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exosphere |
Also found in: Wikipedia, Hutchinson | 0.02 sec. |
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exosphere: see atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other planets and satellites are known, only the earth's atmosphere has been well studied, the ..... Click the link for more information. . exosphere [′ek·sō‚sfir] (meteorology) An outermost region of the atmosphere, estimated at 300-600 miles (500-1000 kilometers), where the density is so low that the mean free path of particles depends upon their direction with respect to the local vertical, being greatest for upward-traveling particles. Also known as region of escape. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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For a mountain wave, a critical level is whenever [U. It's not at the critical level, but there are plenty of indications storage will once again be tight across the Midwest this fall. This is a crisis whose onset began decades ago and has now reached such a critical level that industry representatives have no alternatives but to act immediately. |
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