干旱区生态环境知识资源中心(Arid): Comparative evaluation of four actual evapotranspiration models over different ecosystems and climate zones in China

Arid

DOI	10.2166/wcc.2024.724
	Comparative evaluation of four actual evapotranspiration models over different ecosystems and climate zones in China
	Yuan, Mengjia; Gan, Guojing; Bu, Jingyi; Su, Yanxin; Ma, Hongyu; Liu, Xianghe; Gao, Yanchun
通讯作者	Gao, YC
来源期刊	JOURNAL OF WATER AND CLIMATE CHANGE
ISSN	2040-2244
EISSN	2408-9354
出版年	2024
卷号	15 期号:7 页码:3115-3137
英文摘要	To better understand the discrepancies in evapotranspiration (ET) simulations between ET models, we intercompared four models in China: Priestley-Taylor Jet Propulsion Laboratory (PT-JPL), Penman-Montieth-Leuning Version 2 (PML-V2), Sigmoid Generalized Complementary Function (SGCF), Mapping Evapotranspiration at High Resolution with Internalized Calibration (METRIC). Data from 18 flux sites were used to evaluate the model performance at daytime (when incident shortwave radiation is greater than 20 W/m2) scales. To compare more fairly, we took the intersection of the outputs from four models for the analyses in the main text. All models yielded acceptable results, with PML-V2 or SGCF performing best at most sites. The average coefficient of determination and root mean square error among all sites of LE (latent heat of ET) were 0.72 and 51.71 W/m2 for PT-JPL, 0.80 and 46.65 W/m2 for PML-V2, 0.79 and 41.13 W/m2 for SGCF, 0.70 and 51.09 W/m2 for METRIC. PT-JPL and PML-V2 underestimated ET at most sites, whereas SGCF overestimated, potentially due to uncertainties in the vegetation indices and ET constraint parameters. Compared to measurements, PT-JPL underestimated the proportion of transpiration to evapotranspiration (0.81 versus 0.59), while PML-V2 overestimated (0.81 versus 0.90). Furthermore, all models performed best in the semi-arid zone dominated by grassland sites.
英文关键词	evapotranspiration METRIC PML-V2 PT-JPL SGCF
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001229774200001
WOS关键词	ENERGY-BALANCE CLOSURE ; EDDY-COVARIANCE ; COMPLEMENTARY PRINCIPLE ; HEAT-FLUX ; EVAPORATION ; CALIBRATION ; VEGETATION ; SOIL
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404757
推荐引用方式 GB/T 7714	Yuan, Mengjia,Gan, Guojing,Bu, Jingyi,et al. Comparative evaluation of four actual evapotranspiration models over different ecosystems and climate zones in China[J],2024,15(7):3115-3137.
APA	Yuan, Mengjia.,Gan, Guojing.,Bu, Jingyi.,Su, Yanxin.,Ma, Hongyu.,...&Gao, Yanchun.(2024).Comparative evaluation of four actual evapotranspiration models over different ecosystems and climate zones in China.JOURNAL OF WATER AND CLIMATE CHANGE,15(7),3115-3137.
MLA	Yuan, Mengjia,et al."Comparative evaluation of four actual evapotranspiration models over different ecosystems and climate zones in China".JOURNAL OF WATER AND CLIMATE CHANGE 15.7(2024):3115-3137.