How does rising atmospheric CO2 affect marine organisms?

Learn how plants respond to higher atmospheric CO2 concentrations

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U.S. Historical Climatology Network (USHCN) Data Set

For a description of the USHCN data set, click here.

In this section of our web site, we invite you to analyze temperature and precipitation trends across the conterminous United States, to see for yourself whether or not our claim that "There Has Been No Global Warming for the Past 70 Years" is indeed correct, at least as far as the United States is concerned.  We believe that it is, and that for the vast majority of stations, you will see that there has been no net warming since 1930. 

To proceed with your own calculations, begin by selecting the state in which the station for which you seek information resides from the list below.

Alabama Maine Ohio
Arizona Maryland Oklahoma
Arkansas Massachusetts Oregon
California Michigan Pennsylvania
Colorado Minnesota Rhode Island
Connecticut Mississippi South Carolina
Delaware Missouri South Dakota
Florida Montana Tennessee
Georgia Nebraska Texas
Idaho Nevada Utah
Illinois New Hampshire Vermont
Indiana New Jersey Virginia
Iowa New Mexico Washington
Kansas New York West Virginia
Kentucky North Carolina Wisconsin
Louisiana North Dakota Wyoming