WASHINGTON — The Trump administration is beginning another wave of job layoffs at the nation’s weather, ocean, and fisheries agency, this time affecting more than 1,000 personnel, according to four people familiar with the situation.

The National Oceanic and Atmospheric Administration began plans to lay off 10% of its current workforce on Tuesday, according to people inside and outside the agency, some of whom requested anonymity for fear of retaliation. The numbers were presented to NOAA employees, and managers were asked to submit names of positions for layoffs to agency headquarters, which will then be sent to NOAA’s parent agency, the Department of Commerce, on Wednesday, the people said.

Three former senior NOAA officials, two of whom were political appointees in the Biden administration, spoke with management at their former agency on a regular basis and utilized the same estimate for anticipated job cuts: 1,029. They spoke with several persons still working at NOAA, and a current agency employee outlined the cuts that a manager explained to employees.

While most people are familiar with NOAA and its daily weather predictions, the organization also monitors and warns about hurricanes, tornadoes, floods, and tsunamis, regulates the country’s fisheries, operates marine sanctuaries, provides ship navigation information, and analyzes climate and ocean changes. The agency also helps to warn about avalanches and space weather, both of which can disrupt the electrical grid. It aids in disaster relief efforts, such as oil spill cleanups.

The current layoffs follow previous rounds of Trump administration firings and retirement incentives at NOAA, as well as the termination of nearly all new staff last month. After the upcoming wave of cuts, NOAA will have removed about one out of every four jobs since President Trump took office in January.

“This is not government efficiency,” remarked former NOAA Administrator Rick Spinrad. “This is the first step toward eradication. There is no way to make these types of savings without losing or significantly impacting mission capability.