01 Sep '12, 10pm

Flooding and Drought in Etosha Pan

Outside of the Sahara, the driest country in Africa is Namibia. Although flooding is familiar in the country’s far eastern Caprivi Strip, most of Namibia is vulnerable to prolonged drought. On average, the country receives just 258 millimeters (10 inches) of rain per year, though annual rainfall amounts can vary considerably. One place that gives an indication of Namibia’s precipitation is Etosha Pan. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured these images on July 30, 2009; July 31, 2010; July 31, 2011; and July 31, 2012. All of the images use a combination of infrared and visible light to increase the contrast between water and land. Water varies in color from electric blue to navy, with darker shades indicating deeper water. Vegetation, even sparse vegetation, appears green. Burnt orange indicates burn scars from fires. To...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=79078&s...

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Flooding and Drought in Etosha Pan [image] #NASA

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