Polar Ozone: Stratosphere- Troposphere Coupling and recent Changes 16.01.08 Proseminar Presentation Techniques Axel Behrendt.

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Presentation transcript:

Polar Ozone: Stratosphere- Troposphere Coupling and recent Changes Proseminar Presentation Techniques Axel Behrendt

Contents Part A: Stratosphere-Troposphere Coupling Part B: Recent Polar Ozone Changes 1.Radiation 2.Dynamics 3.Composition of the Stratosphere 4.Impact on Climate 1.Antarctic Ozone Hole Polar Ozone Trends 1/13

1. Radiation Part A: Stratosphere-Troposphere Coupling Increase of Greenhouse Gases 2/ Gas Phase Reactions slow down More PSCs

1. Radiation 11-Year Sun-Cycle 3/13 Part A: Stratosphere-Troposphere Coupling Meridional temperature gradient is modified Brewer Dobson Circu- lation is modified

2. Dynamics Stratosphere-Troposphere-ExchangeBrewer Dobson Circulation 4/13 Part A: Stratosphere-Troposphere Coupling

2. Dynamics Quasi Biennial Oscillation 5/13 Part A: Stratosphere-Troposphere Coupling

2. Dynamics Chemical Composition of the Troposphere: Long lived species: CH 4, N 2 O, CFCs, COS, … Short lived species: SO 2 DMS 6/13 Part A: Stratosphere-Troposphere Coupling

3. Composition of the Stratosphere Stratospheric Aerosols (SO 2, COS from volcanoes) 7/13 Part A: Stratosphere-Troposphere Coupling Stratospheric Water Vapor From: WMO-Report 2007

4. Impact on Climate 500 hPa Geopotential Height [m] Surface Temp. [K] and Winds 8/13 Part A: Stratosphere-Troposphere Coupling From: WMO-Report 2007

Part B: Recent Polar Ozone Changes 9/13

Part B: Recent Polar Ozone Changes 1. The Antarctic Ozone Hole /13 From: WMO-Report 2007

2. Polar Ozone Trends Antarctic: 11/13 Part B: Recent Polar Ozone Changes

2. Polar Ozone Trends 12/13 Part B: Recent Polar Ozone Changes

Thanks for your attention !! 13/13