Outgoing Longwave Radiation Climate Data Record

UMD OLR CDR Portal

Current time: (Day of Year=)

Products:

1. Daily Mean OLR

Latest Daily OLR Field

Spatial resolution: 1°x1° equal-angle grid
Temporal coverage: 1979.01.01 - day before yesterday
Refresh rate: daily (36-hr lag)
Observation sources: High-resolution Infrared Radiation Sounder (HRIS) on-board NOAA TIROS-N series and Eumetsat MetOp-A/B polar-orbiting satellites; Imagers on-board operational geostationary satellites (via Gridsat CDR and NESDIS GSIP products)
Version info: v01r02 (final CDR); v01r02-preliminary (interim CDR, 2-day lag)

Data access:
Year 2018 Interim: olr-daily_v01r02-preliminary_20180101_latest.nc
Year 2017 Interim: olr-daily_v01r02-preliminary_20170101_20171231.nc
Year 2016 Final: olr-daily_v01r02_20160101_20161231.nc
Year 1979-2015 Final: NCDC Daily OLR CDR Data Server
Year 1979-2016 Final, Concatenated: olr-daily_v01r02_19790101_20161231.nc
Animation of Interim Daily OLR fields for Year 2018
Animation of Interim Daily OLR fields for Year 2017
Animation of Final Daily OLR fields for Year 2016
Animation of Final Daily OLR fields for Year 2015
Animation of Final Daily OLR fields for Year 2014

2. Monthly Mean OLR

Latest Monthly OLR Field (v02r07)

Spatial resolution: 2.5°x2.5° equal-angle grid
Temporal coverage: January 1979 - last month
Refresh rate: monthly (on the 5th of the month)
Observation sources: High-resolution Infrared Radiation Sounder (HIRS) on-board NOAA TIROS-N series and Eumetsat MetOp-A/B polar-orbiting satellites
Version info: v02r07 (new, replacing v02r02-1 since July 2018)

Data access (1979-present, updated monthly on the 5th):
v02r07: olr-monthly_v02r07_197901_latest.nc (updated monthly on the 5th)
Animation of Monthly OLR fields for 1979 to present

Please contact Dr. Hai-Tien Lee lee@umd.edu for any questions.

OLR CDR products are funded in part by NOAA National Centers for Environmental Information (NCEI) Climate Data Record (CDR) Program.




Documentations

Schreck, C. J., H.-T. Lee and K. Knapp, 2018: HIRS Outgoing Longwave Radiation—Daily Climate Data Record: Application toward Identifying Tropical Subseasonal Variability. Remote Sens. 2018, 10, 1325; https://doi.org/10.3390/rs10091325
Lee, H.-T., 2018: Quality Assurance Summary and Results for Monthly and Daily OLR CDR (rev.20180831).
Lee, H.-T., A. Gruber, R. G. Ellingson and I. Laszlo, 2007: Development of the HIRS Outgoing Longwave Radiation climate data set. J. Atmos. Ocean. Tech., 24, 2029–2047.
Climate Algorithm Theoretical Basis Document (C-ATBD) for Monthly OLR CDR v02r07
Climate Algorithm Theoretical Basis Document (C-ATBD) for Daily OLR CDR v01r02
Lee, H.-T., 2014: Daily OLR CDR – Development and Evaluation. CERES Science Team Meeting, Apr 2014
Lee, H.-T., 2014: Daily OLR Climate Data Record. EGU General Assembly, Apr 2014
Lee, H.-T., C. J. Schreck, and K. R. Knapp, 2014: Generation of Daily OLR CDR. Eumetsat Meteorological Satellite Conference, Sep 2014
Read me for Daily OLR CDR v01r02

Related Sites

NCDC CDR Program Homepage
Daily OLR CDR NCDC Data Server
Monthly OLR CDR NCDC Data Server
NOAA NCDC News release
NCAR/UCAR Climate Data Guide
CICS-NC: Monitoring the MJO and Tropical Waves