Development and validation of inexpensive, automated, dynamic flux chambers

被引：12

作者：

Almand-Hunter, B. B. ^{[1
]}

Walker, J. T. ^{[2
]}

Masson, N. P. ^{[1
]}

Hafford, L. ^{[1
]}

Hannigan, M. P. ^{[1
]}

机构：

[1] Univ Colorado, Dept Mech Engn, Boulder, CO 80303 USA

[2] US EPA, Air Pollut Prevent & Control Div, Natl Risk Management Res Lab, Res Triangle Pk, NC 27711 USA

来源：

ATMOSPHERIC MEASUREMENT TECHNIQUES | 2015年 / 8卷 / 01期

关键词：

GASEOUS DRY DEPOSITION; NITRIC-OXIDE EMISSION; NITROGEN-DIOXIDE NO2; GAS-EXCHANGE; REACTIVE NITROGEN; OZONE FLUX; FOREST; SOIL; PARAMETERIZATION; ATMOSPHERE;

D O I：

10.5194/amt-8-267-2015

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

We developed and validated an automated, inexpensive, and continuous multiple-species gas-flux monitoring system that can provide data for a variety of relevant atmospheric pollutants, including O-3, CO2, and NOx. Validation consisted of conducting concurrent gas-phase dry-deposition experiments, using both dynamic flux chambers and an eddy-covariance system, in a grassy clearing in the Duke Forest (Chapel Hill, NC). Experiments were carried out in June and September under a variety of meteorological conditions. Ozone-deposition measurements from the two methods matched very well (4-10% difference in mean flux rate) when the leaf-area index (LAI) inside the chambers was representative of the average LAI in the field. The dynamic flux chambers can be considered an accurate measurement system under these conditions.

引用

页码：267 / 280

页数：14

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