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Climate Data Record (CDR) of AVHRR Daily and Monthly Aerosol Optical Thickness over Global Oceans, Version 1.0 (Version Superseded)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
AVHRR AOT at 630nm channel for January 2005.
*Note: This dataset version has been superseded by a newer version.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
| Distribution Formats |
- netCDF (Version: 4)
- File Specification: NetCDF Climate and Forecast (CF) Metadata Convention (http://cf-pcmdi.llnl.gov/)
- File Compression: http://www.unidata.ucar.edu/software/netcdf/docs/netcdf/
- XML
- NetCDF (Version: 4)
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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
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| 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
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| Time Period |
1981-07-08 to 2009-12-31 |
| Spatial Bounding Box Coordinates |
West: -180.0
East: 180.0
South: -90.0
North: 90.0
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| Spatial Coverage Map |
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| Dataset Information |
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| General Documentation |
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| Associated Resources |
- NCEI Dataset Landing Page for the Current Version
- Study of long-term trend in aerosol optical thickness observed from operational AVHRR satellite instrument
- Long-term trends of zonally averaged aerosol optical thickness observed from operational satellite AVHRR instrument
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| Publication Dates |
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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. |
| Use Limitations |
- *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.*
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| Dataset Citation |
- 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].
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| Cited Authors |
- DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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| Originators |
- DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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| Publishers |
- 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
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| Theme keywords |
Global Change Master Directory (GCMD) Science Keywords- Earth Science > Atmosphere > Aerosols > Aerosol Optical Depth/Thickness
Global Change Master Directory (GCMD) Science Keywords
- Earth Science > Noaa-7 > National Oceanic & Atmospheric Administration-7
- Earth Science > Noaa-9 > National Oceanic & Atmospheric Administration-9
- Earth Science > Noaa-10 > National Oceanic & Atmospheric Administration-10
- Earth Science > Noaa-11 > National Oceanic & Atmospheric Administration-11
- Earth Science > Noaa-12 > National Oceanic & Atmospheric Administration-12
- Earth Science > Noaa-14 > National Oceanic & Atmospheric Administration-14
- Earth Science > Noaa-15 > National Oceanic & Atmospheric Administration-15
- Earth Science > Noaa-16 > National Oceanic & Atmospheric Administration-16
- Earth Science > Noaa-18 > National Oceanic & Atmospheric Administration-18
- Earth Science > Metop-A > Meteorological Operational Satellite - A
Global Change Master Directory (GCMD) Science Keywords
- Earth Science > Avhrr > Advanced Very High Resolution Radiometer
- Earth Science > Avhrr-2 > Advanced Very High Resolution Radiometer-2
- Earth Science > Avhrr-3 > Advanced Very High Resolution Radiometer-3
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| Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords
- 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
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| Place keywords |
Global Change Master Directory (GCMD) Location Keywords- Geographic Region > Global
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| Stratum keywords |
Global Change Master Directory (GCMD) Location Keywords
- Vertical Location > Stratosphere
- Vertical Location > Troposphere
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| Use Constraints |
- 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.
- 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].
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| Access Constraints |
- 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.
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| Fees |
- 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.
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| Lineage information for: dataset |
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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. |
| Lineage information for: repository |
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| Processing Steps |
- 2015-04-22T00:00:00 - 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.
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| Acquisition Information (collection) |
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| Instrument |
- > AVHRR-2 > Advanced Very High Resolution Radiometer-2
- > AVHRR-2 > Advanced Very High Resolution Radiometer-2
- > AVHRR-2 > Advanced Very High Resolution Radiometer-2
- > AVHRR-2 > Advanced Very High Resolution Radiometer-2
- > AVHRR-2 > Advanced Very High Resolution Radiometer-2
- > AVHRR-2 > Advanced Very High Resolution Radiometer-2
- > AVHRR-3 > Advanced Very High Resolution Radiometer-3
- > AVHRR-3 > Advanced Very High Resolution Radiometer-3
- > AVHRR-3 > Advanced Very High Resolution Radiometer-3
- > AVHRR-3 > Advanced Very High Resolution Radiometer-3
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| Platform |
- 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-18 > National Oceanic & Atmospheric Administration-18
- MetOp-A > Meteorological Operational Satellite - A
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Last Modified: 2023-09-13
For questions about the information on this page, please email:
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