Global tracer transport model

Taylor JA, Brasseur GP, Zimmermann PR, Cicerone RJ. 1991. A study of the sources and sinks of methane and methyl chloroform using a global three-dimensional Lagrangian tropospheric tracer transport model. Journal of Geophysical Research 96D 3013-3044. 

The first strand of evidence for the global ocean uptake comes from models of the ocean carbon cycle. These generally combine descriptions of the relevant carbonate chemistry with some representation of tracer transport in the ocean. As well they need a model (usually highly simplified) of the biological processes in the ocean and finally some parameterization of the surface fluxes of... 

Feichter, J. Crutzen, P.J., 1990 Parameterization of Vertical Tracer Transport due to Deep Cumulus Convection in a Global Transport Model and Its Evaluation with 222 Radon Measurements , in Tellus, 42B 100-117. 

In addition to the extensive chemical reactions, forecast runs include CO tracers which are tagged with their origin. Such tracers are emitted normally over selected regions (north and south China, Japan, south Asia, northern America, Europe, and Siberia) and evolved subject to model transport schemes and normal chemical loss processes for CO. Anthropogenic surface emissions of CO are taken from the Streets et al. (2003) inventory over Asia (except China), and from the Emission Database for Global Atmospheric Research (EDGAR) (Olivier et al. 1996) over other regions. Surface CO emissions over China are taken from D. Streets,... 

The escape of Rn from soils is the source of 99% of the Rn in the atmosphere. Typical radon escape rates are on the order of 1 atomcm s from the land surface, which result in a radon inventory of the global atmosphere of 1.5Xl0 Bq. Atmospheric radon itself is a chemically inert and unscavenged, i.e., not removed from the atmosphere by physical or chemical means. Because its half-life is much less than the mixing time of the atmosphere, it is a tracer of atmospheric transport and can be used in a synoptic approach to identify air masses derived from continental boundary layers or in a climatological manner to verify the predictions of numerical models of transport. 

Weiss W, Sartorius H, Stockburger H (1992) Global distribution of atmospheric %r A database for the verification of transport and mixing models. In Isotopes of noble gases as tracers in environmental studies. IAEA, Vienna, p 29-62... 

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