Temperature dependent high-resolution infrared photoabsorption cross-sections of trifluoromethyl sulphur pentafluoride

被引：20
|
作者：
Kendall, PA
Mason, NJ
Buchanan, GA
Marston, G
Tegeder, P
Dawes, A
Eden, S
Limao-Vieira, P
Newnham, DA
机构：
[1] UCL, Dept Phys & Astron, London WC1E 6BT, England
[2] Univ Reading, Dept Chem, Reading RG6 6AD, Berks, England
[3] Rutherford Appleton Lab, Space Sci & Technol Dept, Div Atmospher Sci, Mol Spectroscopy Facil, Didcot OX11 0QX, Oxon, England
[4] Ctr Fis Mol, P-1049001 Lisbon, Portugal
[5] Univ Nova Lisboa, FCT, Dept Fis, P-2829516 Caparica, Portugal
来源：
CHEMICAL PHYSICS | 2003年 / 287卷 / 1-2期
关键词：
photoabsorption; spectroscopy; greenhouse gas; SF5CF3; cross-sections;
D O I：
10.1016/S0301-0104(02)00985-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Absolute infrared photoabsorption cross-sections have been measured over the range 600-1500 cm(-1) for the powerful greenhouse gas SF5CF3 at high resolution (0.03 cm(-1)) and at temperatures between 203 and 298 K. Our data indicate that the integrated absorption intensity shows a weak negative dependence on temperature. It is concluded therefore that previous calculations of radiative forcings and global warming potentials based on room-temperature data are reasonable estimates for the atmosphere, but may be low by a few percent. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：137 / 142
页数：6
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