Measurements of reactive nitrogen above the canopy of a South East Asian tropical rainforest
Measurements of reactive nitrogen above the canopy of a South East Asian tropical rainforest
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东南亚热带雨林树冠上方活性氮的测量
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
D. Stewart
中科院分区：
文献类型：
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作者：
S. Moller;James D. Lee;R. Pike;C. Reeves;D. Stewart
在偏远的热带地区，由于OH和挥发性有机化合物的高浓度和低背景NOx浓度，NOx物种影响当地化学的潜力是显着的。有人认为，土壤排放可能是氮氧化物的一个主要生物来源，但热带地区的排放量很难量化。要了解土壤排放的潜在影响，我们必须了解氮氧化物的源和汇的边界层以上的森林冠层。在婆罗洲沙巴的Bukit Atur全球大气监测站，作为东南亚热带雨林（OP3）项目上方氧化剂和颗粒光化学过程的一部分，在雨林树冠上方的开口处测量NO、NO2和总活性氮（NOy）。使用金催化转化器测量总活性氮，然后对所得NO进行荧光检测，并与不同NOy物质（NO，NO2，PAN，硝酸烷基酯，HNO3）的单独测量值进行比较，试图了解氮化学发生的情况，并评估对氮预算的任何突出贡献。
The potential for NOx species to influence local chemistry is significant in remote tropical areas due to the high concentrations of both OH and volatile organic compounds and the low background NOx concentrations. It has been suggested that emissions from soil could be a major biogenic source of nitrogen oxides but fluxes from tropical areas are poorly quantified. To understand the potential influence of soil emissions we must understand the sources and sinks of NOx in the boundary layer above a forest canopy. Measurements of NO, NO2 and total reactive nitrogen (NOy) were made in an opening above a rainforest canopy at the Bukit Atur Global Atmosphere Watch station in Sabah, Borneo as part of the Oxidant and particle photochemical processes above a South-East Asian tropical rainforest (OP3) project. Measurements of total reactive nitrogen using a gold catalytic converter followed by chemiluminesence detection of the resulting NO are compared to individual measurements of different NOy species (NO, NO2, PAN, Alkyl nitrates, HNO3) in an attempt to understand the nitrogen chemistry occurring and to assess any outstanding contributions to the nitrogen budget.