Ultra-violet absorption cross sections of isotopically substituted nitrous oxide species:: 14N14NO, 15N14NO, 14N15NO and 15N15NO

被引：30
|
作者：
von Hessberg, P
Kaiser, J
Enghoff, MB
McLinden, CA
Sorensen, SL
Röckmann, T
Johnson, MS [1 ]
机构：
[1] Univ Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark
[2] Max Planck Inst Nucl Phys, Atmospher Phys Div, D-69117 Heidelberg, Germany
[3] Meteorol Serv Canada, Air Qual Res Branch, Toronto, ON, Canada
[4] Lund Univ, Synchrotron Radiat Res, Lund, Sweden
来源：
ATMOSPHERIC CHEMISTRY AND PHYSICS | 2004年 / 4卷
关键词：
D O I：
10.5194/acp-4-1237-2004
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The isotopically substituted nitrous oxide species (NNO)-N-14-N-14, (NNO)-N-15-N-14, (NNO)-N-14-N-15 and (NNO)-N-15-N-15 were investigated by ultra-violet (UV) absorption spectroscopy. High precision cross sections were obtained for the wavelength range 181 to 218 nm at temperatures of 233 and 283 K. These data are used to calculate photolytic isotopic fractionation constants as a function of wavelength. The fractionation constants were used in a three-dimensional chemical transport model in order to simulate the actual fractionation of N2O in the stratosphere, and the results were found to be in good agreement with field studies.
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页码：1237 / 1253
页数：17
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