{"discovery":{"qdrant_configured":true,"strategy":"lexical"},"facets":{"access":{"free":15},"modality":{"atmospheric":8,"hydrology":6,"microwave":15,"soil":5,"weather-radar":1},"provider":{"copernicus":1,"nasa":14},"tier":{"preprocessed":2,"product":13}},"query":{"access":null,"all_weather":null,"bbox":null,"datetime":null,"limit":null,"max_gsd":null,"modality":"microwave","night":null,"offset":null,"provider":null,"q":null,"sort":null,"tasking":null,"tier":null},"results":[{"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 NASA publisher discovery. Public metadata does not bypass Earthdata download authentication.","url":"https://search.earthdata.nasa.gov/"},{"collection":"GPM_2BCMB_07","kind":"stac-api","notes":"Verified native publisher collection on 2026-10-02. Native metadata license: CC0-1.0. Product citation, quality guidance and Earthdata download authentication apply. Native footprints and observation intervals are preserved; archive availability and algorithm latency do not establish source freshness or a real-time service guarantee. Publisher archive end is preserved; the V08 combined STAC endpoint was absent at verification.","url":"https://cmr.earthdata.nasa.gov/stac/GES_DISC"},{"kind":"https","notes":"Primary NASA algorithm and scientific-use guidance; observe native quality and uncertainty information.","url":"https://gpm.nasa.gov/science/precipitation-algorithms"}],"all_weather":true,"bbox":[-180.0,-70.0,180.0,70.0],"category":"imagery","end":"2026-03-01","formats":["STAC","HDF5"],"gsd_m":5000.0,"id":"nasa-gpm-combined-profiles-v7","instruments":["DPR","GMI"],"keywords":["earth-observation","primary-source","stac","GPM_2BCMB_07","precipitation","gpm","profiles"],"latency_hours":null,"level":"L2B","license":"provider-terms","modalities":["atmospheric","weather-radar","microwave"],"night":true,"platforms":["GPM"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2014-03-08","summary":"Historical Version 07 combined DPR radar and GMI passive microwave precipitation profiles at nominal 5 km sampling. The registered publisher archive ends on 2026-03-01; it is not a current operational feed. Retain instrument-specific swaths, profile quality, attenuation and uncertainty information. These observation-based retrievals are not weather forecasts.","tasking":false,"tier":"product","title":"GPM DPR and GMI Combined Precipitation L2B 1.5 hours 5 km V07 (GPM_2BCMB)"},{"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://gpm.nasa.gov/data/imerg"},{"collection":"GPM_3IMERGHHE_07","kind":"stac-api","notes":"Official NASA Earthdata artifact geometry. Follow pagination for the complete search.","url":"https://cmr.earthdata.nasa.gov/stac/GES_DISC"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":null,"formats":["GeoTIFF","HDF","NetCDF"],"gsd_m":null,"id":"nasa-imerg-early","instruments":["Passive microwave radiometers","Infrared satellite observations"],"keywords":["earth-observation","weather","precipitation"],"latency_hours":null,"level":"L3","license":"us-public-domain","modalities":["atmospheric","microwave"],"night":false,"platforms":["GPM satellite constellation"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2026-09-29","summary":"GPM multi-satellite precipitation estimates with half-hourly products. Early Run targets lower latency; NASA documents approximately four-hour availability, rather than instantaneous observations.","tasking":false,"tier":"product","title":"GPM IMERG Early Run Precipitation"},{"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://gpm.nasa.gov/data/imerg"},{"collection":"GPM_3IMERGHH_07","kind":"stac-api","notes":"Official NASA Earthdata artifact geometry. Follow pagination for the complete search.","url":"https://cmr.earthdata.nasa.gov/stac/GES_DISC"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":null,"formats":["GeoTIFF","HDF","NetCDF"],"gsd_m":null,"id":"nasa-imerg-final","instruments":["Passive microwave radiometers","Infrared satellite observations"],"keywords":["earth-observation","weather","precipitation","archive"],"latency_hours":null,"level":"L3","license":"us-public-domain","modalities":["atmospheric","microwave"],"night":false,"platforms":["GPM satellite constellation"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2026-09-29","summary":"Research-oriented, gauge-adjusted multi-satellite precipitation products. Final Run arrives later than Early Run and is an archive/research product, not a live warning feed.","tasking":false,"tier":"product","title":"GPM IMERG Final Run Precipitation"},{"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 download authentication.","url":"https://search.earthdata.nasa.gov/"},{"collection":"GPM_3IMERGDF_07","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/GES_DISC"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":"2025-09-30","formats":["STAC","NetCDF","HDF5"],"gsd_m":null,"id":"nasa-imerg-final-daily","instruments":["Passive microwave radiometers","Infrared satellite observations"],"keywords":["earth-observation","primary-source","stac","GPM_3IMERGDF_07","atmospheric","microwave"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["atmospheric","microwave"],"night":false,"platforms":["GPM satellite constellation"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"1998-01-01","summary":"Daily Final Run precipitation estimates on a 0.1-degree grid. Gauge-adjusted research products arrive later than low-latency runs and are not a warning or forecast feed.","tasking":false,"tier":"product","title":"GPM IMERG Final Precipitation L3 1 day 0.1 degree x 0.1 degree V07 (GPM_3IMERGDF)"},{"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":"GPM_3IMERGHHL_07","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/GES_DISC"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":null,"formats":["STAC","NetCDF","HDF5"],"gsd_m":null,"id":"nasa-imerg-late-half-hourly","instruments":["Passive microwave radiometers","Infrared satellite observations"],"keywords":["earth-observation","primary-source","stac","GPM_3IMERGHHL_07","atmospheric","microwave"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["atmospheric","microwave"],"night":false,"platforms":["GPM satellite constellation"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"1998-01-01","summary":"Half-hourly Late Run precipitation estimates on a 0.1-degree grid. Sampling interval is distinct from publication latency; this is an observation retrieval, not weather prediction.","tasking":false,"tier":"product","title":"GPM IMERG Late Precipitation L3 Half Hourly 0.1 degree x 0.1 degree V07 (GPM_3IMERGHHL)"},{"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":"GPM_3IMERGM_07","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/GES_DISC"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":"2025-09-30","formats":["STAC","NetCDF","HDF5"],"gsd_m":null,"id":"nasa-imerg-final-monthly","instruments":["Passive microwave radiometers","Infrared satellite observations"],"keywords":["earth-observation","primary-source","stac","GPM_3IMERGM_07","atmospheric","microwave"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["atmospheric","microwave"],"night":false,"platforms":["GPM satellite constellation"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"1998-01-01","summary":"Monthly Final Run precipitation estimates for research and climate analysis. Retain publisher temporal availability and quality information; not current forecast guidance.","tasking":false,"tier":"product","title":"GPM IMERG Final Precipitation L3 1 month 0.1 degree x 0.1 degree V07 (GPM_3IMERGM)"},{"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 download authentication.","url":"https://search.earthdata.nasa.gov/"},{"collection":"GPM_3IMERGDE_07","kind":"stac-api","notes":"Verified native publisher collection on 2026-10-02. Native metadata license: CC0-1.0. Product citation, quality guidance and Earthdata download authentication apply. Native footprints and observation intervals are preserved; archive availability and algorithm latency do not establish source freshness or a real-time service guarantee. Nominal sampling is 0.1 degrees, not a constant metre GSD. Early/Late daily aggregation is not a forecast or the same as half-hourly processing latency.","url":"https://cmr.earthdata.nasa.gov/stac/GES_DISC"},{"kind":"https","notes":"Primary NASA algorithm and scientific-use guidance; observe native quality and uncertainty information.","url":"https://gpm.nasa.gov/data/imerg"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":null,"formats":["STAC","NetCDF","HDF5"],"gsd_m":null,"id":"nasa-gpm-imerg-early-daily","instruments":["Passive microwave radiometers","Infrared satellite observations"],"keywords":["earth-observation","primary-source","stac","GPM_3IMERGDE_07","precipitation","gpm","daily"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["atmospheric","microwave"],"night":false,"platforms":["GPM satellite constellation"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"1998-01-01","summary":"Daily Early Run precipitation estimates on a 0.1-degree grid, derived from multi-satellite microwave and infrared observations. The Early stream prioritizes lower latency; daily aggregation is distinct from half-hourly retrieval timing. Apply publisher quality and uncertainty guidance, especially over frozen surfaces, complex terrain and coasts. This observational estimate is not a weather forecast.","tasking":false,"tier":"product","title":"GPM IMERG Early Precipitation L3 1 day 0.1 degree x 0.1 degree V07 (GPM_3IMERGDE)"},{"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":"GPM_3IMERGDL_07","kind":"stac-api","notes":"Verified native publisher collection on 2026-10-02. Native metadata license: CC0-1.0. Product citation, quality guidance and Earthdata download authentication apply. Native footprints and observation intervals are preserved; archive availability and algorithm latency do not establish source freshness or a real-time service guarantee. Nominal sampling is 0.1 degrees, not a constant metre GSD. Early/Late daily aggregation is not a forecast or the same as half-hourly processing latency.","url":"https://cmr.earthdata.nasa.gov/stac/GES_DISC"},{"kind":"https","notes":"Primary NASA algorithm and scientific-use guidance; observe native quality and uncertainty information.","url":"https://gpm.nasa.gov/data/imerg"}],"all_weather":false,"bbox":[-180.0,-90.0,180.0,90.0],"category":"model","end":null,"formats":["STAC","NetCDF","HDF5"],"gsd_m":null,"id":"nasa-gpm-imerg-late-daily","instruments":["Passive microwave radiometers","Infrared satellite observations"],"keywords":["earth-observation","primary-source","stac","GPM_3IMERGDL_07","precipitation","gpm","daily"],"latency_hours":null,"level":"L3","license":"provider-terms","modalities":["atmospheric","microwave"],"night":false,"platforms":["GPM satellite constellation"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"1998-01-01","summary":"Daily Late Run precipitation estimates on a 0.1-degree grid. Late processing can incorporate additional satellite observations and forward/backward propagation relative to Early processing; this is not a gauge-adjusted Final Run product or a forecast. Daily observation intervals, source quality and uncertainties apply.","tasking":false,"tier":"product","title":"GPM IMERG Late Precipitation L3 1 day 0.1 degree x 0.1 degree V07 (GPM_3IMERGDL)"},{"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"},{"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":"SPL1CTB_E_004","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/spl1ctb_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-enhanced-brightness-temperature","instruments":["SMAP L-BAND RADIOMETER"],"keywords":["earth-observation","primary-source","stac","SPL1CTB_E_004","SMAP","passive microwave","9 km grid","half-orbit","geolocation advisory","brightness temperature","calibration"],"latency_hours":null,"level":"L1C","license":"provider-terms","modalities":["microwave"],"night":false,"platforms":["SMAP"],"pricing":null,"provider":"nasa","provider_name":"NASA Earthdata","revisit_hours":null,"score":1.0,"start":"2015-03-31","summary":"Calibrated and geolocated half-orbit SMAP passive L-band brightness temperatures enhanced with Backus-Gilbert interpolation and posted to 9 km EASE-Grid 2.0 global and polar grids. Grid posting is not the radiometer instrument resolution. Brightness temperature is a radiometric quantity rather than physical land temperature or a retrieved soil-moisture measurement. Apply calibration, interference and surface screening; native file geometry is artifact scope rather than every valid sample. 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":"preprocessed","title":"SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures V004"}],"returned":15,"total":15}