Alaska Satellite Facility
Delivering Remote Sensing Data Since 1991
Find Sentinel-1 DataData Feeds

About Sentinel-1

The Sentinels are a new fleet of European Space Agency (ESA) satellites, developed to deliver a wealth of data and imagery central to Europe’s Copernicus program.

The first in the series, Sentinel-1, includes twin satellites that each carry C-band synthetic aperture radar (SAR), together providing all-weather, day-and-night imagery of Earth’s surface.

Sentinel-1A was launched on 3 April 2014 and Sentinel-1B on 25 April 2016. They orbit 180° apart, together imaging the entire Earth every six days.

The mission benefits numerous services, such as monitoring of Arctic sea-ice extent, routine sea-ice mapping, and surveillance of the marine environment. Applications include oil-spill monitoring and ship detection for maritime security; monitoring land-surface for motion risks; mapping for forest, water, and soil management; and mapping to support humanitarian aid and crisis situations.

International Collaboration

Sentinel-1 is the result of close collaboration among ESA, the European Commission, industry, service providers, and data users.

NASA's provision of the complete ESA Sentinel-1 SAR data archive through the ASF DAAC is by agreement between the U.S. State Department and the European Commission (EC). As part of the Earth-observation Copernicus program, the Sentinel mission will provide scientists with accurate, timely, and easily accessible information to help shape the future of our planet.

Content on ASF's Sentinel web pages is adapted from ESA's Sentinel website.

This interferogram combines SAR images over the same area of southern Romania acquired by Sentinel-1A on 9 June 2016 and Sentinel-1B on 15 June. Bucharest is near the lower right corner of the image. The colors are related to terrain topography. ESA/Norut 2016, contains modified Copernicus Sentinel data 2016, processed by ESA.This interferogram combines SAR images over the same area of southern Romania acquired by Sentinel-1A on 9 June 2016 and Sentinel-1B on 15 June. Bucharest is near the lower right corner of the image. The colors are related to terrain topography. ESA/Norut 2016, contains modified Copernicus Sentinel data 2016, processed by ESA.
A dual-polarization 2014 Sentinel-1A SAR image shows Jordan's large Zaatari refugee camp, for people displaced by conflict in neighboring Syria. The image helps show the promise of Sentinel imagery for use in management of humanitarian crises such as refugee camps. © Copernicus Sentinel data 2014, processed by ESA.A dual-polarization 2014 Sentinel-1A SAR image shows Jordan's large Zaatari refugee camp, for people displaced by conflict in neighboring Syria. The image helps show the promise of Sentinel imagery for use in management of humanitarian crises such as refugee camps. © Copernicus Sentinel data 2014, processed by ESA.
A Sentinel-1A image of Italy's Mt. Vesuvius Supersite helps reveal how close populated areas (red) are to the volcano. Sentinel data will facilitate monitoring of geohazards and management of natural disasters. © Copernicus Sentinel data 2014, processed by ESA.A Sentinel-1A image of Italy's Mt. Vesuvius Supersite helps reveal how close populated areas (red) are to the volcano. Sentinel data will facilitate monitoring of geohazards and management of natural disasters. © Copernicus Sentinel data 2014, processed by ESA.
A closer view of the same Mt. Vesuvius image that is in the previous slide shows more detail of this volcano Supersite. Sentinel data will facilitate monitoring of geohazards and management of natural disasters. © Copernicus Sentinel data 2014, processed by ESA.A closer view of the same Mt. Vesuvius image that is in the previous slide shows more detail of this volcano Supersite. Sentinel data will facilitate monitoring of geohazards and management of natural disasters. © Copernicus Sentinel data 2014, processed by ESA.
This image of the swirling landscape of Iran’s salt desert, Dasht-e Kavir, combines three Sentinel-1A SAR images from Jan., Feb., and March 2016. The brushstroke patterns are geological layers eroded mostly by wind. Changes between the acquisitions appear in bright colors – such as the blues, reds, and greens on the left half of the image. The colors show fluctuations in the amount of water. ESA 2016, contains modified Copernicus Sentinel data 2016, processed by ESA.This image of the swirling landscape of Iran’s salt desert, Dasht-e Kavir, combines three Sentinel-1A SAR images from Jan., Feb., and March 2016. The brushstroke patterns are geological layers eroded mostly by wind. Changes between the acquisitions appear in bright colors – such as the blues, reds, and greens on the left half of the image. The colors show fluctuations in the amount of water. ESA 2016, contains modified Copernicus Sentinel data 2016, processed by ESA.
The Marmara region of Turkey, shown here in a dual-polarization Sentinel-1A SAR image, is the most densely populated region of Turkey — and also is an earthquake Supersite. Sentinel data will facilitate monitoring of geohazards and management of natural disasters. © Copernicus Sentinel data 2014, processed by ESA.The Marmara region of Turkey, shown here in a dual-polarization Sentinel-1A SAR image, is the most densely populated region of Turkey — and also is an earthquake Supersite. Sentinel data will facilitate monitoring of geohazards and management of natural disasters. © Copernicus Sentinel data 2014, processed by ESA.
The San Andreas Fault in California, near Bakersfield (to the right), is visible in this Sentinel-1A SAR image as a roughly diagonal, serrated line starting in the lower right corner and extending left and up into the right side of a valley between mountains. © Copernicus Sentinel data 2014, processed by ESA.The San Andreas Fault in California, near Bakersfield (to the right), is visible in this Sentinel-1A SAR image as a roughly diagonal, serrated line starting in the lower right corner and extending left and up into the right side of a valley between mountains. © Copernicus Sentinel data 2014, processed by ESA.
The ability to track traffic and marine conditions in The Netherlands' Port of Rotterdam, day and night, through all weather, shows Sentinel's promise for facilitating marine monitoring and management. The Port of Rotterdam is one of the world's busiest ports. © Copernicus Sentinel data 2014, processed by ESA.The ability to track traffic and marine conditions in The Netherlands' Port of Rotterdam, day and night, through all weather, shows Sentinel's promise for facilitating marine monitoring and management. The Port of Rotterdam is one of the world's busiest ports. © Copernicus Sentinel data 2014, processed by ESA.
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.