![]() ![]() Visualizing climate is easier now than ever and global climate conditions are compared to the 20th-century average. NOAA scientists conduct other analyses that tell us about what used to be normal.įor example, In NOAA’s monthly and annual climate monitoring reports, temperature averages and precipitation totals are ranked in the climate record dating to 1895 U.S. The 1991-2020 Normals tell us what is normal in today’s climate. At least some of that wetness relative to the 20th-century average is linked to the overall climate warming and “wetting” of the atmosphere that’s occurred as rising temperatures cause more water to evaporate from the ocean and land surface. ![]() And yet, it’s probably not a coincidence that the last four maps in the series - the 1961-1990, 1971-2000, 1981-2010 and 1991-2020 Normals - are nationally the four wettest-looking maps in the collection.
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