KOPRI Repository

Implication of hydrogen isotope measurements of CH4 and H2 for investigation of their atmospheric processes

Metadata Downloads
Title
Implication of hydrogen isotope measurements of CH4 and H2 for investigation of their atmospheric processes
Other Titles
메탄과 수소의 안전 동위 원소 측정을 이용한 대기 순환 이해
Authors
Rhee, Tae Siek
Keywords
hydrogen; isotope; methane; polar vortex; strarosphere
Issue Date
2009
Citation
Rhee, Tae Siek. 2009. Implication of hydrogen isotope measurements of CH4 and H2 for investigation of their atmospheric processes. 대한화학회. 대한화학회. 2009.04.17~.
Abstract
Earth’s atmosphere contains a variety of trace gases emitted by natural and anthropogenic processes. Some of these gases critically influence the global climate and human health, suggesting the importance of understanding the life cycle of these gases. Stable isotope analysis opens a window to find or to refine the sources of these trace gases associated with their characteristic isotope ratios, and to understand atmospheric processes taking place in the atmosphere by the use of isotope effects. Here I present how to utilize hydrogen isotope analyses of CH4 and H2 to investigate a various processes in the troposphere, the stratosphere, and the mesosphere. CH4 is produced on Earth’s surface dominantly by biological processes, emitted into the atmosphere from a various sources, and oxidized by the reaction with radicals ending up with CO2, H2O, and HCl. H2 is produced by high temperature processes and photochemical reactions of CH4 and other hydrocarbons, and disappears on soils by biotic uptake and/or by the reaction with radicals in the atmosphere. CH4 is a unique source of stratospheric H2 except import from the troposphere. In the mesosphere, photolysis of H2O produces H2. The aforementined source emissions and photochemical and biological processes of CH4 and H2 leave their trails of isotopic ratios, which provide valuable information to understand various aspects of the natural processes occurring in the atmosphere.
URI
http://repository.kopri.re.kr/handle/201206/7887
Conference Name
대한화학회
Conference Place
대한화학회
Conference Date
2009.04.17~
Files in This Item
There are no files associated with this item.
General Conditions
      ROMEO Green
    Can archive pre-print and post-print or publisher's version/PDF
      ROMEO Blue
    Can archive post-print (ie final draft post-refereeing) or publisher's version/PDF
      ROMEO Yellow
    Can archive pre-print (ie pre-refereeing)
      ROMEO White
    Archiving not formally supported

    qrcode

    Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

    Browse