Observing the continental-scale carbon balance: assessment of sampling complementarity and redundancy in a terrestrial assimilation system by means of quantitative network design
Observing the continental-scale carbon balance: assessment of sampling complementarity and redundancy in a terrestrial assimilation system by means of quantitative network design
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DOI：
10.5194/acp-12-7867-2012
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发表时间：
2012-08
影响因子：
6.3
通讯作者：
T. Kaminski;P. Rayner;M. Vossbeck;M. Scholze;E. Koffi
中科院分区：
文献类型：
--
作者：
T. Kaminski;P. Rayner;M. Vossbeck;M. Scholze;E. Koffi
本文研究了陆地碳循环的异质性与观测网络优化设计之间的关系，将定量网络设计和碳循环数据同化方法结合起来，对欧洲陆地生物圈的异质性进行了描述，植物功能类型的多样性日益增加。我们采用三种类型的观测，烧瓶测量CO2浓度，连续测量CO2和逐点测量CO2通量。我们表明，通量测量是非常有效的相对homogeneous的情况下，但不强大的增加或未知的复杂性。在这里，一种混合方法是必要的，我们建议在开发综合碳观测系统时使用它。
This paper investigates the relationship between the heterogeneity of the terrestrial carbon cycle and the op- timal design of observing networks to constrain it. We com- bine the methods of quantitative network design and carbon- cycle data assimilation to a hierarchy of increasingly hetero- geneous descriptions of the European terrestrial biosphere as indicated by increasing diversity of plant functional types. We employ three types of observations, flask measurements of CO2 concentrations, continuous measurements of CO2 and pointwise measurements of CO2 flux. We show that flux measurements are extremely efficient for relatively homoge- neous situations but not robust against increasing or unknown complexity. Here a hybrid approach is necessary, and we rec- ommend its use in the development of integrated carbon ob- serving systems.