Eddy correlation measurements of aerosol deposition to grass

被引：35

作者：

Vong, RJ ^{[1
]}

Vickers, D

Covert, DS

机构：

[1] Oregon State Univ, Corvallis, OR 97331 USA

[2] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA

来源：

TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY | 2004年 / 56卷 / 02期

关键词：

D O I：

10.1111/j.1600-0889.2004.00098.x

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

An experiment was conducted to measure aerosol turbulent fluxes to a grass field. A new high-flow-rate aerosol sensor was deployed from a tower to make eddy correlation (EC) measurements of aerosol turbulent flux and deposition velocity. The EC data were screened and analysed for uncertainties associated with advection, boundary layer growth, instrument separation and counting particles. An apparent bias in the aerosol flux due to particle hygroscopic growth was evaluated from chemical and microphysical measurements and removed from the results based on derived corrections. The resulting aerosol deposition velocity for 0.52 mum diameter particles depended on atmospheric stability with values of 0.3 cm s(-1) during near-neutral stability, 0.44 cm s(-1) during unstable periods and 0.16 cm s(-1) during stable periods with an estimated uncertainty of 0.07 cm s(-1) due to chemical composition and particle counting.

引用

页码：105 / 117

页数：13

共 39 条

[1] Variation of net radiation over heterogeneous surfaces: measurements and simulation in a juniper-sagebrush ecosystem [J].