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Seasonal-Average OLR

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

This map shows observed 3-month seasonal-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 3-month seasonal-average 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

Seasonal-Average OLR

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

Dataset

Access the dataset used to create this map.

Helpdesk

Contact help@iri.columbia.edu with any technical questions or problems with this Map Room.