气候变化领域集成服务门户(CCPortal): ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation

CCPortal

DOI	10.5194/gmd-11-121-2018
	ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation
	Guimberteau, Matthieu; Zhu, Dan; Maignan, Fabienne; Huang, Ye; Yue, Chao; Dantec-Nedelec, Sarah; Ottle, Catherine; Jornet-Puig, Albert; Bastos, Ana; Laurent, Pierre; Goll, Daniel; Bowring, Simon; Chang, Jinfeng; Guenet, Bertrand; Tifafi, Marwa; Peng, Shushi; Krinner, Gerhard; Ducharne, Agnes; Wang, Fuxing; Wang, Tao; Wang, Xuhui; Wang, Yilong; Yin, Zun; Lauerwald, Ronny; Joetzjer, Emilie; Qiu, Chunjing; Kim, Hyungjun; Ciais, Philippe
通讯作者	Guimberteau, M ; Zhu, D (通讯作者)
发表日期	2018
ISSN	1991-959X
EISSN	1991-9603
起始页码	121
结束页码	163
卷号	11 期号:1
英文摘要	The high-latitude regions of the Northern Hemisphere are a nexus for the interaction between land surface physical properties and their exchange of carbon and energy with the atmosphere. At these latitudes, two carbon pools of planetary significance-those of the permanently frozen soils (permafrost), and of the great expanse of boreal forest are vulnerable to destabilization in the face of currently observed climatic warming, the speed and intensity of which are expected to increase with time. Improved projections of future Arctic and boreal ecosystem transformation require improved land surface models that integrate processes specific to these cold biomes. To this end, this study lays out rel-evant new parameterizations in the ORCHIDEE-MICT land surface model. These describe the interactions between soil carbon, soil temperature and hydrology, and their resulting feedbacks on water and CO2 fluxes, in addition to a recently developed fire module. Outputs from ORCHIDEE-MICT, when forced by two climate input datasets, are extensively evaluated against (i) temperature gradients between the atmosphere and deep soils, (ii) the hydrological components comprising the water balance of the largest high-latitude basins, and (iii) CO2 flux and carbon stock observations. The model performance is good with respect to empirical data, despite a simulated excessive plant water stress and a positive land surface temperature bias. In addition, acute model sensitivity to the choice of input forcing data suggests that the calibration of model parameters is strongly forcing-dependent. Overall, we suggest that this new model design is at the forefront of current efforts to reliably estimate future perturbations to the high-latitude terrestrial environment.
关键词	GLOBAL VEGETATION MODEL SNOW WATER EQUIVALENT SOIL ORGANIC-CARBON LEAF-AREA INDEX PHOTOSYNTHETICALLY ACTIVE RADIATION MICROWAVE RADIOMETER DATA GROWING STOCK VOLUME HYDRAULIC CONDUCTIVITY INCORPORATING SPITFIRE THERMAL-CONDUCTIVITY
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000419991600001
来源期刊	GEOSCIENTIFIC MODEL DEVELOPMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259387
推荐引用方式 GB/T 7714	Guimberteau, Matthieu,Zhu, Dan,Maignan, Fabienne,et al. ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation[J]. 中国科学院青藏高原研究所,2018,11(1).
APA	Guimberteau, Matthieu.,Zhu, Dan.,Maignan, Fabienne.,Huang, Ye.,Yue, Chao.,...&Ciais, Philippe.(2018).ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation.GEOSCIENTIFIC MODEL DEVELOPMENT,11(1).
MLA	Guimberteau, Matthieu,et al."ORCHIDEE-MICT (v8.4.1), a land surface model for the high latitudes: model description and validation".GEOSCIENTIFIC MODEL DEVELOPMENT 11.1(2018).