Access a range of climate-related reports issued by government agencies and scientific organizations. Browse the reports listed below, or filter by scope, content, or focus in the boxes above. To expand your results, click the Clear Filters link.

Report cover
Published
September 2019

This report focuses on making the case for climate adaptation, providing specific insights and recommendations in key sectors: food security, the natural environment, water, cities and urban areas, infrastructure, disaster risk management, and finance. It is designed to inspire action among decision makers, including heads of state and government officials, mayors, business executives, investors, and community leaders.

screenshot of report site
Published
September 2019

This report and the accompanying community spotlights provide an overview of climate change science, reasons why action is needed, how science supports decision making and planning, ways to adapt to climate change and limit the severity of its effects, and how such efforts can help build resiliency. The report illustrates the ways in which science can help individuals, communities, businesses, and government agencies make informed decisions. By working together to identify solutions and bring about positive change, we can reduce the risks faced by current and future generations.

Report cover
Published
May 2019

This Tribal Adaptation Menu is designed to align with the Adaptation Workbook and adaptation menus published in Forest Adaptation Resources: Climate Change Tools and Approaches for Land Managers. This frequently used resource is also known as the NIACS (Northern Institute of Applied Climate Science) Adaptation Workbook. The goal of the Tribal Adaptation Menu is to provide a resource for incorporating tribal and traditional values into the existing NIACS Adaptation Workbook as well as other climate adaptation planning processes. The resource fills a gap in that traditional and indigenous knowledge and perspectives weren’t being recognized in climate adaptation resources.

Published
May 2019

The Central Council of the Tlingit and Haida Indian Tribes of Alaska (Tlingit & Haida) is a federally recognized Indian Tribe that serves 20 villages and communities stretching over 43,000 square miles within the Alaska Panhandle. The Tlingit and Haida membership is among the largest, most isolated, and most geographically dispersed of Native or Tribal populations nationwide. The region encompasses a 525-mile strip of coastline and interior waterways, bordered by Canada on the north, south, and east, with the Gulf of Alaska on the west.

The Central Council recognizes that wild salmon, berries, clams, herring, halibut, yellow cedar and other species important for subsistence, cash and culture are at risk. In response, they have released a 53-page climate change adaptation plan. The document is a roadmap for prioritizing, monitoring, and responding to threats stemming from warming air and ocean temperatures, caused by increasing levels of greenhouse gases trapped in the atmosphere.

Report Cover
Published
April 2019

The Beloved Community is a vision for our future where all people share equally in the wealth and bounty of the earth, where we protect its abundance, diversity, and beauty for future generations. In this vision of liberation, racism, exploitation, and domination are replaced by democracy, cooperation, interdependence, and love. To get there, we pursue transformative, systems-change solutions. What do we mean by this? The root causes of the problems our communities face—like climate change, racism, and economic inequality—are all deeply connected. Since the problems are connected, so are the solutions. The purpose of this toolkit is to put us on the path toward achieving this vision. Through the context of building equity and resilience into climate adaptation planning, we introduce strategies to transform our communities and, by extension, society. Our ultimate goal is to create lasting and systemic change. At the same time, we recognize the urgency of the issues our communities face and the need to take action now. That is why we pursue change at every scale—from policy changes to community-based projects—to institute the transformative change we need to uphold our vision of the beloved community.

Report cover
Published
April 2019

This report is the first major product of the current Canadian national assessment, which launched in 2017 and intends to publish a series of authoritative reports between 2018 and 2021. This assessment focuses on answering the questions: how has Canada’s climate changed to date, why, and what changes are projected for the future? This initial report provides a climate science foundation for the other national assessment products. Its objectives are to assess current knowledge about how Canada’s climate is changing and why, and what changes are projected for the future, to help inform mitigation and adaptation decision making and to help raise public awareness and understanding of Canada’s changing climate. The CCCR is written for a broad range of professionals who are familiar with the topic of climate change but who may not have expertise in the physical sciences. 

Report Cover
Published
March 2019

Climate change is causing significant and far-reaching impacts on the Great Lakes and the Great Lakes region. This report, from 18 leading scientists and experts from Midwest and Canadian universities and research institutions, draws on the array of existing research to assess how the shifting global climate impacts the unique Great Lakes region.

Cover of report with tree and people
Published
March 2019

The frequency and severity of disasters over the last few decades have presented unprecedented challenges for communities across the United States. This report 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 to address gaps identified in current community resilience measurement efforts. The report also provides recommendations to the Gulf Research Program to build and measure resilience in the Gulf of Mexico region.

Cover of Fourth National Climate Assessment Volume II report
Published
November 2018

The Global Change Research Act of 1990 mandates that the U.S. Global Change Research Program deliver a report to Congress and the President no less than every four years that “1) integrates, evaluates, and interprets the findings of the Program…; 2) analyzes the effects of global change on the natural environment, agriculture, energy production and use, land and water resources, transportation, human health and welfare, human social systems, and biological diversity; and 3) analyzes current trends in global change, both human-induced and natural, and projects major trends for the subsequent 25 to 100 years.” The Fourth National Climate Assessment (NCA4) fulfills that mandate in two volumes. This report, Volume II, draws on the foundational science described in Volume I, the Climate Science Special Report. Volume II focuses on the human welfare, societal, and environmental elements of climate change and variability for 10 regions and 18 national topics, with particular attention paid to observed and projected risks, impacts, consideration of risk reduction, and implications under different mitigation pathways. Where possible, NCA4 Volume II provides examples of actions underway in communities across the United States to reduce the risks associated with climate change, increase resilience, and improve livelihoods. This assessment was written to help inform decision makers, utility and natural resource managers, public health officials, emergency planners, and other stakeholders by providing a thorough examination of the effects of climate change on the United States.

Cover of report
Published
October 2018

This special report from the Intergovernmental Panel on Climate change describes the impacts of global warming of 1.5 °C above pre-industrial levels. The report also describes potential global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty.

screenshot of report cover
Published
January 2018

During late 2016, the National Integrated Drought Information System, the National Drought Mitigation Center, the Midwestern Regional Climate Center, and other regional partners convened four stakeholder meetings in the Midwest Drought Early Warning System. Each of these meetings included a historical drought overview and climate outlook for the region, discussion of critical drought-related needs and challenges, exploration of available tools, local drought planning and management approaches, and strategy development to improve drought early warning and resiliency in the Midwest.

screenshot of report cover
Published
November 2017

As a key part of the Fourth National Climate Assessment (NCA4), the U.S. Global Change Research Program (USGCRP) oversaw the production of this stand-alone report of the state of science relating to climate change and its physical impacts. The Climate Science Special Report (CSSR) is designed to be an authoritative assessment of the science of climate change, with a focus on the United States, to serve as the foundation for efforts to assess climate-related risks and inform decision making about responses. 

As Volume 1 of NCA4, CSSR serves several purposes, including providing (1) an updated and detailed analysis of the findings of how climate change is affecting weather and climate across the United States; (2) an executive summary and 15 chapters that provide the basis for the discussion of climate science found in the second volume of NCA4; and (3) foundational information and projections for climate change, including extremes, to improve “end-to-end” consistency in sectoral, regional, and resilience analyses within the second volume. CSSR integrates and evaluates the findings on climate science and discusses the uncertainties associated with these findings. It analyzes current trends in climate change, both human-induced and natural, and projects major trends to the end of this century. As an assessment and analysis of the science, CSSR provides important input to the development of other parts of NCA4, and their primary focus on the human welfare, societal, economic and environmental elements of climate change. Much of the underlying report is written at a level more appropriate for a scientific audience, though the Executive Summary is intended to be accessible to a broader audience. 

Report cover
Published
May 2017

This Technical Report presents results from a large set of sectoral impact models that quantify and monetize climate change impacts in the U.S., with a primary focus on the contiguous U.S., under moderate and severe future climates. The report summarizes and communicates the results of the second phase of quantitative sectoral impacts analysis under the Climate Change Impacts and Risk Analysis (CIRA) project. The effort is intended to inform the fourth National Climate Assessment (NCA4) of the U.S. Global Change Research Program (USGCRP). The goal of this work is to estimate climate change impacts and economic damages to multiple U.S. sectors (e.g., human health, infrastructure, and water resources) under different scenarios. Though this report does not make policy recommendations, it is designed to inform strategies to enhance resiliency and protect human health, investments, and livelihoods.

Report Cover
Published
March 2017

This guidebook results from the culmination of a year of dialogue among diverse stakeholders in southeastern Connecticut who defined challenges and solutions from extreme weather, climate change, and shifting social and economic conditions. Participants included representatives from nine municipalities, public and private utilities, public health departments, chambers of commerce, major employers, conservation organizations, academic institutions, community non-profits, and state agencies, among others. The dialogue captured six themed planning sectors (water, food, ecosystem services, transportation, energy, and regional economy) in a process that used surface and integrated solutions to address singular and multiple challenges across planning sectors. The guidebook provides a quick reference resource to help shape and inform actions that will advance a regional resilience framework for southeastern Connecticut; an accompanying Summary of Findings captures the project's final outcomes and conclusions, as well as providing a comprehensive account of the objectives, process, and details. 

Report cover
Published
November 2016

This report documents that the average temperature in 2015 was over one degree higher than pre-industrial times and that the period 2011–2015 was the warmest five-year period on record, consistent with established warming trends. The report further documents that in 2015 another milestone was reached, with globally averaged CO2 levels of 400 parts per million (ppm). The year 2016 is on track to be even warmer and will be the first year in which CO2 at the Mauna Loa Observatory remains above 400 ppm all year, and for many generations to come.

The probability of extreme climate events since 2011, especially those involving extreme high temperatures, has been substantially increased by climate change, often by a factor of 10 or more. The single most significant event in humanitarian terms, with over 250,000 lives lost, was the 2011–2012 famine in the Horn of Africa, where drought was a major factor.

Report Cover
Published
August 2016

This report features observed trend data on 37 climate indicators, including U.S and global temperatures, ocean acidity, sea level, river flooding, droughts, and wildfires. It documents rising temperatures, shifting patterns of snow and rainfall, and increasing numbers of extreme climate events, such as heavy rainstorms and record high temperatures. Many of these observed changes are linked to the rising levels of carbon dioxide and other greenhouse gases in our atmosphere, caused by human activities.

First page of the memorandum
Published
August 2016

This document provides final guidance for federal agencies on how to consider the impacts of their actions on global climate change in their National Environmental Policy Act (NEPA) reviews, providing a framework for agencies to consider both the effects of a proposed action on climate change, as indicated by its estimated greenhouse gas emissions, and the effects of climate change on a proposed action. The memorandum applies to all types of proposed federal agency actions that are subject to NEPA analysis and guides agencies on how to address the greenhouse gas emissions from federal actions and the effects of climate change on their proposed actions within the existing NEPA regulatory framework.

Cover of the Long-Term Drought Resilience Federal Action Plan
Published
March 2016

President Obama issued this Memorandum and Action Plan on building long-term drought resilience under his Climate Action Plan. The document elucidates the role of the National Drought Resilience Partnership, a team of federal agencies, in helping communities manage the impact of drought by linking information—such as forecasts and early warnings—with drought preparedness strategies in critical sectors like agriculture, municipal water systems, tourism, and transportation.

Cover of the report
Published
February 2015

This report builds on Maine’s earlier report from 2009—it is not intended as a comprehensive revision of all aspects of the original report. This update focuses on highlights of the understanding in 2015 of past, present, and future trends in key indicators of a changing climate specific to Maine, and recent examples of how Maine people are experiencing these changes. 

Cover of the Climate Change Research Plan for California
Published
February 2015

Successfully negotiating climate change challenges will require integrating a sound scientific basis for climate preparedness into local planning, resource management, infrastructure, and public health, as well as introducing new strategies to reduce greenhouse gas emissions or increase carbon sequestration into nearly every sector of California’s economy. This Research Plan presents a strategy for developing the requisite knowledge through a targeted body of policy-relevant, California-specific research over three to five years (from early 2014), and determines California’s most critical climate-related research gaps.

Cover of the Colorado Climate Change Vulnerability Study
Published
January 2015

Western Water Assessment, in collaboration with the University of Colorado Boulder and Colorado State University, conducted a broad study of climate vulnerability for the state of Colorado. Drawing from existing data and peer-reviewed research, the study summarizes the key challenges facing seven sectors: ecosystems, water, agriculture, energy, transportation, outdoor recreation and tourism, and public health.

Report cover
Published
December 2014

In support of the Eugene-Springfield Multi-Jurisdictional Natural Hazards Mitigation Plan, staff from the cities of Eugene and Springfield, Oregon, with support from the Oregon Partnership for Disaster Resilience, convened meetings in 2014 with representatives from the following sectors: drinking water, health care and public education, electricity, transportation, food, housing, communication, stormwater, wastewater, natural systems, and public safety. The team met for six hours with each sector and, working from a standard list of questions, collected information about the adaptive capacity and sensitivity to specific hazards. This report includes sector summaries resulting from these interviews that reflect the conversations and thinking of the participants. 

Cover of Volume 1, California Water Plan Update 2013
Published
October 2014

A five-year effort by the California Department of Water Resources, this report presents the status and trends of California's water-dependent natural resources, water supplies, and agricultural, urban, and environmental water demands for a range of plausible future scenarios. Update 2013, as it is known, is designed to work in tandem and help implement the Governor’s Water Action Plan. At more than 3,500 pages, Update 2013 covers a variety of information, from detailed descriptions of current and potential regional and statewide water conditions to a “Roadmap For Action” intended to achieve desired benefits and outcomes. 

Cover of the Safeguarding California report
Published
July 2014

This plan—an update to the 2009 California Climate Adaptation Strategy—augments previously identified strategies in light of advances in climate science and risk management options.

Cover of the State of the Climate in 2013 report
Published
July 2014

A 24-year tradition encompassing the work of 425 authors from 57 countries, 2013's State of the Climate report uses dozens of climate indicators to track patterns, changes, and trends of the global climate system.

report cover
Published
May 2014

The National Climate Assessment assesses the science of climate change and its impacts across the United States, now and throughout this century. It documents climate change-related impacts and responses for various sectors and regions, with the goal of better informing public and private decision making at all levels.

The assessment draws from a large body of scientific peer-reviewed research, technical input reports, and other publicly available sources; all sources meet the standards of the Information Quality Act. The report was extensively reviewed by the public and experts, including a panel of the National Academy of Sciences, the 13 federal agencies of the U.S. Global Change Research Program, and the Federal Committee on Environment, Natural Resources, and Sustainability.

Cover of the Mapping the River Ahead report
Published
March 2014

As the climate changes, critical challenges face water managers, farmers, public agencies, and conservationists in the Colorado River Basin. This report by Carpe Diem West, in partnership with the Center for Natural Resources and Environmental Policy at the University of Montana, documents the concerns of some Colorado River thought leaders and their ideas about potential solutions and paths ahead.

Cover of Climate Change 2014: Impacts, Adaptation, and Vulnerability
Published
March 2014

The Intergovernmental Panel on Climate Change (IPCC) Working Group II's contribution to the Fifth Assessment Report (AR5) relates to climate impacts, adaptation, and vulnerability. A Summary for Policymakers and the underlying scientific and technical assessment are also available.

Report cover, depicting a skyline of the City of Grand Rapids
Published
December 2013

This report, the first of its kind for the City of Grand Rapids, outlines the condition of the city's climate resiliency and offers recommendations for how it can both impact and adapt to climate change. The report's goal is to both spur a larger community conversation around processes that will enable Grand Rapids to become a more climate-resilient city and to spur many specific short- and near-term projects, policies, programs, and plans to mitigate the effects of climate change. The report documents projected local climate changes, their potential negative impact to low-income families, and outlines small near-term solutions that the city can make to curb or adapt to climate change. Recommendations include investing in green space and improving the city's tree canopy, improving the city's energy autonomy, and implementing green street infrastructure materials and maintenance techniques.

Report cover
Published
October 2013

In 2013, the Baltimore City Department of Planning and Office of Sustainability created the Disaster Preparedness and Planning Project (DP3) as an effort to address existing hazards while simultaneously preparing for predicted hazards due to climate change. This project develops an integrated All Hazards Mitigation Plan, floodplain mapping, and Climate Adaptation Plan program that links research, outreach, and actions to assure implementation of a comprehensive and new risk-preparedness system for addressing existing and future impacts. Integrating hazard mitigation planning, which focuses on past events, with climate adaptation planning, which focuses on what will likely happen in the future, offers a positive, win-win solution for Baltimore City.

Report cover, depicting a map of Madison's heat island
Published
October 2013

The Dane County Climate Change Action Council was formed in March 2013 with a mission to ensure that Dane County government was better prepared for weather extremes brought on by global climate change. The Council facilitated an internal review of county preparations and potential modifications to the operations and capital investments of the county, resulting in this report identifying Dane County’s potential vulnerabilities to weather extremes associated with global climate change and strategies to adapt to a changing climate. The report is the first step in the county’s effort to improve the resiliency of its climate-sensitive resources in the face of climate change; future steps will include cross-departmental collaborations to implement the adaptation strategies outlined in the report.

Cover of The Delta Plan
Published
September 2013

The Sacramento-San Joaquin River Delta is the grand confluence of California’s waters, the place where the state’s largest rivers merge in a web of channels—and in a maze of controversy. In 2009, seeking an end to decades of conflict over water, the California Legislature established the Delta Stewardship Council with a mandate to resolve long-standing issues. The first step toward that resolution is the Delta Plan—a comprehensive management plan for California’s Sacramento-San Joaquin Delta, developed to guide state and local agencies to help achieve the co-equal goals of providing a more reliable water supply for California and protecting, restoring, and enhancing the delta's ecosystem.

Cover of the Colorado Drought Mitigation and Response Plan
Published
August 2013

This plan was developed to provide an effective and systematic means for the State of Colorado to reduce the impacts of water shortages over the short and long term.

The cover of the President's Climate Action Plan
Published
June 2013

President Obama's Climate Action Plan includes a series of executive actions to reduce carbon pollution, prepare the United States for the impacts of climate change, and lead international efforts to address global climate change.

Cover of the Southwest Assessment report
Published
May 2013

A contribution to the 2013 National Climate Assessment, this report is a summary and synthesis of the past, present, and projected future of the Southwest region’s climate. It emphasizes new information and understandings since publication of the previous national assessment in 2009.

Cover of the Strategic Climate Action Plan for King County, Washington
Published
December 2012

Preparation of the Strategic Climate Action Plan is an opportunity to take stock of progress related to climate change, to look forward, and to plan for the future.

Pages