{"discovery":{"qdrant_configured":true,"strategy":"lexical"},"facets":{"access":{"free":7},"modality":{"hydrology":5,"microwave":5,"soil":7,"thermal":1,"vector":1},"provider":{"nasa":6,"usda-nrcs":1},"tier":{"product":7}},"query":{"access":null,"all_weather":null,"bbox":null,"datetime":null,"limit":null,"max_gsd":null,"modality":"soil","night":null,"offset":null,"provider":null,"q":null,"sort":null,"tasking":null,"tier":null},"results":[{"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_L3T_SM_002","kind":"stac-api","notes":"Verified populated publisher collection on 2026-09-30. Native metadata license: CC0-1.0. Follow acquisition intervals, quality documentation and Earthdata download requirements. Publisher granule footprints locate artifacts; nested asset features are separate.","url":"https://cmr.earthdata.nasa.gov/stac/LPCLOUD"}],"all_weather":false,"bbox":[-180.0,-54.0,180.0,54.0],"category":"imagery","end":null,"formats":["STAC","COG","GeoTIFF"],"gsd_m":70.0,"id":"nasa-ecostress-soil-moisture","instruments":["ECOSTRESS"],"keywords":["earth-observation","primary-source","stac","ecostress-soil-moisture","ECO_L3T_SM_002"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["thermal","soil"],"night":false,"platforms":["ISS"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2018-07-10","summary":"70 m soil moisture estimates downscaled from GEOS-5 using ECOSTRESS temperature, vegetation and albedo. This is a derived estimate rather than direct 70 m moisture sensing. Some 2023 granules lack the publisher cloud layer. Publisher quality, acquisition gaps and download authentication requirements apply. Native archive extent is nominal scope rather than complete valid coverage. This is not a terrain grid.","tasking":false,"tier":"product","title":"ECOSTRESS Tiled Downscaled Soil Moisture Instantaneous L3 Global 70 m V002"},{"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.nrcs.usda.gov/resources/data-and-reports/soil-survey-geographic-database-ssurgo"},{"kind":"https","notes":"Official spatial and tabular downloads by soil survey area.","url":"https://websoilsurvey.nrcs.usda.gov/"}],"all_weather":false,"bbox":[-180.0,0.0,180.0,85.0],"category":"places","end":null,"formats":["Shapefile","Delimited text"],"gsd_m":null,"id":"usda-ssurgo","instruments":["Field soil surveys","Laboratory soil analysis"],"keywords":["land","ground","mobility"],"latency_hours":null,"level":"L4","license":"us-public-domain","modalities":["soil","vector"],"night":false,"platforms":["National Cooperative Soil Survey"],"pricing":null,"provider":"usda-nrcs","provider_name":"USDA Natural Resources Conservation Service","revisit_hours":null,"score":1.0,"start":"2026-09-29","summary":"Soil polygons and properties for terrain mobility, drainage and engineering context. Survey coverage and scale vary.","tasking":false,"tier":"product","title":"NRCS Soil Survey Geographic Database"},{"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":"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 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":"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":7,"total":7}