gov.noaa.ncdc:C01732 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2025-12-12T14:45:41 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA Climate Data Record (CDR) of Daily Outgoing Longwave Radiation (OLR), Version 2.0 Outgoing Longwave Radiation - Daily 2025-08-26 publication Version 2.0 AWS Collection ID: olr-daily_01B-21_v02r00 gov.noaa.ncdc:C01732 doi:10.25921/9pt5-by77 NOAA National Centers for Environmental Information User Engagement and Services Branch +1 (828) 271-4800 +1 (828) 271-4876 151 Patton Avenue Veach-Baley Federal Building, Room 468 Asheville NC 28801-5001 USA ncei.orders@noaa.gov 8:00 - 6:00 Eastern publisher Lee, Hai-Tien Earth System Science Interdisciplinary Center, University of Maryland Physical Scientist principalInvestigator Lee, Hai-Tien Earth System Science Interdisciplinary Center, University of Maryland Physical Scientist author NOAA CDR Program collaborator imageDigital This Climate Data Record (CDR) contains the daily mean Outgoing Longwave Radiation (OLR) time series in global 1 degree x 1 degree equal-angle gridded maps spanning from January 1, 1979 to present, and continuing daily with a two-day lag. The OLR is estimated from radiance observations from the operational polar-orbiting sounding instruments, including HIRS, IASI and CrIS, via multispectral OLR algorithm for HIRS, and spectral flux estimation algorithms for the hyper-spectral instruments, along with other temporal and spatial averaging methodologies. These OLR CDR products are generated with HIRS/IASI/CrIS OLR retrievals from TIROS-N series satellites, MetOp series satellites, and JPSS series satellites. The OLR retrievals are inter-satellite calibrated and maintain radiometric traceability, while using geostationary-estimated OLR to accurately account for diurnal variations for Daily mean product derivation. The new HIRS OLR regression coefficients improve the retrieval consistency between HIRS-based OLR retrievals and IASI/CrIS-based OLR retrievals. The data file format is netCDF-4 with CF metadata, and it is accompanied by algorithm documentation, data flow diagram and source code for the NOAA CDR Program. This dataset provides a high quality Climate Data Record (CDR) of daily Outgoing Longwave Radiation (OLR). Examples of applications are users conducting studies/operation in global change monitoring, earth radiation budget, precipitation, tropical dynamics and monsoon diagnostics/forecast, and tropical expansion. NOAA National Centers for Environmental Information NOAA Climate Data Record Program Office +1 (828) 271-4800 +1 (828) 271-4328 151 Patton Avenue Veach-Baley Federal Building, Room 447 Asheville NC 28801-5001 USA daily_olr_contacts@noaa.gov https://www.ncei.noaa.gov/products/climate-data-records HTTPS Web Browser CDR Program Contacts Contact information for the CDR Program. information 8:00 - 6:00 Eastern pointOfContact daily https://data.noaa.gov/docucomp/image/5e8020ac-8e14-4b99-9c0a-14e6cff823c9 Image of Daily OLR. PNG Earth Science > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Geographic Region > Global Land place Global Change Master Directory (GCMD) Location Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher NOAA OneStop Project project Global Change Master Directory (GCMD) Project Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher HIRS-2 > High Resolution Infra-red Sounder/2 HIRS-3 > High Resolution Infra-red Sounder/3 HIRS-4 > High Resolution Infra-red Sounder/4 IASI > Infrared Atmospheric Sounding Interferometer CrIS > Cross-track Infrared Sounder instrument Global Change Master Directory (GCMD) Instrument Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher TIROS-N > Television Infrared Observation Satellite - N NOAA-6 > National Oceanic & Atmospheric Administration - 6 NOAA-7 > National Oceanic & Atmospheric Administration - 7 NOAA-8 > National Oceanic & Atmospheric Administration - 8 NOAA-9 > National Oceanic & Atmospheric Administration - 9 NOAA-10 > National Oceanic & Atmospheric Administration - 10 NOAA-11 > National Oceanic & Atmospheric Administration - 11 NOAA-12 > National Oceanic & Atmospheric Administration - 12 NOAA-14 > National Oceanic & Atmospheric Administration - 14 NOAA-15 > National Oceanic & Atmospheric Administration - 15 NOAA-16 > National Oceanic & Atmospheric Administration - 16 NOAA-17 > National Oceanic & Atmospheric Administration - 17 NOAA-18 > National Oceanic & Atmospheric Administration - 18 NOAA-19 > National Oceanic & Atmospheric Administration - 19 NOAA-20 > Joint Polar Satellite System - 1 NOAA-21 > Joint Polar Satellite System - 2 MetOp-A > Meteorological Operational Polar Satellite - A MetOp-B > Meteorological Operational Polar Satellite - B MetOp-C > Meteorological Operational Polar Satellite - C Suomi-NPP > Suomi National Polar-orbiting Partnership platform Global Change Master Directory (GCMD) Platform Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher For a complete description of use limitations for this CDR, see the Algorithm Theoretical Basis Document. otherRestrictions Cite as: Hai-Tien Lee (2025): NOAA Climate Data Record (CDR) of Daily Outgoing Longwave Radiation (OLR), Version 2.0. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/9pt5-by77. [access date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. Extending the HIRS Data Record with IASI Measurements 2023 publication 10.3390/rs15030717 MDPI AG publisher https://doi.org/10.3390/rs15030717 Web Browser Extending the HIRS Data Record with IASI Measurements DOI information crossReference sciencePaper HIRS Outgoing Longwave Radiation—Daily Climate Data Record: Application toward Identifying Tropical Subseasonal Variability 2018 publication 10.3390/rs10091325 MDPI AG publisher https://doi.org/10.3390/rs10091325 Web Browser HIRS Outgoing Longwave Radiation—Daily Climate Data Record: Application toward Identifying Tropical Subseasonal Variability DOI information crossReference sciencePaper Using IASI to simulate the total spectrum of outgoing long-wave radiances 2015 publication 10.5194/acp-15-6561-2015 Copernicus GmbH publisher https://doi.org/10.5194/acp-15-6561-2015 Web Browser Using IASI to simulate the total spectrum of outgoing long-wave radiances DOI information crossReference sciencePaper NOAA Climate Data Record (CDR) of Monthly Outgoing Longwave Radiation (OLR), Version 3.0 2025-08-26 publication Version 3.0 NOAA National Centers for Environmental Information publisher https://doi.org/10.25921/edx3-v958 HTTPS Web Browser NCEI Dataset Landing Page Landing page for the related dataset. information crossReference project grid eng; USA climatologyMeteorologyAtmosphere 1 -180.0 180.0 -90.0 90.0 1979-01-01 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. NetCDF 4 https://doi.org/10.25921/9pt5-by77 HTTPS Landing Page NCEI Dataset Landing Page Landing page for the dataset. information https://www.ncei.noaa.gov/products/climate-data-records/outgoing-longwave-radiation-daily HTTPS Information NCEI CDR Information Page CDR overview and documentation. information https://archive.data.noaa.gov/cdr#UMD_ESSIC/OLR_CDR/Daily/OLR-D-CDR_01B-21/ S3 Download AWS S3 Download S3 Bucket access for dataset files. download dataset The data were produced by the University of Maryland and are archived at the NOAA National Centers for Environmental Information. For a complete description of the processing steps, see the Algorithm Theoretical Basis Document and Data Flow Diagram. UMD/ESSIC > Earth System Science Interdisciplinary Center, University of Maryland processor CDR Version 2.0 CDR Source Code 2025-07-28 publication NOAA National Centers for Environmental Information NOAA Climate Data Record Program Office +1 (828) 271-4800 +1 (828) 271-4328 151 Patton Avenue Veach-Baley Federal Building, Room 447 Asheville NC 28801-5001 USA cdr_program.ncdc@noaa.gov 8:00 - 6:00 Eastern publisher https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/Outgoing%20Longwave%20Radiation%20-%20Daily/SourceCode_01B-21.tar.gz HTTPS Web Browser CDR Source Code (download) This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record (CDR). The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment. download CDR Data Flow Diagram 2025 publication Revision 3 CDRP-DIA-0490 NOAA National Centers for Environmental Information NOAA Climate Data Record Program Office +1 (828) 271-4800 +1 (828) 271-4328 151 Patton Avenue Veach-Baley Federal Building, Room 447 Asheville NC 28801-5001 USA cdr_program.ncdc@noaa.gov 8:00 - 6:00 Eastern publisher https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/Outgoing%20Longwave%20Radiation%20-%20Daily/DataFlowDiagram_01B-21.pdf HTTPS Web Browser CDR Data Flow Diagram Flowcharts for the CDR product. information CDR Maturity Matrix 2025 publication Revision 2 CDRP-MM-0489 NOAA National Centers for Environmental Information NOAA Climate Data Record Program Office +1 (828) 271-4800 +1 (828) 271-4328 151 Patton Avenue Veach-Baley Federal Building, Room 447 Asheville NC 28801-5001 USA cdr_program.ncdc@noaa.gov 8:00 - 6:00 Eastern publisher https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/Outgoing%20Longwave%20Radiation%20-%20Daily/MaturityMatrix_01B-21.pdf HTTPS Web Browser CDR Maturity Matrix Climate Data Record (CDR) Maturity Matrix information CDR Algorithm Description 2025-04-28 publication CDRP-ATBD-0526 NOAA National Centers for Environmental Information NOAA Climate Data Record Program Office https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/Outgoing%20Longwave%20Radiation%20-%20Daily/AlgorithmDescription_01B-21.pdf HTTPS Web Browser CDR Algorithm Description Algorithm Description for the CDR product. information Step 1: Radiance data collection, including HIRS level-1b, IASI level-1c, CrIS SDR. Step 2: HIRS radiance calibration. Step 3: OLR retrievals for HIRS, IASI, and CrIS via respective OLR algorithms. Step 4: Inter-satellite calibration. Step 5: Geo-stationary Imager radiance data collection and OLR retrieval. Step 6: Time integration and space averaging via regional 7-day boxcar calibration method. Step 7: netCDF product packing. NOAA High-resolution Infrared Radiation Sounder (HIRS) Level 1b dataset NOAA GridSat-B1 Geostationary Imager Brightness Temperatures for final CDR GSIP (GOES Surface and Insolation Product) for Interim CDR only OLR Regression Coefficients Calibration Prediction Coefficients Inter-Satellite Bias Corrections repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 asNeeded Bulk metadata change applied on 2023-07-06. See version control repository history for metadata change details. HIRS > High Resolution Infra-red Sounder HIRS-2 > High Resolution Infra-red Sounder/2 HIRS-3 > High Resolution Infra-red Sounder/3 HIRS-4 > High Resolution Infra-red Sounder/4 IASI > Infrared Atmospheric Sounding Interferometer CrIS > Cross-track Infrared Sounder TIROS-N > Television Infrared Observation Satellite - N NOAA-6 > National Oceanic & Atmospheric Administration - 6 NOAA-7 > National Oceanic & Atmospheric Administration - 7 NOAA-8 > National Oceanic & Atmospheric Administration - 8 NOAA-9 > National Oceanic & Atmospheric Administration - 9 NOAA-10 > National Oceanic & Atmospheric Administration - 10 NOAA-11 > National Oceanic & Atmospheric Administration - 11 NOAA-12 > National Oceanic & Atmospheric Administration - 12 NOAA-14 > National Oceanic & Atmospheric Administration - 14 NOAA-15 > National Oceanic & Atmospheric Administration - 15 NOAA-16 > National Oceanic & Atmospheric Administration - 16 NOAA-17 > National Oceanic & Atmospheric Administration - 17 NOAA-18 > National Oceanic & Atmospheric Administration - 18 NOAA-19 > National Oceanic & Atmospheric Administration - 19 NOAA-20 > Joint Polar Satellite System - 1 NOAA-21 > Joint Polar Satellite System - 2 MetOp-A > Meteorological Operational Polar Satellite - A MetOp-B > Meteorological Operational Polar Satellite - B MetOp-C > Meteorological Operational Polar Satellite - C Suomi-NPP > Suomi National Polar-orbiting Partnership