Global Energy Balance Te/KTm/KTsurf/K Venus227230750 Earth256250280 Mars216220218 [Jupiter 98130134 ]

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Presentation transcript:

Global Energy Balance Te/KTm/KTsurf/K Venus Earth Mars [Jupiter ]

Simple Greenhouse analogy

Infra-red emission spectrum (over sunny mediterranean)

Atmospheric profile DR Leadley

More on atmospheric profiles

Troposphere and Stratosphere

Tropopause views

Calculated Radiation-Convection temperature profiles

Infra-red emission spectrum (over sunny mediterranean)

Digest of the emission spectrum What matters, for each part of the spectrum, is the temperature at the height above which the atmosphere is transparent. Water (vapour) absorbtion bands: saturated as far as the vapour rises. Eq’m vapour pressure strongly controlled by T, so temperature of vapour emission somewhat buffered. !!Water clouds are much more delicate to assess …… CO2 bands: saturated to Stratosphere. Average T of emission only sensitive at edge of these bands, but these are quite broad. !!This does assume the stratosphere temperature is insensitive. Under query. Atmospheric windows: anything which does scatter IR here will have a strong effect per molecule. CH4, CFC’s act in this way.

More complete radiation balance

Shifted radiation balance

Temperature Selection including albedo

Two thousand year temperature record 2005

The Globe is Warming (IPCC TS2001) “Hockey Stick”

Sea Levels are rising … (IPCC TS2001)

Planetary temperature profiles