Enhancement of acidic gases in biomass burning impacted air masses over Canada
Enhancement of acidic gases in biomass burning impacted air masses over Canada
复制标题
生物质燃烧中酸性气体的增强影响了加拿大上空的气团
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
J. Barrick
中科院分区：
文献类型：
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作者：
B. Lefer;R. Talbot;R. H. Harriss;J. Bradshaw;S. Sandholm;J. Olson;G. Sachse;J. Collins;M. A. Shipham;D. Blake;K. Klemm;O. Klemm;K. Gorzelska;J. Barrick
1990 年夏季，作为 ABLE 3B 的一部分，在加拿大中部和东部采集了生物质燃烧影响的气团样本，其中含有气态 HNO3、HCOOH、CH3COOH 和似乎是 (COOH)2 的混合比例增强的物质。这些基于飞机的样本是从不同来源地区的各种新鲜燃烧羽流和更老化的雾霾层中收集的。对于靠近和远离火场采样的受燃烧影响的空气团，增强因子 ΔX/ΔCO（其中 X 代表酸性气体）的值相对均匀。然而，将实验室火灾中测得的羧酸排放率与现场羽流增强因子进行比较表明，羽流内产生了大量的 HCOOH。生物质燃烧似乎是加拿大亚北极上空对流层 HNO3、HCOOH 和 CH3COOH 的重要来源。
Biomass-burning impacted air masses sampled over central and eastern Canada during the summer of 1990 as part of ABLE 3B contained enhanced mixing ratios of gaseous HNO3, HCOOH, CH3COOH, and what appears to be (COOH)2. These aircraft-based samples were collected from a variety of fresh burning plumes and more aged haze layers from different source regions. Values of the enhancement factor, ΔX/ΔCO, where X represents an acidic gas, for combustion-impacted air masses sampled both near and farther away from the fires, were relatively uniform. However, comparison of carboxylic acid emission ratios measured in laboratory fires to field plume enhancement factors indicates significant in-plume production of HCOOH. Biomass-burning appears to be an important source of HNO3, HCOOH, and CH3COOH to the troposphere over subarctic Canada.