News, Science

Unexpected Surge in Atmospheric Methane

Summary A dramatic and surprising surge in atmospheric methane has emerged over the past several years. If not mitigated, this new trend could off-set the gains anticipated from the Paris Climate Agreement. In response, scientists have begun ringing alarm bells …
Heartland
Science

NCA4: American Heartland Fact Sheet

The National Climate Assessment finds that global warming is impacting every state in the country, and those in America’s Heartland are no different. The Midwest and Great Plains are seeing hotter temperatures, more intense downpours, flooding, crop damages and other …
Climate Assessment
News, Science

4th U.S. National Climate Assessment Vol.II: Main Messages

Trump Administration Climate Report: It’s Real, It’s Here, It’s Because of Fossil Fuels. And The Sooner We Fix It, The Better. The National Climate Assessment (NCA) is a congressionally-mandated report released at least every four years on what the past, …
Infographics
Science

Infographics: NCA4 Vol. II

Infographics and videos below are available for download and re-publication. The National Climate Assessment (NCA) is a congressionally-mandated report on what the past, present and future of climate change means for the United States. It was produced by 13 federal …
Eastern
Science

NCA4: Eastern U.S. Fact Sheet

Eastern United States: A Prime Example Of Growing Flood Risk from Climate Change As the atmosphere warms, its ability to hold moisture grows. This leads to heavier downpours and more flooding. This has already been shown across the Eastern US, …
Western
Science

NCA4: Western U.S. Fact Sheet

Climate Change Already Worsening Weather in the West The western United States has warmed nearly 2°F since 1900, and with that has come increased fires, drought and disease. The wildfire season has grown, as reduced snowpack further makes fires more …
National Climate Assessment
Science

4th U.S. National Climate Assessment Vol. II: Notable Findings

NCA4, Part Two: Impacts, Risks and Adaptation How Climate Change is harming humanity, shaping societies and endangering environments The Trump Administration’s recently published 4th National Climate Assessment Volume II, on climate impacts, risks and adaptation covers 19 national topics and …

Hurricanes
Extreme Weather, Science

Infographics: Climate Change and Hurricanes

Infographics and videos below are available for download and re-publication. Please credit Climate Signals. Human‐caused climate change is supercharging hurricanes and exacerbating the risk of major damage in three primary ways. Sea level rise elevates and extends the reach of coastal …
National
Science

4th U.S. National Climate Assessment: What Is It?

Background The U.S. National Climate Assessment is a regular science report by 13 federal agencies, mandated by Congress to inform the nation and our government about climate change. The Fourth National Climate Assessment (NCA4), Volume II documents how climate change …