A two-step scheme for high-resolution regional atmospheric trace gas inversions based on independent models
Mixing ratio measurements of atmospheric tracers like CO<sub>2</sub> can be used to estimate regional surface-air tracer fluxes using inverse methods, involving a numerical transport model. Currently available transport models are either global but rather coarse, or more...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2009-07-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | http://www.atmos-chem-phys.net/9/5331/2009/acp-9-5331-2009.pdf |
| Summary: | Mixing ratio measurements of atmospheric tracers like CO<sub>2</sub> can be used to estimate regional surface-air tracer fluxes using inverse methods, involving a numerical transport model. Currently available transport models are either global but rather coarse, or more accurate but only over a limited spatial and temporal domain. To obtain higher-resolution flux estimates within a region of interest, existing studies use zoomed or coupled models. The two-step scheme developed here uses global and regional models sequentially in separate inversion steps, coupled only via the data vector. This provides a nested atmospheric inversion scheme without the necessity of a direct coupled model implementation. For example, the scheme allows an easy nesting of Lagrangian models with their potential of very high resolution into global inversions based on Eulerian models. |
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| ISSN: | 1680-7316 1680-7324 |