• NSIDC DAAC is currently upgrading our data ingest process for NASA Earthdata Cloud. During this transition, users may notice temporary interruptions in data availability or notice small data gaps. All gaps will be resolved as quickly as possible. During this upgrade jpeg browse imagery will also not be available for preview in Earthdata search. Please reach out to NSIDC User Services with any questions or concerns.

  • The NSIDC DAAC is retiring access to its legacy, on-premises data archive and transitioning to the NASA Earthdata Cloud as the primary data archive. View planned retirement dates here.

Soil Moisture Active Passive (SMAP) L1-L3 Ancillary Static Data, Version 1
Data set id:
SMAP_L1_L3_ANC_STATIC
DOI: 10.5067/HB8BPJ13TDQJ
This is the most recent version of these data.
Version Summary
Initial release

Overview

This ancillary SMAP product contains more than 50 data sets. These data sets contain the inputs necessary to create SMAP products from raw instrument counts, such as permanent masks (land, water, forest, urban, mountain, etc.), the grid cell average elevation and slope derived from a Digital Elevation Model (DEM), permanent open water fraction, soils information (primarily sand and clay fraction), vegetation parameters, and surface roughness parameters.
Parameter(s):
DIGITAL ELEVATION/TERRAIN MODEL (DEM)
LAND USE/LAND COVER CLASSIFICATION
NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)
SOIL CLASSIFICATION
SOIL TEXTURE
SURFACE ROUGHNESS
Platform(s):
NOT APPLICABLE
Sensor(s):
NOT APPLICABLE
Data Format(s):
Binary
HDF5
ASCII
Temporal Coverage:
  • 14 January 2015 to present
Temporal Resolution:
  • Not applicable
Spatial Resolution:
  • not applicable
  • not applicable
Spatial Reference System(s):
Not Specified
Spatial Coverage:
  • N:
    86.4
    S:
    -86.4
    E:
    180
    W:
    -180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.

Data Access & Tools

A free NASA Earthdata Login account is required to access these data. Learn More

Documentation

General Resources

Help Articles

General Questions & FAQs

This article covers frequently asked questions about the NASA NSIDC DAAC's Earthdata cloud migration project and what it means to data users.
SMAP Ancillary data sets are used to produce SMAP Level-1, -2, -3, and -4 standard data products.
The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is migrating its primary data access from its legacy, on-premises archive to the NASA Earthdata Cloud.

How to Articles

Many NSIDC DAAC data sets can be accessed using NSIDC DAAC's Data Access Tool. This tool provides the ability to search and filter data with spatial and temporal constraints using a map-based interface.Users have the option to: