Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

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Processing, archiving and distributing Earth science data
at the NASA Langley Research Center

What is the ERBE grid system?

  • ERBE uses a regular equal-angle grid system. The ERBE regional gridded data is available in three different resolutions (2.5-degree, 5-degree, and 10-degree) depending on the instrument type.
  • For the ERBE 2.5-degree regional data set, the ERBE grid contains 10,368 2.5-degree regions. This maps to 72 latitude zones with 144 regions in each (72 * 144 = 10368). The first ERBE 2.5 degree region is located at the North Pole - Greenwich meridian. The center location of region 1 is at 88.75N and 1.25E. The 2.5 degree grid extends eastward, one 2.5 degree region at a time, around the entire 2.5-degree latitude circle and then step southward, one 2.5-degree latitude zone at a time, until it reaches region 10368, which is centered at 88.75S and 358.75E.
  • For the ERBE 5-degree regional data set, the ERBE grid contains 2592 5-degree regions. This maps to 36 latitude zones with 72 regions in each (36 * 72 = 2592). The first ERBE 5-degree region is located at the North Pole - Greenwich meridian. The center location of region 1 is at 87.5N and 2.5E. The 5-degree grid extends eastward, one 5-degree region at a time, around the entire 5-degree latitude circle and then step southward, one 5-degree latitude zone at a time, until it reaches region 2592, which is centered at 87.5S and 357.5E.
  • For the ERBE 10-degree regional data set, the ERBE grid contains 648 10-degree regions. This maps to 18 latitude zones with 36 regions in each (18 * 36 = 648). The first ERBE 10-degree region is located at the North Pole - Greenwich meridian. The center location of region 1 is at 85N and 5E. The 10-degree grid extends eastward, one 10-degree region at a time, around the entire 10-degree latitude circle and then step southward, one 10-degree latitude zone at a time, until it reaches region 648, which is centered at 85S and 355E.