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.
Place mouse on axis and left-click to pan; wheel up/down for zoom in/out (or shift key+left-click).
Source: https://www.cpc.ncep.noaa.gov/data/indices/olr
Download:
Date | OLR (W/m2) |
197406 | +1.1 |
197407 | +0.1 |
197408 | +1.1 |
197409 | +1.1 |
197410 | +1.2 |
197411 | +1.2 |
197412 | +0.3 |
197501 | -0.1 |
197502 | +1.1 |
197503 | +1.1 |
197504 | +0.7 |
197505 | +1.4 |
197506 | +1.0 |
197507 | +1.3 |
197508 | +1.5 |
197509 | +1.4 |
197510 | +1.5 |
197511 | +1.5 |
197512 | +2.1 |
197601 | +1.2 |
197602 | +1.2 |
197603 | +0.3 |
197604 | +0.7 |
197605 | +0.4 |
197606 | -0.3 |
197607 | -0.4 |
197608 | -0.5 |
197609 | -0.2 |
197610 | -0.4 |
197611 | +0.4 |
197612 | -0.6 |
197701 | -0.6 |
197702 | +0.6 |
197703 | -1.2 |
197704 | -0.1 |
197705 | +0.4 |
197706 | +0.4 |
197707 | -0.1 |
197708 | +0.1 |
197709 | +0.1 |
197710 | -0.1 |
197711 | -0.5 |
197712 | -1.7 |
197801 | -0.8 |
197802 | -0.9 |
197803 | -999.9 |
197804 | -999.9 |
197805 | -999.9 |
197806 | -999.9 |
197807 | -999.9 |
197808 | -999.9 |
197809 | -999.9 |
197810 | -999.9 |
197811 | -999.9 |
197812 | -999.9 |
197901 | -0.6 |
197902 | -0.6 |
197903 | -0.3 |
197904 | +0.3 |
197905 | 0.0 |
197906 | +0.4 |
197907 | +0.6 |
197908 | +0.3 |
197909 | 0.0 |
197910 | -0.6 |
197911 | -0.3 |
197912 | -0.3 |
198001 | +0.7 |
198002 | +0.4 |
198003 | -1.1 |
198004 | 0.0 |
198005 | -0.2 |
198006 | -0.7 |
198007 | -0.2 |
198008 | -0.8 |
198009 | +0.2 |
198010 | -0.2 |
198011 | -0.1 |
198012 | +0.5 |
198101 | +0.5 |
198102 | -0.7 |
198103 | -1.0 |
198104 | -0.9 |
198105 | +0.5 |
198106 | +0.4 |
198107 | +0.2 |
198108 | +1.0 |
198109 | +0.1 |
198110 | +0.3 |
198111 | +0.5 |
198112 | 0.0 |
198201 | +1.1 |
198202 | +0.1 |
198203 | -0.6 |
198204 | -0.0 |
198205 | +0.4 |
198206 | -0.2 |
198207 | -1.1 |
198208 | -1.6 |
198209 | -1.3 |
198210 | -1.7 |
198211 | -1.8 |
198212 | -0.7 |
198301 | -1.4 |
198302 | -0.7 |
198303 | 0.0 |
198304 | +0.3 |
198305 | -0.9 |
198306 | -0.9 |
198307 | -0.9 |
198308 | -0.0 |
198309 | 0.0 |
198310 | +0.5 |
198311 | +0.4 |
198312 | +1.3 |
198401 | +1.9 |
198402 | +1.9 |
198403 | +1.2 |
198404 | +1.1 |
198405 | +0.7 |
198406 | +0.5 |
198407 | +0.2 |
198408 | +0.3 |
198409 | +0.4 |
198410 | +0.3 |
198411 | 0.0 |
198412 | +0.3 |
198501 | +0.3 |
198502 | +1.2 |
198503 | -0.7 |
198504 | +0.8 |
198505 | +1.1 |
198506 | +0.5 |
198507 | +0.5 |
198508 | +0.5 |
198509 | +0.1 |
198510 | +0.3 |
198511 | +0.1 |
198512 | +0.2 |
198601 | +0.3 |
198602 | +0.9 |
198603 | +1.1 |
198604 | +0.4 |
198605 | +0.3 |
198606 | -0.2 |
198607 | -0.1 |
198608 | +0.3 |
198609 | -0.9 |
198610 | -0.6 |
198611 | -1.3 |
198612 | -2.2 |
198701 | -2.2 |
198702 | -2.3 |
198703 | -1.4 |
198704 | -1.3 |
198705 | -1.9 |
198706 | -1.2 |
198707 | -2.1 |
198708 | -1.5 |
198709 | -0.5 |
198710 | -1.0 |
198711 | -0.4 |
198712 | -1.1 |
198801 | -0.8 |
198802 | -0.7 |
198803 | +0.4 |
198804 | +0.2 |
198805 | +0.5 |
198806 | +0.9 |
198807 | +1.0 |
198808 | +1.2 |
198809 | +1.2 |
198810 | +1.0 |
198811 | +1.4 |
198812 | +1.8 |
198901 | +1.8 |
198902 | +1.7 |
198903 | +1.3 |
198904 | +0.6 |
198905 | +0.4 |
198906 | +0.7 |
198907 | +0.5 |
198908 | +0.6 |
198909 | +0.7 |
198910 | +0.4 |
198911 | -0.4 |
198912 | 0.0 |
199001 | -0.9 |
199002 | -1.0 |
199003 | -1.5 |
199004 | -0.8 |
199005 | -0.0 |
199006 | +0.1 |
199007 | -0.1 |
199008 | -0.6 |
199009 | -0.6 |
199010 | 0.0 |
199011 | -0.2 |
199012 | -0.3 |
199101 | -0.3 |
199102 | -0.6 |
199103 | -0.4 |
199104 | -0.0 |
199105 | -0.1 |
199106 | -0.2 |
199107 | -0.4 |
199108 | -0.9 |
199109 | -0.6 |
199110 | -0.4 |
199111 | -2.3 |
199112 | -1.6 |
199201 | -2.1 |
199202 | -1.3 |
199203 | -2.1 |
199204 | -1.7 |
199205 | -1.8 |
199206 | -1.0 |
199207 | -0.3 |
199208 | -0.1 |
199209 | +0.1 |
199210 | -0.4 |
199211 | -0.9 |
199212 | -1.3 |
199301 | -0.6 |
199302 | -1.6 |
199303 | -1.0 |
199304 | -2.1 |
199305 | -1.5 |
199306 | -1.4 |
199307 | -1.2 |
199308 | -0.5 |
199309 | -0.8 |
199310 | -1.4 |
199311 | +0.1 |
199312 | -0.5 |
199401 | 0.0 |
199402 | +0.6 |
199403 | +0.2 |
199404 | -0.4 |
199405 | -0.2 |
199406 | +0.1 |
199407 | -0.2 |
199408 | -0.5 |
199409 | -0.9 |
199410 | -0.4 |
199411 | -1.2 |
199412 | -2.6 |
199501 | -1.6 |
199502 | -0.6 |
199503 | -0.0 |
199504 | +0.2 |
199505 | +0.2 |
199506 | +0.5 |
199507 | +0.5 |
199508 | +0.8 |
199509 | +0.5 |
199510 | +1.0 |
199511 | +1.1 |
199512 | +1.2 |
199601 | +1.9 |
199602 | +1.6 |
199603 | +1.0 |
199604 | +0.4 |
199605 | +0.4 |
199606 | +0.5 |
199607 | +0.6 |
199608 | +0.6 |
199609 | +0.8 |
199610 | +0.6 |
199611 | +0.8 |
199612 | +0.9 |
199701 | +0.6 |
199702 | +0.5 |
199703 | -1.0 |
199704 | -1.2 |
199705 | -1.7 |
199706 | -0.9 |
199707 | -1.4 |
199708 | -1.6 |
199709 | -1.2 |
199710 | -2.4 |
199711 | -0.4 |
199712 | -1.3 |
199801 | -0.6 |
199802 | -0.3 |
199803 | +0.1 |
199804 | +1.0 |
199805 | -0.4 |
199806 | -0.0 |
199807 | +0.6 |
199808 | +0.7 |
199809 | +1.0 |
199810 | +0.9 |
199811 | +1.3 |
199812 | +1.5 |
199901 | +1.9 |
199902 | +1.2 |
199903 | +1.4 |
199904 | +1.0 |
199905 | +0.7 |
199906 | +0.6 |
199907 | +0.3 |
199908 | +0.8 |
199909 | +1.1 |
199910 | +1.0 |
199911 | +0.9 |
199912 | +2.0 |
200001 | +1.9 |
200002 | +2.2 |
200003 | +1.7 |
200004 | +1.1 |
200005 | +0.4 |
200006 | +0.8 |
200007 | +0.9 |
200008 | -0.0 |
200009 | +0.7 |
200010 | +0.5 |
200011 | +0.9 |
200012 | +1.2 |
200101 | +1.7 |
200102 | +0.6 |
200103 | +0.8 |
200104 | 0.0 |
200105 | -0.2 |
200106 | 0.0 |
200107 | +0.1 |
200108 | -0.3 |
200109 | +0.4 |
200110 | 0.0 |
200111 | -0.2 |
200112 | -1.6 |
200201 | -0.1 |
200202 | -1.2 |
200203 | -1.0 |
200204 | +0.2 |
200205 | +0.1 |
200206 | -0.7 |
200207 | +0.3 |
200208 | -1.5 |
200209 | -1.8 |
200210 | -1.3 |
200211 | -1.6 |
200212 | -1.4 |
200301 | -2.2 |
200302 | -1.1 |
200303 | -0.8 |
200304 | +0.3 |
200305 | +0.1 |
200306 | +0.8 |
200307 | -0.1 |
200308 | +0.6 |
200309 | +0.1 |
200310 | +0.1 |
200311 | +0.7 |
200312 | +0.1 |
200401 | -0.8 |
200402 | +0.4 |
200403 | -0.5 |
200404 | -0.9 |
200405 | +0.2 |
200406 | -1.1 |
200407 | +0.3 |
200408 | -0.3 |
200409 | -0.2 |
200410 | -0.2 |
200411 | -0.5 |
200412 | +0.1 |
200501 | -0.0 |
200502 | -2.2 |
200503 | -0.0 |
200504 | -0.5 |
200505 | -0.2 |
200506 | +0.1 |
200507 | -0.5 |
200508 | +0.4 |
200509 | -0.0 |
200510 | +0.1 |
200511 | +0.7 |
200512 | +1.0 |
200601 | +1.0 |
200602 | +0.4 |
200603 | +1.0 |
200604 | +0.3 |
200605 | +0.7 |
200606 | -0.4 |
200607 | +0.1 |
200608 | -0.4 |
200609 | -0.4 |
200610 | -0.9 |
200611 | -0.5 |
200612 | -0.6 |
200701 | -1.3 |
200702 | -0.1 |
200703 | +0.4 |
200704 | -0.1 |
200705 | 0.0 |
200706 | +0.4 |
200707 | +0.8 |
200708 | +0.5 |
200709 | +0.6 |
200710 | +1.1 |
200711 | +0.5 |
200712 | +1.7 |
200801 | +0.7 |
200802 | +2.1 |
200803 | +1.8 |
200804 | +1.2 |
200805 | +0.9 |
200806 | +0.3 |
200807 | +0.6 |
200808 | +0.4 |
200809 | +0.2 |
200810 | +0.9 |
200811 | +0.8 |
200812 | +1.8 |
200901 | +1.4 |
200902 | +1.3 |
200903 | +0.9 |
200904 | +0.7 |
200905 | +0.6 |
200906 | -999.9 |
200907 | -999.9 |
200908 | -999.9 |
200909 | -999.9 |
200910 | -999.9 |
200911 | -999.9 |
200912 | -2.4 |
201001 | -2.0 |
201002 | -2.3 |
201003 | -1.5 |
201004 | -0.3 |
201005 | +0.6 |
201006 | +1.0 |
201007 | +0.9 |
201008 | +1.1 |
201009 | +1.4 |
201010 | +1.5 |
201011 | +1.7 |
201012 | +2.4 |
201101 | +2.1 |
201102 | +2.3 |
201103 | +1.7 |
201104 | +1.1 |
201105 | +0.2 |
201106 | -0.1 |
201107 | +0.1 |
201108 | +0.3 |
201109 | +0.3 |
201110 | +1.1 |
201111 | +1.0 |
201112 | +1.7 |
201201 | +1.8 |
201202 | +1.9 |
201203 | +0.8 |
201204 | +0.1 |
201205 | -0.1 |
201206 | +0.2 |
201207 | -0.7 |
201208 | +0.2 |
201209 | -0.4 |
201210 | -0.2 |
201211 | 0.0 |
201212 | +0.7 |
201301 | -0.2 |
201302 | +0.1 |
201303 | -0.3 |
201304 | +0.6 |
201305 | +0.6 |
201306 | +0.4 |
201307 | +0.7 |
201308 | +0.9 |
201309 | +0.4 |
201310 | +0.2 |
201311 | +0.8 |
201312 | +0.9 |
201401 | +0.4 |
201402 | +0.2 |
201403 | -1.1 |
201404 | -1.0 |
201405 | -0.1 |
201406 | -0.7 |
201407 | -0.1 |
201408 | +0.4 |
201409 | +0.2 |
201410 | -0.1 |
201411 | +0.4 |
201412 | +0.2 |
201501 | +0.2 |
201502 | -0.2 |
201503 | -1.9 |
201504 | -1.1 |
201505 | -0.9 |
201506 | -1.4 |
201507 | -0.3 |
201508 | -1.4 |
201509 | -1.5 |
201510 | -1.4 |
201511 | -1.3 |
201512 | -2.5 |
201601 | -1.9 |
201602 | -2.4 |
201603 | -1.6 |
201604 | -0.9 |
201605 | -0.2 |
201606 | +0.1 |
201607 | +0.5 |
201608 | +0.8 |
201609 | +0.9 |
201610 | +1.0 |
201611 | +1.4 |
201612 | +1.4 |
201701 | +1.1 |
201702 | +1.4 |
201703 | +1.1 |
201704 | +0.4 |
201705 | +0.1 |
201706 | +0.6 |
201707 | -0.4 |
201708 | +0.3 |
201709 | +0.8 |
201710 | +0.7 |
201711 | +1.1 |
201712 | +0.9 |
201801 | +1.8 |
201802 | -0.0 |
201803 | +0.5 |
201804 | +1.2 |
201805 | +1.0 |
201806 | +1.1 |
201807 | +0.3 |
201808 | +0.4 |
201809 | +0.3 |
201810 | +0.4 |
201811 | -0.3 |
201812 | -0.1 |
201901 | -0.6 |
201902 | -1.9 |
201903 | -1.2 |
201904 | -0.8 |
201905 | -0.7 |
201906 | -0.3 |
201907 | +0.2 |
201908 | +0.1 |
201909 | +0.6 |
201910 | +0.6 |
201911 | +0.1 |
201912 | 0.0 |
202001 | -0.6 |
202002 | -1.3 |
202003 | +0.1 |
202004 | +0.7 |
202005 | +0.7 |
202006 | +1.1 |
202007 | +0.9 |
202008 | +0.9 |
202009 | +0.9 |
202010 | +1.2 |
202011 | +1.5 |
202012 | +2.0 |
202101 | +2.4 |
202102 | +1.1 |
202103 | +1.4 |