Region

North America

Climate Data Historical

Historical climate information provides significant context to understand future climate projections. Climate information can be analyzed though various levels, from temporal to spatial. In fact, temperature and precipitation both exhibit  substantial spatial and interannual variability. Therefore, the Climate Change Knowledge Portal (CCKP) provides users the options to visualize climate data via a map and/or as an annual cycle chart. The annual/monthly temperature and precipitation data is provided by the Climatic Research Unit (CRU) of the University of East Anglia (UEA), and reprocessed by National Center for Atmospheric Research (NCAR) of the University Corporation for Atmospheric Research (UCAR). A detailed metadata can be found here.

According to the IPCC Fifth Assessment Report (AR5) and Turn Down the Heat report:

  • It is likely that since about 1950 the number of heavy precipitation events over land has increased in more regions than it has decreased.
  • The frequency and intensity of drought have likely decreased in central North America.
  • In most continents confidence in trends is not higher than medium except in North America and Europe where there have been likely increases in either the frequency or intensity of heavy precipitation.
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Click on map to change chart data from region aggregated to site-specific data.