Kép:LakeEffect-Superior-Michigan-EO.jpg
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The lake effect is particularly clear in this Sea-viewing Wide field-of-view Sensor (SeaWiFS) true-color image of the North American Great Lakes region, acquired December 5, 2000. Lakes Nipigon, Superior, and Michigan show striking contrasts between clear and cloudy air as the wind blows from the northwest across the lakes.
As it flows across the relatively warm lakes, the cold dry air gathers heat and moisture from the surface. The warm moist air rises into the atmosphere and mixes vigorously with the cold dry air above. The layer of warm moist air deepens as it travels across the lake. Some of the evaporated water from the lake condenses into streamers of fog rising from the surface, while much of the moisture condenses to form a stratocumulus cloud in the upper half of the mixed layer.
The cloud-forming water droplets may freeze into ice crystals and, due to accumulated water deposition over time, grow into snowflakes. This process can generate snowstorms that produce significant amounts of snowfall downwind. It is not uncommon for lake effect snowstorms to produce as much as two feet of snow within a 24-hour period in northwestern parts of New York and Pennsylvania.
NASA image from http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=4488, taken December 5, 2000.
Source: english wikipedia, original upload see file history
{{PD-USGov-NASA}}
Attention: this image is still on the main page on the English Wikipedia. Please do not delete it until it is removed from there. Thankyou, Alphax (talk) 05:05, 19 December 2006 (UTC)
| This page or file may meet the criteria for speedy deletion. The given reason is: This file is under a license that does not allow unrestricted commercial use
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This file is under a license that does not allow unrestricted commercial use. The file will be deleted without notice unless it is relicensed according to the Commons licensing policy. Please transwiki this back to the English Wikipedia, as SeaWiFS is not {{PD-NASA}}. These are covered by a non-commercial use tag, as said on Commons:Deletion requests/SeaWiFS imagery. Currently it is being shown on the Main Page, so please be careful. Titoxd(?!?) 01:47, 19 December 2006 (UTC)
File history english Wikipedia
- (del) (cur) 18:03, 4 March 2005 . . Brian0918 (412965 bytes)
- (del) (rev) 05:19, 14 March 2004 . . Seth Ilys (67942 bytes) (NASA image from http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=4488, taken December 5, 2000.)
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