气候变化领域集成服务门户(CCPortal): Improving the Noah Land Surface Model in Arid Regions with an Appropriate Parameterization of the Thermal Roughness Length

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DOI	10.1175/2010JHM1185.1
	Improving the Noah Land Surface Model in Arid Regions with an Appropriate Parameterization of the Thermal Roughness Length
	Chen, Yingying; Yang, Kun; Zhou, Degang; Qin, Jun; Guo, Xiaofeng
通讯作者	Chen, YY (通讯作者)
发表日期	2010
ISSN	1525-755X
起始页码	995
结束页码	1006
卷号	11 期号:4
英文摘要	Daytime land surface temperatures in arid and semiarid regions are typically not well simulated in current land surface models (LSMs). This study first evaluates the importance of parameterizing the thermal roughness length (z(0h)) to model the surface temperature (T(sfc)) and turbulent sensible heat flux (H) in arid regions. Six schemes for z(0h) are implemented into the Noah LSM, revealing the high sensitivity of the simulations to its parameterization. Comparisons are then performed between the original Noah LSM and a revised version with a novel z(0h) scheme against observations at four arid or semiarid sites, including one in Arizona and three in western China. The land they cover is sparse grass or bare soil. The results indicate that the original Noah LSM significantly underestimates T(sfc) and overestimates H in the daytime, whereas the revised model can simulate well both T(sfc) and H simultaneously. The improved version benefits from the successful modeling of the diurnal variation of z(0h), which the original model cannot produce.
关键词	MESOSCALE ETA-MODEL TIBETAN PLATEAU PRACTICAL NOTES PART I IMPLEMENTATION EVAPORATION HYDROLOGY WEATHER FLUXES
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000280955600010
来源期刊	JOURNAL OF HYDROMETEOROLOGY
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/257720
推荐引用方式 GB/T 7714	Chen, Yingying,Yang, Kun,Zhou, Degang,et al. Improving the Noah Land Surface Model in Arid Regions with an Appropriate Parameterization of the Thermal Roughness Length[J]. 中国科学院青藏高原研究所,2010,11(4).
APA	Chen, Yingying,Yang, Kun,Zhou, Degang,Qin, Jun,&Guo, Xiaofeng.(2010).Improving the Noah Land Surface Model in Arid Regions with an Appropriate Parameterization of the Thermal Roughness Length.JOURNAL OF HYDROMETEOROLOGY,11(4).
MLA	Chen, Yingying,et al."Improving the Noah Land Surface Model in Arid Regions with an Appropriate Parameterization of the Thermal Roughness Length".JOURNAL OF HYDROMETEOROLOGY 11.4(2010).