Global CO2fluxes inferred from surface air‐sample measurements and from TCCON retrievals of the CO2 total column
Global CO2fluxes inferred from surface air‐sample measurements and from TCCON retrievals of the CO2 total column
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DOI：
10.1029/2011gl049899
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发表时间：
2011-12
影响因子：
5.2
通讯作者：
Frédéric Chevallier;N. Deutscher;T. J. Conway;P. Ciais;L. Ciattaglia;S. Dohe;M. Fröhlich;Á. Gómez-Peláez;David W. T. Griffith;Frank Hase;László Haszpra;P. Krummel;E. Kyrö;C. Labuschagne;R. Langenfelds;T. Machida;F. Maignan;H. Matsueda;I. Morino;J. Notholt;M. Ramonet;Y. Sawa;Martina Schmidt;V. Sherlock;Paul Steele;Kim Strong;R. Sussmann;P. Wennberg;S. Wofsy;D. Worthy;D. Wunch;M. Zimnoch
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文献类型：
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作者：
Frédéric Chevallier;N. Deutscher;T. J. Conway;P. Ciais;L. Ciattaglia;S. Dohe;M. Fröhlich;Á. Gómez-Peláez;David W. T. Griffith;Frank Hase;László Haszpra;P. Krummel;E. Kyrö;C. Labuschagne;R. Langenfelds;T. Machida;F. Maignan;H. Matsueda;I. Morino;J. Notholt;M. Ramonet;Y. Sawa;Martina Schmidt;V. Sherlock;Paul Steele;Kim Strong;R. Sussmann;P. Wennberg;S. Wofsy;D. Worthy;D. Wunch;M. Zimnoch
我们首次对总碳柱观测网络 (TCCON) 14 个站的 CO2 表面通量全球分布进行了估计。该反演的评估基于 1) 与地表空气样本测量的经典反演通量的比较，以及 2) 根据反演通量计算出的 CO2 混合比与此处分析的两年（2009 年和 2010 年）进行的独立飞机测量的比较。前一个测试显示北半球相似的季节周期以及两个数据集反演之间一致的区域碳预算，尽管 TCCON 反演似乎不太精确比经典的反转。后一个测试证实，与假设或先前的通量相比，TCCON 反演提高了表面通量的质量（即降低了不确定性）。尽管输运模型仍存在缺陷，基于地表空气样本的反演与基于 TCCON 的反演之间的一致性开启了基于两种数据源的组合提高通量反演的准确性和鲁棒性的可能性，并证实了 CO2 柱星载监测的有用性。
We present the first estimate of the global distribution of CO2surface fluxes from 14 stations of the Total Carbon Column Observing Network (TCCON). The evaluation of this inversion is based on 1) comparison with the fluxes from a classical inversion of surface air‐sample‐measurements, and 2) comparison of CO2mixing ratios calculated from the inverted fluxes with independent aircraft measurements made during the two years analyzed here, 2009 and 2010. The former test shows similar seasonal cycles in the northern hemisphere and consistent regional carbon budgets between inversions from the two datasets, even though the TCCON inversion appears to be less precise than the classical inversion. The latter test confirms that the TCCON inversion has improved the quality (i.e., reduced the uncertainty) of the surface fluxes compared to the assumed or prior fluxes. The consistency between the surface‐air‐sample‐based and the TCCON‐based inversions despite remaining flaws in transport models opens the possibility of increased accuracy and robustness of flux inversions based on the combination of both data sources and confirms the usefulness of space‐borne monitoring of the CO2 column.