Monthly OLR Anomaly

This map shows monthly outgoing longwave radiation anomalies for the globe.

This map shows monthly outgoing longwave radiation (OLR) anomalies in units of Watts/m2. The period used for computing the climatology is 1974-present. Negative anomalies in green on the map imply increased cloudiness and enhanced likelihood of precipitation. Positive anomalies in brown imply decreased cloudiness and precipitation. These relationships work best in tropical regions.

These data are from the NOAA NCEP Climate Prediction Center.

Dataset Documentation

Monthly OLR Anomaly

Data

Monthly OLR anomaly values from NOAA AVHRR observations at 2.5° lat/lon resolution

Data Source

NOAA NCEP Climate Prediction Center, Monthly OLR

Analysis

Monthly OLR anomaly using 1974-present base period

Helpdesk

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