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地基高分辨率傅里叶变换红外光谱反演环境大气中的CH4浓度变化

田园 孙友文 谢品华 刘诚 刘文清 刘建国 李昂 胡仁志 王薇 曾议

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地基高分辨率傅里叶变换红外光谱反演环境大气中的CH4浓度变化

田园, 孙友文, 谢品华, 刘诚, 刘文清, 刘建国, 李昂, 胡仁志, 王薇, 曾议

Observation of ambient CH4 variations using ground-based high resolution Fourier transform solar spectrometry

Tian Yuan, Sun You-Wen, Xie Pin-Hua, Liu Cheng, Liu Wen-Qing, Liu Jian-Guo, Li Ang, Hu Ren-Zhi, Wang Wei, Zeng Yi
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  • CH4在大气中的浓度较低(~1.8 ppmv)且混合较为均匀, 不同区域浓度差较小, 其在大气中微量变化的精确观测对反演技术提出了很高要求. 基于高分辨率(0.02 cm-1)傅里叶变换直射太阳光谱, 研究一种高精度、大尺度的CH4浓度反演方法, 高灵敏地观测CH4在大气强背景下的浓度变化. 先利用先验参数实现测量光谱的准确建模, 再采用非线性最小二乘光谱拟合和非线性逐次迭代相结合的方法反演CH4的垂直柱浓度(vertical column density, VCD), 并以7885 cm-1 O2 吸收窗口为参考, 反演CH4的柱平均干空气混合比浓度(column-averaged dry air mixing ratios) XCH4. CH4 VCD和XCH4拟合误差均小于1%, 且绝大多数XCH4反演值均位于Total Carbon Column Observing Network (TCCON)规定的4浓度的日变化规律, CH4 VCD随时间变化而减少, XCH4的日变化量小于0.02 ppmv.
    Concentration of CH4 in ambient atmosphere is quite low (~1.8 ppmv) and mixed well. So observation of CH4 variation with high precision has to rely on high-precision of inversion technique. This paper demonstrates the observation of CH4 variations using high resolution (0.02 cm-1) Fourier transform solar spectrometry, in which a high precision and large scale of retrieval algorithm is investigated. In the CH4VCD (vertical column density) retrieval, both a nonlinear least-square method and an iterative scheme are applied after the measured spectrum is modeled with various a-priori parameters. The XCH4 (column-averaged dry air mixing ratio) is calculated by using the O2 VCD derived from the 7885 cm-1 O2-A band. Fitting errors for both CH4 VCD and XCH4 are less than 1%, and most XCH4 retrievals are within the 4 variations are also investigated based on one typical daily observation. It shows that the daily CH4 VCD decreases with time and the variations of the XCH4 is within 0.02 ppmv.
    • 基金项目: 国家高新技术863机载专项(批准号: 2014AA06A508, 2014AA06A511)、安徽省科技攻关项目(批准号: 1301022083)和安徽省自然科学基金(批准号: 1308085QF124)资助的课题.
    • Funds: Project supported by the National High Technology Research and Development Program of China(Grant Nos. 2014AA06A508, 2014AA06A511), the Scientific and Technological Project of Anhui Province, China (Grant No. 1301022083), and the Natural Science Foundation of Anhui Province, China (Grant No. 1308085QF124).
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    Geibel M C, Gerbig C, Feist D G 2010 Atmos. Chem. Phys. 3 1363

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    Deutscher N M, Griffith D W T, Bryant G W, Wennberg P O, Toon G C, Washenfelder R A, Keppel-Aleks G, Wunch D, Yavin Y G, Allen N T, Blavier J F L, Jiménez R, Daube B C, Bright A V, Matross D M, Wofsy S C, Park S 2010 Atmos. Chem. Phys. 3 947

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    Wunch D, Toon G C, Wennberg P O, Wofsy S C, Stephens B, Fisher M L, Uchino O, Abshire J B, Bernath P F, Biraud S C, Blavier J F L, Boone C D, Bowman K P, Browell E V, Campos T, Connor B J, Daube B C, Deutscher N M, Diao M, Elkins J W, Gerbig C, Gottlieb E, Griffith D W T, Hurst D F, Jiménez R, Keppel-Aleks G, Kort E A, Macatangay R, Machida T, Matsueda H, Moore F L, Morino I, Park S, Robinson J, Roehl C M, Sawa Y, Sherlock V, Sweeney C, Tanaka T, Zondlo M A 2010 Atmos. Meas. Tech. 3 1351

    [12]

    Keppel-Aleks G, Toon G C, Wennberg P O, Deutscher N M 2007 Appl. Opt. 46 4774

    [13]

    Messerschmidt J, Macatangay R, Notholt J, Warneke T, Weinzierl C 2010 Tellus B 62 749

    [14]

    Gloudemans A M S, Krol M C, Meirink J F, Laat A T J, Werf G R, Schrijver H, Broek M M P, Aben I 2006 Geophys. Res. Lett. 33 L16807

    [15]

    Saitoh N, Touno M, Hayashida S, Imasu R, Shiomi K, Yokota T, Yoshida Y, Machida T, Matsueda H, Sawa Y 2012 SOLA 8 145

    [16]

    Hamazaki T, Kaneko Y, Kuze A, Kondo K 2005 SPIE 5659 73

    [17]

    Keppel-Aleks G, Wennberg P O, Schneider T 2011 Atmos. Chem. Phys. 11 3581

    [18]

    Perliski L M, Solomon S 1993 J. Geophys. Res. Atmos. 98 10363

    [19]

    Olsen S C, Randerson J T 2004 J. Geophys. Res. 109 D02301

    [20]

    Sun Y W, Liu W Q, Xie P H, Chan K L, Zeng Y, Xu J, Li A, Si F Q, Li X X 2012 Acta Phys. Sin. 61 140705 (in Chinese) [孙友文, 刘文清, 谢品华, 陈嘉乐, 曾议, 徐晋, 李昂, 司福祺, 李先欣 2012 物理学报 61 140705]

    [21]

    Sun Y W, Liu W Q, Wang S M, Huang S H, Zeng Y, Xie P H, Chen J, Wang Y P, Si F Q 2012 Acta Phys. Sin. 61 140704 (in Chinese) [孙友文, 刘文清, 汪世美, 黄书华, 曾议, 谢品华, 陈军, 王亚萍, 司福祺 2012 物理学报 61 140704]

  • [1]

    Intergovernmental Panel on Climate Change (IPCC) 2007 Climate Change 2007: the Physical Science Basis (Geneva: IPCC Secretariat) p2

    [2]

    Wunch D, Toon G C, Blavier J F L, Washenfelder R A, Notholt J, Connor B J, Griffith D W T, Sherlock V, Wennberg P O 2011 Physical and Engineering Sciences 369 1943

    [3]

    Macatangay R, Warneke T, Gerbig C, Körner S, Ahmadov R, Heimann M, Notholt J 2008 Atmos. Chem. Phys. 8 2555

    [4]

    Hartmann J M, Tran H, Toon G C 2009 Atmos. Chem. Phys. 9 7303

    [5]

    Schneider M, Sepúlveda E, García O, Hase F, Blumenstock T 2010 Atmos. Meas. Tech. 3 1785

    [6]

    Houweling S, Aben I, Breon F M, Chevallier F, Deutscher N M, Engelen R, Gerbig C, Griffith D W T, Hungershoefer K, Macatangay R, Marshall J, Notholt J, Peters W, Serrar S 2010 Atmos. Chem. Phys. 10 9981

    [7]

    Geibel M C, Gerbig C, Feist D G 2010 Atmos. Chem. Phys. 3 1363

    [8]

    Deutscher N M, Griffith D W T, Bryant G W, Wennberg P O, Toon G C, Washenfelder R A, Keppel-Aleks G, Wunch D, Yavin Y G, Allen N T, Blavier J F L, Jiménez R, Daube B C, Bright A V, Matross D M, Wofsy S C, Park S 2010 Atmos. Chem. Phys. 3 947

    [9]

    Krijger J M, Van W M, Aben I, Frey R 2007 Atmos. Chem. Phys. 7 2881

    [10]

    Denning A S, Randall D A, Collatz G J, Sellers P J 1996 Tellus B 48 543

    [11]

    Wunch D, Toon G C, Wennberg P O, Wofsy S C, Stephens B, Fisher M L, Uchino O, Abshire J B, Bernath P F, Biraud S C, Blavier J F L, Boone C D, Bowman K P, Browell E V, Campos T, Connor B J, Daube B C, Deutscher N M, Diao M, Elkins J W, Gerbig C, Gottlieb E, Griffith D W T, Hurst D F, Jiménez R, Keppel-Aleks G, Kort E A, Macatangay R, Machida T, Matsueda H, Moore F L, Morino I, Park S, Robinson J, Roehl C M, Sawa Y, Sherlock V, Sweeney C, Tanaka T, Zondlo M A 2010 Atmos. Meas. Tech. 3 1351

    [12]

    Keppel-Aleks G, Toon G C, Wennberg P O, Deutscher N M 2007 Appl. Opt. 46 4774

    [13]

    Messerschmidt J, Macatangay R, Notholt J, Warneke T, Weinzierl C 2010 Tellus B 62 749

    [14]

    Gloudemans A M S, Krol M C, Meirink J F, Laat A T J, Werf G R, Schrijver H, Broek M M P, Aben I 2006 Geophys. Res. Lett. 33 L16807

    [15]

    Saitoh N, Touno M, Hayashida S, Imasu R, Shiomi K, Yokota T, Yoshida Y, Machida T, Matsueda H, Sawa Y 2012 SOLA 8 145

    [16]

    Hamazaki T, Kaneko Y, Kuze A, Kondo K 2005 SPIE 5659 73

    [17]

    Keppel-Aleks G, Wennberg P O, Schneider T 2011 Atmos. Chem. Phys. 11 3581

    [18]

    Perliski L M, Solomon S 1993 J. Geophys. Res. Atmos. 98 10363

    [19]

    Olsen S C, Randerson J T 2004 J. Geophys. Res. 109 D02301

    [20]

    Sun Y W, Liu W Q, Xie P H, Chan K L, Zeng Y, Xu J, Li A, Si F Q, Li X X 2012 Acta Phys. Sin. 61 140705 (in Chinese) [孙友文, 刘文清, 谢品华, 陈嘉乐, 曾议, 徐晋, 李昂, 司福祺, 李先欣 2012 物理学报 61 140705]

    [21]

    Sun Y W, Liu W Q, Wang S M, Huang S H, Zeng Y, Xie P H, Chen J, Wang Y P, Si F Q 2012 Acta Phys. Sin. 61 140704 (in Chinese) [孙友文, 刘文清, 汪世美, 黄书华, 曾议, 谢品华, 陈军, 王亚萍, 司福祺 2012 物理学报 61 140704]

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出版历程
  • 收稿日期:  2014-12-09
  • 修回日期:  2015-01-13
  • 刊出日期:  2015-04-05

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