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Monthly Average OLR

This map shows monthly-average outgoing longwave radiation values for the globe, with an emphasis on tropical regions.

This map shows observed monthly-average outgoing longwave radiation (OLR) values in units of Watts/m2. Contours on the map are plotted at an interval of 10 Watts/m2. Green shading in tropical regions indicates areas where the monthly OLR is less than 240 W/m2, a general indicator of precipitation in the tropics.

These data are from the NOAA NCEP Climate Prediction Center.

Dataset Documentation

Monthly Average OLR

Monthly OLR values from NOAA AVHRR observations at 2.5° lat/lon resolution
Data Source
NOAA NCEP Climate Prediction Center, Monthly OLR
Monthly-average OLR


Access the dataset used to create this map.


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