Skip to main content
U.S. flag

An official website of the United States government

SMAP L3 Radar Northern Hemisphere Daily 3 km EASE-Grid Freeze/Thaw State V003

Published by NASA NSIDC DAAC | National Aeronautics and Space Administration | Catalog Last Checked: August 04, 2025 at 10:51 AM | Dataset Last Updated: April 01, 2025
This Level-3 (L3) product provides a daily composite of Northern Hemisphere landscape freeze/thaw conditions retrieved by the Soil Moisture Active Passive (SMAP) radar from 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes. SMAP L-band backscatter data are used to derive freeze/thaw data, which are then resampled to an Earth-fixed, Northern Hemisphere azimuthal 3 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0).

Resources

10 resources available

  • Download this dataset

    HTML
    Download

  • Download this dataset

    HTML
    Download

  • Download this dataset

    HTML
    Download

  • Download this dataset

    HTML
    Download

  • View documentation related to this dataset

    HTML
    Download

  • Download this dataset through Earthdata Search

    HTML
    Download

  • Download this dataset through Earthdata Search

    HTML
    Download

  • This dataset's landing page

    HTML
    Download

  • Google Scholar search results

    HTML
    Download

  • Get a related visualization through WORLDVIEW

    HTML
    Download

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "NSIDC Services",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:nsidc@nsidc.org"
}
description This Level-3 (L3) product provides a daily composite of Northern Hemisphere landscape freeze/thaw conditions retrieved by the Soil Moisture Active Passive (SMAP) radar from 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes. SMAP L-band backscatter data are used to derive freeze/thaw data, which are then resampled to an Earth-fixed, Northern Hemisphere azimuthal 3 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0).
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Data Access link for ITSD project",
    "downloadURL": "https://nsidc.org/data/data-access-tool/SPL3FTA/versions/3/"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Data Access link for ITSD project",
    "downloadURL": "https://nsidc.org/data/data-access-tool/SPL3FTA/versions/3/"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Direct download via HTTPS protocol.",
    "downloadURL": "https://n5eil01u.ecs.nsidc.org/SMAP/SPL3FTA.003/"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Direct download via HTTPS protocol.",
    "downloadURL": "https://n5eil01u.ecs.nsidc.org/SMAP/SPL3FTA.003/"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Includes a user's guide, supplemental documents like ATBDs and academic papers, How Tos, FAQs, etc.",
    "downloadURL": "https://doi.org/10.5067/CPSA0M496MGB"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset through Earthdata Search",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "NASA's newest search and order tool for subsetting, reprojecting, and reformatting data.",
    "downloadURL": "https://search.earthdata.nasa.gov/search/granules?p=C1236303849-NSIDC_ECS&m=-20.109375%2114.0625%211%211%210%210%2C2&q=SPL3FTA"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset through Earthdata Search",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "NASA's newest search and order tool for subsetting, reprojecting, and reformatting data.",
    "downloadURL": "https://search.earthdata.nasa.gov/search/granules?p=C1236303849-NSIDC_ECS&m=-20.109375%2114.0625%211%211%210%210%2C2&q=SPL3FTA"
  },
  {
    "@type": "dcat:Distribution",
    "title": "This dataset's landing page",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Provides access to data, documentation, tools, citation information, support, and other resources.",
    "downloadURL": "https://doi.org/10.5067/CPSA0M496MGB"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Google Scholar search results",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Search results for publications that cite this dataset by its DOI.",
    "downloadURL": "https://scholar.google.com/scholar?q=10.5067%2FCPSA0M496MGB"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Get a related visualization through WORLDVIEW",
    "format": "HTML",
    "mediaType": "text/html",
    "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.",
    "downloadURL": "https://goo.gl/EOWRRf"
  }
]
identifier C1236303849-NSIDC_ECS
issued 2015-04-13
keyword 
[
  "cryosphere",
  "earth-science",
  "radar",
  "snow-ice",
  "spectral-engineering"
]
landingPage https://doi.org/10.5067/CPSA0M496MGB
language 
[
  "en-US"
]
modified 2025-04-01
programCode 
[
  "026:001"
]
publisher 
{
  "name": "NASA NSIDC DAAC",
  "@type": "org:Organization"
}
spatial -180.0 45.0 180.0 85.044
temporal 2015-04-13T00:00:00Z/2015-07-07T23:59:59.999Z
theme 
[
  "geospatial"
]
title SMAP L3 Radar Northern Hemisphere Daily 3 km EASE-Grid Freeze/Thaw State V003

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov