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Unformatted text preview:  Gradual erosion of the atmosphere by solar wind;  and On-going removal of atmosphere due to electromagnetic field and solar wind interaction.  Structure Mars' atmosphere is composed of the following layers: Lower atmosphere: This is a warm region affected by heat from airborne dust and from the ground. Middle atmosphere: Mars has a jetstream , which flows in this region. Upper atmosphere, or thermosphere: This region has very high temperatures, caused by heating from the Sun. Atmospheric gases start to separate from each other at these altitudes, rather than forming the even mix found in the lower atmospheric layers. Exosphere: Typically stated to start at 200 kilometres (120 mi) and higher, this region is where the last wisps of atmosphere merge into the vacuum of space. There is no distinct boundary where the atmosphere ends; it just tapers away....
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.
- Fall '10