by Staff Writers
Pasadena CA (JPL) Aug 01, 2011
Northeast Africa continues to reel from the effects of the worst drought to strike the region in decades. The arid conditions are contributing to famines that the U.S. Department of State says are affecting more than 11.5 million people, particularly in Somalia, Ethiopia, Kenya and Djibouti.
The drought is tied to strong La Nina conditions that prevailed in late 2010 and early 2011. La Nina shifts ocean temperatures and air pressure over the Pacific Ocean, causing effects that ripple through weather patterns around the world. In East Africa, La Nina typically brings drought.
The current dry conditions are illustrated in a new map, created using nine years of data on surface relative humidity from the Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua spacecraft.
AIRS is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif.
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Tropical Storm Muifa appears huge on NASA infrared imagery
Greenbelt MD (SPX) Aug 01, 2011
The width of an image from the AIRS instrument that flies on NASA's Aqua satellite is about 1700 km (1056 miles), and the clouds and thunderstorms associate with Tropical Storm Muifa take up that entire distance in the latest imagery. Tropical Storm Muifa is spinning through the western North Pacific Ocean Friday and has grown in size. When NASA's Aqua satellite passed over the storm on Ju ... read more
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