MOVIES: Extreme Weather

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Science  27 Jul 2001:
Vol. 293, Issue 5530, pp. 579
DOI: 10.1126/science.293.5530.579c

Tomorrow's forecast: Choking dust clouds will continue to blanket the area, with temperatures soaring to a sizzling 20°C above normal. On Mars, that is, where a gigantic cloak of heat-trapping dust has spread over almost the entire planet since mid-June. Using infrared readings from the Mars Global Surveyor satellite, this site tracks the expansion of the cloud, offering time-lapse movies and regular updates. The largest dust storm in over 20 years is more than a martian curiosity—temperature changes there may help elucidate global warming on Earth, says Thermal Emission Spectrometer project leader Philip Christensen of Arizona State University in Tempe.

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