warm turbulent cloud toy model gregory falkovich m. stepanov, a. fouxon, m. vucelja, a. pumir, a....
Post on 19-Dec-2015
216 views
TRANSCRIPT
Warm turbulent cloud
Toy model
Gregory FalkovichM. Stepanov, A. Fouxon, M. Vucelja, A. Pumir ,
A. Seminara, A. Celani, A. Mazzino ,
S. Derevyanko, S. Turitsyn
March 24, 2009
Strepsiades: Do you think Zeus always rains new water down or does the sun draw the old up to be re-used?Amynias: I don’t know and I don’t care.Strepsiades: How do you expect to get your money if you know nothing of meteorology?
Aristophanes, CLOUDS
preferential concentration
sling effect
100 sec
or
Timescales
Distributions of droplets over sizes
With the account of supersaturation fluctuations
• Toy model of cloud evolution that incorporates both macroscopic and microscopic effects of turbulence
• Hygroscopic cloud seeding may be a practical possibility
• Much further work is needed on • collisions• spectrum broadening during condensation• latent heat release and convection• Account of vertical structure and ice• …..