The Stratosphere: Point Counterpoint

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The StratospherePoint / Counterpoint
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Solar Forcing
Coupler
Atmosphere
Ocean
Sea Ice
Land
C/N Cycle
Dyn. Veg.
Ecosystem BGC
Gas chem.
Prognostic Aerosols
Upper Atm.
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Solar Cycle Studies Model Input
Spectral composite courtesy of Judith Lean
(NRL) and Tom Woods (CU/LASP)
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Response of the upper atmosphere to solar
variability
Marsh and Matthes
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Historical Forcings, including CFCs and volcanic
aerosols
Coupler
Atmosphere
Ocean
Sea Ice
Land
C/N Cycle
Dyn. Veg.
Ecosystem BGC
Gas chem.
Prognostic Aerosols
Upper Atm.
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Calculated and Observed Ozone Trends
SAGE-I 1979-1981 and SAGE-II 1984-2000
Rolando Garcia

• Red inset on left covers approximately same
  region as observations on right
• Agreement is quite good, including region of
  apparent self-healing in lower tropical
  stratosphere

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Calculated and Observed Temperature Trends
SSU MSU 1979-1998
Rolando Garcia

• Red inset on left covers approximately same
  region as observations on right
• Note comparable modeled vs. observed trend in
  upper stratosphere, although model trend is
  somewhat smaller

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Calculated Temperature Trends, 1950-2003
Global-means, deseasonalized
Caution 11-year solar signal not removed in
trend calculations this is large above 50 km,
as shown on right