Comparison Analysis of Atmospheric Methane Absorption Cross Section
Methane is an important anthropogenic greenhouse gas and is increasing steadily since the industrial revolution.SCIAMACHY on ENVISAT is the first satellite instrument whose measurements are sensitive to concentration changes of methane gas at all altitude levels down to the Earths surface where the source/sink signals are largest.To retrieve the methane column amount from SCIAMACHY data,the methane absorption cross section is the prerequisite reference parameter.We based on theoretical calculation and calculate the methane cross section with HITRAN2004 and HITRAN2008 respectively.The results showed that there exits huge difference between the two cross sections.In order to improve the retrieval accuracy of methane column amount,we come to conclude that HITRAN2008 is the better choice for future calculation research.
Methane cross section HITRAN Comparison analysis
Liao Xiuying
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing ,China;Hunan University of Science and Technology, Graduate University of Chinese Academy of Sciences, Xiangtan, P.R.China;Graduate University of Chinese Academy of Sciences, Beijing, P.R.China
国际会议
沈阳
英文
661-664
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）