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Two-Dimensional Chemistry Transport Model. 11/16/2006. Overview. Offline 2-D CTM (Caltech/JPL Kinetics model) ThinAir Model (Two-and-a-Half-dimesional INter-Active Isentropic Research model, J. Kinnersley and K. K. Tung) Discussion.
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Two-Dimensional Chemistry Transport Model 11/16/2006
Overview • Offline 2-D CTM (Caltech/JPL Kinetics model) • ThinAir Model (Two-and-a-Half-dimesional INter-Active Isentropic Research model, J. Kinnersley and K. K. Tung) • Discussion
Continuity Equation for Chemical Species (Morgan et al. 2004) Advection (V and W or Streamfuction) 2. Eddy Diffusion (Kyy) 3. Vertical Diffusion (Kzz) 4. Chemical Sources and Sinks 5. Resolution and Vertical Coordinate 6. Numeical Scheme and Time Spliting
Interactive 2-D CTM Dynamics Model Radiation code Chemistry Transport Model Interactions between the three Modules
ThinAir Model Isentropic Coordinate Two and a Half Dimensional Dynamics Model (zonally averaged dynamics plus three longest planetary waves) Planetary Wave Breaking Parameterization for Kyy Gravity Wave Breaking Parameterization for Kzz
ThinAir Model 5. Radiation (J. Haigh, 1984): UV and Visible (O3 and O2) NIR (H2O, CO2, O2, CH4 and N2O) IR (H2O, CO2 and O3)
ThinAir Model 6. Chemistry: 45 Species Rate Data from DeMore et al. (1992) PSC Parameterization and Heterogeneous Reactions
ThinAir Model 7. QBO-Source Term in the Momentum Equation: Wave Parameterization (Kinnersley, 1996b) Kelvin Waves and Rossby-Gravity Waves or Relaxation to Observed QBO (Singapore, 80-93) Winds (Kinnersley, 1998)
Discussions 1. Climatology (Kinnersley, 1996) 2. Modification and Updating: Adding Solar Cycle QBO data and Lower Boundary Condition for Planetary Waves Extended to 2005 3. The use of ThinAir