All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 39 10 3
PDF Downloads 9 3 2

Transport Characteristics of a Finite-Difference Dynamics Model Combined with a Spectral Transport Model of the Middle Atmosphere

T. DuncanScience and Technology Corporation, Hampton, Virginia

Search for other papers by T. Duncan in
Current site
Google Scholar
PubMed
Close
,
A. FairlieScience and Technology Corporation, Hampton, Virginia

Search for other papers by A. Fairlie in
Current site
Google Scholar
PubMed
Close
,
Richard E. TurnerNASA Langley Research Center, Hampton, Virginia

Search for other papers by Richard E. Turner in
Current site
Google Scholar
PubMed
Close
, and
David E. SiskindNASA Langley Research Center, Hampton, Virginia

Search for other papers by David E. Siskind in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract

A three-dimensional off-line spectral transport model has been combined with a global, mechanistic, finite-difference dynamics model of the middle atmosphere in order to study transport and photochemistry in the middle atmosphere for specific, observed episodes. In this paper, the basic transport characteristics of the combined models are examined, first using steady, idealized flow fields and second using time-dependent flow fields closely related to observed atmospheric behavior. Transport conducted with the combined models is found to compare favorably with transport conducted on-line in the dynamics model, given appropriate time averaging of the flow fields and suitable choice of artificial diffusion.

Abstract

A three-dimensional off-line spectral transport model has been combined with a global, mechanistic, finite-difference dynamics model of the middle atmosphere in order to study transport and photochemistry in the middle atmosphere for specific, observed episodes. In this paper, the basic transport characteristics of the combined models are examined, first using steady, idealized flow fields and second using time-dependent flow fields closely related to observed atmospheric behavior. Transport conducted with the combined models is found to compare favorably with transport conducted on-line in the dynamics model, given appropriate time averaging of the flow fields and suitable choice of artificial diffusion.

Save