![MODIS/061/MCD19A1_GRANULES](https://developers.google.com/earth-engine/datasets/images/MODIS/MODIS_061_MCD19A1_GRANULES_sample.png) Dataset Availability : 2000-12-21T00:00:00Z--2026-11-12T23:55:00Z Dataset Producer : [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MCD19A1.061) Cadence : 1 Day Tags : [aerosol](https://developers.google.com/earth-engine/datasets/tags/aerosol.md.txt) [aod](https://developers.google.com/earth-engine/datasets/tags/aod.md.txt) [aqua](https://developers.google.com/earth-engine/datasets/tags/aqua.md.txt) [daily](https://developers.google.com/earth-engine/datasets/tags/daily.md.txt) [global](https://developers.google.com/earth-engine/datasets/tags/global.md.txt) [maiac](https://developers.google.com/earth-engine/datasets/tags/maiac.md.txt) [modis](https://developers.google.com/earth-engine/datasets/tags/modis.md.txt) [nasa](https://developers.google.com/earth-engine/datasets/tags/nasa.md.txt) [satellite-imagery](https://developers.google.com/earth-engine/datasets/tags/satellite-imagery.md.txt) [terra](https://developers.google.com/earth-engine/datasets/tags/terra.md.txt) [usgs](https://developers.google.com/earth-engine/datasets/tags/usgs.md.txt) #### 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](https://lpdaac.usgs.gov/documents/1500/MCD19_User_Guide_V61.pdf). ### Bands **Bands** Pixel size: varies | Name | Min | Max | Scale | Pixel Size | Description | |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| | `Sur_refl1` | -100 | 16000 | 0.0001 | 500 meters | Surface reflectance at 500m for band 1. | | `Sur_refl2` | -100 | 16000 | 0.0001 | 500 meters | Surface reflectance at 500m for band 2. | | `Sur_refl3` | -100 | 16000 | 0.0001 | 500 meters | Surface reflectance at 500m for band 3. | | `Sur_refl4` | -100 | 16000 | 0.0001 | 500 meters | Surface reflectance at 500m for band 4. | | `Sur_refl5` | -100 | 16000 | 0.0001 | 500 meters | Surface reflectance at 500m for band 5. | | `Sur_refl6` | -100 | 16000 | 0.0001 | 500 meters | Surface reflectance at 500m for band 6. | | `Sur_refl7` | -100 | 16000 | 0.0001 | 500 meters | Surface reflectance at 500m for band 7. | | `Sur_refl8` | -100 | 16000 | 0.0001 | 1000 meters | Surface reflectance at 1km for band 8. | | `Sur_refl9` | -100 | 16000 | 0.0001 | 1000 meters | Surface reflectance at 1km for band 9. | | `Sur_refl10` | -100 | 16000 | 0.0001 | 1000 meters | Surface reflectance at 1km for band 10. | | `Sur_refl11` | -100 | 16000 | 0.0001 | 1000 meters | Surface reflectance at 1km for band 11. | | `Sur_refl12` | -100 | 16000 | 0.0001 | 1000 meters | Surface reflectance at 1km for band 12. | | `Sigma_BRFn1` | -100 | 16000 | 0.0001 | 1000 meters | BRFn uncertainty over time at 1km, for band 1 | | `Sigma_BRFn2` | -100 | 16000 | 0.0001 | 1000 meters | BRFn uncertainty over time at 1km, for band 2 | | `Status_QA` | | | | 1000 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 | 5000 meters | Cosine of Solar zenith angle (5 km resolution) | | `cosVZA` | 0 | 10000 | 0.0001 | 5000 meters | Cosine view zenith angle (5 km resolution) | | `RelAZ` | -18000 | 18000 | 0.01 | 5000 meters | Relative azimuth angle (5 km resolution) | | `Scattering_Angle` | -18000 | 18000 | 0.01 | 5000 meters | Scattering angle (5 km resolution) | | `SAZ` | -18000 | 18000 | 0.01 | 5000 meters | Solar Azimuth Angle (5 km resolution) | | `VAZ` | -18000 | 18000 | 0.01 | 5000 meters | View Azimuth Angle (5 km resolution) | | `Glint_Angle` | -18000 | 18000 | 0.01 | 5000 meters | Glint angle (5 km resolution) | | `Fv` | -100 | 100 | | 5000 meters | RTLS volumetric kernel (5 km resolution) | | `Fg` | -100 | 100 | | 5000 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 Citations: - Please visit [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data) for information on citing LP DAAC datasets. ### DOIs - ### Explore with Earth Engine > [!NOTE] > **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine) ### Code Editor (JavaScript) ```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](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_061_MCD19A1_GRANULES) [MCD19A1.061: Land Surface BRF Daily L2G Global 500m and 1km](https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MCD19A1_GRANULES.md.txt) 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. MODIS/061/MCD19A1_GRANULES, aerosol,aod,aqua,daily,global,maiac,modis,nasa,satellite-imagery,terra,usgs 2000-12-21T00:00:00Z/2026-11-12T23:55:00Z -90 -180 90 180 Google Earth Engine https://developers.google.com/earth-engine/datasets - [https://doi.org/10.5067/MODIS/MCD19A1.061](https://doi.org/https://doi.org/10.5067/MODIS/MCD19A1.061) - [https://doi.org/10.5067/MODIS/MCD19A1.061](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MCD19A1_GRANULES)