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Lecture 6, 9/23/13. Climate Dynamics 11:670:461. Alan Robock Department of Environmental Sciences Rutgers University, New Brunswick, New Jersey USA. robock@envsci.rutgers.edu. http://envsci.rutgers.edu/~ robock. Stronger polar vortex Winter warming
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Lecture 6, 9/23/13 Climate Dynamics11:670:461 Alan Robock Department of Environmental Sciences Rutgers University, New Brunswick, New Jersey USA robock@envsci.rutgers.edu http://envsci.rutgers.edu/~robock
Stronger polar vortex Winter warming Positive mode is the same as the response to volcanic aerosols. The Arctic Oscillation Thompson and Wallace (1998)
r a S0 = 1368 W m-2 Emission = sTe4 a= planetary albedo (0.30) Greenhouse Effect A =4pr2 A =pr2 Sun Ts Earth
Global Energy Balance Incoming Energy = Outgoing Energy pr2 S0 (1-a) = 4pr2sTe4 r = radius of Earth S0 = solar constant (1368 W/m2) a= planetary albedo (0.30) s= Stefan-Boltzmann constant (5.67 x 108 W m-2 K-4) Te = effective temperature of the Earth Ts = observed global average surface temperature Greenhouse Effect Ts = 288 K Te = 255 K 33 K (33C° = 59F°) Greenhouse Effect
S0 = “solar constant” = 1368 W/m2 Greenhouse Effect Greenhouse Effect a= planetary albedo = 0.30 Te = effective temperature Ts = surface temperature sTe4 sTe4 Greenhouse gases Sensible and latent heat sTs4 esTe4 Ts = Te = 255K = -18°C Ts = 288K = 15°C (Observed)
SAGE II, III SME OSIRIS Robock (1983)