August 2013

Leonard Lopate
Aug 8, 2013Environmental Monitoring with Public Domain Satellites

WNYC's Leonard Lopate talks with SkyTruth president, John Amos, about using public domain satellite imagery, such as Landsat, to monitor the environment. SkyTruth uses all types of satellite imagery to monitor environmental changes and [...]

May 9, 2013Landsat Images Provide the Gold Standard for New Earth Applications

Images from Landsat satellites provided free to the public by the Department of the Interior's U.S. Geological Survey were the starting points for “a new breakthrough” reported today by Time and announced on the Official Google Blog. Using its [...]

Estimated mean annual ratio of ET to P
Feb 19, 2013New Maps Provide Crucial Information for Water Managers

For the first time, U.S. Geological Survey scientists have mapped long-term average evapotranspiration rates across the continental United States—a crucial tool for water managers and planners because of the huge role evapotranspiration plays in [...]

Feb 1, 2013Landsat Monitors Chesapeake Bay Change

Landsat is a critical and invaluable tool for characterizing the landscape and mapping it over time. Landsat data provides a baseline of observations for science about how human activities on the land affect water quality, affect wildlife [...]

Jan 22, 2013What is the Economic Value of Satellite Imagery?

Does remote-sensing information, such as that from Landsat and similar Earth-observing satellites, provide economic benefits to society, and can this value be estimated? Using satellite data for northeastern Iowa, U.S. Geological Survey [...]

Cladophora on shore of N. Manitou Island
Sep 26, 2012Using Landsat to Map Cladophora in the Great Lakes

Cladophora, a nuisance, native green algae that grows attached to solid substrate in all of the Laurentian Great Lakes, has expanded its range partially due to invasive quagga and zebra mussels. During significant storm events it detaches and [...]

Dr. Martha Anderson, research scientist, USDA
Aug 26, 2012Mapping Water Use from Space

[Source: Library of Congress] Dr. Martha Anderson, research scientist, USDA, talks about using images from the Landsat satellite program to monitor water use and drought on U.S. farms with pinpoint accuracy to measure evapotranspiration, the [...]

Precipitation patterns of Tibetan Plateau
Aug 8, 2012Changing Precipitation Patterns Impacting Tibetan Plateau Glaciers

In the July issue of Nature Climate Change, Tandong Yao and colleagues report on the changing status of Tibetan Plateau glaciers over the past three decades. Using an array of data sources including Landsat (MSS, TM, and ETM+), the researchers [...]

Chesapeake Bay region
Jun 19, 2012EarthSky Interview with Peter Claggett: Seeing Chesapeake Bay Changes with Landsat

Satellite images show big changes happening to Chesapeake Bay, the largest estuary in the U.S., where freshwater meets the sea. Peter Claggett is a research geographer with the U.S. Geological Survey's Eastern Geographic Science Center. [...]

Apr 26, 2012Landsat Satellites See Texas Crop Circles

A water-rich polka dot pattern takes over the traditional rectangular patchwork of fields in this time series animation of 40 years of Landsat images. In the dry Texas panhandle near the town of Dalhart, this transformation is due to [...]