Trump administration dismisses all authors of National Climate Assessment

05/03/2025 / By Laura Harris

Hundreds of scientists contributing to the National Climate Assessment (NCA), a congressionally mandated climate report, were abruptly dismissed.
The NCA’s findings (including warnings on extreme weather, sea-level rise, and health risks) contradict Trump’s dismissal of climate science as a “hoax.” Past reports have informed critical policy decisions, but the administration’s actions threaten their continuity.
The U.S. Global Change Research Program (USGCRP), which oversees the NCA and coordinates climate research across 13 agencies (NASA, NOAA, EPA), had its funding canceled.
NASA also terminated its contract with a key consulting firm managing inter-agency cooperation, jeopardizing the NCA’s legal mandate for updates every four years.
With experts dismissed, funding slashed and inter-agency collaboration disrupted, the scientific independence and completion of future climate assessments are in doubt, despite legal requirements.

The Trump administration has abruptly dismissed hundreds of scientists and experts contributing to the U.S. government’s flagship report on climate change.

Since 2000, the National Climate Assessment (NCA) has provided a peer-reviewed, congressionally mandated analysis of how climate change affects the U.S., covering impacts on health, agriculture, infrastructure and more. The NCA relies on volunteer experts from universities, federal agencies and research institutions, with drafts reviewed by 14 federal agencies and the public. Past reports have driven policy at state and municipal levels, guiding infrastructure projects, disaster planning and public health initiatives.

The most recent report, released in 2023, warned of worsening heat waves, extreme weather and rising sea levels – conclusions that starkly contradicted statements from President Donald Trump and his Cabinet, who have frequently dismissed climate science as a “hoax.” (Related: ABSURD: National Climate Assessment report attempts to link climate change to PANDEMICS and PATHOGENS.)

Now, work on the sixth assessment, set for release in 2028, has been stalled following the mass dismissal of experts who were key to its development.

According to an email from the U.S. Global Change Research Program (USGCRP) sent to nearly 400 contributors to the sixth edition of the report on April 28, the administration will be terminating their participation after reevaluation of the scope of the study under the Global Change Research Act of 1990.

“We are now releasing all current assessment participants from their roles,” the email said. “As plans develop for the assessment, there may be future opportunities to contribute or engage. Thank you for your service.”

The USGCRP, which falls under the White House Office of Science and Technology Policy, has not clarified whether the report will proceed under revised terms or if its scientific independence will be preserved.

Trump cancels funding for the USGCRP

The move comes just weeks after the Trump administration canceled the funding for the USGCRP, which had overseen the climate assessments since their inception under Republican President George H.W. Bush in 1990.

USGCRP coordinates climate research across 13 federal agencies, including the National Aeronautics and Space Administration (NASA), the National Oceanic and Atmospheric Administration (NOAA) and the Environmental Protection Agency (EPA) and produces the NCA. Under the Global Change Research Act of 1990, the report is supposed to be updated every four years, with the next edition due by 2027.

However, NASA has terminated its contract with ICF International, the consulting firm tasked with managing inter-agency cooperation for the USGCRP.

One federal official deeply involved in the program said the decision has “forever severed” cross-agency climate work. Another warned that without funding, the NCA will not move forward, despite the legal requirement. NASA has not confirmed the contract termination but stated it is “streamlining” support for the USGCRP.

“NASA is working with OSTP on how to best support the congressionally-mandated program while also increasing efficiencies across the 14 agencies and advisory committee supporting this effort,” the spokesperson said.

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