摘要
介绍了基于多轴差分吸收光谱技术(MAX-DOAS)反演对流层NO2的方法。利用差分吸收光谱技术(DOAS),扣除太阳夫琅和费结构及Ring效应的影响,拟合得到了大气中NO2的差分斜柱浓度dSCD,结合不同观测方向的测量结果分析得到了对流层大气中NO2的差分斜柱浓度(ΔSCD),结合辐射传输模型SCIATRAN计算得到了大气质量因子(AMF),并进一步计算得到了对流层NO2的垂直柱浓度(VCD)信息。为确保数据的准确性和可比性,将计算结果与长光程差分吸收光谱仪(LP-DOAS)的测量结果进行对比,二者具有较好的一致性,其相关系数R2分别为0.940 27和0.969 24。
A method of retrieving NO2 in troposphere based on Multi Axis Differential Optical Absorption Spectroscopy（MAX-DOAS） was introduced.The differential slant column density（dSCD） of NO2 was evaluated by Differential Optical Absorption Spectroscopy（DOAS）,removing the Fraunhofer structure and Ring effect.Combining the results of different observing directions,the tropospheric NO2 differential slant column density（ΔSCD） was evaluated,and the air mass factor（AMF） was calculated with the radiative transfer model SCIATRAN and the tropospheric NO2 vertical column density（VCD） was retrieved.To ensure the accuracy of the results,it was compared with the results of long path differential optical absorption spectroscopy（LP-DOAS）,a good accordance was shown with the correlation coefficients of 0.940 27 and 0.969 24.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2010年第9期2464-2469,共6页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(40805015)
国家高技术研究发展计划(863)项目(2006AA06A303)
中国科学院知识创新工程重大项目(kzcx1-yw-06-01)资助
关键词
大气光学
对流层垂直柱浓度
多轴差分吸收光谱技术
大气质量因子
Atmospheric optics
Tropospheric vertical column density
Multi-axis differential optical absorption spectroscopy
Air mass factor
