gov.noaa.ncdc:C00802 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 2026-07-16T18:30:14 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Climate Data Record (CDR) of AVHRR Daily and Monthly Aerosol Optical Thickness over Global Oceans, Version 1.0 (Version Superseded) Aerosol Optical Thickness Over Oceans CDR AVHRR AOT 2011-07-08 publication Version 1.0 NCEI DSI 3627_01 gov.noaa.ncdc:C00802 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce publisher 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 https://www.ncdc.noaa.gov/ HTTPS Information NOAA Climate Data Record Program Information on the NOAA CDR Program and data. information 8:00 - 6:00 Eastern publisher Zhao, T. X.-P. DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce author I. Laszlo DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce author W. Guo author A. Heidinger author C. Cao author A. Jelenak author D. Tarpley author J. Sullivan author NOAA CDR Program DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce author imageDigital *Note: This dataset version has been superseded by a newer version. It is highly recommended that users access the current version. Users should only use this version for special cases, such as reproducing studies that used this version.* This NOAA Climate Data Record (CDR) of aerosol optical thickness (AOT) at 0.63 micron is retrieved from operational AVHRR orbital pixel level observations in the Level-1B Global Area Coverage (GAC) dataset. The retrieval is performed for selected spatial (8-km) and temporal (1 time per day) resolution in cloud free condition during daytime over global oceans. The final product is mapped into 0.5 by 0.5 degree equal area grid (total 165018 grids over the globe). Due to the relatively large uncertainties associated with surface reflectance over water glint area and land surface as well as limited AVHRR retrieval channels, the current algorithm only performs retrieval over non-glint water surface (specifically at the anti-solar side of the orbit and viewing angle is larger than 40 degree away from the specular ray). The retrieval products include a daily and monthly mean product and cover the period from 1981 to 2009. Daily and monthly mean data files are grouped by ascending and descending node by satellite. To develop and implement a robust, sustainable, and scientifically defensible approach to producing and preserving an aerosol optical thickness climate record from satellite data. completed superseded historicalArchive NOAA Climate Data Record Program Office DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 (828) 271-4800 151 Patton Avenue Asheville NC 28801 USA avhrr_aot_contacts@noaa.gov pointOfContact notPlanned https://www.ncei.noaa.gov/pub/data/metadata/images/AVHRR_AOT_January_2005.png AVHRR AOT at 630nm channel for January 2005. PNG Earth Science > Atmosphere > Aerosols > Aerosol Optical Depth/Thickness 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 Atmospheric - Composition - Aerosol Properties theme Global Climate Observing System (GCOS) Essential Climate Variables (ECVs) 2017 publication Release 2017 World Meteorological Organization, United Nations https://public.wmo.int/en/programmes/global-climate-observing-system/essential-climate-variables HTTP Information GCOS Essential Climate Variables Overview of the GCOS Essential Climate Variables. information custodian NOAA Climate Data Record (CDR) Program project Keyword Thesaurus Title Satellite product Keyword Thesaurus Title Geographic Region > Global Ocean 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 AVHRR > Advanced Very High Resolution Radiometer AVHRR-3 > Advanced Very High Resolution Radiometer-3 AVHRR-2 > Advanced Very High Resolution Radiometer-2 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-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 POES > NOAA Polar Orbiting Environmental Satellites 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/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce 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 01B-04 project NCEI Configuration Item ID *Note: This dataset version has been superseded by a newer version. It is highly recommended that users access the current version. Users should only use this version for special cases, such as reproducing studies that used this version.* For a complete description of use limitations see the Algorithm Theoretical Basis Document. otherRestrictions otherRestrictions Cite as: Zhao, T. X.-P., I. Laszlo, W. Guo, A. Heidinger, C. Cao, A. Jelenak, D. Tarpley, J. Sullivan, and NOAA CDR Program (2011): NOAA Climate Data Record (CDR) of AVHRR Daily and Monthly Aerosol Optical Thickness over Global Oceans, Version 1.0. [indicate subset used]. NOAA National Centers for Environmental Information. doi:TBD [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. NCEI Dataset Landing Page for the Current Version https://doi.org/10.25921/w3zj-4y48 Landing Page NCEI Dataset Landing Page for the Current Version Landing page for the Current Version. information crossReference collection Study of long-term trend in aerosol optical thickness observed from operational AVHRR satellite instrument Journal of Geophysical Research: Atmospheres publisher https://doi.org/10.1029/2007JD009061 HTTPS Web Browser Study of long-term trend in aerosol optical thickness observed from operational AVHRR satellite instrument Journal of Geophysical Research. doi:10.1029/2007JD009061 information Journal of Geophysical Research. DOI: 10.1002/jgrd.50278 largerWorkCitation collection Long-term trends of zonally averaged aerosol optical thickness observed from operational satellite AVHRR instrument Meteorological Applications publisher https://doi.org/10.1002/met.235 HTTPS Web Browser Long-term trends of zonally averaged aerosol optical thickness observed from operational satellite AVHRR instrument Meteorological Applications. doi:10.1002/met.235 information Dataset Papers in Geosciences. DOI: 10.7167/2013/140791 largerWorkCitation collection textTable eng; USA climatologyMeteorologyAtmosphere 1 -180.0 180.0 -90.0 90.0 ground condition 1981-07-01 2009-12-31 time long time (time) aot1 float NOAA Climate Data Record (CDR) of monthly aerosol optical thickness over global oceans derived from PATMOS-x AVHRR channel 1 (0.63 micron) level2b orbital clear-sky radiance (atmosphere_optical_thickness_due_to_aerosol) latitude float (latitude) longitude float (longitude) time long time (time) aot1 float NOAA Climate Data Record (CDR) of daily aerosol optical thickness over global oceans derived from PATMOS-x AVHRR channel 1 (0.63 micron) level2b orbital clear-sky radiance (atmosphere_optical_thickness_due_to_ambient_aerosol) latitude float (latitude) longitude float (longitude) 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. XML NetCDF 4 https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc:C00802/html HTTPS Landing Page NCEI Dataset Landing Page Landing page for the dataset. information https://www.ncei.noaa.gov/products/climate-data-records HTTPS Web Browser Operational Climate Data Records in the NOAA CDR Program Access to the published CDR data, source code, and documentation information https://www.ncei.noaa.gov/contact HTTPS Web Browser Contact NCEI Contact NCEI for more information and to request access to the archived data. Requests are subject to NCEI order fulfillment constraints. offlineAccess dataset For more information, see associated processing documentation. processor 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 2023-06-23. See version control repository history for metadata change details.