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Pentad OLR Anomaly

This map shows pentad (5-day average) outgoing longwave radiation anomalies for the globe.

This map shows pentad (5-day average) 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. The relationship between OLR anomaly and precipitation is most reliable in tropical regions.

These data are from the NOAA NCEP Climate Prediction Center.

Dataset Documentation

Pentad OLR Anomaly

Data
Pentad OLR anomaly values from NOAA AVHRR observations at 2.5° lat/lon resolution
Data Source
NOAA NCEP Climate Prediction Center, Pentad OLR
Analysis
Pentad OLR anomaly using 1974-present base period

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.