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  • Weddell Sea, Antarctica
  • Masthead platform instrument info DMSP/SSMI/I & SSMIS
  • Masthead date range 30 November 2017

Polynya in the Weddell Sea

The purplish/blue area in this image is a polynya, or area of open water, in the Antarctic sea ice. The yellow/orange area around the polynya is sea ice. The polynya formed around September 2, and by mid-September had grown to about 12,000 km2 (4,600 square miles). It persisted for nearly 90 days.

Tracking Sea Ice from Space

This image of sea ice brightness temperatures is from data collected by the Special Sensor Microwave/Imager (SSM/I) and Special Sensor Microwave Imager/Sounder (SSMIS) instruments aboard Defense Meteorological Satellite Program (DMSP) satellites. Purple/blue = warmer areas; orange/yellow = colder.


NASA's data policy ensures that all NASA data are available fully, openly, and without restrictions. Here's what this means to you.


The Earth Observing System Data and Information System is a key core capability in NASA’s Earth Science Data Systems Program. It provides end-to-end capabilities for managing NASA’s Earth science data from various sources—satellites, aircraft, field measurements, and various other programs.

User Profile: Dr. Kristine M. Larson

Who uses NASA Earth science data? Dr. Kristine M. Larson, to explore new ways of using remote sensing technologies.

Cyclone Kelvin over western Australia

Image captured on 18 February 2018, by the VIIRS instrument, on board the joint NOAA/NASA Suomi-NPP satellite.

Webinar: NASA GLOBE Clouds, Matching Cloud Observations from Citizen Scientists with Satellite Data

Event Date: February 28, 2018

NASA GLOBE Clouds is an international citizen science program that collects cloud observations from trained and untrained participants around the world and compares them with satellite data. Join us to learn more about the benefits and limitations of this citizen science data for scientific inquiry.

To the lighthouse

Where is the water going in the Great Lakes?

Webinar: Striking New Spatial Bounds Using ISS LIS Data

Event Date: March 7, 2018

Join us to learn how the new International Space Station (ISS) Lightning Imaging Sensor (LIS) data can be used within Python, GIS and other applications to study lightning that occurred during the 2017 hurricane season.

EOSDIS SIPS and their Role Ensuring Consistent Long-Term Global Observations of Atmospheric Ozone

The OMI and OMPS Science Investigator-led Processing Systems (SIPS) ensure that ozone data collected by instruments aboard the Aura and Suomi-NPP satellites reach global users.

OMPS Near Real-Time Data Now Available Through LANCE

Near real-time ozone and sulfur dioxide data products from the OMPS instrument are now available through the Land, Atmosphere Near real-time Capability for EOS (LANCE) system.

Getting Ready for NISAR—and for Managing Big Data using the Commercial Cloud

The upcoming NISAR satellite mission is expected to add as much as 85 TB of data each day to the EOSDIS archive. The commercial cloud is being explored as a way to archive and disseminate this extremely high volume of data efficiently.

Bringing Light to the Night: New VIIRS Nighttime Imagery Available through GIBS

New imagery products available through GIBS provide stunning views of Earth at night.

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