Cryogenic Air Sampling System for Measurements of the Concentrations of Stratospheric Trace Gases and Their Isotopic Ratios over Antarctica.

• Honda Hideyuki

  The Institute of Space and Astronautical Science

• Aoki Shuhji

  National Institute of Polar Research

• Nakazawa Takakiyo

  Center for Atmospheric and Oceanic Studies, Faculty of Science, Tohoku University

• Morimoto Shinji

  National Institute of Polar Research

• Yajima Nobuyuki

  The Institute of Space and Astronautical Science

Bibliographic Information

Other Title

• Cryogenic Air Sampling System for Measu

Abstract

In order to measure the concentrations of trace gases such as CO₂, CH₄, N₂O and halocarbons and the isotopic ratios of δ¹³C, δ¹⁸O and Δ¹⁴C of CO₂ 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 1_STP 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 of the 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.

Journal

• Journal of geomagnetism and geoelectricity

  Journal of geomagnetism and geoelectricity 48 (9), 1145-1155, 1996

  Society of Geomagnetism and Earth, Planetary and Space Sciences

Keywords

• General Earth and Planetary Sciences
• General Environmental Science

Details

• CRID: 1390282681487786240
• NII Article ID: 130003559452
• NII Article ID: 10002202262
• NII Book ID: AA00698879
• DOI: 10.5636/jgg.48.1145
• ISSN: 21855765
• ISSN: 00221392
• NDL BIB ID: 4090610
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4090610
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed