gov.noaa.ncdc:C01757 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 2026-10-09T14:44:01 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 Pathfinder Atmospheres Extended (PATMOS-x) Fundamental Climate Data Record (FCDR) and PATMOS-x Cloud Properties CDR (01B-01), Version 7 PATMOS-x FCDR; PATMOS-x Cloud Properties; PATMOS-X-CDR_01B-01_v07r00 2026-09-22 publication Version 7 OISS Collection ID: PATMOS-X-CDR_01B-01_v07r00 gov.noaa.ncdc:C01757 NOAA National Centers for Environmental Information publisher Foster, Michael J. University of Wisconsin–Madison Space Science and Engineering Center principalInvestigator Foster, Michael J. University of Wisconsin–Madison Space Science and Engineering Center author Phillips, Coda University of Wisconsin–Madison Space Science and Engineering Center collaborator Phillips, Coda University of Wisconsin–Madison Space Science and Engineering Center author Heidinger, Andrew K. University of Wisconsin–Madison Space Science and Engineering Center collaborator Heidinger, Andrew K. University of Wisconsin–Madison Space Science and Engineering Center author NOAA CDR Program collaborator imageDigital The Pathfinder Atmospheres - Extended (PATMOS-x) Version 7.0 suite of cloud products and calibrated radiometric data is a global Climate Data Record (CDR) derived from instruments onboard the NOAA POES, EUMETSAT MetOp, and JPSS satellites. Therefore, this Version 7.0 CDR contains three different sensor combinations. Spectral information from the Advanced Very High Resolution Radiometer (AVHRR) is integrated with the High-resolution Infra-Red Sounder (HIRS) for NOAA POES satellites and MetOp-A/B. For MetOp-C and the later MetOp-B record, the HIRS data is replaced with a simulated HIRS, derived from the Infrared Atmospheric Sounding Interferometer (IASI). The Visible Infrared Imaging Radiometer Suite (VIIRS) onboard JPSS satellites replaces the AVHRR. The VIIRS imager data is integrated with a simulated HIRS sounder, derived from the Cross-track Infrared Sounder (CrIS). The record spans from 1981 to present, and is generated from between two and sixteen satellite overpasses daily. The primary cloud products were derived from the Infrared (IR) Algorithm Working Group (AWG) cloud height algorithm (ACHA) and the daytime cloud optical and microphysical properties (DCOMP) algorithm. The calibrated radiometric data covering the visible spectrum includes 0.63, 0.86, and 1.6 micron reflectance from AVHRR. In the infrared this includes 3.75, 11, and 12 micron brightness temperatures from AVHRR, and 6.7 micron and 4 of the CO2 channel brightness temperatures from HIRS. The AVHRR sensor resolution is approximately 1.09 km near nadir, however, it has been aggregated to approximately 4 km within the Global Area Coverage (GAC) files used for processing. The native HIRS resolution is coarser, and it has been interpolated to the AVHRR pixel size and location using a data fusion algorithm. CrIS and IASI data are similarly interpolated. VIIRS data is coarsened to GAC resolution (VGAC). The daily orbital data have been reprojected to two 0.1 x 0.1 degree equal-angle grids, one for each overpass. The final files cover the CDR period of record up to the last achievable final processing date. The preliminary files are updated daily. The latency of the preliminary files is within seven days from real-time. Every one to two years, the final files are completed and replace the preliminary for the same time period. The product is in NetCDF file format following the Climate and Forecast (CF) Conventions and the Attribute Convention for Dataset Discovery (ACDD). The CDR is accompanied by algorithm documentation, data flow diagram, and source code. The AVHRR+HIRS data record offers a unique, long-term resource for multi-decadal climate studies. PATMOS-x improved the quality of the dataset by recalibrating and renavigating the data. The resulting CDR supports climate variability studies over the period of record. onGoing 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 patmosx.contacts@noaa.gov 8:00 - 6:00 Eastern pointOfContact daily https://data.noaa.gov/docucomp/image/de3d8dd6-3c7b-480d-9793-1a8349a34462 Top of atmosphere reflectance (%) at the nominal wavelength of 0.65 microns. PNG Earth Science > Spectral/Engineering > Visible Wavelengths > Visible Radiance Earth Science > Spectral/Engineering > Infrared Wavelengths > Brightness Temperature Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Top Height Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Fraction Earth Science > Atmosphere > Clouds > Cloud Microphysics > Cloud Optical Depth/Thickness Earth Science > Atmosphere > Clouds > Cloud Radiative Transfer > Cloud Emissivity Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Top Pressure Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Top Temperature theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Geographic Region > Global place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian NOAA Climate Data Record (CDR) Program NOAA OneStop Project project Global Change Master Directory (GCMD) Project Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian AVHRR > Advanced Very High Resolution Radiometer AVHRR-2 > Advanced Very High Resolution Radiometer-2 AVHRR-3 > Advanced Very High Resolution Radiometer-3 HIRS > High Resolution Infrared Radiation Sounder CrIS > Cross-track Infrared Sounder VIIRS > Visible-Infrared Imager-Radiometer Suite instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian 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 MetOp-A > Meteorological Operational Satellite - A MetOp-B > Meteorological Operational Satellite - B METOP-C > Meteorological Operational Satellite - C JPSS-1 > Joint Polar Satellite System - 1 JPSS-2 > Joint Polar Satellite System - 2 platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce UWI-MAD/SSEC > Space Science and Engineering Center, University of Wisconsin, Madison dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian license These data are not subject to copyright protection in the United States. Any potential copyright and related rights in these data is waived worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) See the CDR page for the use agreement, technical notes, and other documentation describing the use limitations. The near real-time data is labeled as an Interim operational CDR (ICDR) or a "preliminary" CDR instead of a final CDR, indicating that it has not yet been fully vetted for climate applications. The near real-time ICDR/preliminary data will transition to final CDR status after the data have undergone further analysis and processing. The expected time lag of the final CDR transition is approximately one year. The state of a data file is indicated within each file name. otherRestrictions Cite as: Foster, Michael J.; Phillips, Coda; and Heidinger, Andrew K. (2026): NOAA Climate Data Record (CDR) of Pathfinder Atmospheres Extended (PATMOS-x) Fundamental Climate Data Record (FCDR) and PATMOS-x Cloud Properties CDR (01B-01), Version 7. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.7289/{{DOI}} [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. The Pathfinder Atmospheres-Extended AVHRR Climate Dataset 2014-06 publication Heidinger, A. K. author Foster, M. J. author Walther, A. author Zhao, X. author American Meteorological Society publisher https://doi.org/10.1175/BAMS-D-12-00246.1 HTTPS Web Browser Journal Article published June 2014 by the American Meteorological Society Heidinger, A.K., M.J. Foster, A. Walther, and X. Zhao, 2014: The Pathfinder Atmospheres-Extended AVHRR Climate Dataset. Bull. Amer. Meteor. Soc., 95, 909-922, https://doi.org/10.1175/BAMS-D-12-00246.1 information crossReference sciencePaper Other publications that cite this dataset https://scholar.google.com/scholar?q=10.7289%2FV5X9287S+OR+10.1175%2FBAMS-D-12-00246.1 HTTPS Web Browser Google Scholar search results Search results for publications that cite this dataset by its DOI(s). information crossReference project NOAA Climate Data Record (CDR) of Advanced Very High Resolution Radiometer (AVHRR) and High-resolution Infra-Red Sounder (HIRS) Reflectance, Brightness Temperature, and Cloud Products from Pathfinder Atmospheres - Extended (PATMOS-x), Version 6.0 (Superseded) 2021-08-04 publication Version 6.0 NOAA National Centers for Environmental Information publisher https://doi.org/10.7289/V5X9287S HTTPS Web Browser NOAA Climate Data Record (CDR) of Advanced Very High Resolution Radiometer (AVHRR) and High-resolution Infra-Red Sounder (HIRS) Reflectance, Brightness Temperature, and Cloud Products from Pathfinder Atmospheres - Extended (PATMOS-x), Version 6.0 (Superseded) NCEI Landing Page for the Superseded Version. information crossReference collection NOAA Climate Data Record (CDR) of Reflectance and Brightness Temperatures from AVHRR Pathfinder Atmospheres - Extended (PATMOS-x), Version 5.3 (Superseded) 2014 publication Version 5.3 NOAA National Centers for Environmental Information publisher https://doi.org/10.7289/V56W982J HTTPS Web Browser NOAA Climate Data Record (CDR) of Reflectance and Brightness Temperatures from AVHRR Pathfinder Atmospheres - Extended (PATMOS-x), Version 5.3 (Superseded) NCEI Landing Page for the Superseded Version. information crossReference collection NOAA Climate Data Record (CDR) of Cloud Properties from AVHRR Pathfinder Atmospheres - Extended (PATMOS-x), Version 5.3 (Superseded) 2014 publication Version 5.3 NOAA National Centers for Environmental Information publisher https://doi.org/10.7289/V5348HCK HTTPS Web Browser NOAA Climate Data Record (CDR) of Cloud Properties from AVHRR Pathfinder Atmospheres - Extended (PATMOS-x), Version 5.3 (Superseded) NCEI Landing Page for the Superseded Version. information crossReference collection University of Wisconsin-Madison Cooperative Institute for Meteorological Satellite Studies (CIMSS) PATMOS-x https://cimss.ssec.wisc.edu/patmosx/ HTTPS Web Browser CIMSS PATMOS-x page Project page with dataset information. information crossReference project grid 10000 eng; USA climatologyMeteorologyAtmosphere 1 -180.0 180.0 -90.0 90.0 ground condition 1980-01-22 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 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://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncdc:C01757 HTTPS Landing Page NCEI Dataset Landing Page Landing page for the dataset. information https://www.ncei.noaa.gov/products/climate-data-records/patmos-x-fcdr HTTPS Information NCEI CDR Information Page (PATMOS-x FCDR) CDR overview and documentation. information https://www.ncei.noaa.gov/products/climate-data-records/patmos-x-cloud-properties HTTPS Information NCEI CDR Information Page (PATMOS-x Cloud Properties) CDR overview and documentation. information https://archive.data.noaa.gov/climatedatarecords#UWM_SSEC/PATMOS-X-CDR/Daily/PATMOS-X-CDR_01B-01/access/ S3 Download AWS S3 Download S3 Bucket access for dataset files. download dataset The data were produced by the University of Wisconsin – Madison CIMSS (Cooperative Institute for Meteorological Satellite Studies) and are archived at the NOAA National Centers for Environmental Information (NCEI). For a description of the processing steps, see the Algorithm Theoretical Basis Document and Data Flow Diagram for this dataset. UWI-MAD/SSEC/CIMSS > Cooperative Institute for Meteorological Satellite Studies, Space Science and Engineering Center, University of Wisconsin, Madison processor CDR v07r00 CDR Source Code 2026 publication 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/patmos-x-fcdr/SourceCode_01B-1c.tar.gz HTTPS Web Browser CDR Source Code (PATMOS-x FCDR) 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 https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/patmos-x-cloud-properties/SourceCode_01B-1d.tar.gz HTTPS Web Browser CDR Source Code (PATMOS-x Cloud Properties) 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 2026 publication 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/patmos-x-fcdr/DataFlowDiagram_01B-1c.pdf HTTPS Web Browser CDR Data Flow Diagram (PATMOS-x FCDR) Data processing flowchart for the CDR product. information https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/patmos-x-cloud-properties/DataFlowDiagram_01B-1d.pdf HTTPS Web Browser CDR Data Flow Diagram (PATMOS-x Cloud Properties) Data processing flowchart for the CDR product. information CDR Maturity Matrix 2026 publication 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/patmos-x-fcdr/MaturityMatrix_01B-1c.pdf HTTPS Web Browser CDR Maturity Matrix (PATMOS-x FCDR) Climate Data Record (CDR) Maturity Matrix information https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/patmos-x-cloud-properties/MaturityMatrix_01B-1d.pdf HTTPS Web Browser CDR Maturity Matrix (PATMOS-x Cloud Properties) Climate Data Record (CDR) Maturity Matrix information Climate Algorithm Theoretical Basis Document (C-ATBD) 2026 publication 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/patmos-x-fcdr/AlgorithmDescription%20_01B-1c.pdf HTTPS Web Browser CDR Algorithm Description (PATMOS-x FCDR) Algorithm Theoretical Basis Document for the CDR product. information https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/patmos-x-cloud-properties/AlgorithmDescription/ HTTPS Web Browser CDR Algorithm Description (PATMOS-x Cloud Properties) Algorithm Theoretical Basis Document for the CDR product. information AVHRR Global Area Coverage (GAC) Level 1b dataset Land Surface Ancillary Data Reanalysis Data 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.