Until now. President Trump’s nomination of Mr. Myers breaks this tradition . I’m not the only former NOAA administrator to voice concerns about his nomination. Two others have as well, citing his potential conflicts with AccuWeather. Those potential conflicts and his history of attempting to undermine NOAA’s ability to deliver free, lifesaving and commerce-enabling weather services to the public should block Mr. Myers’s confirmation.

AccuWeather, the company he co-owned and helped lead for decades (as executive vice president and general counsel and for the last 12 years as C.E.O.), relies directly on NOAA for the data and information it uses to produce and sell its products. Mr. Myers sought to prevent NOAA from providing its forecasts to the public, arguing that the private sector should do so instead, with the government’s role relegated to gathering the data, then turning it over to companies like his to sell.

Imagine emergency managers dealing with natural disasters like tornadoes, floods and hurricanes without freely available, accurate, timely weather information. Or consider farmers and others being forced to cough up money to pay for weather data as they plan how to best deal with conditions like droughts and floods, and annual and seasonal conditions.

As NOAA’s administrator, Mr. Myers would have the authority to make decisions to undercut the agency’s mission to benefit AccuWeather. Even though Mr. Myers and his wife recently resigned from the company and he sold his stock, that has done nothing to resolve the potential conflict. The family continues to be positioned to gain from decisions by Mr. Myers. He has not disclosed who purchased his stock or whether he may reclaim it in the future. He has declined to disclose even basic information about the company, like who serves on its board of directors. As several ethics groups have already noted, it is difficult to imagine how these glaring financial conflicts might be overcome if Mr. Myers is confirmed.

Mr. Myers has sought to address conflict concerns in a recusal letter to the Commerce Department’s ethics office, but it’s not sufficient, according to Walter M. Shaub Jr., former director of the U.S. Office of Government Ethics, and Gabe Lezra, staff counsel at Citizens for Responsibility and Ethics. “He leaves open the option to participate in decisions affecting AccuWeather as leading competitor in the weather forecasting industry — for instance, a decision to accede to the company’s demand that NOAA reduce the amount of weather information it releases directly to the public,” they wrote recently in an opinion article in The Washington Post. They added that “we should be worried about his refusal to adopt a broader recusal.”

If that were not enough, new findings about sexual harassment of women employed by Mr. Myers’s company while he was C.E.O. raise questions about his management and commitment to a safe and fair workplace. In March 2017 the Labor Department’s Office of Federal Contract Compliance Programs investigated and concluded that AccuWeather’s work environment had “widespread sexual harassment” that was “severe and pervasive.” Not only did AccuWeather’s management ignore this behavior; some employees were “subjected to retaliation” after making complaints, according to the department’s January 2018 summary of the investigation, which was obtained recently by The Washington Post. The Senate was not made aware of the investigation when Mr. Myers was first nominated in October 2017, nor of its findings when he was renominated in 2018 or during the third consideration of his nomination in January.

Mr. Myers is unfit to lead the nation’s premier weather and ocean science agency. By rejecting his nomination, the Senate will protect the integrity and public availability of the weather forecasts their constituents rely on, ensure that NOAA’s broader scientific mission continues unimpeded and reject leadership that presided over a pervasive climate of sexual harassment.

Jane Lubchenco (@JaneLubchenco), a marine ecologist and professor at Oregon State University, was administrator of the National Oceanic and Atmospheric Administration from 2009 to 2013.

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