Observing Climate Change

NASA’s satellites reveal the alarming rate of climate change.

As a longtime subscriber to NASA News Services and a frequent user of Google Maps I get to see some thrilling and, often sobering, views of the Earth from space. For some time now, I’ve been watching the polar ice cap recede at an alarming rate while hoping that millions of others, too, are looking at the same images. It’s hard to deny that climate change is real when the evidence is right in front of you.

Now we have another image to ponder: Snow Covered Desert. This phenomena, notes NASA, is “rare but that’s exactly what the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite observed as it passed over the Taklimakan Desert in western China on Jan. 2, 2013. Snow has covered much of the desert since a storm blew through the area on Dec. 26. The day after the storm, Chinese Central Television (CNTV) reported that the Xinjian Uygyr autonomous region was one of the areas hardest hit. The Taklimakan is one of the world’s largest—and hottest—sandy deserts. Water flowing into the Tarim Basin has no outlet, so over the years, sediments have steadily accumulated. In parts of the desert, sand can pile up to 300 meters (roughly 1,000 feet) high. The mountains that enclose the sea of sand—the Tien Shan in the north and the Kunlun Shan in the south—were also covered with what appeared to be a significantly thicker layer of snow in January 2013.”

Categories: Ideas

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