物理学报Issue(12)：1-6,6.DOI:10.7498/aps.62.124206
直射太阳光红外吸收光谱技术遥测大气中二氧化碳柱浓度*
Study on remote sensing of carbon dioxide column concentration in the atmosphere by direct-sun infrared absorption spectroscopy∗
摘要
Abstract
The concentration of carbon dioxide in the atmosphere has been increasing continuously. This is a big concern with respect to the environment and climate changes and so on. A kind of ground-based low-resolution remote sensing system and a real-time spectral inversion method are presented for the real-time remote sensing column concentration of carbon dioxide. Based on continuous observation of this system in Hefei, the total atmospheric transmittance is real-timely obtained from the solar absorption spectrum. The column concentrations of carbon dioxide and oxygen are inversed from total atmospheric transmittance by line-by-line nonlinear least squares spectral inversion algorithm. The column concentration of oxygen is used as internal standard function to obtain the column average volume mixing ratio of carbon dioxide in total dry air column, and the precision is better than 3%.The average volume mixing ratio of carbon dioxide in dry-air column, from 12: 00 to 15:00 on September 25, 2012, is compared with observation results by Japanese greenhouse-gases satellite over the site in this period, showing that the relative deviation is less than 1%. Obviously, it is an effective way to measure greenhouse gases concentration with high precision and accuracy.关键词
红外吸收光谱技术/遥测/二氧化碳/柱浓度Key words
infrared absorption spectroscopy/remote sensing/carbon dioxide/column concentration引用本文复制引用
程巳阳,徐亮,高闽光,金岭,李胜,冯书香,刘建国,刘文清..直射太阳光红外吸收光谱技术遥测大气中二氧化碳柱浓度*[J].物理学报,2013,(12):1-6,6.基金项目
国家科技支撑计划(批准号:2012BAJ24B02)和国家自然科学基金(批准号:40905011,41105022)资助的课题 （批准号:2012BAJ24B02）
