Evaluation of a new JMA aircraft flask sampling system and laboratory trace gas analysis system
Evaluation of a new JMA aircraft flask sampling system and laboratory trace gas analysis system
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新型 JMA 飞机烧瓶取样系统和实验室痕量气体分析系统的评估
DOI：
10.5194/amt-6-1257-2013
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发表时间：
2013
影响因子：
3.8
通讯作者：
Yusuke Baba
中科院分区：
文献类型：
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作者：
K. Tsuboi;H. Matsueda;Y. Sawa;Y. Niwa;Masamichi Nakamura;D. Kuboike;Kazuyuki Saito;H. Ohmori;S. Iwatsubo;Hidehiro Nishi;Y. Hanamiya;Kentaro Tsuji;Yusuke Baba
抽象的。作为日本气象厅（JMA）新的业务监测计划的一部分，我们建立并评估了一个烧瓶空气采样系统的货运C-130 H飞机，以及微量气体测量系统的烧瓶样品。在每次飞行期间，从神奈川县（靠近东京）和南鸟岛（位于东京东南近2000公里的一个岛屿）之间的飞机上的空调系统收集空气样本。在实际使用取样系统之前，通过在Minamitorishima上空1000英尺的低空进行特别协调的飞行，对取样的空气进行质量保证试验，并将烧瓶值与在地面获得的值进行比较。根据我们的储存试验，烧瓶样品在分析前几乎保持稳定。痕量气体测量系统除了非色散红外（NRFS）和真空紫外共振荧光（VURF）分析仪外，还有两台基于激光的分析仪，分别使用波长扫描腔衰荡光谱（WS-CRDS）和离轴集成腔输出光谱（ICOS）。用于测量烧瓶样品的基于激光的分析仪的实验室测试表明相对较高的再现性，CO2的总体精度小于± 0.06 ppm，CH4的总体精度小于± 0.68 ppb，CO的总体精度小于± 0.36 ppb，N2O的总体精度小于± 0.03 ppb。比较了在不同分析仪上同时进行的烧瓶空气样品测量。这些比较表明，基于激光的测量技术和目前使用的其他方法之间的平均测量偏差可以忽略不计。我们还估计，有没有显着的同位素效应的CH4，CO和N2O使用标准气体与工业同位素组成校准的激光为基础的分析仪，但CO2被发现具有同位素效应大于其分析精度。
Abstract. We established and evaluated a flask air sampling system on a cargo C-130H aircraft, as well as a trace gas measurement system for the flask samples, as part of a new operational monitoring program of the Japan Meteorological Agency (JMA). Air samples were collected during each flight, between Kanagawa Prefecture (near Tokyo) and Minamitorishima (an island located nearly 2000 km southeast of Tokyo), from the air-conditioning system on the aircraft. Prior to the operational employment of the sampling system, a quality assurance test of the sampled air was made by specially coordinated flights at a low altitude of 1000 ft over Minamitorishima and comparing the flask values with those obtained at the surface. Based on our storage tests, the flask samples remained nearly stable until analyses. The trace gas measurement system has, in addition to the nondispersive infrared (NDIR) and vacuum ultraviolet resonance fluorescence (VURF) analyzers, two laser-based analyzers using wavelength-scanned cavity ring-down spectroscopy (WS-CRDS) and off-axis integrated cavity output spectroscopy (ICOS). Laboratory tests of the laser-based analyzers for measuring flask samples indicated relatively high reproducibility with overall precisions of less than ±0.06 ppm for CO2, ±0.68 ppb for CH4, ±0.36 ppb for CO, and ±0.03 ppb for N2O. Flask air sample measurements, conducted concurrently on different analyzers were compared. These comparisons showed a negligible bias in the averaged measurements between the laser-based measurement techniques and the other methods currently in use. We also estimated that there are no significant isotope effects for CH4, CO and N2O using standard gases with industrial isotopic compositions to calibrate the laser-based analyzers, but CO2 was found to possess isotope effects larger than its analytical precision.
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影响因子：
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通讯作者：
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影响因子：
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作者：
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Y. Tohjima;K. Katsumata;I. Morino;H. Mukai;T. Machida;Isao Akama;Taketo Amari;U. Tsunogai
影响因子：
2.2
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Machida, T.;Matsueda, H.;Ogawa, T.
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Ogawa, T.
影响因子：
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Stephens, Britton B.;Gurney, Kevin R.;Denning, A. Scott
通讯作者：
Denning, A. Scott
影响因子：
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作者：
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通讯作者：
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