Parameterization of subgrid plume dilution for use in large-scale atmospheric simulations

被引：13

作者：

Naiman, A. D. ^{[1
]}

Lele, S. K. ^{[1
]}

Wilkerson, J. T. ^{[1
]}

Jacobson, M. Z. ^{[1
]}

机构：

[1] Stanford Univ, Stanford, CA 94305 USA

来源：

ATMOSPHERIC CHEMISTRY AND PHYSICS | 2010年 / 10卷 / 05期

基金：

美国国家科学基金会;

关键词：

AIRCRAFT EXHAUST PLUMES; SIZE DISTRIBUTIONS; SUBSONIC AIRCRAFT; GATOR-GCMM; CONTRAILS; MODEL; CONVERSION; DIFFUSION; EMISSIONS; CHEMISTRY;

D O I：

10.5194/acp-10-2551-2010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A new model of plume dynamics has been developed for use as a subgrid model of plume dilution in a large-scale atmospheric simulation. The model uses mean wind, shear, and diffusion parameters derived from the local large-scale variables to advance the plume cross-sectional shape and area in time. Comparisons with a large eddy simulation of aircraft emission plume dynamics, with an analytical solution to the dynamics of a sheared Gaussian plume, and with measurements of aircraft exhaust plume dilution at cruise altitude show good agreement with these previous studies. We argue that the model also provides a reasonable approximation of line-shaped contrail dilution and give an example of how it can be applied in a global climate model.

引用

页码：2551 / 2560

页数：10

共 35 条

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