气候变化领域集成服务门户(CCPortal): Improving the Noah-MP Model for Simulating Hydrothermal Regime of the Active Layer in the Permafrost Regions of the Qinghai-Tibet Plateau

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DOI	10.1029/2020JD032588
	Improving the Noah-MP Model for Simulating Hydrothermal Regime of the Active Layer in the Permafrost Regions of the Qinghai-Tibet Plateau
	Li X.; Wu T.; Zhu X.; Jiang Y.; Hu G.; Hao J.; Ni J.; Li R.; Qiao Y.; Yang C.; Ma W.; Wen A.; Ying X.
发表日期	2020
ISSN	2169897X
卷号	125 期号:16
英文摘要	Soil hydrothermal regime of the active layer in the permafrost regions of the Qinghai-Tibet Plateau (QTP) is important to the underlying permafrost and the climate change dynamics in Asia. However, a large bias still exists in current land surface models in the representation of soil temperature and moisture. This study assessed and augmented the Noah land surface model with multiparameterization options (Noah-MP) for simulating soil hydrothermal dynamics at the Tanggula (alpine meadow) and Beiluhe (alpine swamp) stations located in the permafrost regions of the QTP. The results showed that the default Noah-MP tended to underestimate soil temperature and moisture. Specifically, the default model overestimated the snow depth and duration due to the low snow sublimation rate. This resulted in a cold deviation in the soil temperature at two stations. Such underestimation was reduced by introducing a scheme that considered the sublimation loss from wind. Moreover, the remaining cold bias in the soil profiles of two stations was greatly resolved by a combined scheme of roughness length for heat (Z0h) and undercanopy aerodynamic resistance (ra,g). A soil thermal conductivity scheme, which can produce more realistic soil thermal conductivity in frozen soil, further improved the deep soil temperature simulation. The consideration of soil organic matter could mitigate the underestimation of the shallow soil moisture to some extent, but this improvement was more obvious at the Tanggula station, which had coarser mineral soil than the Beiluhe station. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	active layer; Noah-MP; Qinghai-Tibet Plateau; soil moisture; soil temperature
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185848
作者单位	Cryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
推荐引用方式 GB/T 7714	Li X.,Wu T.,Zhu X.,et al. Improving the Noah-MP Model for Simulating Hydrothermal Regime of the Active Layer in the Permafrost Regions of the Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2020,125(16).
APA	Li X..,Wu T..,Zhu X..,Jiang Y..,Hu G..,...&Ying X..(2020).Improving the Noah-MP Model for Simulating Hydrothermal Regime of the Active Layer in the Permafrost Regions of the Qinghai-Tibet Plateau.Journal of Geophysical Research: Atmospheres,125(16).
MLA	Li X.,et al."Improving the Noah-MP Model for Simulating Hydrothermal Regime of the Active Layer in the Permafrost Regions of the Qinghai-Tibet Plateau".Journal of Geophysical Research: Atmospheres 125.16(2020).