气候变化领域集成服务门户(CCPortal): Albedo Parametrizations for the Laohugou Glacier No.12 in the Qilian Mountains-Previous Models and an Alternative Approach

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DOI	10.3389/feart.2021.798027
	Albedo Parametrizations for the Laohugou Glacier No.12 in the Qilian Mountains-Previous Models and an Alternative Approach
	Wang, Lihui; Zhang, Dongwei; Steiner, Jakob F.; He, Xiaobo; Chen, Jizu; Liu, Yushuo; Li, Yanzhao; Jin, Zizhen; Qin, Xiang
通讯作者	Qin, X (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China.
发表日期	2022
EISSN	2296-6463
卷号	9
英文摘要	Accurate estimates of albedo can be crucial for energy balance models of glaciers. A number of algorithms exist which are often site dependent and rely on accurate measurements or estimates of snow depth. Using the well-established COSIMA model we simulate the energy and mass balance of the Laohugou Glacier No.12 in the Qilian Mountains, on the northern fringe of the Qinghai-Tibetan Plateau, a glacier that has been well studied in the past. Using energy flux and mass balance measurements between 2010 and 2015 we were able to validate the model over multiple seasons. Using the original albedo parametrization, the model fails to reproduce the observed mass balance. We show that this is due to the failure to estimate snow depth accurately. We therefore applied two alternative albedo algorithms, one well established example and one new parametrization only dependent on temperature and time since last snow fall. As a result, mass balance simulations improve considerably from a RMSE of 0.53 m w.e. for the original parametrization to 0.39 and 0.19 m w.e. for the uncalibrated established and the new calibrated model respectively. Modelled albedo during the ablation period (NSE = 0.05, R-2 = 0.33) is more accurate than during the accumulation period (NSE = -0.37, R-2 = 0.04). Testing the new model at another glacier on the Tibetan Plateau shows that a local recalibration of parameters remains necessary to achieve satisfying results. Investigations into the effect of impurities in snow, regional moisture sources and changing surface characteristics with rising temperatures will be crucial for accurate projections into the future.
关键词	SURFACE-ENERGY-BALANCE MASS-BALANCE ZHADANG GLACIER ICE CAP TIBETAN PLATEAU ABLATION ZONE SNOW DEPTH SHRINKAGE RADIATION RUNOFF
英文关键词	albedo; glacier mass balance; Tibetan plateau; high-mountain Asia; energy balance model
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000766333100001
来源期刊	FRONTIERS IN EARTH SCIENCE
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/253946
作者单位	[Wang, Lihui; He, Xiaobo; Chen, Jizu; Liu, Yushuo; Li, Yanzhao; Jin, Zizhen; Qin, Xiang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Wang, Lihui; Liu, Yushuo; Li, Yanzhao; Jin, Zizhen] Univ Chinese Acad Sci, Beijing, Peoples R China; [Zhang, Dongwei] SINOPEC Petr Explorat & Prod Res Inst, Beijing, Peoples R China; [Steiner, Jakob F.] Univ Utrecht, Dept Phys Geog, Utrecht, Netherlands; [Steiner, Jakob F.] Int Ctr Integrated Mt Dev, Lalitpur, Nepal
推荐引用方式 GB/T 7714	Wang, Lihui,Zhang, Dongwei,Steiner, Jakob F.,et al. Albedo Parametrizations for the Laohugou Glacier No.12 in the Qilian Mountains-Previous Models and an Alternative Approach[J]. 中国科学院西北生态环境资源研究院,2022,9.
APA	Wang, Lihui.,Zhang, Dongwei.,Steiner, Jakob F..,He, Xiaobo.,Chen, Jizu.,...&Qin, Xiang.(2022).Albedo Parametrizations for the Laohugou Glacier No.12 in the Qilian Mountains-Previous Models and an Alternative Approach.FRONTIERS IN EARTH SCIENCE,9.
MLA	Wang, Lihui,et al."Albedo Parametrizations for the Laohugou Glacier No.12 in the Qilian Mountains-Previous Models and an Alternative Approach".FRONTIERS IN EARTH SCIENCE 9(2022).