On this page you may calculate a trend for the contiguous United States or for a specific latitude band (Global, Hemispheric, Polar, Extratropics, or Tropics), wholly, or for land/ocean regions separately. Simply choose the latitude band/region and period of record desired from the pull-down menus below. Results will be returned in approximately 30 to 60 seconds after you have entered these parameters and clicked on the "Calculate trend" button below.

If you would like calculate a trend for any other portion of the globe not listed below, click here. You will be redirected to another web page from which you may select a user-defined region based on 2.5° latitude/longitude grid cells.