Correlations of long-lived chemical species in a middle atmosphere general circulation model


Autoria(s): Sankey, David; Shepherd, Theodore G.
Data(s)

2003

Resumo

Correlations between various chemical species simulated by the Canadian Middle Atmosphere Model, a general circulation model with fully interactive chemistry, are considered in order to investigate the general conditions under which compact correlations can be expected to form. At the same time, the analysis serves to validate the model. The results are compared to previous work on this subject, both from theoretical studies and from atmospheric measurements made from space and from aircraft. The results highlight the importance of having a data set with good spatial coverage when working with correlations and provide a background against which the compactness of correlations obtained from atmospheric measurements can be confirmed. It is shown that for long-lived species, distinct correlations are found in the model in the tropics, the extratropics, and the Antarctic winter vortex. Under these conditions, sparse sampling such as arises from occultation instruments is nevertheless suitable to define a chemical correlation within each region even from a single day of measurements, provided a sufficient range of mixing ratio values is sampled. In practice, this means a large vertical extent, though the requirements are less stringent at more poleward latitudes.

Formato

text

Identificador

http://centaur.reading.ac.uk/32119/1/Sankey%26S2003.pdf

Sankey, D. and Shepherd, T. G. <http://centaur.reading.ac.uk/view/creators/90004685.html> (2003) Correlations of long-lived chemical species in a middle atmosphere general circulation model. Journal of Geophysical Research, 108 (D16). 4494. ISSN 0148-0227 doi: 10.1029/2002JD002799 <http://dx.doi.org/10.1029/2002JD002799>

Idioma(s)

en

Publicador

American Geophysical Union

Relação

http://centaur.reading.ac.uk/32119/

creatorInternal Shepherd, Theodore G.

http://dx.doi.org/10.1029/2002JD002799

10.1029/2002JD002799

Tipo

Article

PeerReviewed