Circulation patterns in terrestrial atmosphere1

Circulation patterns in terrestrial atmosphere1 -...

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Circulation patterns in terrestrial atmospheres Condensation Flows As far as we are aware currently this is unique to Mars - the flow due to the condensation and subimation of the Carbon Dioxide in the polar caps effectively transfers the CO 2 from pole to pole, and pole-to-atmosphere and back again. This flow can cause a 20% variation in the atmospheric pressure on Mars. This was seen by the Viking landers. Thermal Tides The subsolar point of heating moves across the planet as it rotates, following the Sun. This leads to diurnal pressure and temperature variations and harmonics - these are called Tides, diurnal, semi-diurnal, terdiurnal etc. This effect is strong for Mars (as heating and cooling of the surface is so rapid, and it is enhanced by dust absorption). Thermal tides are weak in the lower atmosphere of Ven the lower atmosphere of Venus but may have influenced the current rotation rate of the planet. It spins slowly in a retrograde direction (117 Earth days), and it has been suggested that there was an interaction between body tides (slowing the planet) and atmospheric
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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.

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Circulation patterns in terrestrial atmosphere1 -...

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