February 2013


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 [...]

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 [...]

Soybean Crops in Brazil / Paraguay
Aug 29, 2012Landsat Adds Tremendous Value to Decision-Making and Bottom Line

Dr. Stephanie Hulina, President of Geospatial Data Analysis Corporation (GDA Corp) discusses how access to free Landsat imagery from USGS enables her business to provide value-added products to her company's clients. The long-term continuity of [...]

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 [...]

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 [...]

The fragile semi-arid Souss region of Agadir, Morocco
Apr 1, 2012Managing a Fragile Environment in Morocco

The Souss region of Agadir, Morocco is a fragile semi-arid area that is important to Morocco's fruit and vegetable agriculture industry. To better manage this vulnerable region a French-Moroccan collaboration is using a high-speed network for [...]

Saudi Arabia fields
Mar 29, 2012Fields of Green Spring up in Saudi Arabia

The green fields that dot the desert draw on water that in part was trapped during the last Ice Age. In addition to rainwater that fell over several hundred thousand years, this fossil water filled aquifers that are now buried deep under the [...]

Landsat 8
Feb 2, 2012A New Way To Map Drought and Water Use Worldwide

Every month, the National Oceanic and Atmospheric Administration's (NOAA) Center for Climate Prediction has a drought briefing by teleconference to identify the latest drought areas in North America. ARS scientists Martha Anderson and Bill [...]

girl eating corn
Feb 1, 2012It Takes a Satellite To Feed the World

Source: Charles L. Walthall, USDA Agricultural Research Service Forum It's ironic that just when Earth-monitoring satellites are needed more than ever to address the food and freshwater demands of a burgeoning global human population, we face an [...]

cow
Nov 30, 2011Beef Productivity Study Utilizes Landsat

In an effort to help Australian beef producers determine if intensive grazing systems are needed to remain competitive, a new report has analyzed various grazing systems in Queensland, Australia. Landsat data was used to help trend pasture [...]