Atmosphere:composition and vertical stratification Minor constituents of clean air Atmospheric stratification Pressure(mb) Gas % ppm 0 200 400,600,80010001200 100000 Thermosphere H20 0N7 90000 C02 0.032 80000 CH4 1.5 70000 Mesosphere cO 0.1 E6000- 03 0.02 apmnIV Stratopause 50000 40000 NH3 0.01 Stratosphere 30000 NO 0.001 20000 S02 0.0002 Tropopause 10000 H>S 0.0002 Troposphere 0 100 -80 -60 -40 -20 20 Why H2O,CO2,and O are important? Where are the so called "Ozone Layer"and "Tropospheric Ozone"?Atmosphere: composition and vertical stratification Gas % ppm H2O 0~7 CO2 0.032 CH4 1.5 CO 0.1 O3 0.02 NH3 0.01 NO2 0.001 SO2 0.0002 H2S 0.0002 Minor constituents of clean air Atmospheric stratification Why H2O, CO2 , and O3 are important? Where are the so called “Ozone Layer” and “Tropospheric Ozone”?