Sensitivity of tracer transport to model resolution, prescribed meteorology and tracer lifetime in the general circulation model ECHAM5
نویسندگان
چکیده
منابع مشابه
Analysis of Passive Tracer Transport as Modeled by an Atmospheric General Circulation Model
Tracers without feedback on the atmosphere are used to probe tropospheric transport. Such passive tracers are considered for two important anthropogenic sources, Europe and eastern North America. The linearity of passive tracer continuity allows transport to be formulated in terms of a Green function, G. A coarse-grained Green function is defined that is suitable for numerical investigation wit...
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Radiative fluxes in the ECHAM5 general circulation model (GCM) are evaluated using both surface and satellite based observations. The fluxes at the top of the atmosphere (TOA) are generally in good agreement with the satellite data. Larger deviations in simulated cloud forcing are found especially at lower latitudes where the shortwave component within the intertropical convergence zone is over...
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[1] We explore the dependency of general circulation model tracer transports on model physics and horizontal and vertical resolution. We use NASA Goddard Institute for Space Studies (GISS) Model E at 4 5 with 20 and 23 layers and the GISS Global Climate Middle Atmosphere Model 3 at 4 5 with 23 and 53 layers and at 2 2.5 with 53 and 102 layers. The online tracers employed are CO2, CH4, N2O, CFC-...
متن کاملAtmospheric Tracer Transport Model Intercomparison Project (TransCom)
A multi-phase program of model intercomparison is proposed to reduce uncertainties in the global carbon budget resulting from differences among atmospheric tracer transport simulations. The TransCom program is already well underway, having begun in 1993 and completed two major experiments. The results to date are summarized in a Technical Report and indicate that significant differences among t...
متن کاملA Study of Tracer Transports by Planetary Scale Waves in the Mit Stratospheric General Circulation Model
The quasi-geostrophic global stratospheric model at MIT developed by is used to study the zonal and time-averaged transport of potential temperature and ozone by the planetary zonal wavenumbers 1-6. Several types of covariances between the winds, geopotential, and the tracers are calculated in order to evaluate the directions and strength of the fluxes and the winds causing the fluxes. The eddy...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2010
ISSN: 1680-7324
DOI: 10.5194/acp-10-3385-2010