meteorology and tracer lifetime in the general circulation model
Abstract. Atmospheric transport of traces gases and aerosols plays an important role in the distribution of air pollutants and radiatively active compounds. For model simulations of chemistry-climate interactions it is important to know how the transport of tracers depends on the geographical reso-l...
| Main Authors: | , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.626.3351 http://www.atmos-chem-phys.org/10/3385/2010/acp-10-3385-2010.pdf |
| Summary: | Abstract. Atmospheric transport of traces gases and aerosols plays an important role in the distribution of air pollutants and radiatively active compounds. For model simulations of chemistry-climate interactions it is important to know how the transport of tracers depends on the geographical reso-lution of the general circulation model. However, this as-pect has been scarcely investigated until now. Here, we analyse tracer transport in the ECHAM5 general circulation model using 6 independent idealized tracers with constant lifetimes, which are released in two different altitudes at the surface and in the stratosphere, respectively. Model resolu-tions from T21L19 to T106L31 were tested by performing multi-annual simulations with prescribed sea surface temper-atures and sea ice fields of the 1990s. The impacts of the tracer lifetime were investigated by varying the globally uni- |
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