{"id":"modis-17A2HGF-061","type":"Collection","links":[{"rel":"items","type":"application/geo+json","href":"https://planetarycomputer.microsoft.com/api/stac/v1/collections/modis-17A2HGF-061/items"},{"rel":"parent","type":"application/json","href":"https://planetarycomputer.microsoft.com/api/stac/v1/"},{"rel":"root","type":"application/json","href":"https://planetarycomputer.microsoft.com/api/stac/v1/"},{"rel":"self","type":"application/json","href":"https://planetarycomputer.microsoft.com/api/stac/v1/collections/modis-17A2HGF-061"},{"rel":"help","href":"https://lpdaac.usgs.gov/documents/972/MOD17_User_Guide_V61.pdf","title":"MOD17 User Guide"},{"rel":"describedby","href":"https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/61/MOD17A2HGF","title":"MOD17A2HGF file specification"},{"rel":"describedby","href":"https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/61/MYD17A2HGF","title":"MYD17A2HGF file specification"},{"rel":"cite-as","href":"https://doi.org/10.5067/MODIS/MOD17A2HGF.061","title":"LP DAAC - MOD17A2HGF"},{"rel":"cite-as","href":"https://doi.org/10.5067/MODIS/MYD17A2HGF.061","title":"LP DAAC - MYD17A2HGF"},{"rel":"license","href":"https://lpdaac.usgs.gov/data/data-citation-and-policies/","title":"LP DAAC - Data Citation and Policies"},{"rel":"http://www.opengis.net/def/rel/ogc/1.0/queryables","type":"application/schema+json","title":"Queryables","href":"https://planetarycomputer.microsoft.com/api/stac/v1/collections/modis-17A2HGF-061/queryables"},{"rel":"describedby","href":"https://planetarycomputer.microsoft.com/dataset/modis-17A2HGF-061","title":"Human readable dataset overview and reference","type":"text/html"}],"title":"MODIS Gross Primary Productivity 8-Day Gap-Filled","assets":{"thumbnail":{"href":"https://ai4edatasetspublicassets.blob.core.windows.net/assets/pc_thumbnails/modis-17A2HGF-061.png","type":"image/png","roles":["thumbnail"],"title":"MODIS Gross Primary Productivity 8-Day Gap-Filled thumbnail"},"geoparquet-items":{"href":"abfs://items/modis-17A2HGF-061.parquet","type":"application/x-parquet","roles":["stac-items"],"title":"GeoParquet STAC items","description":"Snapshot of the collection's STAC items exported to GeoParquet format.","msft:partition_info":{"is_partitioned":true,"partition_frequency":"MS"},"table:storage_options":{"account_name":"pcstacitems"}}},"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["2000-02-18T00:00:00Z",null]]}},"license":"proprietary","keywords":["NASA","MODIS","Satellite","Vegetation","Global","MOD17A2HGF","MYD17A2HGF"],"providers":[{"url":"https://lpdaac.usgs.gov/","name":"NASA LP DAAC at the USGS EROS Center","roles":["producer","licensor","processor"]},{"url":"https://planetarycomputer.microsoft.com","name":"Microsoft","roles":["host","processor"]}],"summaries":{"platform":["aqua","terra"],"instruments":["modis"]},"description":"The Version 6.1 Gross Primary Productivity (GPP) product is a cumulative 8-day composite of values with 500 meter (m) pixel size based on the radiation use efficiency concept that can be potentially used as inputs to data models to calculate terrestrial energy, carbon, water cycle processes, and biogeochemistry of vegetation. The Moderate Resolution Imaging Spectroradiometer (MODIS) data product includes information about GPP and Net Photosynthesis (PSN). The PSN band values are the GPP less the Maintenance Respiration (MR). The data product also contains a PSN Quality Control (QC) layer. The quality layer contains quality information for both the GPP and the PSN. This product will be generated at the end of each year when the entire yearly 8-day 15A2H is available. Hence, the gap-filled A2HGF is the improved 17, which has cleaned the poor-quality inputs from 8-day Leaf Area Index and Fraction of Photosynthetically Active Radiation (FPAR/LAI) based on the Quality Control (QC) label for every pixel. If any LAI/FPAR pixel did not meet the quality screening criteria, its value is determined through linear interpolation. However, users cannot get this product in near-real time because it will be generated only at the end of a given year.","item_assets":{"hdf":{"type":"application/x-hdf","roles":["data"],"title":"Source data containing all bands"},"Gpp_500m":{"type":"image/tiff; application=geotiff; profile=cloud-optimized","roles":["data"],"title":"Gross Primary Productivity","raster:bands":[{"unit":"kg C/m^2","scale":0.0001,"data_type":"int16","spatial_resolution":500}]},"metadata":{"type":"application/xml","roles":["metadata"],"title":"Federal Geographic Data Committee (FGDC) Metadata"},"PsnNet_500m":{"type":"image/tiff; application=geotiff; profile=cloud-optimized","roles":["data"],"title":"Net Photosynthesis","raster:bands":[{"unit":"kg C/m^2","scale":0.0001,"data_type":"int16","spatial_resolution":500}]},"Psn_QC_500m":{"type":"image/tiff; application=geotiff; profile=cloud-optimized","roles":["data"],"title":"Quality control indicators","raster:bands":[{"data_type":"uint8","spatial_resolution":500}]}},"stac_version":"1.0.0","msft:group_id":"modis","msft:container":"modis-061","stac_extensions":["https://stac-extensions.github.io/raster/v1.0.0/schema.json","https://stac-extensions.github.io/item-assets/v1.0.0/schema.json","https://stac-extensions.github.io/scientific/v1.0.0/schema.json","https://stac-extensions.github.io/table/v1.2.0/schema.json"],"sci:publications":[{"doi":"10.5067/MODIS/MOD17A2HGF.061","citation":"Running, S., &amp; Zhao, M. (2021). <i>MODIS/Terra Gross Primary Productivity Gap-Filled 8-Day L4 Global 500m SIN Grid V061</i> [Data set]. NASA EOSDIS Land Processes DAAC. https://doi.org/10.5067/MODIS/MOD17A2HGF.061"},{"doi":"10.5067/MODIS/MYD17A2HGF.061","citation":"Running, S., &amp; Zhao, M. (2021). <i>MODIS/Aqua Gross Primary Productivity Gap-Filled 8-Day L4 Global 500m SIN Grid V061</i> [Data set]. NASA EOSDIS Land Processes DAAC. https://doi.org/10.5067/MODIS/MYD17A2HGF.061"}],"msft:storage_account":"modiseuwest","msft:short_description":"MODIS Gross Primary Productivity 8-Day Gap-Filled","msft:region":"westeurope"}