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Description

The MCD19A2CMG Version 6.1 data product is a Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua combined Multi-Angle Implementation of Atmospheric Correction (MAIAC) Land Aerosol Optical Depth (AOD) and Water Vapor Level 3 product produced daily in a 0.05 degree (5,600 meters at the equator) Climate Modeling Grid (CMG). The MCD19A2CMG product provides the atmospheric properties and view geometry used to calculate the MAIAC Surface Reflectance data products (MCD19A1CMGL and MCD19A1CMGO).

The MCD19A2CMG AOD data product contains the following Science Dataset (SDS) layers: blue band AOD at 0.47 µm, green band AOD at 0.55 µm, AOD uncertainty, column water vapor for Terra, column water vapor for Aqua, average cloud fraction, available AOD, satellite overpass times, line and sample number, offset, and number of AOD records. A low-resolution browse image is also included showing AOD of the blue band at 0.47 µm created using a composite of all available orbits.

Known Issues

Product Summary

Platforms
Terra,
Aqua
Instruments
MODIS
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Spatial Resolution
5600 Meters x 5600 Meters
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2000-02-24 to Present
Temporal Resolution
1 Day
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC)
MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/MODAPS)
Concept ID
c2565807733-lpcloud
Data State
ACTIVE
Processing Level
3
Published
Updated

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Lyapustin, A. (2023). MODIS/Terra+Aqua AOD and Water Vapor from MAIAC, Daily L3 Global 0.05Deg CMG V061 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MCD19A2CMG.061 Date Accessed: 2025-08-30

Data Center Citation

Alexei Lyapustin. 2023. MODIS/Terra+Aqua AOD and Water Vapor from MAIAC, Daily L3 Global 0.05Deg CMG V061. Sioux Falls, South Dakota, USA: NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MCD19A2CMG.061.

Documents

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Publications Citing This Dataset

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Title Year Author
Characteristics of the severe March 2021 Gobi Desert dust storm and its impact on air pollution in China Filonchyk, M.
Temporal and spatial distribution mapping of particulate matter in southwest of Iran using remote sensing, GIS, and statistical techniques Soleimany, A.
Vegetation activity enhanced in India during the COVID-19 lockdowns—Evidence from satellite data Ranjan, A. K.
Potential assessment of photovoltaic power generation in China Qiu, T.
Hourly mapping of surface air temperature by blending geostationary datasets from the two-satellite system of GOES-R series Zhang, Z.
Climatological characteristics and aerosol loading trends from 2001 to 2020 based on MODIS MAIAC data for Tianjin, North China Plain Wu, Z.
Impact of lockdown and crop stubble burning on air quality of India—A case study from wheat-growing region Mohite, J.
Deterioration of air quality associated with the 2020 US wildfires Filonchyk, M.
Establishment of aerosol optical depth dataset in the Sichuan Basin by the random forest approach Jiang, M.
Characterizing aerosols during forest fires over Uttarakhand Region in India using multi-satellite remote sensing data Verma, S.
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