Alaska Satellite Facility
Delivering Remote Sensing Data Since 1991

SMAP Launch Date: 
January 2015

First Mission Data:
Summer 2015 

NASA has designated two Distributed Active Archive Centers (DAACs) to hold the SMAP archive. The ASF SAR DAAC will archive and distribute the Level 1 radar products. The NSIDC DAAC will archive and distribute the radiometer and Level 2-4 products.

ASF and NSIDC are working together to provide seamless services to users, regardless of the data product. SMAP data will be available for download via all of ASF's data-access tools.
Through the ASF API and Vertex, users may discover and access the SMAP Level 1 radar products, as well as ASF-held, related data products including: 
  • Seasat image data
  • Advanced Land Observing Satellite-Phased Array L-band SAR (ALOS-PALSAR) image data
  • Japanese Earth Resources Satellite-1 (JERS-1) image data
  • European Remote Sensing Satellite-1 (ERS-1/ERS-2) image data
  • RADARSAT-1 image data
  • Jet Propulsion Laboratory (JPL) Uninhabited Aerial Vehicle (UAVSAR) image data
  • Airborne Synthetic Aperture Radar (AirSAR) image data

Data Availability

SMAP data management is governed by NASA's Earth Science Data Policy (adopted in 1991). NASA has developed policy implementation, practices, and nomenclature that Earth science missions use to comply with policy tenets.

NASA Earth Science Data Policy
Data Level Definitions (correspond to NASA EOSDIS definitions)
Data Maturity Levels (including "beta" and "validated")

Files Removed from the SMAP L1B and L1C RADAR Dataset
On June 7, 2016, the SP_01966_A_002 and SP_01966_A_003 files were removed from the SMAP L1C RADAR dataset, due to a problem with the Antenna Azimuth file used to process this half-orbit. The SMAP Science Data System (SDS) is working to correct the Antenna Azimuth file and regenerate these half-orbits. Once ASF receives the new file, it will be made available through Vertex and EarthData Search.

Get SAR Data

Get SAR Data

Select and download SAR data online using Vertex.

Use the ASF API for downloading SAR data via a command line.