The Trump administration has dismissed numerous scientists and experts who were working on the federal government’s key report regarding the impacts of global warming on the nation.

This decision, which is obligatory in Congress, poses significant risks to the future of the National Climate Assessment, according to experts.

Since 2000, the federal government has released an in-depth report every few years detailing how rising temperatures influence human health, agriculture, fisheries, water resources, transportation, energy generation, and various aspects of the U.S. economy. The latest climate assessment was published in 2023. This report is utilized not only by state and local authorities but also by private enterprises, assisting in preparations for extreme weather events, floods, droughts, and other climate-related challenges.

On Monday, researchers nationwide began the preparation for the sixth National Climate Assessment, scheduled for early 2028, only to receive an email indicating that the report’s scope is “currently under review” and all contributors have been dismissed.

“We are now liberating all existing assessment contributors from their roles,” the email stated. “As the evaluation plan progresses, there may be future chances for contribution or involvement. Thank you for your service.”

For some authors, this felt like a devastating setback for the next report.

“This could signal the end of the assessment,” remarked Jesse Keenan, a professor at Tulane University specializing in climate adaptation and a co-author of the previous climate assessment. “If we eliminate all involved, there will be no advancement.”

The White House has not yet responded to requests for comments.

Climate assessments are generally compiled by volunteer scientists and expert contributors from across the nation. The process involves multiple reviews by 14 federal agencies and a public comment period. Oversight is provided by the Global Change Research Program, a federal entity established by Congress in 1990, with support from NASA.

During the Trump administration, this process faced significant upheaval. Recently, NASA terminated its major partnership with ICF International, a consulting firm that supplied much of the technical support and staffing for the Global Change Research Program, which coordinates the contributions from numerous sources.

President Trump has consistently downplayed the risks associated with global warming. Russell Vert, the current head of the Office of Management and Budget, noted in a pre-election document that the next president should “reorganize” the global change research program, as scientific reports on climate change were often utilized in environmental litigation that restricted federal actions.

Vought advocated for the separation of the National Oceanic and Atmospheric Administration, the agency responsible for the government’s largest climate research unit, termed the “climate warning.”

During Trump’s first term, the administration made efforts to undermine the national climate assessment. When the 2018 report was released, which found that global warming posed an imminent and catastrophic threat, the administration published it the day after Thanksgiving to lessen its impact.

In February, scientists submitted a comprehensive summary of the upcoming assessment to the White House for initial review; however, that review has been halted, and the agency’s comment period has been delayed.

It remains uncertain what will happen next with the assessment, which is still mandated by Congress. Some scientists worry that the administration may attempt to draft an entirely new report from scratch, potentially downplaying the dangers of rising temperatures and contradicting established climate science.

“These are the most effective strategies to assist us,” said Mead Crosby, a senior scientist in the Climate Impact Group at the University of Washington, who has contributed to the assessment. “The real question is whether it accurately reflects reliable science and has a tangible impact on our community in preparing for climate change.”

Scientists previously involved in climate assessments assert that the report is crucial for understanding the effects of climate change on daily life in the United States.

Catherine Hayho, a climate scientist at Texas Tech, stated this month, “we are considering that global issue and making it more relevant to us.” “If you care about food, water, transportation, insurance, or health, this is what climate change signifies for residents in the Southwest or the Great Plains. That’s the importance.”

Numerous state and local policymakers, along with private companies, depend on these assessments to comprehend how climate change impacts various regions of the United States and how they can adapt accordingly.

While the scientific understanding of climate change and its repercussions has not dramatically shifted since the last assessment in 2023, Dr. Keenan from Tulane noted that research is continuously advancing regarding what communities can do to mitigate rising sea levels and other issues exacerbated by increasing temperatures.

Scientists indicated that decision-makers responsible for the final assessment would likely rely on outdated information regarding effective adaptations and mitigation measures.

“We risk losing our fundamental report, which is intended to communicate the dangers of climate change and propose advancements,” stated Dustin Mulbany, an environmental studies professor and author at San Jose State University. “That would be quite devastating.”