Since 1989, the U.S. Global Change Research Program (USGCRP) has submitted annual reports to Congress called Our Changing Planet. The reports describe the status of USGCRP research activities, provide progress updates, and document recent accomplishments
In particular, Our Changing Planet highlights progress and accomplishments in interagency activities. These highlights represent the broad spectrum of USGCRP activities that extend from Earth system observations, modeling, and fundamental research through synthesis and assessment, decision support, education, and public engagement. Highlights describe the state of science at the time of publication of each yearly report, and may not reflect more recent advances in understanding. The date of publication of the source report is noted on each highlight page.
USGCRP’s Social Sciences Coordinating Committee (SSCC) fosters integration of the methods, findings, and disciplinary perspectives of the social, behavioral, and economic sciences and interdisciplinary and transdisciplinary approaches into USGCRP activities in support of the Program’s goals.
In Fall 2021, the SSCC hosted a three-part public webinar series on food, culture, and climate, with the...
. In 2012, Hurricane Sandy hit the East Coast of the United States, creating widespread coastal flooding and over $60 billion in economic damages. A recent modeling study funded by NASA, NOAA, and NSF, with contributions from DOE and the USGS, found that the impacts of Hurricane Sandy were significantly worsened by sea level rise attributable to climate change (Strauss et al., 2021). Researchers simulated water levels and damages both as they occurred and as they would have occurred across a range of lower sea levels, showing...
Atmospheric rivers are long, narrow regions in the atmosphere that move moist air from the tropics to higher latitudes, producing heavy rain and snow upon landfall. They provide much of the rainfall in the western United States and are frequently associated with extreme weather across large parts of the country. The international Atmospheric River Tracking Method Intercomparison Project (ARTMIP) is seeking to improve understanding of the linkages between climate change and atmospheric rivers. ARTMIP...
Since 2015, USGCRP’s IGIM has convened an annual U.S. Climate Modeling Summit. The Summit brings together representatives from the U.S. CMIP-class climate model development centers and from operational climate prediction programs, with the goal of improving the coordination and communication of national climate modeling goals. Alongside many of the summits, a technical workshop focused on a high-priority modeling topic facing the U.S. and international modeling...
In September 2021, NASA conducted the TRACER–AQ field campaign in the Houston metropolitan area to measure air quality, ozone, and meteorological factors that influence air pollution in the region. This effort was conducted in partnership with the DOE-led TRACER campaign, the Texas Commission on Environmental Quality, and several academic institutions, as part of a set of interagency field activities in the...
Collaborative studies among scientists and decision-makers are identifying strategies to meet current and future water demands.
The western United States faces growing water challenges. Drought, population change, aging infrastructure, and ecosystem needs all strain existing water and power infrastructure, and future climate change is expected to further...
Collaboration across modeling, observational, and process research communities aims to improve how models represent and predict precipitation.
Many extreme events and related impacts are associated with the intensity, duration, and frequency of precipitation, including drought, flooding, wildfire, and severe storms. Understanding when, where, and how much precipitation will fall can help decision-makers and planners in agriculture, emergency management, energy, and other sectors prepare for and reduce costs from potential impacts. While models are skilled at simulating...
A reconstruction of daily weather back to 1806 puts current climate trends into historical perspective.
Historical weather reconstructions, or reanalyses, combine weather model output and observations from many sources to estimate the state of the atmosphere at a particular instant in time, over the entire globe. Reanalyses provide the context for understanding how weather and climate events and trends are changing over time and support improved prediction of future changes.
An interagency partnership between NOAA and DOE supported an...
Experimental warming of a peatland ecosystem showed a rapid shift towards net carbon loss to the atmosphere.
Peatlands cover only about 3 percent of Earth’s land surface but store around 30 percent of global soil carbon. As the climate warms, these carbon stocks are vulnerable to release into the atmosphere as the greenhouse gases carbon dioxide and methane, contributing to a cycle of further warming and carbon release. The SPRUCE (Spruce and Peatland Responses Under Changing Environments...
The Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) project concluded a yearlong expedition into the Arctic ice pack, collecting data that aims to advance understanding, modeling, and prediction of Arctic environmental change.
Sea ice cover in the Arctic Ocean has shrunk dramatically over the past four decades as temperatures in the region have warmed at over twice the rate as the rest of the globe. This trend is expected to continue, resulting in nearly sea-ice free late...