Outgoing Longwave Radiation Climate Data Record
UMD OLR CDR Portal
Current time:
(Day of Year=)
Products:
1. Daily Mean OLR
- 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, 36-hr lag)
Data access:
Year 2022 Interim: olr-daily_v01r02-preliminary_20220101_latest.nc
Year 1979-2021 Final, Concatenated: olr-daily_v01r02_19790101_20211231.nc
Year 1979-2021 Final: NCEI Daily OLR CDR Data Server
THREDDS: NCEI THREDDS Data Server for Daily OLR CDR
2. Monthly Mean OLR
- 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)
THREDDS: NCEI THREDDS Data Server for Monthly OLR CDR
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.