OZONE AND STRATOSPHERIC TEMPERATURE Atmospheric pressure(millibars-mb 02004006008001000 120 80 Temperature 60 Pressure 100 Thermosphere 50 Mesopause 40 Mesosphere 40 9g>0g 30 Stratopause 20 Stratosphere 20 10 Tropopause 0 Troposphere 0369 Temperature°c)120 80-4004080 M ixing Ratio (ppmv) Source: Emvironmental Science, Cunningham, P. W and B W Saigo, 2001 Source: Stratospheric Ozone, NASA/GSFC Local heating of the stratosphere due to UV absorption by O3 Tropospheric O3 is also an important greenhouse gasOZONE AND STRATOSPHERIC TEMPERATURE • Local heating of the stratosphere due to UV absorption by O3 • Tropospheric O3 is also an important greenhouse gas Source: Stratospheric Ozone, NASA/GSFC Source: Environmental Science, Cunningham, P. W. and B. W. Saigo, 2001