OLR: outgoing long wave radiation

wiki, GOES-R, NOAA,

Outgoing Longwave Radiation (OLR) data at the top of the atmosphere are observed from the Advanced Very High Resolution Radiometer (AVHRR) instrument aboard the NOAA polar orbiting spacecraft. Data are centered across equatorial areas from 160°E to 160°W longitude. The raw data are converted into a standardized anomaly index. Negative (Positive) OLR are indicative of enhanced(suppressed) convection and hence more (less) cloud coverage typical of El Niño (La Niña) episodes.More (Less) convective activity in the central and eastern equatorial Pacific implies higher (lower),colder (warmer) cloud tops, which emit much less (more) infrared radiation into space. More information can be found at the Climate Prediction Center OLR page.

Outgoing Longwave Radiation (OLR) Last 12 Months (W/m2)
NOV 2013 DEC 2013 JAN 2014 FEB 2014 MAR 2014 APR 2014 MAY 2014 JUN 2014 JUL 2014 AUG 2014 SEP 2014 OCT 2014
+0.8
+0.9
+0.4
+0.2
+0.4
+0.2
-1.1
-1.0
-0.1
-0.7
-0.1
-0.1
Outgoing Longwave Radiation (OLR) Time series since 2000

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