气候变化领域集成服务门户(CCPortal): Improved parameterization of snow albedo in Noah coupled with Weather Research and Forecasting: applicability to snow estimates for the Tibetan Plateau

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DOI	10.5194/hess-25-4967-2021
	Improved parameterization of snow albedo in Noah coupled with Weather Research and Forecasting: applicability to snow estimates for the Tibetan Plateau
	Liu, Lian; Ma, Yaoming; Menenti, Massimo; Su, Rongmingzhu; Yao, Nan; Ma, Weiqiang
通讯作者	Ma, YM (通讯作者)
发表日期	2021
ISSN	1027-5606
EISSN	1607-7938
起始页码	4967
结束页码	4981
卷号	25 期号:9
英文摘要	Snow albedo is important to the land surface energy balance and to the water cycle. During snowfall and subsequent snowmelt, snow albedo is usually parameterized as functions of snow-related variables in land surface models. However, the default snow albedo scheme in the widely used Noah land surface model shows evident shortcomings in land-atmosphere interaction estimates during snow events on the Tibetan Plateau. Here, we demonstrate that our improved snow albedo scheme performs well after including snow depth as an additional factor. By coupling the Weather Research and Forecasting (WRF) and Noah models, this study comprehensively evaluates the performance of the improved snow albedo scheme in simulating eight snow events on the Tibetan Plateau. The modeling results are compared with WRF run with the default Noah scheme and in situ observations. The improved snow albedo scheme significantly outperforms the default Noah scheme in relation to air temperature, albedo and sensible heat flux estimates by alleviating cold bias estimates, albedo overestimates and sensible heat flux underestimates, respectively. This in turn contributes to more accurate reproductions of snow event evolution. The averaged root mean square error (RMSE) relative reductions (and relative increase in correlation coefficients) for air temperature, albedo, sensible heat flux and snow depth reach 27% (5 %), 32% (69 %), 13% (17 %) and 21% (108 %), respectively. These results demonstrate the strong potential of our improved snow albedo parameterization scheme for snow event simulations on the Tibetan Plateau. Our study provides a theoretical reference for researchers committed to further improving the snow albedo parameterization scheme.
关键词	SURFACE ALBEDO SPATIAL-RESOLUTION OPTICAL-PROPERTIES SPECTRAL ALBEDO GRAIN SHAPE MODEL IMPACT SCHEMES CLIMATE IMPLEMENTATION
语种	英语
WOS研究方向	Geology ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000695656500001
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
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/260322
推荐引用方式 GB/T 7714	Liu, Lian,Ma, Yaoming,Menenti, Massimo,et al. Improved parameterization of snow albedo in Noah coupled with Weather Research and Forecasting: applicability to snow estimates for the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2021,25(9).
APA	Liu, Lian,Ma, Yaoming,Menenti, Massimo,Su, Rongmingzhu,Yao, Nan,&Ma, Weiqiang.(2021).Improved parameterization of snow albedo in Noah coupled with Weather Research and Forecasting: applicability to snow estimates for the Tibetan Plateau.HYDROLOGY AND EARTH SYSTEM SCIENCES,25(9).
MLA	Liu, Lian,et al."Improved parameterization of snow albedo in Noah coupled with Weather Research and Forecasting: applicability to snow estimates for the Tibetan Plateau".HYDROLOGY AND EARTH SYSTEM SCIENCES 25.9(2021).