MEASUREMENT OF DRY DEPOSITION OF AMMONIA ON A FOREST

被引：50

作者：

WYERS, GP

VERMEULEN, AT

SLANINA, J

机构：

[1] Netherlands Energy Research Foundation, 1755 ZG Petten

来源：

ENVIRONMENTAL POLLUTION | 1992年 / 75卷 / 01期

关键词：

D O I：

10.1016/0269-7491(92)90052-C

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ammonia concentration gradients above a Douglas fir canopy were measured from 16 August to 31 December 1989 by two automated high-precision thermo-denuders at the location Speulderbos in The Netherlands. Concentration gradients were used to calculate the dry deposition flux of ammonia via flux-gradient theory. Meteorological data were obtained from a nearby tower. Ammonia concentrations were highly variable with highest values during the night. Concentration gradients were very small during daytime and quite large at night. Median values of the calculated deposition flux and deposition velocity were 0.1-mu-g m-2 s-1 and 3.2 cm s-1 respectively (N = 1624).

引用

页码：25 / 28

页数：4

共 9 条

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