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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Overview of the trace gas measurements on board the Citation aircraft during the intensive field phase of INDOEX
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Overview of the trace gas measurements on board the Citation aircraft during the intensive field phase of INDOEX

机译：在INDOEX的密集野外试验阶段，在引证飞机上测量痕量气体的概述

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During the intensive field phase of the Indian Ocean Experiment (INDOEX), measurements of the atmospheric chemical and aerosol composition over the Indian Ocean were performed from a Cessna Citation aircraft. Measurements were performed during February and March 1999 over the northern Indian Ocean from 70 degreesE to 80 degreesE, and from 8 degreesN tb 8 degreesS in the 0-13 km altitude range. An overview of the trace gas-measurements is presented. In the lowest 3 km the highest levels of pollution were found during February 1999, mostly originating from northeastern India and southeastern Asia. Lower levels of pollution were detected in March 1999, when the sampled air mostly originated from the Arabian Sea region. The mixing ratios of a number of trace compounds, indicative of biomass burning, were well correlated. The pollutant emission factors inferred from the measurements are consistent with literature values for fire plumes, confirming that the residential use of biofuels in Asia is a major source of gaseous pollutants to the atmosphere over the Indian Ocean, in accord with emission databases. The removal of reactive trace gases was studied over an extended area without interfering local emissions, and is shown to be governed by photochemical processes rather than by mixing and deposition. At intermediate altitudes of 3-8 km the mixing ratios of all trace gases other than ozone were generally lower, and the measurements suggest that the Photochemical processing of these air masses is much more extensive than in the 0-3 kin range. In the 8-13 km altitude range some evidence is obtained for the importance of convective cloud systems in the transport of gaseous pollutants to the upper troposphere. [References: 32]
机译：在印度洋实验（INDOEX）的密集野外阶段，使用塞斯纳（Cessna Citation）飞机对印度洋上的大气化学和气溶胶成分进行了测量。在1999年2月和1999年3月期间，在印度洋北部从70度到80度，以及从0度到13公里的海拔范围内从8度tb到8度进行了测量。介绍了痕量气体测量的概述。在最低的3公里内，在1999年2月发现了最高的污染水平，主要来自印度东北部和东南亚。在1999年3月检测到较低的污染水平，当时采样的空气主要来自阿拉伯海地区。多种痕量化合物的混合比具有很好的相关性，表明生物质燃烧。通过测量得出的污染物排放因子与火羽的文献值一致，证实了根据排放数据库，亚洲生物燃料在印度洋的居民使用是向大气排放的主要气体污染物。研究了在不影响局部排放的情况下在较大范围内去除反应性痕量气体的情况，结果表明该方法受光化学过程而非混合和沉积的支配。在3-8公里的中间高度，除臭氧外，所有其他痕量气体的混合比通常都较低，这些测量表明，这些空气团的光化学处理比0-3亲族范围的光化学处理要广泛得多。在8-13公里的海拔范围内，已经获得了一些证据，表明对流云系统在将气态污染物输送到对流层上部的重要性。 [参考：32]

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