1 uiuc atmos 397g biogeochemical cycles and global change lecture 6: earth system / modeling don...
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ATMOS 397GATMOS 397GBiogeochemical Cycles and Global ChangeBiogeochemical Cycles and Global Change
Lecture 6: Earth System / ModelingLecture 6: Earth System / Modeling
Don WuebblesDon Wuebbles
Department of Atmospheric SciencesDepartment of Atmospheric Sciences
University of Illinois, Urbana, ILUniversity of Illinois, Urbana, IL
February 4, 2003February 4, 2003
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Change in Ozone (%) Change in Ozone (%) during June for a fleet of HSCT during June for a fleet of HSCT type aircraft with a cruise altitude of 19-21 km, a total type aircraft with a cruise altitude of 19-21 km, a total
fuel 146 Mlbs/day and EI(NOx)=20 g/kg of fuel.fuel 146 Mlbs/day and EI(NOx)=20 g/kg of fuel.
UIUC 2-D Model (Dutta et al., 2003)
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Modeling Air Quality
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The LithosphereThe Lithosphere
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Plate TectonicsPlate Tectonics
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Modeling the Earth SystemModeling the Earth System
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Types of Models Types of Models
Box Model(s) Reservoirs / pools Fluxes Chemistry or other processes within a reservoir
1-D Model 2-D Model 3-D Model
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Flows in a Flows in a Generalized Generalized
Biogeochemical Biogeochemical CycleCycle
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Generalized Global
Carbon Cycle
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Box Model of the
Global Carbon
Cycle
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Modeling the Carbon CycleModeling the Carbon Cycle
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Modeled Flux of CO2 at Air-Sea Interface
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Modeling the Nitrogen CycleModeling the Nitrogen Cycle
What’s missing?
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Box Model of the Box Model of the Nitrogen CycleNitrogen Cycle
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Modeling the Phosphorous CycleModeling the Phosphorous Cycle
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Grid Structure: 3-D Ocean ModelGrid Structure: 3-D Ocean Model
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Definitions within the model grid. Ai,j,k are signed box surfaces. Due to the
irregular grid, boxes can have more than 6 surfaces. This is important for the setup of the advection/diffusion matrix. Horizontal and vertical velocities are defined at the corresponding surface, whereas concentrations are defined in the center of a box