What’s Going On?

++Important TIRS calibration notice from USGS, Jan. 6, 2014: “Due to the larger calibration uncertainty associated with TIRS band 11, it is recommended that users refrain from relying on band 11 data in quantitative analysis of the TIRS data, such as the use of split window techniques for atmospheric correction and retrieval of surface temperature values.”

We suggest that Band 10 be used in conjunction with an atmospheric model to estimate surface brightness temperature. Our calibration team has found that with current processing these surface brightness temperatures are accurate to within ~±1 K for many 15 – 35° C targets, e.g., growing season vegetated targets.

For more details, please visit the Landsat 8 Data Users Handbook

Jul 7, 2016 • As the Rains Start: Using NASA Data to Automatically Detect Potential Landslides in Nepal

A team of scientists using NASA satellite data designed an automated system to quickly identify landslides that often go undetected and unreported.

Jun 23, 2016 • NASA’s Restore-L Mission to Refuel Landsat 7, Demonstrate Crosscutting Technologies

NASA’s Restore-L Mission to Refuel Landsat 7, Demonstrate Crosscutting Technologies

Jun 22, 2016 • Pervasive Ice Retreat in West Antarctica

Along the Bellingshausen Sea coast of West Antarctica, ice has been retreating inland being lost to the sea. Scientists knew this, but they lacked a full picture of the scale. Now a team of researchers has compiled a Landsat-based data set and found that such losses have been going on for at least the past four decades.

Jun 2, 2016 • NASA Studies Details of a Greening Arctic

The northern reaches of North America are getting greener. In a changing climate, almost a third of the land cover – much of it Arctic tundra – is looking more like landscapes found in warmer ecosystems.

May 16, 2016 • Fort McMurray Fires Continue in Alberta

On May 12, 2016, a total of 17 wildfires were still burning in the vicinity of Fort McMurray, Canada.

Apr 25, 2016 • Ice Scours the North Caspian Sea

The Operational Land Imager (OLI) on NASA’s Landsat 8 satellite acquired this large natural-color image showing a wide view of the Caspian Sea around the Tyuleniy Archipelago on April 16, 2016. Ocean scientist Norman Kuring of NASA’s Goddard Space Flight Center found a puzzling feature in the image — lines crisscrossing the North Caspian Sea.

Mar 11, 2016 • Satellites and Shipwrecks: Landsat Satellite Spots Foundered Ships in Coastal Waters

While there is a romantic association of shipwrecks and buried treasure, it is desirable to know where they are located for many other practical reasons.