more extensive and worse than once thought

News article Climate change is more extensive and worse than once thought (Published November 29, 2018)
Source: Associated Press
Climate Change Topics: Drought / Global issues, human impacts / Precipitation, Extreme Weather / Sea and Polar ice / Sea level rise / Wildfires /
(Posted November 30, 2018)

 

As Trump dismisses climate change report, California plans to use it against him

News article As Trump dismisses climate change report, California plans to use it against him (Published November 29, 2018)
Source: McClatchy News
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) reduction, mitigation / Politics, laws, United Nations, etc. /
(Posted November 29, 2018)

 

Rising sea levels could cost the U.S. trillions

News article Rising sea levels could cost the U.S. trillions (Published November 29, 2018)
Source: Axios
Climate Change Topics: Flooding / Sea level rise /
(Posted November 29, 2018)

 

How Newsom can use water management to confront climate change (Opinion)

News article How Newsom can use water management to confront climate change (Opinion) (Published November 27, 2018)
Source: CALMatters
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted November 28, 2018)

 

The landscape of the U.S. could be part of its climate solution

News article The landscape of the U.S. could be part of its climate solution
Related Link: http://advances.sciencemag.org/content/4/11/eaat1869
(Published November 20, 2018)
Source: Los Angeles Times
Climate Change Topics: Greenhouse gas (GHG) reduction, mitigation /
(Posted November 27, 2018)

 

California regions 'moving in the wrong direction' to meet climate goals, agency finds

News article California regions 'moving in the wrong direction' to meet climate goals, agency finds (Published November 27, 2018)
Source: Sacramento Bee
Climate Change Topics: California: Statewide / Greenhouse gas (GHG) increases /
(Posted November 27, 2018)

 

Five Big Ways the United States Will Need to Adapt to Climate Change

News article Five Big Ways the United States Will Need to Adapt to Climate Change (Published November 27, 2018)
Source: New York Times
Climate Change Topics: Adaptation / Agriculture / Sea level rise / Water supply, changes in supply, snowpack /
(Posted November 27, 2018)

 

New federal report on climate change paints bleak picture for economy and environment

News article New federal report on climate change paints bleak picture for economy and environment
Related Link: https://nca2018.globalchange.gov/
(Published November 24, 2018)
Source: San Francisco Chronicle
Climate Change Topics: Federal Regulations, EPA, Clean Air Act / Global issues, human impacts /
(Posted November 26, 2018)

 

EPA: 'It's not a happy place'

News article EPA: 'It's not a happy place' (Published November 21, 2018)
Source: E&E Publishing LLC
Climate Change Topics: Federal Regulations, EPA, Clean Air Act / Politics, laws, United Nations, etc. /
(Posted November 26, 2018)

 

L.A. wasn't built in the desert, but the desert may be coming to us (Editorial)

News article L.A. wasn't built in the desert, but the desert may be coming to us (Editorial) (Published November 24, 2018)
Source: Los Angeles Times
Climate Change Topics: California: Statewide / Water supply, changes in supply, snowpack /
(Posted November 26, 2018)

 

Climate change leading to higher tides in California. That means 'nuisance flooding' (Column)

News article Climate change leading to higher tides in California. That means 'nuisance flooding' (Column) (Published November 25, 2018)
Source: San Luis Obispo Tribune
Climate Change Topics: California: Statewide / Flooding / Sea level rise /
(Posted November 26, 2018)

 

Ominous US climate report offers few policy solutions

News article Ominous US climate report offers few policy solutions (Published November 26, 2018)
Source: Bloomberg News
Climate Change Topics: Adaptation / Global issues, human impacts /
(Posted November 26, 2018)

 

Federal Report: Climate Change Already Hurting U.S. Communities

News article Federal Report: Climate Change Already Hurting U.S. Communities (Published November 24, 2018)
Source: National Public Radio (NPR)
Climate Change Topics: Federal Regulations, EPA, Clean Air Act / Global issues, human impacts /
(Posted November 26, 2018)

 

Comprehensive Government Climate Report Warns That Warming Planet Threatens U.S. Water Security

News article Comprehensive Government Climate Report Warns That Warming Planet Threatens U.S. Water Security (Published November 23, 2018)
Source: Circle of Blue
Climate Change Topics: Water supply, changes in supply, snowpack /
(Posted November 26, 2018)

 

What is the Fourth National Climate Assessment?

News article What is the Fourth National Climate Assessment? (Published November 23, 2018)
Source: Union of Concerned Scientists
Climate Change Topics: Adaptation / Federal Regulations, EPA, Clean Air Act / Global issues, human impacts /
(Posted November 26, 2018)

 

Climate change will harm the entire nation if the U.S. doesn't act now, federal report warns

News article Climate change will harm the entire nation if the U.S. doesn't act now, federal report warns (Published November 24, 2018)
Source: Los Angeles Times
Climate Change Topics: Adaptation / Federal Regulations, EPA, Clean Air Act / Global issues, human impacts / Greenhouse gas (GHG) reduction, mitigation /
(Posted November 26, 2018)

 

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