![MODIS/061/MOD17A2H](https://developers.google.com/earth-engine/datasets/images/MODIS/MODIS_061_MOD17A2H_sample.png) Dataset Availability : 2021-01-01T00:00:00Z--2026-11-01T00:00:00Z Dataset Producer : [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MOD17A2H.061) Cadence : 8 Days Tags : [8-day](https://developers.google.com/earth-engine/datasets/tags/8-day.md.txt) [global](https://developers.google.com/earth-engine/datasets/tags/global.md.txt) [gpp](https://developers.google.com/earth-engine/datasets/tags/gpp.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) [photosynthesis](https://developers.google.com/earth-engine/datasets/tags/photosynthesis.md.txt) [plant-productivity](https://developers.google.com/earth-engine/datasets/tags/plant-productivity.md.txt) [productivity](https://developers.google.com/earth-engine/datasets/tags/productivity.md.txt) [psn](https://developers.google.com/earth-engine/datasets/tags/psn.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) mod17a2 #### Description The MOD17A2H V6.1 Gross Primary Productivity (GPP) product is a cumulative 8-day composite with a 500m pixel size. The product is based on the radiation-use efficiency concept and can be potentially used as inputs to data models to calculate terrestrial energy, carbon, water cycle processes, and biogeochemistry of vegetation. Documentation: - [User's Guide](https://lpdaac.usgs.gov/documents/972/MOD17_User_Guide_V61.pdf) - [Algorithm Theoretical Basis Document (ATBD)](https://lpdaac.usgs.gov/documents/95/MOD17_ATBD.pdf) - [General Documentation](https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MOD17A2H) ### Bands **Bands** Pixel size: 500 meters (all bands) | Name | Units | Min | Max | Scale | Pixel Size | Description | |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| | `Gpp` | kg\*C/m\^2 | 0 | 3000 | 0.0001 | 500 meters | Gross primary production | | `PsnNet` | kg\*C/m\^2 | -3000 | 3000 | 0.0001 | 500 meters | Net photosynthesis; GPP minus the maintenance respiration (MR) | | `Psn_QC` | | | | | 500 meters | Quality control bits | | Bitmask for Psn_QC - Bit 0: MODLAND QC bits - 0: Good quality - 1: Other quality - Bit 1: Sensor - 0: Terra - 1: Aqua - Bit 2: Dead detector - 0: Detectors apparently fine for up to 50% of channels 1, 2 - 1: Dead detectors caused \>50% adjacent detector retrieval - Bits 3-4: Cloud state - 0: Significant clouds NOT present (clear) - 1: Significant clouds WERE present - 2: Mixed cloud present on pixel - 3: Cloud state not defined, assumed clear - Bits 5-7: 5-level confidence quality score - 0: Very best possible - 1: Good, very usable, but not the best - 2: Substandard due to geometry problems - use with caution - 3: Substandard due to other than geometry problems - use with caution - 4: Couldn't retrieve pixel (NOT PRODUCED AT ALL - non-terrestrial biome) - 7: Fill Value |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ### 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 dataset = ee.ImageCollection('MODIS/061/MOD17A2H') .filter(ee.Filter.date('2021-01-01', '2021-05-01')); var gpp = dataset.select('Gpp'); var gppVis = { min: 0, max: 600, palette: ['bbe029', '0a9501', '074b03'], }; Map.setCenter(6.746, 46.529, 2); Map.addLayer(gpp, gppVis, 'GPP'); ``` Python setup See the [Python Environment](https://developers.google.com/earth-engine/guides/python_install.md.txt) page for information on the Python API and using `geemap` for interactive development. ```python import ee import geemap.core as geemap ``` ### Colab (Python) ```python dataset = ee.ImageCollection('MODIS/061/MOD17A2H').filter( ee.Filter.date('2021-01-01', '2021-05-01') ) gpp = dataset.select('Gpp') gpp_vis = {'min': 0, 'max': 600, 'palette': ['bbe029', '0a9501', '074b03']} m = geemap.Map() m.set_center(6.746, 46.529, 2) m.add_layer(gpp, gpp_vis, 'GPP') m ``` [Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_061_MOD17A2H) [MOD17A2H.061: Terra Gross Primary Productivity 8-Day Global 500m](https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MOD17A2H.md.txt) The MOD17A2H V6.1 Gross Primary Productivity (GPP) product is a cumulative 8-day composite with a 500m pixel size. The product is based on the radiation-use efficiency concept and can be potentially used as inputs to data models to calculate terrestrial energy, carbon, water cycle processes, and biogeochemistry of vegetation. Documentation: ... MODIS/061/MOD17A2H, 8-day,global,gpp,modis,nasa,photosynthesis,plant-productivity,productivity,psn,terra,usgs 2021-01-01T00:00:00Z/2026-11-01T00:00:00Z -90 -180 90 180 Google Earth Engine https://developers.google.com/earth-engine/datasets - [https://doi.org/10.5067/MODIS/MOD17A2H.061](https://doi.org/https://doi.org/10.5067/MODIS/MOD17A2H.061) - [https://doi.org/10.5067/MODIS/MOD17A2H.061](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MOD17A2H)