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MODIS/Terra+Aqua L3 Value-added Aerosol Optical Depth - NRT

Metadata Updated: December 7, 2023

MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with its 2330 km viewing swath width provides almost daily global coverage. It acquires data in 36 high spectral resolution bands between 0.415 to 14.235 micron with spatial resolutions of 250m(2 bands), 500m(5 bands),and 1000m (29 bands). MODIS sensor counts, calibrated radiances, geolocation products and all derived geophysical atmospheric and ocean products are archived at various DAACs and has been made available to public since April 2000.

The shortname for this level-3 MODIS aerosol product is MCDAODHD. The Naval Research Laboratory and the University of North Dakota developed this value-added aerosol optical depth dataset based on MODIS Level 2 aerosol products. MCDAODHD is a gridded product and is specifically designed for quantitative applications including data assimilation and model validation. It is available through LANCE-MODIS. It offers several enhancements over the MODIS Level 2 data on which it is based. These enhancements include stringent filtering to reduce outliers, eliminate cloud contamination, and exclude conditions where aerosol detection is likely to be inaccurate; reduction of systematic biases over land and ocean by empirical corrections; reduction of random variation in AOD values by spatial averaging; quantitative estimation of uncertainty for each AOD data point.

The MxDAODHD granules are produced every six hours, and time-stamped 00:00, 06:00, 12:00, and 18:00 (all times UTC). Each granule includes MODIS observations from +/-3 hours from the timestamp (e.g. 12:00 product includes MODIS data from 09:00-15:00 UTC). Production is initiated as soon as the Level 2 inputs become available in the LANCE system.

See the LANCE-MODIS page for more dataset information:

https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/modis-nrt

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

References

https://doi.org/10.5194/amt-4-379-2011

Dates

Metadata Created Date November 12, 2020
Metadata Updated Date December 7, 2023

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date December 7, 2023
Publisher NASA/GSFC/EOS/ESDIS/LANCEMODIS
Maintainer
Identifier C1426395436-LANCEMODIS
Data First Published 2017-10-10
Language en-US
Data Last Modified 2023-07-20
Category DODS, EOSDIS, ESIP, TERRA, AQUA, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation LANCEMODIS. MODIS/Terra+Aqua Near Real Time value-added Aerosol Optical Depth Product. Version 6.1NRT. Archived by National Aeronautics and Space Administration, U.S. Government, NASA/GSFC/EOS/ESDIS/LANCEMODIS. https://doi.org/10.5067/MODIS/MCDAODHD.NRT.061. https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/modis-nrt.
Creator LANCEMODIS
Harvest Object Id e523c8b8-9a62-4ba3-8dd0-6232f6dba787
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.5067/MODIS/MCDAODHD.NRT.061
Metadata Type geospatial
Old Spatial -180.0 -90.0 180.0 90.0
Program Code 026:001
Related Documents https://doi.org/10.5194/amt-4-379-2011
Source Datajson Identifier True
Source Hash c8bca2d7d0c331fe2678963f097b1b6b620f5494bb835dd37f06143831b0f24e
Source Schema Version 1.1
Spatial
Temporal 2017-10-11T00:00:00Z/2023-07-24T00:00:00Z

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