In this series of Landsat images, sensors detected light reflecting off Earth in the short wave-infrared, near-infrared and green portions of the electromagnetic spectrum. With this combination of wavelengths, new vegetation appears bright green while dry vegetation...
Giant Salty Stripe Winds Toward Caspian Sea
The Sor Kaydak in Kazakhstan is a salt marsh that leads into the northeastern bulb of the Caspian Sea. The central 50 kilometers of the 180-kilometer marsh depression is shown in this photograph from the International Space Station.
Loss of Envisat Satellite Affecting European Union Program
The European Union's Global Monitoring for Environment and Security program already is feeling the loss of Envisat, adding further urgency to launch the planned Sentinel mission.
Sending Drones into the Eye of the Storm
Beginning this summer and for several years, NASA will send drones dubbed severe storm sentinels above severe storms to uncover hurricane formation and intensity-change information.
Aqua Satellite Spots Australian Anti-Storm
High-pressure weather systems often bring fair weather and relatively clear skies. In early June 2012, a high off the coast of Tasmania did just that”and in spectacular fashion.
Colorado Wildfire Exceeds 37,000 Acres, Claims Life
On June 11, at the same time the wind forced Colorado's massive High Park fire to blow back on itself, authorities confirmed what they had feared for a day”the 37,000-acre blaze had taken a life.
Buying Optical Satellite Imagery?
By Nick Hubing, president, Land Info Worldwide Mapping (www.landinfo.com), Denver. A little more than a decade ago, the only satellite imagery most people saw was a weather map on a TV broadcast. That changed with the launch of IKONOS in 1998, when the world’s...
Looming Budget Cuts
Litigation is the basic legal right that guarantees every corporation its decade in court. —David Porter, American Naval Officer, 1813-1891 The future of U.S. government agreements to purchase commercial optical satellite imagery is in limbo, and the natives...
Landsat Has Many Fans, But Needs
By Marcia S. Smith, editor, SpacePolicyOnline.com. The Landsat land remote sensing satellite program is about to celebrate its 40th anniversary onJuly 23, 2012. While users remain enthusiastic about current Landsat data and the long-term data set enabled by...
NGA's Self-Service POD Improves
By Bob Hicks, technical executive, Office of the Americas, National Geospatial-Intelligence Agency (www.nga.mil), Springfield, Va. The National Geospatial-Intelligence Agency (NGA) Point of Distribution (POD) gives customers on-demand access to NGA’s homeland...
