大气与环境光学学报 ›› 2010, Vol. 5 ›› Issue (4): 269-275.

• 大气光学 • 上一篇    下一篇

红外辐射光谱反演CO2浓度的敏感性研究

胡振华,方芳,顾学军,方黎   

  1. (中国科学院安徽光学精密机械研究所环境光谱学研究室,安徽 合肥 230031)
  • 收稿日期:2009-04-28 修回日期:2009-06-18 出版日期:2010-07-28 发布日期:2010-07-21
  • 通讯作者: 胡振华,(1983-),男,浙江人,博士研究生,主要研究方向为大气辐射传输。 E-mail:ssshzh@mail.ustc.edu.cn
  • 作者简介:胡振华,(1983-),男,浙江人,博士研究生,主要研究方向为大气辐射传输。
  • 基金资助:

    中国科学院知识创新工程重要方向项目(KGCX2-YW-418-3)资助

Sensitivity Research of CO2 Retrieval of Infrared Radiative Spectra

HU Zhen-hua, FANG Fang, GU Xue-jun, FANG Li   

  1. (Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Anhui Hefei 230031, China)
  • Received:2009-04-28 Revised:2009-06-18 Published:2010-07-28 Online:2010-07-21

摘要:

机载高分辨率光谱数据的测量具有空间分辨率高、信息量大的特点,且高光谱数据反演低层大气CO2浓度的灵敏度高。通过高分辨率大气辐射软件的数值模拟计算,使用1.57um(6315~6385 cm-1)波段反射的太阳光反演CO2浓度。研究结果表明只要探测器的信噪比(SNR)达到700:1和分辨率达到0.07 cm-1,可以探测到很小的CO2 (1%, 3.3 ppmv)变化。并分析了大气中的气溶胶和地表温度的变化对高分辨率CO2光谱数据的影响。

关键词: 大气辐射传输, 二氧化碳, 数值模拟

Abstract:

Airborne measurements of high-resolution spectral data are an innovative technology with high spatial resolution and informative features, and the high-resolution spectral data have high sensitivity of retrieving CO2 concentration near the surface of earth. The high-resolution atmospheric radiation software is used to calculate and choose the 1.57??m (6315~6385 cm-1) waveband CO2 high-resolution spectra to retrieve CO2 concentration. The results show that the high-resolution spectral data can detect very small CO2 (1%) changes with sufficient signal to noise ratio and resolution. Also the effects of aerosols in atmospheric and surface temperature change on the high-resolution spectral data of CO2 are analyzed.

Key words: atmospheric radiative transfer, CO2, numerical simulation

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