Cryogenic Air Sampling System for Measurements of the Concentrations of Stratospheric Trace Gases and Their Isotopic Ratios over Antarctica
Cryogenic Air Sampling System for Measurements of the Concentrations of Stratospheric Trace Gases and Their Isotopic Ratios over Antarctica
复制标题
用于测量南极上空平流层痕量气体浓度及其同位素比的低温空气采样系统
DOI：
10.5636/jgg.48.1145
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
N. Yajima
中科院分区：
文献类型：
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作者：
H. Honda;S. Aoki;T. Nakazawa;S. Morimoto;N. Yajima
为了测量1998年1月南极平流层中CO2、CH 4、N2 O和卤代烃等微量气体的浓度以及CO2的δ 13 C、δ 18 O和Δ 14 C同位素比值，一个气球-在日本平流层空气取样器的基础上，研制了一种机载低温空气取样系统1985.本研究所开发的采样器能够在12个高度水平上采集体积为20-30 1STP的空气样品。对采样器给予了特别关注，以便在短时间内完成大量平流层空气的收集，这对于使用直升机在站点附近回收采样器至关重要。此外，采样器被设计为安全地降落在海上或冰原上。利用南极昭和站（69°00' S，39°35' E）的风场资料，模拟了采样器的飞行轨迹。结果表明，如果在夏季进行空气采样，采样器可在距离台站约150公里的范围内着陆。实际上，1995年1月21日和2月6日在昭和站用橡胶气球进行的实验证实了这样预测的轨道是正确的。
In order to measure the concentrations of trace gases such as CO 2 , CH 4 , N 2 O and halocarbons and the isotopic ratios of δ 13 C, δ 18 O and Δ 14 C of CO 2 in the stratosphere over Antarctica in January 1998, a balloon-borne cryogenic air sampling system was developed on the basis of the sampler which has used for the collection of stratospheric air over Japan since 1985. The sampler developed in this study is capable of collecting air samples with volumes of 20-30 1STP at 12 height levels. Special attention was paid to the sampler so that the collection of a large amount of the stratospheric air can be completed in a short time, which is crucial for recovering the sampler near the station using a helicopter. In addition, the sampler was designed to land on the sea or the ice field safely. We also simulated the flight trajectories ofthe sampler using the wind data observed at Syowa Station (69°00' S, 39°35' E), Antarctica. The results suggested that the sampler may land within approximately 150 km from the station, if air sampling is made in the summer season. Indeed, the trajectories, thus predicted, were confirmed to be valid by experiments made using a rubber balloon at Syowa Station on January 21 and February 6, 1995.
日本昭和南极站大气一氧化碳浓度变化
DOI：
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发表时间：
2008
期刊：
影响因子：
--
作者：
H. Yashiro;et al.
通讯作者：
et al.