SMAP L3 Radiometer Global and Northern Hemisphere Daily 36 km EASE-Grid Freeze/Thaw State V004

This Level-3 (L3) product provides a daily composite of landscape freeze/thaw conditions retrieved by the Soil Moisture Active Passive (SMAP) radiometer from 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes. SMAP L-band brightness temperatures are used to derive freeze/thaw state and transition data, which are then resampled to both an Earth-fixed, Northern Hemisphere azimuthal 36 km Equal-Area Scalable Earth Grid (EASE-Grid 2.0), and to an Earth-fixed global 36 km EASE-Grid 2.0.

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Additional Info

Field	Value
Maintainer	NSIDC Services
Last Updated	March 27, 2025, 14:01 (UTC)
Created	February 19, 2025, 03:58 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_@context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id	https://data.nasa.gov/data.json
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy	https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation	SMAP L3 Radiometer Global and Northern Hemisphere Daily 36 km EASE-Grid Freeze/Thaw State V004. Version 004. Archived by National Aeronautics and Space Administration, U.S. Government, NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/LQQ5I3QVGFTU.
graphic-preview-description	This application allows you to interactively browse global satellite imagery within hours of it being acquired. You can also save it, share it, and download the underlying data.
graphic-preview-file	https://worldview.earthdata.nasa.gov/?v=-209,-81,159,89&l=SMAP_L3_Passive_Night_Freeze_Thaw(disabled=2),SMAP_L3_Passive_Day_Freeze_Thaw(disabled=2),Coastlines_15m,MODIS_Terra_CorrectedReflectance_TrueColor&t=2015-04-14
harvest_object_id	56bd7d74-f423-4ef9-9d6a-6677ae9eac87
harvest_source_id	b37e5849-07d2-41cd-8bb6-c6e83fc98f2d
harvest_source_title	DNG Legacy Data
identifier	C2938664170-NSIDC_CPRD
issued	2015-03-31
landingPage	https://doi.org/10.5067/LQQ5I3QVGFTU
language	{en-US}
metadata_type	geospatial
modified	2025-03-16
programCode	{026:001}
publisher	NASA NSIDC DAAC
resource-type	Dataset
source_datajson_identifier	true
source_hash	a39b4e75f94e1556895d5cd063be39eecc31670bac0b0b6bbf07fd3995c4dbc1
source_schema_version	1.1
spatial	-180.0 45.0 180.0 85.044
temporal	2015-03-31T00:00:00Z/2025-03-17T00:00:00Z
theme	{geospatial}