Since 1989, the U.S.
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.
Field research provides new data advancing our ability to project how tropical forests will respond to a changing climate.
Tropical forests store vast amounts of carbon and play a key role in regulating Earth’s climate. As climate changes, these ecosystems have the potential to become a net contributor to...
A new research network aims to accelerate discoveries in the science of these important natural carbon sources and sinks.
Coastal wetlands provide protection from wind and waves, support habitats and fisheries, and store large amounts of atmospheric carbon dioxide for centuries to millennia. These ecosystems can also be sources of greenhouse gas emissions to the atmosphere; wetlands that do not have the capacity to keep pace with sea-level rise, for example, can erode and release soil carbon rapidly to the atmosphere. Freshwater and brackish wetlands also emit methane, a...
An assessment of carbon stocks in Alaska’s soils and vegetation helped set a baseline for monitoring future change.
Alaska’s soils and vegetation store vast quantities of carbon. Increases in temperature throughout the 21st century may increasingly expose these stores to loss from increased wildfire,
Researchers are experimentally warming northern peatlands to understand carbon cycling in the climate of the future.
Northern peatlands hold large stocks of organic carbon in their soils that are vulnerable to release into the atmosphere as the...
Scientists are gaining new understanding of processes that control greenhouse gas emissions from Arctic
Rapid warming in the Arctic is causing carbon-rich soils known as permafrost, previously frozen for millennia, to thaw. As thawing soils decompose, the...
A global data collection network has built a strong foundation for
The ...
Vast quantities of carbon—twice the size of the current amount in the atmosphere—are stored in frozen
A key challenge for Earth System Models is accurately representing land surface and subsurface processes and their complex interactions in a warming climate. This is true for ecosystems across the globe, but particularly critical for Arctic ecosystems, which are projected to warm at a rate twice that of the global average by the end of the 21st century. The Next-Generation Ecosystem Experiments in the Arctic (NGEE-Arctic) project is addressing this challenge by integrating process studies,...
On February 11, 2016, workers in California ended the largest reported natural gas leak in U.S. history. The Aliso Canyon leak released methane and other gases into the atmosphere from an underground-storage facility for over three months, causing the evacuation of more than 5,000 households. Researchers from NOAA, NASA, Scientific Aviation, the University of California, the National Institute of Standards and Technology (NIST), the California Air Resources Board, and South Coast Air Quality Management District mobilized rapidly to assess the environmental impacts of the leak,...
The Arctic tundra is a cold, desert-like biome, with a layer of permanently frozen soil and organic matter below the surface containing vast stocks of carbon. As Arctic tundra soils warm in response to