NOAA Climate Data Record (CDR) of AVHRR Daily and Monthly Aerosol Optical Thickness over Global Oceans, Version 1.0 (Version Superseded)
AVHRR Aerosol Optical Thickness; AVHRR AOT
*Note: This dataset version has been superseded by a newer version.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.
- 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].
- NCEI DSI 3627_01
- gov.noaa.ncdc:C00802
C00802
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | 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 avhrr_aot_contacts@noaa.gov |
Time Period | 1981-07-08 to 2009-12-31 |
Spatial Bounding Box Coordinates |
N: 90.0
S: -90.0
E: 180.0
W: -180.0
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Edition | Version 1.0 |
Data Presentation Form | Digital image
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Dataset Progress Status | Complete - production of the data has been completed
Superseded - replaced by new Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | Not planned |
Purpose | To develop and implement a robust, sustainable, and scientifically defensible approach to producing and preserving an aerosol optical thickness climate record from satellite data. |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Place keywords | Global Change Master Directory (GCMD) Location Keywords
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Stratum keywords | Global Change Master Directory (GCMD) Location Keywords
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Lineage Statement | Version 1 has been superseded by a newer version. Please see Version 2 of this dataset for more information. |
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Last Modified: 2023-09-13
For questions about the information on this page, please email: ncei.info@noaa.gov