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Dec 21, 2017 · Mapping U.S. climate trends. Our climate is changing and one of the most straightforward ways to understand these changes is by examining linear trends. In climate, to determine the linear trend we plot data values by when they occurred in the past and then determining a “best fit” line through that data.
May 4, 2021 · Normal annual U.S. precipitation as a percent of the 20th-century average for each U.S. Climate Normals period from 1901-1930 (upper left) to 1991-2020 (lower right). Places where the normal annual precipitation was 12.5 percent or more below the 20th-century average are darkest brown; places where normal annual precipitation was 12.5 percent ...
The U.S. Climate Normals are a large suite of data products that provide information about typical climate conditions for thousands of locations across the United States. Normals act both as a ruler to compare today’s weather and tomorrow’s forecast, and as a predictor of conditions in the near future. The official normals are calculated for a uniform 30 year period, and consist of annual ...
Jun 27, 2016 · Worldwide, 2016 was the warmest year on record, 2020 was the second-warmest, and 2012–2021 was the warmest decade on record since thermometer-based observations began. Global average surface temperature has risen at an average rate of 0.17°F per decade since 1901 (see Figure 2), similar to the rate of warming within the contiguous 48 states.
The annual average temperature in the U.S. has seen an upward trend since 1895, having increased by 1.02 degrees Fahrenheit in 2023 from the previous year.
May 4, 2021 · Average annual temperature change in degrees Fahrenheit for the contiguous U.S. from the 1981–2010 U.S. Climate Normals to the newest data in the 1991–2020 Normals, released by NOAA, May 2021. Averages indicate a warming pattern occurred in all but portions of the Upper Midwest and Northern Plains. Courtesy of CISESS.
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Apr 19, 2021 · In early May, the 30-year period covered by the official U.S. Climate Normals will shift from 1981-2010 to 1991-2020. Because they are updated once per decade, the Normals gradually come to reflect the "new normal" of climate change caused by global warming. Over time, the "normal" annual U.S. temperature has grown warmer, and the "normal ...
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