MCD19A1.061: Land Surface BRF Daily L2G Global 500m and 1km

AI-generated Key Takeaways

The MCD19A1 Version 6.1 data product provides daily Land Surface Bidirectional Reflectance Factor data from MODIS Terra and Aqua at 500 meter and 1 kilometer resolution.
This dataset includes various bands measuring surface reflectance, BRF uncertainty, and quality assurance information, along with angles related to solar and view positions.
The data is available from December 21, 2000, to October 12, 2025, with a daily cadence and is provided by NASA LP DAAC at the USGS EROS Center.
MODIS data acquired through LP DAAC has no restrictions on subsequent use, sale, or redistribution.

Dataset Availability: 2000-12-21T00:00:00Z–2025-10-25T23:30:00Z
Dataset Provider: NASA LP DAAC at the USGS EROS Center

Cadence: 1 Day
Tags: aerosol aod aqua daily global maiac modis nasa satellite-imagery terra usgs

Description

The MCD19A1 Version 6.1 data product is a Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua combined Land Surface Bidirectional Reflectance Factor (BRF) gridded Level 2 product produced daily at 500 meter and 1 kilometer resolution. For more information see the MAIAC user guide.

Bands

Pixel Size
1000 meters

Bands

Name	Min	Max	Scale	Pixel Size	Description
`Sur_refl1`	-100	16000	0.0001	meters	Surface reflectance at 500m for band 1.
`Sur_refl2`	-100	16000	0.0001	meters	Surface reflectance at 500m for band 2.
`Sur_refl3`	-100	16000	0.0001	meters	Surface reflectance at 500m for band 3.
`Sur_refl4`	-100	16000	0.0001	meters	Surface reflectance at 500m for band 4.
`Sur_refl5`	-100	16000	0.0001	meters	Surface reflectance at 500m for band 5.
`Sur_refl6`	-100	16000	0.0001	meters	Surface reflectance at 500m for band 6.
`Sur_refl7`	-100	16000	0.0001	meters	Surface reflectance at 500m for band 7.
`Sur_refl8`	-100	16000	0.0001	meters	Surface reflectance at 1km for band 8.
`Sur_refl9`	-100	16000	0.0001	meters	Surface reflectance at 1km for band 9.
`Sur_refl10`	-100	16000	0.0001	meters	Surface reflectance at 1km for band 10.
`Sur_refl11`	-100	16000	0.0001	meters	Surface reflectance at 1km for band 11.
`Sur_refl12`	-100	16000	0.0001	meters	Surface reflectance at 1km for band 12.
`Sigma_BRFn1`	-100	16000	0.0001	meters	BRFn uncertainty over time at 1km, for band 1
`Sigma_BRFn2`	-100	16000	0.0001	meters	BRFn uncertainty over time at 1km, for band 2
`Status_QA`				meters	QA bits
Bitmask for Status_QA Bits 0-2: Cloud mask 0: Undefined 1: Clear 2: Possibly cloudy (detected by AOD filter) 3: Cloudy (detected by cloud mask algorithm) 5: Cloud shadow 6: Hot spot of fire 7: Water sediments Bits 3-4: Land water snow/ice mask 0: Land 1: Water 2: Snow 3: Ice Bits 5-7: Adjacency mask 0: Normal condition/Clear 1: Adjacent to clouds 2: Surrounded by more than 4 cloudy pixels 3: Adjacent to a single cloudy pixel 4: Adjacent to snow 5: Snow was previously detected in this pixel Bit 8: AOD level 0: AOD is low (<=0.6) 1: AOD is high (> 0.6) or undefined Bits 9-10: AOD Type 0: Background aerosol 1: Smoke 2: Dust Bit 11: BRF retrieved over snow assuming AOD = 0.05 0: no 1: yes Bit 12: Altitude >4.2km (land)/3.5km (water), BRF is retrieved using climatology AOD =0.02 0: no 1: yes Bits 13-15: Surface Change Mask 0: No change 1: Regular change Green up (Relative change in Red and NIR nadir-normalized BRF is more than 5% but less than 15%). 2: Big change Green up (Relative change in Red and NIR nadir-normalized BRF is more than 15%). 3: Regular change Senescence 4: Big change Senescence
`cosSZA`	0	10000	0.0001	meters	Cosine of Solar zenith angle (5 km resulution)
`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)
`SAZ`	-18000	18000	0.01	meters	Solar Azimuth Angle (5 km resolution)
`VAZ`	-18000	18000	0.01	meters	View Azimuth Angle (5 km resolution)
`Glint_Angle`	-18000	18000	0.01	meters	Glint angle (5 km resolution)
`Fv`	-100	100		meters	RTLS volumetric kernel (5 km resolution)
`Fg`	-100	100		meters	RTLS geometric kernel (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

Please visit LP DAAC 'Citing Our Data' page for information on citing LP DAAC datasets.

DOIs

https://doi.org/10.5067/MODIS/MCD19A1.061

Explore with Earth Engine

Code Editor (JavaScript)

var collection = ee.ImageCollection('MODIS/061/MCD19A1_GRANULES')
                     .select('Sur_refl1')
                     .filterDate('2000-01-01', '2000-03-07');

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

Map.addLayer(collection.mean(), band_viz, 'Surface Bidirectional Reflectance Factor');
Map.setCenter(76, 13, 6);

Open in Code Editor

MCD19A1.061: Land Surface BRF Daily L2G Global 500m and 1km

MODIS/061/MCD19A1_GRANULES, aerosol,aod,aqua,daily,global,maiac,modis,nasa,satellite-imagery,terra,usgs

2000-12-21T00:00:00Z/2025-10-25T23:30:00Z

-90 -180 90 180

Google Earth Engine

https://developers.google.com/earth-engine/datasets

MCD19A1.061: Land Surface BRF Daily L2G Global 500m and 1km Stay organized with collections Save and categorize content based on your preferences.

AI-generated Key Takeaways

Description

Bands

Terms of Use

Citations

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

MCD19A1.061: Land Surface BRF Daily L2G Global 500m and 1km