400-Meter Resolution Climate Grids
400-Meter Resolution 1971-2000 Mean Monthly Climate Grids for the Conterminous United States
This data set provides 1971-2000 mean monthly minimum and maximum temperature and precipitation at an unprecedented grid resolution of approximately 400 meters (15 arc-seconds). At this resolution, there are 25 times as many grid cells as our line up of 2-km products blanket the conterminous United States.
The data set was created using the latest version of the PRISM climate mapping system, a highly regarded world-class climate mapping technology that was used to generate other Climate Source data sets. Data used in the interpolation process consisted of a comprehensive collection of stations from many networks, including the National Weather Service Cooperative Network, USDA Snow Telemetry, US Forest Service Remote Automatic Weather Stations, local networks, snow courses, values estimated from vegetation, expert opinion, and others (16,615 precipitation sites and over 11,500 temperature sites). Station data for 1971-2000 were quality controlled using a spatial QC system, and interpolated to a regular grid at a monthly time step. A new digital elevation model (DEM) was carefully constructed from the USGS 1-sec National Elevation Dataset (NED) to provide high-quality gridded elevation data for the mapping process
This high-resolution data set is available for any state, region, or for the entire conterminous U.S.
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For more details on this data sets, see the fact sheet.