Skip to main content

Description

The MCD19A1CMGO Version 6.1 data product is a Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua combined Multi-Angle Implementation of Atmospheric Correction (MAIAC) Surface Reflectance Level 3 (Bands 8-12) product produced daily in a 0.05 degree (5,600 meters at the equator) Climate Modeling Grid (CMG). The MCD19A1CMGO product is corrected for atmospheric gases and aerosols using a new MAIAC algorithm that is based on a time series analysis and a combination of pixel- and image-based processing. The MODIS MAIAC products provide an estimate of the surface spectral reflectance, also referred to as Bidirectional Reflectance Factor (BRF), as it would be measured at ground-level in the absence of atmospheric scattering or absorption. The Surface Reflectance dataset includes BRF, BRF normalized to a fixed geometry of solar zenith angle at 45° and nadir view, and Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) normalized to the nadir view and local sun angle at 1:30 pm.

The MCD19A1CMGO MAIAC Surface Reflectance product for ocean bands includes 19 Science Dataset (SDS) layers: BRF for bands 8-12, BRF normalized to a fixed geometry for bands 8-12, NBAR for bands 8-12, Quality Assessment (QA) bits, cosine of solar zenith angle, cosine of view zenith angle, and relative azimuth angle. A low-resolution browse is also included.

Known Issues

Version Description

Collection Version 6.1 Processing and Reprocessing

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
C2565807729-LPCLOUD
Data State
ACTIVE
Processing Level
3
Published
Updated
Science Keywords
Reflectance

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 Surface Reflectance (Bands 8-12) from MAIAC, Daily L3 Global 0.05Deg CMG V061 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MCD19A1CMGO.061 Date Accessed: 2025-10-22

File Naming Convention

MCD19A1CMGO.A2025218.061.2025219193209.hdf

The file name begins with the Product Short Name (MCD19A1CMGO) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2025218), the Version of the data collection (061), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2025219193209), and the Data Format (hdf).

Documents

Publications Citing This Dataset

Filters
Title Year Author
Retrieval of UV-visible aerosol absorption using AERONET and OMI-MODIS synergy—Spatial and temporal variability across major aerosol environments Kayetha, V.
Exploratory analysis of carbonaceous PM2.5 species in urban environments—Relationship with meteorological variables and satellite data Amarillo, A.
Small anomalies in dry-season greenness and chlorophyll fluorescence for Amazon moist tropical forests during El Niño and La Niña Doughty, R.
Improved 1-km-resolution hourly estimates of aerosol optical depth using conditional generative adversarial networks Zhang, L.
Spatial covariation between solar-induced fluorescence and vegetation indices from Arctic-Boreal landscapes Maguire, A. J.
Importance of the legacy effect for assessing spatiotemporal correspondence between interannual tree-ring width and remote sensing products in the Sierra Nevada Wong, C. Y. S.
Adjustments to sif aid the interpretation of drought responses at the caatinga of Northeast Brazil Bontempo, E.
First provisional land surface reflectance product from geostationary satellite Himawari-8 AHI Li, S.
Changes in leaf functional traits of rainforest canopy trees associated with an El Nino event in Borneo Nunes, M. H.
SHOWING 9 OF 9

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
BRFn_B08 Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band08 N/A int16 -28672 -28672 to 16000 0.0001
BRFn_B09 Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band09 N/A int16 -28672 -28672 to 16000 0.0001
BRFn_B10 Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band10 N/A int16 -28672 -28672 to 16000 0.0001
BRFn_B11 Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band11 N/A int16 -28672 -28672 to 16000 0.0001
BRFn_B12 Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band12 N/A int16 -28672 -28672 to 16000 0.0001
BRF_B08 Bidirectional Reflectance Factor, Band08 N/A int16 -28672 -28672 to 16000 0.0001
BRF_B09 Bidirectional Reflectance Factor, Band09 N/A int16 -28672 -28672 to 16000 0.0001
BRF_B10 Bidirectional Reflectance Factor, Band10 N/A int16 -28672 -28672 to 16000 0.0001
BRF_B11 Bidirectional Reflectance Factor, Band11 N/A int16 -28672 -28672 to 16000 0.0001
BRF_B12 Bidirectional Reflectance Factor, Band12 N/A int16 -28672 -28672 to 16000 0.0001
cSZA Cosine of Solar zenith angle N/A int16 -28672 -28672 to 10000 0.0001
cVZA Cosine of Solar zenith angle N/A int16 -28672 -28672 to 10000 0.0001
NBAR_B08 Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band08 N/A int16 -28672 -28672 to 16000 0.0001
NBAR_B09 Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band09 N/A int16 -28672 -28672 to 16000 0.0001
NBAR_B10 Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band10 N/A int16 -28672 -28672 to 16000 0.0001
NBAR_B11 Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band11 N/A int16 -28672 -28672 to 16000 0.0001
NBAR_B12 Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band12 N/A int16 -28672 -28672 to 16000 0.0001
QA QA bits N/A uint8 255 255 to 3 N/A
Rel_AZ Relative azimuth angle N/A int16 -28672 -28672 to 18000 0.01
You're viewing 19 of 19