The Atmosphere of Venus

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Climate Evolution • Radiative- Convective Model • Coupled Cloud Microphysics • Exospheric Escape of H,D • Volcanic Outgassing • Reactions with Surface
EVOLUTIONARY CLIMATE MODEL CONCLUSIONS : Bullock and Grinspoon (2001) , The recent history of climate on Venus, Icarus. 1) Changes in outgassing rate associated with the onset and decline of an epoch of rapid resurfacing can lead to changes in surface temperature on the order of 100 K. 2) Sources of outgassed SO 2 in the recent past (10-50 m.y.) must be presently supporting the clouds. Without such a source the clouds would disappear as SO 2 equilibrates with surface minerals. The clouds may be a transient phenomenon. Venus may have been cloud-free for much of its history!
Page 1 and 2: The Atmosphere of Venus! David Grin
Page 4 and 5: New York Times 2/26/1963
Page 6 and 7: The heavens … …now are seen to
Page 8 and 9: A luxuriant garden… ! ! !… of s
Page 10: Radiative Processes
Page 13 and 14: Cloud Particles: Chemical Propertie
Page 15 and 16: Fast Atmospheric S Cycle CO 2 CO +
Page 17 and 18: Geologic Sulfur Cycle 2H 2 S + 3O 2
Page 19 and 20: Large Impacts, Steam Atmospheres, H
Page 21: The Faint Young Sun and Early Venus
Page 24 and 25: Venus vs. Earth. Extreme desiccatio
Page 26: Role of Water in Plate Tectonics
Page 30 and 31: CO 2 Atmosphere-Mineral Equilibrium
Page 32 and 33: Radiative Transfer Model Non-grey,
Page 36 and 37: SO 2 variations & cloud brightening
Page 38 and 39: Globally synchronous formation of w
Page 40 and 41: Figure 8. Mixing ratios assumed in
Page 42 and 43: Did Venus experience one great tran
Page 44 and 45: History of Venus: A Unified Scenari
Page 46 and 47: (D/H) VENUS = 120 ± 40 x (D/H) EAR
Page 48 and 49: Presently, the problem is underdete
Page 50 and 51: ASPERA! Escape of H+ occurs mostly
Page 52: Determination of wind fields from V
Page 55 and 56: Polar vortex dynamics Virtis data @
Page 58 and 59: UV UV 50 km NIR

The Atmosphere of Venus

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