globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-20-605-2016
Scopus记录号: 2-s2.0-84957600528
论文题名:
The effect of assimilating satellite-derived soil moisture data in SiBCASA on simulated carbon fluxes in Boreal Eurasia
作者: Van Der Molen M; K; , De Jeu R; A; M; , Wagner W; , Van Der Velde I; R; , Kolari P; , Kurbatova J; , Varlagin A; , Maximov T; C; , Kononov A; V; , Ohta T; , Kotani A; , Krol M; C; , Peters W
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2016
卷: 20, 期:2
起始页码: 605
结束页码: 624
语种: 英语
Scopus关键词: Drought ; Moisture ; Satellites ; Soil surveys ; Soils ; Vegetation ; Carbon cycles ; Carbon fluxes ; Global carbon cycle ; Interannual variation ; Passive microwaves ; Situ soil moistures ; Summer months ; Vegetation model ; Soil moisture ; annual variation ; ASCAT ; biomass ; carbon fixation ; carbon flux ; drought ; global perspective ; in situ measurement ; numerical model ; soil moisture ; vegetation cover ; Eurasia ; Europe
英文摘要: Boreal Eurasia is a region where the interaction between droughts and the carbon cycle may have significant impacts on the global carbon cycle. Yet the region is extremely data sparse with respect to meteorology, soil moisture, and carbon fluxes as compared to e.g. Europe. To better constrain our vegetation model SiBCASA, we increase data usage by assimilating two streams of satellite-derived soil moisture. We study whether the assimilation improved SiBCASA's soil moisture and its effect on the simulated carbon fluxes. By comparing to unique in situ soil moisture observations, we show that the passive microwave soil moisture product did not improve the soil moisture simulated by SiBCASA, but the active data seem promising in some aspects. The match between SiBCASA and ASCAT soil moisture is best in the summer months over low vegetation. Nevertheless, ASCAT failed to detect the major droughts occurring between 2007 and 2013. The performance of ASCAT soil moisture seems to be particularly sensitive to ponding, rather than to biomass. The effect on the simulated carbo n fluxes is large, 5-10% on annual GPP and TER, tens of percent on local NEE, and 2% on area-integrated NEE, which is the same order of magnitude as the inter-annual variations. Consequently, this study shows that assimilation of satellite-derived soil moisture has potentially large impacts, while at the same time further research is needed to understand under which conditions the satellite-derived soil moisture improves the simulated soil moisture. © Author(s) 2016.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78920
Appears in Collections:气候变化事实与影响

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作者单位: Meteorology and Air Quality Group, Wageningen University, P.O. Box 47, Wageningen, Netherlands; VU University Amsterdam, Department of Earth Sciences, De Boelelaan 1085, Amsterdam, Netherlands; Transmissivity B. V., Space Technology Centre, Huygensstraat 34, Noordwijk, Netherlands; Vienna University of Technology, Department of Geodesy and Geoinformation, Gusshausstrasse 27-29, Vienna, Austria; Department of Physics, University of Helsinki, Erik Palménin aukio 1, Helsinke, Finland; A. N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninsky Prospekt 33, Moscow, Russian Federation; Institute for Biological Problems of the Cryolithozone, 41 Lenin Ave., Yakutsk-Republic-of-Sakha-(Yakutia), Russian Federation; Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan; Centre for Isotope Research, Energy and Sustainability Research Institute Groningen, Groningen University, Groningen, Netherlands

Recommended Citation:
Van Der Molen M,K,, De Jeu R,et al. The effect of assimilating satellite-derived soil moisture data in SiBCASA on simulated carbon fluxes in Boreal Eurasia[J]. Hydrology and Earth System Sciences,2016-01-01,20(2)
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