SMAP Radar Twice-Daily SAR and SIR-Enhanced Scatterometer EASE-Grid 2.0 Radar Backscatter V001

This data set contains twice-daily synthetic aperture radar (SAR) and enhanced-resolution scatterometer radar backscatter derived from SMAP radar data. Data are available on the Northern Hemisphere, Southern Hemisphere, Temperate, and Mid-Latitude (sub-set of Global) EASE-Grid 2.0 projections and as either 25 km or 3.125 km resolution grids. This new product uses the drop-in-the bucket gridding (GRD) algorithm and Scatterometer Image Reconstruction (SIR) algorithm to process the individual swath-based data from the input data sets into twice-daily images, producing SAR images (high-resolution), slice and footprint images (both lower-resolution), respectively. Note, that as a companion product, the radiometer form of the SIR algorithm (rSIR) was used to derive brightness temperatures from SMAP radiometer data for the SMAP Radiometer Twice-Daily rSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures, Version 2, data set (NSIDC-0738).

Data and Resources

Additional Info

Field Value
Maintainer NSIDC Services
Last Updated March 31, 2025, 18:14 (UTC)
Created March 31, 2025, 18:14 (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 Radar Twice-Daily SAR and SIR-Enhanced Scatterometer EASE-Grid 2.0 Radar Backscatter V001. Version 1. Archived by National Aeronautics and Space Administration, U.S. Government, NASA NSIDC DAAC. https://doi.org/10.5067/SCKWZSWQ7HPL.
harvest_object_id 37a10572-4e07-4401-9a7f-cb09d9f05d09
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2568349136-NSIDC_ECS
issued 2015-04-19
landingPage https://doi.org/10.5067/SCKWZSWQ7HPL
language {en-US}
metadata_type geospatial
modified 2015-07-12
programCode {026:001}
publisher NASA NSIDC DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 5c52d205ad1f99578010ca9e62a00d84760fc76d09d7ff92c77d2f79cd2aeddf
source_schema_version 1.1
spatial -180.0 -90.0 180.0 90.0
temporal 2015-04-13T00:00:00Z/2015-07-12T23:59:59.999Z
theme {geospatial}