Apr 25, 2011Landsat part of SERVIR’s Fire Management System Support in Guatemala

Contributors: Janet L. Anderson, NASA Marshall Space Flight Center In the last few years, fire incidence in Guatemala has increased, damaging and transforming wild areas into degraded forests, savannas and sterile lands. Atrocious events have been registered in which millions of hectares including forests and wild lands burned, in some cases recurrently. In Guatemala, a […]

Apr 21, 2011An Earth Day Celebration with Landsat

Source: MAGPI (Mid-Atlantic Gigapop in Philadelphia for Internet2) This Earth Day NASA’s Digital Learning Network (DLN) joined with the MAGPI group to explain how the Landsat program has helped scientists observe our planet since 1972. Landsat satellites have enabled people to study many aspects of our planet and to evaluate the dynamic changes caused by both […]

Apr 20, 2011Most Detailed Maps of Forest Height, Biomass, and Carbon Released

Source: Elizabeth Braun, Woods Hole Research Center The Woods Hole Research Center has released the first hectare-scale maps of canopy height, aboveground biomass, and associated carbon stock for the forests and woodlands of the conterminous United States. The multi-year project, referred to as the National Biomass and Carbon Dataset (NBCD), produced maps of these key […]

Apr 15, 2011Landsat 7 Turns 12

On this day in 1999, Landsat 7 was launched into orbit. Landsat 7 is the considered the most accurately calibrated Earth-observing satellite, i.e., its measurements are extremely accurate when compared to the same measurements made on the ground. Landsat 7’s excellent data quality, consistent global archiving scheme, and free data are hallmarks of its impressive […]

Apr 14, 2011Landsat: Who are the Customers?

Source: Natalie Sexton and Jennifer LaVista, USGS Who exactly who uses Landsat satellite imagery and what value do they derive from the information? In the first study of its kind, U.S. Geological Survey investigators surveyed a broad cross section of Landsat users to answer such questions. The short answer is that an expansive range of […]

Apr 13, 2011Understanding Disaster Aftermath in Japan

Contributors: Laura Rocchio and Julia Barsi After the violent March 11 Tohoku earthquake and devastating Japanese tsunami, the U.S. Geological Survey (USGS) coordinated a volunteer GIS-based analysis effort as part of the International Charter ‘Space and Major Disasters’.  Upon receiving a request for assistance from Japan Aerospace Exploration Agency (JAXA), the USGS activated a volunteer […]

Apr 5, 2011Global Land Survey 2010 Processing Begins

Source: Jan Nelson, USGS In the past, the USGS and NASA collaborated on the creation of four global land datasets using Landsat images: one from the 1970s and one each from circa 1990, 2000, and 2005. To extend this multi-decadal Landsat data collection, the USGS and NASA have again partnered to develop the Global Land […]