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Nominal archive bounds do not guarantee valid pixels or continuous observations.","tasking":false,"tier":"product","title":"ECOSTRESS Tiled Evaporative Stress Index PT-JPL Instantaneous L4 Global 70 m v003"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary publisher discovery. Public artifact metadata does not bypass download authentication or product-specific licensing.","url":"https://search.earthdata.nasa.gov/"},{"collection":"ECO_L4T_WUE_003","kind":"stac-api","notes":"Verified populated native publisher collection on 2026-09-30. Public metadata license: CC0-1.0. Product citation, quality and Earthdata download authentication apply. 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Granule polygons describe file scope rather than each water pixel or validated inundation boundary.","url":"https://cmr.earthdata.nasa.gov/stac/POCLOUD"},{"kind":"https","notes":"Primary NASA PO.DAAC product definitions, quality/correction guidance, citation and authenticated download requirements.","url":"https://podaac.jpl.nasa.gov/dataset/SWOT_L2_HR_Raster_100m_D"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","NetCDF"],"gsd_m":100.0,"id":"nasa-swot-water-raster-100m","instruments":["KaRIn"],"keywords":["earth-observation","primary-source","stac","SWOT_L2_HR_Raster_100m_D_D","SWOT","KaRIn","active microwave","sar","hydrology","surface water","water elevation","inundation","version D","water-raster-100m"],"latency_hours":null,"level":"L2","license":"provider-terms","modalities":["sar","hydrology"],"night":true,"platforms":["SWOT"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2022-12-16","summary":"SWOT Version D water-surface elevation, inundation extent, surface area, water fraction and radar backscatter aggregated from irregular pixel clouds onto a 100 m UTM grid. 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CLMS data policy, citation, product quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_lie_europe_250m_daily_v2_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Preserve native acquisition intervals, publication time and quality/uncertainty assets. License: https://land.copernicus.eu/en/data-policy. 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These products are not terrain elevations or weather forecasts; production cadence does not guarantee continuous real-time availability.","tasking":false,"tier":"preprocessed","title":"CLMS Lake Water Quality (LWQ) NRT Global 300m 10-daily V2 (COG)"},{"access":"free","access_methods":[{"collection":"GSP_SCD_P1Y","kind":"stac-api","notes":"DLR Earth Observation Center STAC API (EOC Geoservice)","url":"https://geoservice.dlr.de/eoc/ogc/stac/v1"},{"collection":"GSP_SCDE_P1Y","kind":"stac-api","notes":"DLR Earth Observation Center STAC API (EOC Geoservice)","url":"https://geoservice.dlr.de/eoc/ogc/stac/v1"},{"collection":"GSP_SCDL_P1Y","kind":"stac-api","notes":"DLR Earth Observation Center STAC API (EOC Geoservice)","url":"https://geoservice.dlr.de/eoc/ogc/stac/v1"},{"collection":"GSP_SCD_MEAN","kind":"stac-api","notes":"DLR Earth Observation Center STAC API (EOC Geoservice)","url":"https://geoservice.dlr.de/eoc/ogc/stac/v1"},{"collection":"GSP_SCDE_MEAN","kind":"stac-api","notes":"DLR Earth Observation Center STAC API (EOC Geoservice)","url":"https://geoservice.dlr.de/eoc/ogc/stac/v1"},{"collection":"GSP_SCDL_MEAN","kind":"stac-api","notes":"DLR Earth Observation Center STAC API (EOC Geoservice)","url":"https://geoservice.dlr.de/eoc/ogc/stac/v1"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["COG"],"gsd_m":500.0,"id":"dlr-global-snowpack-yearly","instruments":["MODIS"],"keywords":["snow","trafficability","climate","seasonality"],"latency_hours":null,"level":"L4","license":"cc-by-4.0","modalities":["hydrology","landcover"],"night":false,"platforms":["Terra","Aqua"],"pricing":null,"provider":"dlr","provider_name":"German Aerospace Center (DLR)","revisit_hours":null,"score":1.0,"start":"2000-01-01","summary":"How many days the ground was snow-covered each hydrological year since 2000, in total and for the early and late season, with long-term means, from daily MODIS snow maps by DLR.","tasking":false,"tier":"product","title":"Global SnowPack: Yearly Snow Cover Duration"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred NASA publisher discovery. Public metadata does not bypass Earthdata download authentication.","url":"https://search.earthdata.nasa.gov/"},{"collection":"MOD16A2_061","kind":"stac-api","notes":"Verified native publisher collection on 2026-09-30. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Published granule footprints are distinct from individual sample locations within files; archive availability is not a forecast or real-time guarantee.","url":"https://cmr.earthdata.nasa.gov/stac/LPCLOUD"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":null,"formats":["STAC","HDF"],"gsd_m":500.0,"id":"nasa-modis-evapotranspiration","instruments":["MODIS"],"keywords":["earth-observation","primary-source","stac","MOD16A2_061","hydrology","landcover"],"latency_hours":null,"level":"L4","license":"provider-terms","modalities":["hydrology","landcover"],"night":false,"platforms":["Terra"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2021-01-01","summary":"8-day evapotranspiration and latent-heat-flux estimates using MODIS and meteorological reanalysis inputs. These are modeled retrospective estimates, not direct measurements or forecasts.","tasking":false,"tier":"product","title":"MODIS/Terra Net Evapotranspiration 8-Day L4 Global 500m SIN Grid V061"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS data policy, citation, product quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_lie_global_500m_daily_v2_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Preserve native acquisition intervals, publication time and quality/uncertainty assets. License: https://land.copernicus.eu/en/data-policy. Publisher timeliness is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-179.9999999,-59.9975,179.9975,80.0025],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":500.0,"id":"cdse-clms-lake-ice-global","instruments":["slstr"],"keywords":["earth-observation","primary-source","stac","optical","hydrology","clms_lie_global_500m_daily_v2_cog"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["optical","hydrology"],"night":false,"platforms":["sentinel-3a","sentinel-3b"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2025-07-08","summary":"Daily 500 m lake-ice classifications across the published global grid. Cloud, water and no-data classes and source flags must be interpreted separately from ice observations. These are observations or derived estimates, not weather forecasts. Published cadence is distinct from continuous real-time availability.","tasking":false,"tier":"preprocessed","title":"CLMS Lake Ice Extent (LIE) Global 500m daily V2 (COG)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS data policy, citation, product quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_sce_europe_500m_daily_v1_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Preserve native acquisition intervals, publication time and quality/uncertainty assets. License: https://land.copernicus.eu/en/data-policy. Publisher timeliness is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-11.0,35.0,50.0,72.0],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":500.0,"id":"cdse-clms-snow-europe","instruments":["modis","viirs"],"keywords":["earth-observation","primary-source","stac","optical","hydrology","clms_sce_europe_500m_daily_v1_cog"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["optical","hydrology"],"night":false,"platforms":["terra","noaa-20"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2017-03-01","summary":"Provides for Europe daily updates of the fraction of snow cover on the ground (also in forested areas) per pixel in percentage (0% to 100%). The data is available in near real time in the spatial resolution of 500 m and with the temporal extent from March 2017 to present. These are observations or derived estimates, not weather forecasts. Published cadence is distinct from continuous real-time availability.","tasking":false,"tier":"preprocessed","title":"CLMS Snow Cover Extent (SCE) Europe 500m daily V1 (COG)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS data policy, citation, product quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_sce_global_1km_daily_v1_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Preserve native acquisition intervals, publication time and quality/uncertainty assets. License: https://land.copernicus.eu/en/data-policy. Publisher timeliness is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":1000.0,"id":"cdse-clms-snow-global","instruments":["slstr","viirs"],"keywords":["earth-observation","primary-source","stac","optical","hydrology","clms_sce_global_1km_daily_v1_cog"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["optical","hydrology"],"night":false,"platforms":["sentinel-3a","sentinel-3b","noaa-20"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2025-12-01","summary":"Daily global snow-cover fraction estimates on a nominal 1 km grid, excluding Antarctica. Clouds, polar night, water and missing observations are flagged; grid extent does not mean every pixel has a valid observation. These are observations or derived estimates, not weather forecasts. Published cadence is distinct from continuous real-time availability.","tasking":false,"tier":"preprocessed","title":"CLMS Snow Cover Extent (SCE) Global 1km daily V1 (COG)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS data policy, citation, product quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_swi_europe_1km_daily_v2_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Preserve native acquisition intervals, publication time and quality/uncertainty assets. License: https://land.copernicus.eu/en/data-policy. Publisher timeliness is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-11.0,35.0,50.0,72.0],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":1000.0,"id":"cdse-clms-soil-water-europe","instruments":["ascat","csar"],"keywords":["earth-observation","primary-source","stac","sar","hydrology","clms_swi_europe_1km_daily_v2_cog"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["sar","hydrology"],"night":true,"platforms":["metop","sentinel-1"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2025-07-12","summary":"Quantifies the moisture condition at various depths in the soil. Daily observations are available for continental Europe in the spatial resolution of 1 km from 2025 onwards. These are observations or derived estimates, not weather forecasts. Published cadence is distinct from continuous real-time availability.","tasking":false,"tier":"preprocessed","title":"CLMS Soil Water Index (SWI) Europe 1km daily V2 (COG)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS citation, quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_lswt-nrt_global_1km_10daily_v1_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. License: https://land.copernicus.eu/en/data-policy. Preserve acquisition intervals, publication timestamps and quality assets.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":1000.0,"id":"cdse-clms-lake-temperature","instruments":["slstr","slstra"],"keywords":["earth-observation","primary-source","stac","lswt-nrt","clms_lswt-nrt_global_1km_10daily_v1_cog"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["hydrology","thermal"],"night":false,"platforms":["sentinel-3a","sentinel-3b"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2016-06-01","summary":"Provides the temperature of the water at the lake surface. The near real time observations (every 10 days) are available at global scale at spatial resolution of approximately 1 km and with the temporal extent from 2016 to present, based on Sentinel-3/SLSTR data. Product quality, uncertainty and observation-count assets must be interpreted with the estimates. These products are not terrain elevations or weather forecasts; production cadence does not guarantee continuous real-time availability.","tasking":false,"tier":"preprocessed","title":"CLMS Lake Surface Water Temperature (LSWT) NRT Global 1km 10-daily V1 (COG)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS data policy, citation, product quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_swe_northernhemisphere_5km_daily_v2_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Preserve native acquisition intervals, publication time and quality/uncertainty assets. License: https://land.copernicus.eu/en/data-policy. Publisher timeliness is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-179.9999999,35.0,179.9999999,85.0],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":5000.0,"id":"cdse-clms-snow-water-equivalent","instruments":["ssmis","viirs"],"keywords":["earth-observation","primary-source","stac","microwave","hydrology","clms_swe_northernhemisphere_5km_daily_v2_cog"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["microwave","hydrology"],"night":false,"platforms":["dmsp","noaa-20"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2024-07-01","summary":"Daily Northern Hemisphere snow water equivalent estimates on a 5 km grid. Satellite retrievals and ancillary observations estimate water stored in snow; mountainous terrain, wet snow and product masks constrain usability. These are observations or derived estimates, not weather forecasts. Published cadence is distinct from continuous real-time availability.","tasking":false,"tier":"preprocessed","title":"CLMS Snow Water Equivalent (SWE) Northern Hemisphere 5km daily V2 (COG)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS data policy, citation, product quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_swi_global_12.5km_daily_v4_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Preserve native acquisition intervals, publication time and quality/uncertainty assets. License: https://land.copernicus.eu/en/data-policy. Publisher timeliness is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":12500.0,"id":"cdse-clms-soil-water-global","instruments":["ascat"],"keywords":["earth-observation","primary-source","stac","hydrology","clms_swi_global_12.5km_daily_v4_cog"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["hydrology"],"night":true,"platforms":["metop"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2007-01-01","summary":"Daily global soil water index estimates derived from Metop ASCAT, on a nominal 12.5 km (0.1 degree) grid. The publisher archive covers 2007 onward and supplies quality flags and indices for multiple soil response times. These are retrieved moisture estimates, not weather forecasts; frozen-surface and other quality masks constrain usability.","tasking":false,"tier":"preprocessed","title":"CLMS Soil Water Index (SWI) Global 12.5km daily V4 (COG)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS citation, quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_swi_global_12.5km_10daily_v4_cog","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. License: https://land.copernicus.eu/en/data-policy. Native footprint geometry and acquisition intervals are retained.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":12500.0,"id":"cdse-clms-soil-water-composite","instruments":["ascat"],"keywords":["earth-observation","primary-source","stac","soil-water-composite","clms_swi_global_12.5km_10daily_v4_cog"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["hydrology"],"night":true,"platforms":["metop"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2007-01-10","summary":"Quantifies the moisture condition at various depths in the soil. 10-daily observations are available at global scale in the spatial resolution of 12.5 km. These are mapped products or observation time series, not weather forecasts or terrain height grids. Published archive extent and cadence do not guarantee valid pixels everywhere or continuous real-time observations.","tasking":false,"tier":"preprocessed","title":"CLMS Soil Water Index (SWI) Global 12.5km 10-daily V4 (COG)"},{"access":"free","access_methods":[{"collection":"river-ice-canada-archive","kind":"stac-api","notes":"Natural Resources Canada geospatial data cube (CCMEO) STAC API","url":"https://datacube.services.geo.ca/pgstac/api"}],"all_weather":false,"bbox":[-139.7,45.1,-65.0,70.2],"category":"events","end":null,"formats":["COG"],"gsd_m":null,"id":"nrcan-river-ice","instruments":["C-band SAR"],"keywords":["river ice","floods","emergency mapping","Canada"],"latency_hours":null,"level":"L4","license":"provider-terms","modalities":["events","hydrology"],"night":false,"platforms":["RADARSAT Constellation Mission","Sentinel-1"],"pricing":null,"provider":"nrcan","provider_name":"Natural Resources Canada","revisit_hours":null,"score":1.0,"start":"2015-04-08","summary":"River ice conditions mapped from radar satellite imagery by Natural Resources Canada's Emergency Geomatics Service during spring break-up, for flood watch along Canadian rivers.","tasking":false,"tier":"product","title":"Canada River Ice Archive (Emergency Geomatics Service)"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary official NASA discovery portal.","url":"https://search.earthdata.nasa.gov/"},{"collection":"landslides-inventory","kind":"stac-api","notes":"NASA VEDA STAC API","url":"https://openveda.cloud/api/stac"},{"collection":"landslides-risk-usgs","kind":"stac-api","notes":"NASA VEDA STAC API","url":"https://openveda.cloud/api/stac"},{"collection":"landslides-nc-flood","kind":"stac-api","notes":"NASA VEDA STAC API","url":"https://openveda.cloud/api/stac"}],"all_weather":false,"bbox":[-88.9,27.1,-69.6,42.5],"category":"events","end":"2024-10-15","formats":["COG","GeoJSON"],"gsd_m":null,"id":"veda-hurricane-helene-landslides","instruments":["Mapping and models"],"keywords":["hurricane","landslides","flooding","disaster"],"latency_hours":null,"level":"L4","license":"us-public-domain","modalities":["events","hydrology"],"night":false,"platforms":["Multiple"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2024-09-26","summary":"NASA and USGS products for Hurricane Helene in the southern Appalachians: the USGS landslide inventory and hazard model, and North Carolina flood extent.","tasking":false,"tier":"product","title":"Hurricane Helene Landslides and Flooding (2024)"},{"access":"free","access_methods":[{"collection":"fws-nwi","kind":"stac-api","notes":"Microsoft Planetary Computer STAC API; asset downloads may need a Planetary Computer token","url":"https://planetarycomputer.microsoft.com/api/stac/v1"}],"all_weather":false,"bbox":[-179.9,13.2,179.9,72.0],"category":"places","end":null,"formats":["GeoParquet"],"gsd_m":null,"id":"fws-nwi","instruments":["Photo interpretation"],"keywords":["wetlands","habitat","hydrology"],"latency_hours":null,"level":"L4","license":"us-public-domain","modalities":["landcover","hydrology","vector"],"night":false,"platforms":["Derived from aerial imagery"],"pricing":null,"provider":"usfws","provider_name":"US Fish and Wildlife Service","revisit_hours":null,"score":1.0,"start":"2022-10-01","summary":"Mapped wetlands and deepwater habitats of the United States and its territories by type, from the US Fish and Wildlife Service, published by state.","tasking":false,"tier":"product","title":"US National Wetlands Inventory"},{"access":"free","access_methods":[{"kind":"https","notes":"Catalog entry reviewed 2026-09-29; start denotes catalog inclusion, not archive inception. Bounding box is nominal scope, not survey coverage. Follow source inventories, terms and formats. Discovery only; no live footprint adapter is supplied for this collection.","url":"https://www.usgs.gov/3d-hydrography-program/access-3dhp-data-products"}],"all_weather":false,"bbox":[-180.0,0.0,180.0,85.0],"category":"places","end":null,"formats":["Provider-native"],"gsd_m":null,"id":"usgs-3dhp","instruments":["Product-specific measurements or analyses"],"keywords":["land","inland-water","littoral"],"latency_hours":null,"level":"L4","license":"us-public-domain","modalities":["hydrology","hydrography","vector"],"night":false,"platforms":["Official public product directory"],"pricing":null,"provider":"usgs","provider_name":"U.S. Geological Survey","revisit_hours":null,"score":1.0,"start":"2026-09-29","summary":"Streams, catchments and hydrographic networks. Modern 3DHP coverage is developing; consult product inventories and legacy archives.","tasking":false,"tier":"product","title":"USGS 3D Hydrography Program"},{"access":"free","access_methods":[{"kind":"https","notes":"Catalog entry reviewed 2026-09-29; start denotes catalog inclusion, not archive inception. Bounding box is nominal scope, not survey coverage. Follow source inventories, terms and formats. Discovery only; no live footprint adapter is supplied for this collection.","url":"https://api.tidesandcurrents.noaa.gov/api/prod/"}],"all_weather":false,"bbox":[-180.0,0.0,180.0,85.0],"category":"in-situ","end":null,"formats":["Provider-native"],"gsd_m":null,"id":"noaa-coops","instruments":["Product-specific measurements or analyses"],"keywords":["maritime","littoral","amphibious"],"latency_hours":null,"level":"L4","license":"us-public-domain","modalities":["ocean-in-situ","hydrology"],"night":false,"platforms":["Official public product directory"],"pricing":null,"provider":"noaa-nos","provider_name":"NOAA National Ocean Service","revisit_hours":null,"score":1.0,"start":"2026-09-29","summary":"Station observations and predictions for tides, water levels and currents. API requests require station, product and time parameters.","tasking":false,"tier":"product","title":"NOAA Coastal Water Levels and Currents"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary official discovery portal. Search by the collection title or product short name; sign-in and product-specific access requirements may apply.","url":"https://search.earthdata.nasa.gov/"},{"kind":"https","notes":"Catalog entry reviewed 2026-09-29; start denotes catalog inclusion, not archive inception. Nominal scope is not observed coverage. Consult source quality flags, effective periods and access requirements. No live footprint adapter is supplied for this discovery record.","url":"https://nsidc.org/data/spl3smp/versions/9"},{"collection":"SPL3SMP_009","kind":"stac-api","notes":"Official NASA Earthdata artifact geometry. Follow pagination for the complete search.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":null,"formats":["HDF5"],"gsd_m":null,"id":"nasa-smap-soil-moisture","instruments":["L-band passive microwave radiometer"],"keywords":["earth-observation","land","soil-moisture"],"latency_hours":null,"level":"L3","license":"us-public-domain","modalities":["microwave","soil","hydrology"],"night":false,"platforms":["SMAP"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2026-09-29","summary":"Daily gridded soil moisture retrievals from the SMAP passive microwave radiometer. The standard grid is 36 km; grid spacing is distinct from the instrument footprint. Earthdata access and quality flags apply.","tasking":false,"tier":"product","title":"SMAP L3 Radiometer Soil Moisture"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred NASA publisher discovery. Public metadata does not bypass Earthdata authentication for data downloads.","url":"https://search.earthdata.nasa.gov/"},{"collection":"SWOT_L2_LR_SSH_D_D","kind":"stac-api","notes":"Verified native publisher collection on 2026-09-30. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints are not individual feature geometries within assets.","url":"https://cmr.earthdata.nasa.gov/stac/POCLOUD"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","NetCDF"],"gsd_m":null,"id":"nasa-swot-sea-surface-height","instruments":["KaRIn"],"keywords":["earth-observation","primary-source","stac","SWOT_L2_LR_SSH_D_D","sar","hydrology"],"latency_hours":null,"level":"L2","license":"provider-terms","modalities":["sar","hydrology"],"night":false,"platforms":["SWOT"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2022-12-16","summary":"SWOT Version D sea-surface height and significant-wave-height observations. Inspect quality flags and corrections; these are observations, not ocean forecasts.","tasking":false,"tier":"product","title":"SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product, Version D"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred NASA publisher discovery. Public metadata does not bypass Earthdata authentication for data downloads.","url":"https://search.earthdata.nasa.gov/"},{"collection":"SWOT_L2_HR_Raster_D_D","kind":"stac-api","notes":"Verified native publisher collection on 2026-09-30. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints are not individual feature geometries within assets.","url":"https://cmr.earthdata.nasa.gov/stac/POCLOUD"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","NetCDF"],"gsd_m":null,"id":"nasa-swot-water-raster","instruments":["KaRIn"],"keywords":["earth-observation","primary-source","stac","SWOT_L2_HR_Raster_D_D","sar","hydrology"],"latency_hours":null,"level":"L2","license":"provider-terms","modalities":["sar","hydrology"],"night":false,"platforms":["SWOT"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2022-12-16","summary":"SWOT Version D rasterized water-surface elevation, inundation and radar backscatter. Grid spacing varies by asset; water height is not a terrain DEM.","tasking":false,"tier":"product","title":"SWOT Level 2 Water Mask Raster Image Data Product, Version D"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred NASA publisher discovery. Public metadata does not bypass Earthdata authentication for data downloads.","url":"https://search.earthdata.nasa.gov/"},{"collection":"SWOT_L2_HR_LakeSP_D_D","kind":"stac-api","notes":"Verified native publisher collection on 2026-09-30. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints are not individual feature geometries within assets.","url":"https://cmr.earthdata.nasa.gov/stac/POCLOUD"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","NetCDF","Shapefile"],"gsd_m":null,"id":"nasa-swot-lake-single-pass","instruments":["KaRIn"],"keywords":["earth-observation","primary-source","stac","SWOT_L2_HR_LakeSP_D_D","sar","hydrology","vector"],"latency_hours":null,"level":"L2","license":"provider-terms","modalities":["sar","hydrology","vector"],"night":false,"platforms":["SWOT"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2022-12-16","summary":"SWOT Version D lake single-pass measurements. The viewer exposes published granule footprints; lake vector features and quality flags reside in publisher assets.","tasking":false,"tier":"product","title":"SWOT Level 2 Lake Single-Pass Vector Data Product, Version D"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred NASA publisher discovery. Public metadata does not bypass Earthdata authentication for data downloads.","url":"https://search.earthdata.nasa.gov/"},{"collection":"SWOT_L2_HR_RiverSP_D_D","kind":"stac-api","notes":"Verified native publisher collection on 2026-09-30. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints are not individual feature geometries within assets.","url":"https://cmr.earthdata.nasa.gov/stac/POCLOUD"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","NetCDF","Shapefile"],"gsd_m":null,"id":"nasa-swot-river-single-pass","instruments":["KaRIn"],"keywords":["earth-observation","primary-source","stac","SWOT_L2_HR_RiverSP_D_D","sar","hydrology","vector"],"latency_hours":null,"level":"L2","license":"provider-terms","modalities":["sar","hydrology","vector"],"night":false,"platforms":["SWOT"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2022-12-16","summary":"SWOT Version D river reach and node hydrologic measurements. Published granule footprints are distinct from individual river geometries inside the files.","tasking":false,"tier":"product","title":"SWOT Level 2 River Single-Pass Vector Data Product, Version D"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred NASA publisher discovery. Public metadata does not bypass Earthdata authentication for data downloads.","url":"https://search.earthdata.nasa.gov/"},{"collection":"SPL3SMP_E_006","kind":"stac-api","notes":"Verified native publisher collection on 2026-09-30. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints are not individual feature geometries within assets.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"},{"kind":"https","notes":"Primary documentation and current geolocation/reprocessing advisory for the 2026-05-14 through 2026-07-28 interval.","url":"https://nsidc.org/data/spl3smp_e/versions/6"}],"all_weather":false,"bbox":[-180.0,-85.044,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","HDF5"],"gsd_m":null,"id":"nasa-smap-enhanced-soil-moisture","instruments":["L-band passive microwave radiometer"],"keywords":["earth-observation","primary-source","stac","SPL3SMP_E_006","microwave","soil","hydrology"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["microwave","soil","hydrology"],"night":false,"platforms":["SMAP"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2015-03-31","summary":"Enhanced daily SMAP soil-moisture retrievals posted to a 9 km grid. Grid spacing is not instrument resolution; screening and Earthdata download authentication apply. NSIDC advisory checked 2026-10-03: SMAP Standard and Near-Real-Time products experienced a geolocation issue from 2026-05-14 through 2026-07-28. Standard products in that interval are being reprocessed; Near-Real-Time products will not be replaced. Consult current publisher guidance and replacement metadata before spatial use.","tasking":false,"tier":"product","title":"SMAP Enhanced L3 Radiometer Global and Polar Grid Daily 9 km EASE-Grid Soil Moisture V006"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred Copernicus publisher discovery portal. Product citation, licensing and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"sentinel-3-sr-2-wat-ntc","kind":"stac-api","notes":"Verified publisher STAC collection on 2026-09-30. Native license marker: other. See publisher license links. Timeliness category: NT. Publisher timeliness: P1M. These are observations, not forecasts; timeliness metadata is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","NetCDF"],"gsd_m":null,"id":"cdse-s3-ocean-altimetry","instruments":["sral"],"keywords":["earth-observation","primary-source","stac","sentinel-3-sr-2-wat-ntc","altimetry","along-track"],"latency_hours":null,"level":"L2","license":"copernicus-open","modalities":["radar-altimetry","hydrology"],"night":true,"platforms":["sentinel-3a","sentinel-3b"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2017-01-28","summary":"Ocean radar-altimetry observations. Along-track surface height is not a gridded terrain DEM; use geophysical corrections and instrument-mode conventions.","tasking":false,"tier":"preprocessed","title":"Sentinel-3 SRAL Ocean Radar Altimetry (NTC)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred Copernicus publisher discovery portal. Product citation, licensing and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"sentinel-3-sr-2-lan-hy-ntc","kind":"stac-api","notes":"Verified publisher STAC collection on 2026-09-30. Native license marker: other. See publisher license links. Timeliness category: NT. Publisher timeliness: P1M. These are observations, not forecasts; timeliness metadata is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","NetCDF"],"gsd_m":null,"id":"cdse-s3-inland-water-altimetry","instruments":["sral"],"keywords":["earth-observation","primary-source","stac","sentinel-3-sr-2-lan-hy-ntc","altimetry","along-track"],"latency_hours":null,"level":"L2","license":"copernicus-open","modalities":["radar-altimetry","hydrology"],"night":true,"platforms":["sentinel-3a","sentinel-3b"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2016-03-01","summary":"Radar-altimetry surface-height estimates over lakes and rivers. Granule footprints are distinct from individual along-track sample positions inside publisher files.","tasking":false,"tier":"preprocessed","title":"Sentinel-3 SRAL Land Radar Altimetry - Hydrology (NTC)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred Copernicus publisher discovery portal. Product citation, licensing and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"sentinel-3-sr-2-lan-si-ntc","kind":"stac-api","notes":"Verified publisher STAC collection on 2026-09-30. Native license marker: other. See publisher license links. Timeliness category: NT. Publisher timeliness: P1M. These are observations, not forecasts; timeliness metadata is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","NetCDF"],"gsd_m":null,"id":"cdse-s3-sea-ice-freeboard","instruments":["sral"],"keywords":["earth-observation","primary-source","stac","sentinel-3-sr-2-lan-si-ntc","altimetry","along-track"],"latency_hours":null,"level":"L2","license":"copernicus-open","modalities":["radar-altimetry","hydrology"],"night":true,"platforms":["sentinel-3a","sentinel-3b"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2016-03-01","summary":"Radar-freeboard estimates over Arctic and Antarctic sea ice. Freeboard is distinct from ice thickness and terrain height; corrections and uncertainty apply.","tasking":false,"tier":"preprocessed","title":"Sentinel-3 SRAL Land Radar Altimetry - Sea Ice (NTC)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS data policy, citation, product quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_wl-lakes_global_vector_daily_v2_geojson","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Preserve native acquisition intervals, publication time and quality/uncertainty assets. License: https://land.copernicus.eu/en/data-policy. Publisher timeliness is not a live-service guarantee.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-154.9,-50.33,170.17,71.48],"category":"imagery","end":null,"formats":["STAC","GeoJSON"],"gsd_m":null,"id":"cdse-clms-lake-water-level","instruments":["radar-altimeter"],"keywords":["earth-observation","primary-source","stac","radar-altimetry","hydrology","clms_wl-lakes_global_vector_daily_v2_geojson"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["radar-altimetry","hydrology"],"night":true,"platforms":["sentinel-3a","sentinel-3b","sentinel-6a"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"1992-09-26","summary":"Lake water-level time-series artifacts from satellite radar altimetry, located by publisher point geometries. Heights use the EGM2008 geoid; each GeoJSON artifact can contain multiple observation dates and uncertainties. These points are not terrain grids or lake extent polygons. These are observations or derived estimates, not weather forecasts. Published cadence is distinct from continuous real-time availability.","tasking":false,"tier":"preprocessed","title":"CLMS Water Level (WL) Lakes Global vector daily V2 (GeoJSON)"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred publisher discovery portal. CLMS citation, quality and download authentication requirements apply.","url":"https://dataspace.copernicus.eu/"},{"collection":"clms_wl-rivers_global_vector_daily_v2_geojson","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. License: https://land.copernicus.eu/en/data-policy. Native footprint geometry and acquisition intervals are retained.","url":"https://stac.dataspace.copernicus.eu/v1"}],"all_weather":false,"bbox":[-177.94,-53.93,179.66,74.05],"category":"imagery","end":null,"formats":["STAC","GeoJSON"],"gsd_m":null,"id":"cdse-clms-river-water-level","instruments":["radar-altimeter"],"keywords":["earth-observation","primary-source","stac","river-water-level","clms_wl-rivers_global_vector_daily_v2_geojson"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["radar-altimetry","hydrology"],"night":true,"platforms":["sentinel-3a","sentinel-3b"],"pricing":null,"provider":"copernicus","provider_name":"ESA / Copernicus","revisit_hours":null,"score":1.0,"start":"2008-07-12","summary":"Defined as the height, in meters above the geoid, of the reflecting surface of continental water bodies. It is observed by space radar altimeters and data are available at global scale in near real time in vector format with the temporal extent from 2002 to present. These are mapped products or observation time series, not weather forecasts or terrain height grids. Published archive extent and cadence do not guarantee valid pixels everywhere or continuous real-time observations.","tasking":false,"tier":"preprocessed","title":"CLMS Water Level (WL) Rivers Global vector daily V2 (GeoJSON)"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary publisher discovery.","url":"https://search.earthdata.nasa.gov/"},{"collection":"ASTWBD_001","kind":"stac-api","notes":"Verified populated publisher collection. Native geometry locates artifacts; embedded file coordinates are not enumerated automatically.","url":"https://cmr.earthdata.nasa.gov/stac/LPCLOUD"}],"all_weather":false,"bbox":[-180.0,-83.0,180.0,82.0],"category":"imagery","end":"2013-11-30","formats":["STAC","GeoTIFF"],"gsd_m":null,"id":"nasa-aster-water-bodies","instruments":["ASTER"],"keywords":["earth-observation","primary-source","stac","ASTWBD_001"],"latency_hours":null,"level":"unspecified","license":"provider-terms","modalities":["hydrology"],"night":false,"platforms":["Terra"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2000-03-01","summary":"Historical ASTER water classification for oceans, rivers and lakes, with associated flattened water surface elevation. One arcsecond angular grid is approximately 30 m at the equator, not a uniform 30 m metric grid. Archive observations span 2000–2013; this is not a current water inventory. Native artifact geometry is connected and indexed; catalog bounds are nominal scope, not complete observed coverage. Publisher quality, attribution and download authentication apply.","tasking":false,"tier":"product","title":"ASTER Global Water Bodies Database V001"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary publisher discovery. Public artifact metadata does not bypass download authentication or product-specific licensing.","url":"https://search.earthdata.nasa.gov/"},{"collection":"ATL12_007","kind":"stac-api","notes":"Verified native publisher collection on 2026-10-02. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints identify artifacts, not every observation location within assets. Follow continuation pages for the complete requested search.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"}],"all_weather":false,"bbox":[-180.0,-88.0,180.0,88.0],"category":"imagery","end":null,"formats":["STAC","HDF5"],"gsd_m":null,"id":"nasa-icesat2-ocean-height","instruments":["ATLAS"],"keywords":["earth-observation","primary-source","stac","ATL12_007","lidar","altimetry","ocean"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["lidar","elevation","hydrology"],"night":true,"platforms":["ICESat-2"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2018-10-13","summary":"Along-track ocean surface heights from ICESat-2 laser altimetry. Use quality flags, uncertainties and geophysical corrections. Native granule footprints are coverage metadata, not a continuous sea-surface raster or individual laser sample locations.","tasking":false,"tier":"product","title":"ATLAS/ICESat-2 L3A Ocean Surface Height V007"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary publisher discovery. Public artifact metadata does not bypass download authentication or product-specific licensing.","url":"https://search.earthdata.nasa.gov/"},{"collection":"ATL13_007","kind":"stac-api","notes":"Verified native publisher collection on 2026-10-02. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints identify artifacts, not every observation location within assets. Follow continuation pages for the complete requested search.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"}],"all_weather":false,"bbox":[-180.0,-88.0,180.0,88.0],"category":"imagery","end":null,"formats":["STAC","HDF5"],"gsd_m":null,"id":"nasa-icesat2-inland-water-height","instruments":["ATLAS"],"keywords":["earth-observation","primary-source","stac","ATL13_007","lidar","altimetry","hydrology"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["lidar","elevation","hydrology"],"night":true,"platforms":["ICESat-2"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2018-10-13","summary":"Along-track inland surface-water measurements from ICESat-2, including water-surface heights and associated derived parameters. Consult product quality flags and corrections. Granule footprints identify files; lake and river sample locations reside in publisher assets.","tasking":false,"tier":"product","title":"ATLAS/ICESat-2 L3A Along Track Inland Surface Water Data V007"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred NASA publisher discovery. Public metadata does not bypass Earthdata authentication for data downloads.","url":"https://search.earthdata.nasa.gov/"},{"collection":"SPL4SMGP_008","kind":"stac-api","notes":"Verified native publisher collection on 2026-10-02. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints identify artifacts, not every observation location within assets. Follow continuation pages for the complete requested search.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"}],"all_weather":false,"bbox":[-180.0,-85.044,180.0,85.044],"category":"model","end":null,"formats":["STAC","HDF5"],"gsd_m":null,"id":"nasa-smap-root-zone-soil-moisture","instruments":["L-band passive microwave radiometer"],"keywords":["earth-observation","primary-source","stac","SPL4SMGP_008","microwave","soil","hydrology","data-assimilation","land-surface-model","root-zone","9-km-grid","3-hourly"],"latency_hours":null,"level":"L4","license":"provider-terms","modalities":["microwave","soil","hydrology"],"night":false,"platforms":["SMAP"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2015-03-31","summary":"Surface and root-zone soil moisture estimates from assimilation of SMAP brightness temperatures into a land-surface model, posted every three hours to a 9 km grid. This is an analysis product rather than a direct root-zone measurement or a weather forecast. Grid spacing is distinct from the instrument footprint; quality and uncertainty information apply.","tasking":false,"tier":"product","title":"SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data V008"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary NASA discovery. Public metadata does not bypass Earthdata authentication or product-specific citation and download requirements.","url":"https://search.earthdata.nasa.gov/"},{"collection":"ATL07_007","kind":"stac-api","notes":"Verified populated native collection on 2026-10-02. Native metadata license: CC0-1.0. Product-specific citation, quality screening and Earthdata access requirements apply. Granule footprints describe artifact scope, not individual measurements or observed ice/freeze conditions. Follow continuation pages for the requested search.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"},{"kind":"https","notes":"Primary product documentation, data citation, known issues and download requirements.","url":"https://nsidc.org/data/atl07/versions/7"}],"all_weather":false,"bbox":[-180.0,-88.0,180.0,88.0],"category":"imagery","end":null,"formats":["STAC","HDF5"],"gsd_m":null,"id":"nasa-icesat2-sea-ice-height","instruments":["ATLAS"],"keywords":["earth-observation","primary-source","stac","ATL07_007","sea ice","cryosphere","laser altimetry","height"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["lidar","elevation","hydrology"],"night":true,"platforms":["ICESat-2"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2018-10-14","summary":"Along-track sea surface and sea-ice heights from ICESat-2 ATLAS laser altimetry, including variable-length segments and fixed 10 m strong-beam segments. Segment spacing is not image GSD. Apply quality flags and geophysical corrections; native granule footprints are artifact coverage metadata, not sea-ice presence or individual laser sample locations.","tasking":false,"tier":"product","title":"ATLAS/ICESat-2 L3A Sea Ice Height V007"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary NASA discovery. Public metadata does not bypass Earthdata authentication or product-specific citation and download requirements.","url":"https://search.earthdata.nasa.gov/"},{"collection":"ATL10_007","kind":"stac-api","notes":"Verified populated native collection on 2026-10-02. Native metadata license: CC0-1.0. Product-specific citation, quality screening and Earthdata access requirements apply. Granule footprints describe artifact scope, not individual measurements or observed ice/freeze conditions. Follow continuation pages for the requested search.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"},{"kind":"https","notes":"Primary product documentation, data citation, known issues and download requirements.","url":"https://nsidc.org/data/atl10/versions/7"}],"all_weather":false,"bbox":[-180.0,-88.0,180.0,88.0],"category":"imagery","end":null,"formats":["STAC","HDF5"],"gsd_m":null,"id":"nasa-icesat2-sea-ice-freeboard","instruments":["ATLAS"],"keywords":["earth-observation","primary-source","stac","ATL10_007","sea ice","cryosphere","laser altimetry","freeboard"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["lidar","elevation","hydrology"],"night":true,"platforms":["ICESat-2"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2018-10-14","summary":"Along-track sea-ice freeboard from ICESat-2 ATLAS laser altimetry, reported in 10 km swath segments. Freeboard is height above the local sea surface, not directly ice thickness. Apply product quality flags and uncertainties; native granule footprints identify artifacts, not continuous ice coverage or individual measurement locations.","tasking":false,"tier":"product","title":"ATLAS/ICESat-2 L3A Sea Ice Freeboard V007"},{"access":"free","access_methods":[{"kind":"https","notes":"Primary NASA discovery. Public metadata does not bypass Earthdata authentication or product-specific citation and download requirements.","url":"https://search.earthdata.nasa.gov/"},{"collection":"SPL3FTP_E_004","kind":"stac-api","notes":"Verified populated native collection on 2026-10-02. Native metadata license: CC0-1.0. Product-specific citation, quality screening and Earthdata access requirements apply. Granule footprints describe artifact scope, not individual measurements or observed ice/freeze conditions. Follow continuation pages for the requested search.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"},{"kind":"https","notes":"Primary product documentation, data citation, known issues and download requirements.","url":"https://nsidc.org/data/spl3ftp_e/versions/4"}],"all_weather":false,"bbox":[-180.0,-85.044,180.0,85.044],"category":"imagery","end":null,"formats":["STAC","HDF5"],"gsd_m":null,"id":"nasa-smap-freeze-thaw","instruments":["SMAP L-BAND RADIOMETER"],"keywords":["earth-observation","primary-source","stac","SPL3FTP_E_004","freeze thaw","cryosphere","passive microwave","weather","9 km grid"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["microwave","soil","hydrology"],"night":false,"platforms":["SMAP"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2015-03-31","summary":"Daily global and Northern Hemisphere landscape freeze/thaw states derived from SMAP L-band passive microwave radiometry and posted to 9 km EASE-Grid 2.0 grids. Grid posting is not instrument resolution. Apply product screening and quality flags; granule geometry describes file scope, not a polygon of frozen ground.","tasking":false,"tier":"product","title":"SMAP Enhanced L3 Radiometer Global and Northern Hemisphere Daily 9 km EASE-Grid Freeze/Thaw State V004"},{"access":"free","access_methods":[{"kind":"https","notes":"Preferred NASA publisher discovery. Public metadata does not bypass Earthdata authentication for data downloads.","url":"https://search.earthdata.nasa.gov/"},{"collection":"SPL2SMP_E_006","kind":"stac-api","notes":"Verified populated primary collection on 2026-10-03. Native metadata license: CC0-1.0. Preserve native granule geometry, acquisition intervals, quality information and Earthdata authentication. Index only requested metadata; HDF5 assets remain remote. NSIDC advisory checked 2026-10-03: SMAP Standard and Near-Real-Time products experienced a geolocation issue from 2026-05-14 through 2026-07-28. Standard products in that interval are being reprocessed; Near-Real-Time products will not be replaced. Consult current publisher guidance and replacement metadata before spatial use.","url":"https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD"},{"kind":"https","notes":"Primary product documentation, citation, quality screening and current geolocation/reprocessing advisories.","url":"https://nsidc.org/data/spl2smp_e/versions/6"}],"all_weather":false,"bbox":[-180.0,-85.044,180.0,90.0],"category":"imagery","end":null,"formats":["STAC","HDF5"],"gsd_m":null,"id":"nasa-smap-half-orbit-soil-moisture","instruments":["SMAP L-BAND RADIOMETER"],"keywords":["earth-observation","primary-source","stac","SPL2SMP_E_006","SMAP","passive microwave","9 km grid","half-orbit","geolocation advisory","surface soil moisture","hydrology"],"latency_hours":null,"level":"L2","license":"provider-terms","modalities":["microwave","soil","hydrology"],"night":false,"platforms":["SMAP"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2015-03-31","summary":"Half-orbit surface soil moisture retrievals from SMAP L-band passive microwave brightness temperatures, posted to global and Northern Hemisphere 9 km EASE-Grid 2.0 grids. Grid posting is not instrument resolution. Apply retrieval quality, surface, frozen-ground and radio-frequency interference screening; file swaths do not establish valid retrievals at every location. Observation intervals differ from daily composites, revisit and publisher latency. These are observations rather than root-zone measurements or weather forecasts. NSIDC advisory checked 2026-10-03: SMAP Standard and Near-Real-Time products experienced a geolocation issue from 2026-05-14 through 2026-07-28. Standard products in that interval are being reprocessed; Near-Real-Time products will not be replaced. Consult current publisher guidance and replacement metadata before spatial use.","tasking":false,"tier":"product","title":"SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V006"}],"returned":50,"total":51}