A COMPARISON OF BOWEN-RATIO AND EDDY-CORRELATION SENSIBLE AND LATENT-HEAT FLUX MEASUREMENTS ABOVE DECIDUOUS FOREST

被引：86

作者：

BARR, AG ^{[1
]}

KING, KM ^{[1
]}

GILLESPIE, TJ ^{[1
]}

DENHARTOG, G ^{[1
]}

NEUMANN, HH ^{[1
]}

机构：

[1] UNIV GUELPH, GUELPH N1G 2W1, ON, CANADA

来源：

BOUNDARY-LAYER METEOROLOGY | 1994年 / 71卷 / 1-2期

关键词：

D O I：

10.1007/BF00709218

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Sensible and latent heat flux densities (H and lambda E) were measured above a mature, 18 m deciduous forest during July and August, 1988, using the Bowen ratio - energy balance (BREB) and eddy correlation (EC) methods. EC estimates of H and lambda E underestimated day-time surface available energy by 11%. EC also partitioned available energy differently than BREB. For z(')/L < 0.0, EC favoured H and BREB favoured lambda E. Practical and theoretical limitations of the BREB and EC methods above forests are discussed. The most plausible causes for the failure of EC to close the surface energy balance are a low frequency loss of flux and the failure of a single point measurement to account for the spatial dispersive flux. The most plausible causes of the EC-BREB energy partitioning anomaly are the invalidity of the BREB similarity assumption and the violation of flux-gradient diffusion assumptions in the near-field diffusion region.

引用

页码：21 / 41

页数：21

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