For the first time since 1918, snow fell in Buenos Aires, Argentina, late on July 9, 2007. The snow was still there the next morning when the Moderate Resolution Imaging Spectroradiometer (MODIS) flew over on NASA’s Terra satellite at 10:55 a.m. local time.
Acquired July 22, 2011, and July 8, 2011, these false-color images compare conditions around Lonquimay, Chile, which was buried in several feet heavy snow.
Scientist Tom Painter examines the differences between pure and dirty snow. A rise in dust can be a critical influence on snow-fed water supplies in the American West.