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

Jan 25, 2016 • NASA Provides a Look at Post-Blizzard Snowfall and Winds

NASA satellites obtained a number of different views of the great winter storm that left many snowfall records from Virginia to New York City from January 22 to 24, 2016.

Jan 13, 2016 • Satellite Data Help Australian Ranchers Meet the Rising Demand for Meat in a Changing World

NASA satellites are helping farmers and ranchers meet growing worldwide demand for food, meat and other agricultural products.

Dec 31, 2015 • NASA Awards Letter Contract for Landsat 9 Imager-2

NASA has awarded a sole source letter contract to Ball Aerospace & Technologies Corporation, Boulder, Colo., to build the Operational Land Imager-2 instrument for the Landsat 9 project.

Oct 28, 2015 • Land-Facing, Southwest Greenland Ice Sheet Movement Decreasing

In the face of decades of increasing temperatures and surface melting, the movement of the southwest portion of the Greenland Ice Sheet has been slowing down

Oct 14, 2015 • Tracking Agricultural Water Use on a Smartphone

This fall scientists developed an application called EEFLUX, which will allow anyone in the world to produce field-scale maps of water consumption.

Oct 5, 2015 • NASA/USGS Mission Helps Answer: What Is a Forest?

With deforestation responsible for up to one-sixth of greenhouse gas emissions, accurate measurement of global forests is crucial to carbon cycle studies.

Sep 29, 2015 • Landsat Images Advance Watershed Restoration in Western Tanzania

The Jane Goodall Institute used Landsat imagery from 1972 and 1999 to calculate the loss of forest and woodland cover.