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
The Operational Land Imager (OLI) on Landsat 8 captured this image of the Potomac River and canal on September 27, 2016. The image shows the stretch between Hancock and Cumberland, Maryland—about 97 kilometers (60 miles) if you were to hike or bike along the towpath between these two towns. West Virginia is south of the river.
NASA has awarded a delivery order under the Rapid Spacecraft Acquisition III (Rapid III) contract to Orbital Sciences Corporation of Dulles, Virginia, known publicly as Orbital ATK, for the Landsat 9 spacecraft.
Acadia National Park is one of the most visited parks in America, drawing more than 2.5 million visitors per year to the craggy, jagged coast of Maine. The park is celebrating its 100th anniversary in 2016. On September 6, 2015, the Operational Land Imager (OLI) on the Landsat 8 satellite acquired these images of the park and its surroundings.
A team of scientists using NASA satellite data designed an automated system to quickly identify landslides that often go undetected and unreported.
NASA’s Restore-L Mission to Refuel Landsat 7, Demonstrate Crosscutting Technologies
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.
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.