gov.noaa.ncdc:C00840 eng; USA utf8 dataset National Centers for Environmental Information ISO 19115 Metadata Contact 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 https://www.ncei.noaa.gov HTTPS Web Browser NOAA National Centers for Environmental Information (NCEI) NCEI home page with information, data access and contact information. information 8:00 - 6:00 Eastern pointOfContact 2025-12-02T19:59:19 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 Cloud Properties from AVHRR Pathfinder Atmospheres - Extended (PATMOS-x), Version 5.3 AVHRR Cloud Properties - PATMOS-x 2014-07-03 publication Version 5.3 doi:10.7289/V5348HCK NCEI DSI 3626_02 gov.noaa.ncdc:C00840 Access Identifier avhrr-cloud-properties-patmosx National Centers for Environmental Information publisher Heidinger, Andrew K. principalInvestigator Heidinger, Andrew K. author Foster, Michael J. collaborator Foster, Michael J. author Walther, Andi collaborator Walther, Andi author Zhao, Xuepeng collaborator Zhao, Xuepeng author NOAA CDR Program collaborator NOAA CDR Program author imageDigital This NOAA Climate Data Record (CDR) of cloud products was produced by the University of Wisconsin using the AVHRR Pathfinder Atmospheres - Extended (PATMOS-X) Version 5.3 processing system. The CDR spans from 1979 to the present with daily, global coverage generated from between two and ten NOAA and MetOp satellite passes per day. The source AVHRR data points, with a sensor resolution of 1.09 km near nadir, have been fitted to a 0.1 x 0.1 degree equal-angle grid in ascending and descending files. The four fundamental cloud variables in the CDR include: 1) Cloud Optical Thickness; 2) Cloud Particle Size; 3) Cloud Temperature; and 4) Cloud Emissivity. These cloud products are derived using the ABI (Advanced Baseline Imager) Cloud Height Algorithm (ACHA) and the Daytime Cloud Optical Properties (DCOMP) algorithm. Other variables in this dataset were derived from the four primary variables, or generated through error/quality control assessment in the algorithms. Not counting the coordinate variables, there are 48 data and ancillary data variables in the netCDF data file to facilitate proper data usage. The file format was converted from HDF to netCDF-4 with metadata following the Climate and Forecast (CF) Conventions and Attribute Convention for Dataset Discovery (ACDD). The dataset is accompanied by algorithm documentation, data flow diagram and source code for the NOAA CDR Program. This dataset provides scientific researchers a high quality Climate Data Record (CDR) of multiple cloud properties along with AVHRR brightness temperatures. Examples of applications are climate monitoring including trend detection and quantification of climate variability, radiation and energy budget studies, climate model validation and hydrology studies. 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 avhrr_patmosx_contacts@noaa.gov https://www.ncdc.noaa.gov/cdr HTTPS Web Browser CDR Program Contacts Contact information for the CDR Program. information 8:00 - 6:00 Eastern pointOfContact daily https://www1.ncdc.noaa.gov/pub/data/metadata/images/C00840_patmosx.png AVHRR cloud optical depth at the nominal wavelength of 0.65 microns determined from the DCOMP algorithm. PNG 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 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 Satellite product Keyword Thesaurus Title 2018 publication Keyword Thesaurus Edition Keyword Thesaurus Publisher https://geo-ide.noaa.gov/wiki/index.php?title=MD_Keywords HTTPS Web Browser NOAA Environmental Data Management Wiki: MD Keywords Instructions and examples for ISO keywords. information publisher Geographic Region > Global 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 Climate Data Record (CDR) Program 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 AVHRR > Advanced Very High Resolution Radiometer AVHRR-2 > Advanced Very High Resolution Radiometer-2 AVHRR-3 > Advanced Very High Resolution Radiometer-3 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 NOAA-7 > National Oceanic & Atmospheric Administration-7 NOAA-9 > National Oceanic & Atmospheric Administration-9 NOAA-11 > National Oceanic & Atmospheric Administration-11 NOAA-14 > National Oceanic & Atmospheric Administration-14 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 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 DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, 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 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 The quality of the output CDR data is dependent on the quality of the input data. As such, the near real-time data is labeled as an Interim operational CDR (ICDR) or 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. See the Algorithm Theoretical Basis Document for a description of use limitations. otherRestrictions Cite as: Andrew K. Heidinger, Michael J. Foster, Andi Walther, Xuepeng Zhao, and NOAA CDR Program (2014): NOAA Climate Data Record (CDR) of Cloud Properties from AVHRR Pathfinder Atmospheres - Extended (PATMOS-x), Version 5.3. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5348HCK [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. NOAA Climate Data Record (CDR) of Reflectance and Brightness Temperatures from AVHRR Pathfinder Atmospheres - Extended (PATMOS-x), Version 5.3 2014-07-03 publication Version 5.3 National Centers for Environmental Information publisher https://doi.org/10.7289/V56W982J HTTPS Web Browser NCEI landing page for AVHRR Reflectance - PATMOS-x Related dataset landing page. information crossReference project grid eng; USA climatologyMeteorologyAtmosphere 1 -180.0 180.0 -90.0 90.0 ground condition 1981-06-24 patmosx_v05r03 acha_info byte processing information for ACHA (0=no/1=yes) 1:Cloud Height Attempted 2:Bias Correction Employed 3:Ice Cloud Retrieval 4:Local Radiative Center Processing Used 5:Multi-layer Retrieval 6:Lower Cloud Interpolation Used 7:Boundary Layer Inversion Assumed acha_quality byte quality flags for ACHA products 1:Processed (0=no,1=yes) 2:valid Tc retrieval (1=yes,0=no) 3:valid ec retrieval (1=yes,0=no) 4:valid beta retrieval (1=yes,0=no) 5:degraded Tc retrieval (1=yes,0=no) 6:degraded ec retrieval (1=yes,0=no) 7:degraded beta retrieval (1=yes,0=no) bad_pixel_mask byte mask that distinguishes good(0) from bad(1) pixels cld_emiss_acha byte cloud emissivity at the nominal wavelength of 11 microns, determined from the AWG cloud height algorithm - NOAA CDR (convective_cloud_longwave_emissivity) cld_height_acha short cloud height computed using the AWG cloud height algorithm (height_at_cloud_top) cld_height_uncer_acha byte cloud height uncertainty computed using the AWG cloud height algorithm cld_opd_acha byte cloud optical depth at the nominal wavelength of 0.65 microns, determined from ACHA (atmosphere_optical_thickness_due_to_cloud) cld_opd_dcomp short cloud optical depth at the nominal wavelength of 0.65 microns, determined from DCOMP - NOAA CDR (atmosphere_optical_thickness_due_to_cloud) cld_opd_dcomp_unc short uncertainty in the log10 cloud optical depth at the nominal wavelength of 0.65 microns, determined from DCOMP; see attributes for channels used cld_press_acha short cloud-top pressure computed using the AWG cloud height algorithm (air_pressure_at_cloud_top) cld_reff_acha byte effective radius of cloud particles determined from ACHA; see attributes for channels used (effective_radius_of_cloud_condensed_water_particles_at_cloud_top) cld_reff_dcomp short effective radius of cloud particles determined from DCOMP; see attributes for channels used - NOAA CDR (effective_radius_of_cloud_condensed_water_particles_at_cloud_top) cld_reff_dcomp_unc short uncertainty in the log10 effective radius of cloud particle determined from DCOMP; see attributes for channels used cld_temp_acha short cloud-top temperature computed using the AWG cloud height algorithm - NOAA CDR (air_temperature_at_cloud_top) cloud_fraction byte cloud fraction computed over a 3x3 pixel array at the native resolution centered on this pixel (cloud_area_fraction) cloud_fraction_uncertainty byte cloud fraction uncertainty computed over a 3x3 array cloud_mask byte integer classification of the cloud mask including clear=0, probably-clear=1, probably-cloudy=2, cloudy=3 cloud_probability byte probability of a pixel being cloudy from the Bayesian cloud mask cloud_transmission_0_65um_nom byte cloud transmission 0.65 microns nominal from DCOMP cloud_type byte integer classification of the cloud type including clear and aerosol type,0=clear,1=probably clear,2=fog,3=water,4=supercooled water,5=mixed,6=opaque_ice,7=cirrus,8=overlapping,9=overshooting,10=unknown,11=dust,12=smoke cloud_water_path byte integrated total cloud water over whole column dcomp_info short processing flags for DCOMP 1:info flag set ? (0=no,1=yes) 2:land/sea mask (0=land,1=sea) 3:day/night mask (0=Day,1=Night) 4:twilight (65-82 solar zenith) (0=no,1=yes) 5:snow (0=no,1= snow) 6:sea-ice (0=no,1=sea-ice) 7:phase (0=liquid,1=ice) 8:thick_cloud (0=no,1=yes) 9:thin_cloud (0=no,1=yes) dcomp_quality byte quality flags for DCOMP products 1:Processed (0=no,1=yes) 2:valid COD retrieval (0=yes,1=no) 3:valid REF retrieval (0=yes,1=no) 4:degraded COD retrieval (0=no,1=degraded) 5:degraded REF retrieval (0=no,1=degraded) 6:convergency (0=no,1=yes) 7:glint (0=no,1=yes) glint_mask byte glint mask (0=no) (1=yes) land_class byte land classes and values:shallow ocean=0,land=1,coastline=2,shallow inland water=3,ephemeral water=4,deep inland water=5,moderate ocean=6,deep ocean=7 latitude short latitude (latitude) longitude short longitude (longitude) refl_0_65um_nom short top of atmosphere reflectance at the nominal wavelength of 0.65 microns - NOAA CDR (toa_bidirectional_reflectance) refl_0_65um_nom_counts short instrument counts for the nominal 0.65 micron channel refl_0_65um_nom_stddev_3x3 byte standard deviation of the 0.63 micron reflectance computed over a 3x3 pixel array refl_0_86um_nom short top of atmosphere reflectance at the nominal wavelength of 0.86 microns - NOAA CDR (toa_bidirectional_reflectance) refl_0_86um_nom_counts short instrument counts for the nominal 0.86 micron channel refl_1_60um_nom short top of atmosphere reflectance at the nominal wavelength of 1.60 microns - NOAA CDR (toa_bidirectional_reflectance) refl_1_60um_nom_counts short instrument counts for the nominal 1.6 micron channel refl_3_75um_nom short top of atmosphere reflectance at the nominal wavelength of 3.75 microns - NOAA CDR (toa_bidirectional_reflectance) relative_azimuth_angle byte relative azimuth angle in degrees. 0 is the principal plane looking towards sun (relative_sensor_azimuth_angle) scan_element_number int scan element index of the pixel chosen for inclusion in level-2b scan_line_number int scan line number scan_line_time float time for the scan line in fractional hours sensor_zenith_angle byte sensor zenith for each pixel measured in degrees from nadir (sensor_zenith_angle) snow_class byte snow classes and values:no snow/ice=1,sea_ice=2,snow=3 solar_azimuth_angle byte solar azimuth angle in degrees from north, pixel to sun, positive values are clockwise from north (solar_azimuth_angle) solar_zenith_angle byte solar zenith for each pixel measured in degrees away from the sun (0=looking at sun) (solar_zenith_angle) surface_temperature_retrieved byte surface temperature retrieved using atmospherically corrected 11 micron radiance (surface_brightness_temperature) surface_type byte UMD surface type: water=0,evergreen_needle=1,evergreen_broad=2,deciduous_needle=3,deciduous_broad=4,mixed_forest=5,woodlands=6,wooded_grass=7closed_shrubs=8,open_shrubs=9,grasses=10,croplands=11,bare=12,urban=13 (area_type) temp_11_0um_nom short top of atmosphere brightness temperature at the nominal wavelength of 11.0 microns - NOAA CDR (toa_brightness_temperature) temp_11_0um_nom_clear_sky short top of atmosphere brightness temperature modeled assuming clear skies at the nominal wavelength of 11.0 microns (toa_brightness_temperature_assuming_clear_sky) temp_11_0um_nom_stddev_3x3 byte standard deviation of the 11 micron brightness temperature computed over a 3x3 pixel array temp_12_0um_nom short top of atmosphere brightness temperature at the nominal wavelength of 12.0 microns - NOAA CDR (toa_brightness_temperature) temp_3_75um_nom short top of atmosphere brightness temperature at the nominal wavelength of 3.75 microns - NOAA CDR (toa_brightness_temperature) time float seconds since 1970-01-01 00:00:00 (time) NetCDF 4 National Centers for Environmental Information Customer Engagement 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 https://www.ncei.noaa.gov HTTPS Web Browser NOAA National Centers for Environmental Information (NCEI) NCEI home page with information, data access and contact information. information 8:00 - 6:00 Eastern distributor In most cases, electronic downloads of the data are free, however fees may apply for data certifications, copies of analog materials, and data distribution on physical media. https://doi.org/10.7289/V5348HCK HTTPS Landing Page NCEI landing page for this dataset Dataset landing page with general information and access links for the dataset. information https://www.ncei.noaa.gov/access/search/data-search/avhrr-cloud-properties-patmosx HTTPS Data Search Application NCEI Data Search Search the data archive to submit an order via the interface or download files if available. search https://www.ncdc.noaa.gov/cdr/atmospheric/avhrr-cloud-properties-patmos-x HTTPS Information NOAA CDR page Access to the published CDR product, documentation and source code. information https://cimss.ssec.wisc.edu/patmosx/ HTTPS Web Browser CIMSS PATMOS-x project page Project page with dataset information. information https://www.ncei.noaa.gov/data/avhrr-reflectance-cloud-properties-patmos-extended/access/ HTTPS Download NCEI Direct Download Direct download for dataset files. download https://www.ncdc.noaa.gov/has/HAS.FileAppRouter?datasetname=362602&subqueryby=STATION&applname=&outdest=FILE HTTPS Data Search Application NCEI Archive Information Request System (AIRS) Search the data archive and submit an order for the dataset via the interface. order dataset The data were produced by the University of Wisconsin, Madison, and are archived at the NOAA National Centers for Environmental Information (NCEI). For a complete description of the processing steps, see the Algorithm Description Document and Data Flow Diagram. UWI-MAD/SSEC/CIMSS > Cooperative Institute for Meteorological Satellite Studies, Space Science and Engineering Center, University of Wisconsin, Madison processor CDR v05r03 CDR Source Code 2014-06 publication DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce 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://www1.ncdc.noaa.gov/pub/data/sds/cdr/CDRs/AVHRR%20Cloud%20Properties%20-%20PATMOS-x/SourceCode.tar.gz HTTPS Web Browser CDR Source Code 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 2014-06 publication DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce 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://www1.ncdc.noaa.gov/pub/data/sds/cdr/CDRs/AVHRR%20Cloud%20Properties%20-%20PATMOS-x/DataFlowDiagram.pdf HTTPS Web Browser CDR Data Flow Diagram Flowcharts for the CDR product. information 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 dataset Data Stewardship Data Stewardship Maturity Assessment MM-Stew The Data Stewardship Maturity Matrix (DSMM) is a unified framework that defines criteria for each of nine components based on measurable practices, which can be used to apply a progressive, 6-level rating to an individual dataset, representing stewardship maturity stages rated as Not Assessed or Not Available (Level 0), adHoc (Level 1), minimum (Level 2), intermediate (Level 3), advanced (Level 4), and optimal (Level 5). Data Stewardship Maturity Assessment was evaluated by the metadata content editor for the NOAA OneStop project using the Scientific Data Stewardship Maturity Assessment Model Template v4.0. The Scientific Data Stewardship Maturity Assessment Model Template 2016-06-27 publication NCDC-CICS-SMM_0001_Rev.1 v4.0 06/27/2016 doi:10.10.6084/m9.figshare.1211954 Peng, Ge CICS-NC/NCEI author https://doi.org/10.6084/m9.figshare.1211954 HTTPS Web Browser The Scientific Data Stewardship Maturity Assessment Model Template Landing page for quality evaluation procedure. information 2016-06-27T00:00:00 intermediate advanced minimal advanced intermediate advanced intermediate advanced advanced asNeeded Bulk metadata change applied on 2018-11-05. See version control repository history for metadata change details.