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Image of the Week Archive — February 2004
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California Fires
February 29, 2004 —
This beautiful image of fires raging in southern California and the massive smoke plume emitted by the fires was acquired at 18:40 UTC on October 26, 2003 by the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor onboard the Earth Observing Syst . . . [continued]
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The Origin of Monsoons-Challenging a 3-Century Old Theory
February 22, 2004 —
The monsoon is a continental-size convective system with a large area of monthly mean precipitation. In the northern hemisphere the monsoon has a characteristic monthly mean southwesterly flow at the low levels and a reverse flow at the high levels. In . . . [continued]
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THOR lidar system: Halo method determines cloud layer thicknesses using multiple fields-of-view.
February 15, 2004 —
These images illustrate cloud geometrical thickness measurements by the THOR (THickness from Offbeam Returns) system. THOR is uniquely well-suited for such measurements because it can observe the horizontal spreading of laser pulses inside a cloud. In a t . . . [continued]
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Rain and the Time of Day
February 8, 2004 —
The probability of rain often depends strongly on the hour of the day, especially over land. This image shows the favored hour for each of the 300-km boxes spanning the American continent and part of Africa, as well as nearby portions of the Atlantic and . . . [continued]
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