The Effect of the Vertical Source Distribution on Scalar Statistics within and above a Forest Canopy

被引：20

作者：

Edburg, S. L. ^{[1
]}

Stock, D. ^{[2
]}

Lamb, B. K. ^{[1
]}

Patton, E. G. ^{[3
]}

机构：

[1] Washington State Univ, Lab Atmospher Res, Dept Civil & Environm Engn, Pullman, WA 99164 USA

[2] Washington State Univ, Dept Mech Engn, Pullman, WA 99164 USA

[3] Natl Ctr Atmospher Res, Mesoscale & Microscale Meteorol Div, Boulder, CO 80307 USA

来源：

BOUNDARY-LAYER METEOROLOGY | 2012年 / 142卷 / 03期

关键词：

Biogenic volatile organic compounds; Dispersion; Forest canopy; Large-eddy simulation; Scalar transport; Turbulence; LARGE-EDDY-SIMULATION; TURBULENT-FLOW; EXCHANGE; CHEMISTRY; ISOPRENE; FLUXES; MODEL; EMISSIONS; DIOXIDE;

D O I：

10.1007/s10546-011-9686-1

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Little is known about in-canopy processes that may alter forest-atmosphere exchanges of trace gases and aerosols. To improve our understanding of in-canopy mixing, we use large-eddy simulation to study the effect of scalar source/sink distributions on scalar concentration moments, fluxes, and correlation coefficients within and above an ideal forest canopy. Scalars are emitted from: (1) the ground, (2) the canopy, and (3) both the ground and the canopy; a scalar is also deposited onto the canopy. All scalar concentration moments, fluxes, and correlation coefficients are affected by the source location/distribution, as is the scalar segregation intensity. We conclude that vertical source/sink distribution has a profound impact on scalar concentration profiles, fluxes, correlation coefficient, and scalar segregation.

引用

页码：365 / 382

页数：18

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