MODIS/Terra+Aqua Land Aerosol Optical Depth Daily L2G Global 1km SIN Grid NRT

The Moderate Resolution Imaging Spectroradiometer (MODIS) Near Real Time (NRT) Combined Terra and Aqua Multi-Angle Implementation of Atmospheric Correction (MAIAC) Land Aerosol Optical Depth gridded Level 2 product (MCD19A2N) produced daily at 1 kilometer (km) pixel resolutions. The MCD19A2N product provides the atmospheric properties and view geometry used to calculate the MAIAC Land Surface Bidirectional Reflectance Factor (BRF) or surface reflectance, MCD19A1N product.

The Version 6.1 Level-1B (L1B) products have been improved by undergoing various calibration changes that include: changes to the response-versus-scan angle (RVS) approach that affects reflectance bands for Aqua and Terra MODIS, corrections to adjust for the optical crosstalk in Terra MODIS infrared (IR) bands, and corrections to the Terra MODIS forward look-up table (LUT) update for the period 2012 - 2017. A polarization correction has been applied to the L1B Reflective Solar Bands (RSB).

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated September 1, 2026, 04:21 (UTC)
Created April 1, 2025, 17:49 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 0009d1f2-5440-452d-969a-514493a84828
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/MODIS/MCD19A2N.NRT.061
license https://www.usa.gov/government-works
modified 2026-08-24T22:15:58Z
programCode {026:000}
publisher NASA/GSFC/EOS/ESDIS/LANCE MODIS
resource-type Dataset
source_datajson_identifier true
source_hash 47e74c8c860adaed32c08b94eff7df2eb6e3296d01f1ee37c7268ae11b223b43
source_schema_version 1.1
spatial ["CARTESIAN", [{"NorthBoundingCoordinate": 90, "WestBoundingCoordinate": -180, "EastBoundingCoordinate": 180, "SouthBoundingCoordinate": -90}]]
temporal 2022-08-01/2026-08-24
theme {"Earth Science"}