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VIIRS/SNPP Dark Target Aerosol L2 6-Min Swath 6 km

Metadata Updated: June 25, 2024

The VIIRS/SNPP Dark Target Aerosol L2 6-Min Swath 6 km product provides satellite-derived measurements of Aerosol Optical Thickness (AOT) and their properties over land and ocean, and spectral AOT and their size parameters over oceans every 6 minutes, globally. The Suomi National Polar-orbiting Partnership (SNPP) Visible Infrared Imaging Radiometer Suite (VIIRS) incarnation of the dark target (DT) aerosol product is based on the same DT algorithm that was developed and used to derive products from the Terra and Aqua mission’s MODIS instruments. Two separate and distinct DT algorithms exist. One helps retrieve aerosol information over ocean (dark in visible and longer wavelengths), while the second aids retrievals over vegetated/dark-soiled land (dark in the visible).

This orbit-level product (Short-name: AERDT_L2_VIIRS_SNPP) has an at-nadir resolution of 6 km x 6 km, and progressively increases away from nadir given the sensor’s scanning geometry and Earth’s curvature. Viewed differently, this product’s resolution accommodates 8 x 8 native VIIRS moderate-resolution (M-band) pixels that nominally have ~750 m horizontal pixel size. Hence, the L2 DT AOT data product incorporates 64 (750 m) pixels over a 6-minute acquisition.

In contrast to collection 1 of this product, this collection 1.1 uses bowtie-restored pixels that are used for both cloud masking and for performing some retrievals using the restored pixels as well.

For more information consult LAADS product description page at:

Or, Dark Target aerosol team Page at:

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


Metadata Created Date November 12, 2020
Metadata Updated Date June 25, 2024

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date June 25, 2024
Publisher Not provided
Identifier C1688453112-LAADS
Data First Published 2020-07-18
Language en-US
Data Last Modified 2024-06-17
Category Suomi-NPP, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Citation NASA VIIRS Atmosphere SIPS. 2020-12-15. VIIRS/SNPP Dark Target Aerosol L2 6-Min Swath 6 km. Version 1.1. MODAPS at NASA/GSFC. Archived by National Aeronautics and Space Administration, U.S. Government, L1 and Atmosphere Archive and Distribution System (LAADS).
Creator NASA VIIRS Atmosphere SIPS
Harvest Object Id ce03bbdf-b4ed-4452-9485-0e72f088b225
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Metadata Type geospatial
Old Spatial -180.0 -90.0 180.0 90.0
Program Code 026:001
Release Place MODAPS at NASA/GSFC
Source Datajson Identifier True
Source Hash 4cdf4a2faeeefa119ae9d397c27aca11ff646bd6825ce5d7fafeb614c84e2dd0
Source Schema Version 1.1
Temporal 2012-03-01T00:36:00Z/2024-06-24T00:00:00Z

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