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
收藏
页码：365 / 382
页数：18
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