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NOAA Climate Data Record (CDR) of AVHRR Daily and Monthly Aerosol Optical Thickness over Global Oceans, Version 1.0 (Version Superseded)

Published by DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 06:36 AM | Dataset Last Updated: July 08, 2011 at 12:00 AM
*Note: This dataset version has been superseded by a newer version.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.

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  • NCEI Dataset Landing Page

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  • Operational Climate Data Records in the NOAA CDR Program

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  • Contact NCEI

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  • NCEI Dataset Landing Page for the Current Version

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  • Study of long-term trend in aerosol optical thickness observed from operational AVHRR satellite instrument

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  • Long-term trends of zonally averaged aerosol optical thickness observed from operational satellite AVHRR instrument

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  • Global Change Master Directory (GCMD) Keywords

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  • GCOS Essential Climate Variables

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  • NOAA Climate Data Record Program

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Earth Science > Atmosphere > Aerosols > Aerosol Optical Depth/Thickness Atmospheric - Composition - Aerosol Properties NOAA Climate Data Record (CDR) Program Satellite Geographic Region > Global Ocean AVHRR > Advanced Very High Resolution Radiometer AVHRR-3 > Advanced Very High Resolution Radiometer-3 AVHRR-2 > Advanced Very High Resolution Radiometer-2

Complete Metadata
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describedByType application/octet-steam
description *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.
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/aim/iso/xml/C00802.xml
isPartOf Study of long-term trend in aerosol optical thickness observed from operational AVHRR satellite instrument
issued 2011-07-08T00:00:00.000+00:00
keyword 
[
  "Earth Science > Atmosphere > Aerosols > Aerosol Optical Depth/Thickness",
  "Atmospheric - Composition - Aerosol Properties",
  "NOAA Climate Data Record (CDR) Program",
  "Satellite",
  "Geographic Region > Global Ocean",
  "AVHRR > Advanced Very High Resolution Radiometer",
  "AVHRR-3 > Advanced Very High Resolution Radiometer-3",
  "AVHRR-2 > Advanced Very High Resolution Radiometer-2",
  "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",
  "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",
  "01B-04"
]
landingPage https://www.ncdc.noaa.gov/
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2011-07-08T00:00:00.000+00:00
publisher 
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  "name": "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
  "@type": "org:Organization"
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references 
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  "https://doi.org/10.25921/w3zj-4y48",
  "https://doi.org/10.1029/2007JD009061",
  "https://doi.org/10.1002/met.235"
]
rights otherRestrictions
spatial 180.0,-90.0,-180.0,90.0
temporal 1981-07-01T00:00:00+00:00/2009-12-31T00:00:00+00:00
theme 
[
  "geospatial"
]
title NOAA Climate Data Record (CDR) of AVHRR Daily and Monthly Aerosol Optical Thickness over Global Oceans, Version 1.0 (Version Superseded)

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