Delivery of Suomi National Polar-orbiting Partnership (Suomi NPP) satellite data products will cease on November 1, 2026. Data users should transition now to alternative products from NOAA-21 and NOAA-20. Suomi NPP data announcement

Sentinel-1 C-SAR Resources

Earthdata resources for users working with NASA’s Sentinel-1 C-band Synthetic Aperture Radar data include tutorials and other learning resources, news announcements such as instrument updates and data releases, user guides and related documents, and frequently asked questions.

Sentinel-1 C-SAR Learning Resources

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NASA OPERA-DISP measured local surface velocity between 2016 and 2024 for an agricultural region on the Nevada-California border. Blue shades represent movement away from the observing satellite (primarily downward motion) and red shades represent motion towards the observing satellite (primarily upward motion).

Discover and Access the OPERA-DISP Dataset Using ASF DAAC’s Displacement Portal

Join us on Thursday, May 29, to learn about the NASA JPL OPERA Surface Displacement (OPERA-DISP) dataset and how to access and explore the data using ASF DAAC's Displacement Portal.

Webinar

May 14, 2025

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Create and Unwrap an Interferogram with GMT5SAR Script in the Cloud — Windows

Learn how to create and unwrap an interferogram with GMT5SAR script in the cloud for Windows in NASA’s Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC) tutorial.

Tutorial

Feb. 3, 2025

Earthdata grapic identifier on patterned background

Create and Unwrap an Interferogram with GMT5SAR Script in the Cloud — OS X

Learn to create and unwrap an interferogram with GMT5SAR script in the cloud — OS X in this data recipe from NASA’s Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC).

Data Recipe

Feb. 3, 2025

Earthdata graphic identifier on top of map of Earth and binary code

Unwrapped Interferograms: Creating a Deformation Map

Learn how to create a deformation map from unwrapped interferograms in this data recipe from NASA’s Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC).

Data Recipe

Feb. 3, 2025

A composite image of an earthquake in Chile of interferometer and Landsat imagery.

Burst-Based InSAR for Sentinel-1 On Demand

Order Sentinel-1 interferometric synthetic aperture radar (InSAR) products On Demand from NASA’s Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC) for individual SLC bursts.

StoryMap

Nov. 1, 2024

Phase Unwrap an Interferogram

Learn how to phase unwrap an interferogram in this data recipe from NASA’s Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC).

Data Recipe

Oct. 18, 2024

This image shows a subsetted Unwrapped Phase Sentinel-1 InSAR product (black & white) layered on the original Sentinel-1 InSAR Unwrapped Phase product (color)

Acquire and Subset Sentinel-1 InSAR Data with Harmony and the GDAL Subsetter

This data recipe provides steps to construct a Harmony request URL to find S-1 InSAR data and perform subsetting using the GDAL Subsetter.

Data Recipe

Oct. 2, 2024

This image provides before and after RTC of the Bolivian mountains (left -before, right - after)

Radiometrically Terrain-Correct (RTC) Sentinel-1 Data Using GAMMA Software

This data recipe shows users how to use GAMMA software and scripts for high-quality results to correct distortions in SAR images.

Data Recipe

Oct. 2, 2024

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Sentinel-1 C-SAR News

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SMAP's rotating golden antenna functions like a satellite dish to focus radio waves from Earth's surface into a collector on the spacecraft

Rounding up Data with a Golden Lasso: Getting Soil Moisture Data from SMAP to DAAC

NASA's SMAP team turns raw satellite data into more than a dozen data products for data users around the world.

Feature Article

Nov. 4, 2020

New RTC Stacking Tool for analyzing SAR imagery at ASF DAAC

New Tool for Analyzing SAR Imagery

The ASF DAAC’s RTC Stacking Tool helps facilitate time-series analysis.

Feature Article

Nov. 4, 2020

A farmer harvests rice at a field in Laguna, Philippines.

When the Big Picture is Not Enough

A researcher pushes the limits of radar data to monitor small rice fields in the Philippines.

Feature Article

July 28, 2020

The image above shows an ERS-2 SAR image of coastal water off the Pacific coast of Mexico in 1996.

Data Made Easy

Software development is essential for making SAR datasets user friendly.

Feature Article

July 21, 2020

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Sentinel-1 C-SAR Resources

Sentinel-1 C-SAR Learning Resources

Discover and Access the OPERA-DISP Dataset Using ASF DAAC’s Displacement Portal

Create and Unwrap an Interferogram with GMT5SAR Script in the Cloud — Windows

Create and Unwrap an Interferogram with GMT5SAR Script in the Cloud — OS X

Unwrapped Interferograms: Creating a Deformation Map

Burst-Based InSAR for Sentinel-1 On Demand

Phase Unwrap an Interferogram

Acquire and Subset Sentinel-1 InSAR Data with Harmony and the GDAL Subsetter

Radiometrically Terrain-Correct (RTC) Sentinel-1 Data Using GAMMA Software

Sentinel-1 C-SAR News

Rounding up Data with a Golden Lasso: Getting Soil Moisture Data from SMAP to DAAC

New Tool for Analyzing SAR Imagery

When the Big Picture is Not Enough

Data Made Easy

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