MCD19A2.061: Terra & Aqua MAIAC Land Aerosol Optical Depth Daily 1km

  • The MCD19A2 V6.1 data product provides daily 1 km resolution land aerosol optical depth data from MODIS Terra and Aqua.

  • The dataset is available from February 24, 2000, to October 12, 2025, and is provided by NASA LP DAAC at the USGS EROS Center.

  • Key bands in the dataset include Aerosol Optical Depth at 0.47 μm and 0.55 μm, AOD Uncertainty, Fine Mode Fraction, and Column Water Vapor.

  • MODIS data and products from LP DAAC have no restrictions on subsequent use, sale, or redistribution.

  • The dataset can be explored and analyzed using the Google Earth Engine platform.
MODIS/061/MCD19A2_GRANULES
Dataset Availability
2000-02-24T00:00:00Z–2025-10-25T23:30:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("MODIS/061/MCD19A2_GRANULES")
Cadence
1 Day
Tags
aerosol aod aqua atmosphere daily global maiac modis nasa terra usgs
mcd19a2

Description

The MCD19A2 V6.1 data product is a MODIS Terra and Aqua combined Multi-angle Implementation of Atmospheric Correction (MAIAC) Land Aerosol Optical Depth (AOD) gridded Level 2 product produced daily at 1 km resolution. For more information see the MAIAC user guide.

NOTE: This product has been released with the caveat that the reprocessing for the full mission is expected to continue through summer 2023.

Bands

Pixel Size
1000 meters

Bands

Name Units Min Max Scale Pixel Size Description
Optical_Depth_047 -100 8000 0.001 meters

Aerosol optical depth over land retrieved in the MODIS Blue band (0.47 μm). AOD is not received at high altitude (greater than 4.2 km) except when smoke or dust is detected; rather, we report a static value of 0.02 used for atmospheric correction.
Optical_Depth_055 -100 8000 0.001 meters

Aerosol optical depth over land retrieved in the MODIS Green band (0.55 μm).
AOD_Uncertainty 0 30000 0.0001 meters

AOD uncertainty based on blue-band surface brightness (reflectance)
FineModeFraction 0 1000 meters

Fine mode fraction for ocean and large inland lakes
Column_WV cm 0 30000 0.001 meters

Column water vapor over land, retrieved from MODIS near-IR bands at 0.94 μm. When reported for cloudy pixels, it represents water vapor above the cloud.
AOD_QA meters

AOD QA
Injection_Height m 0 10000 meters

Smoke injection height
AngstromExp_470-780 0.0001 meters

Angstrom exponent 470-780nm over the ocean
cosSZA 0 10000 0.0001 meters

Cosine of solar zenith angle (5 km resolution)
cosVZA 0 10000 0.0001 meters

Cosine view zenith angle (5 km resolution)
RelAZ -18000 18000 0.01 meters

Relative azimuth angle (5 km resolution)
Scattering_Angle -18000 18000 0.01 meters

Scattering angle (5 km resolution)
Glint_Angle -18000 18000 0.01 meters

Glint angle (5 km resolution)

Terms of Use

Terms of Use

MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.

Citations

Citations:

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

var collection = ee.ImageCollection('MODIS/061/MCD19A2_GRANULES')
                     .select('Optical_Depth_047')
                     .filterDate('2023-01-01', '2023-01-15');

var band_viz = {
  min: 0,
  max: 1100,
  palette: ['black', 'blue', 'purple', 'cyan', 'green', 'yellow', 'red']
};

Map.addLayer(collection.mean(), band_viz, 'Optical Depth 047');
Map.setCenter(76, 13, 6);
Open in Code Editor
The MCD19A2 V6.1 data product is a MODIS Terra and Aqua combined Multi-angle Implementation of Atmospheric Correction (MAIAC) Land Aerosol Optical Depth (AOD) gridded Level 2 product produced daily at 1 km resolution. For more information see the MAIAC user guide. NOTE: This product has been released with the caveat …
MODIS/061/MCD19A2_GRANULES, aerosol,aod,aqua,atmosphere,daily,global,maiac,modis,nasa,terra,usgs
2000-02-24T00:00:00Z/2025-10-25T23:30:00Z
-90 -180 90 180
Google Earth Engine