干旱区生态环境知识资源中心(Arid): Assessment of reference evapotranspiration across an arid urban environment having poor data monitoring system

Arid

DOI	10.1002/hyp.13851
	Assessment of reference evapotranspiration across an arid urban environment having poor data monitoring system
	Shafieiyoun, Elham; Gheysari, Mahdi; Khiadani, Mehdi; Koupai, Jahangir Abedi; Shojaei, Paria; Moomkesh, Mohammad
通讯作者	Gheysari, M
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2020
卷号	34 期号:20 页码:4000-4016
英文摘要	Estimation of reference evapotranspiration (ET0) in urban areas is challenging but essential in arid urban climates. To evaluate ET(0)in an urban environment and non-urban areas, air temperature and relative humidity were measured at five different sites across the arid city of Isfahan, Iran, over 4 years. Wind speed and sunshine hours were obtained from an urban surrounding weather station over the same period and used to estimate ET0. Calculated ET(0)was compared with satellite-based ET(0)retrieved from the MOD16A2 PET product. Although MODIS PET was strongly correlated with the Valiantzas equation, it overestimated ET(0)and showed average accuracy (r= 0.93-0.94,RMSE= 1.18-1.28 mm/day,MBE= 0.73-0.84 mm/day). The highest ET(0)differences between an urban green space and a non-urban area were 1.1 and 0.87 mm/day, which were estimated by ground measurements and MODIS PET, respectively. The sensitivity of ET(0)to wind speed and sunshine hours indicated a significant effect on cumulative ET(0)at urban sites compared to the non-urban site, which has a considerable impact on the amount of irrigation required in those areas. Although MODIS PET requires improvement to accurately reflect field level microclimate conditions affecting ET0, it is beneficial to hydrological applications and water resource managers especially in areas where data is limited. In addition, our results indicated that using limited data methods or meteorological data from regional weather stations, leads to incorrect estimation of ET(0)in urban areas. Therefore, decision-makers and urban planners should consider the importance of precisely estimating ET(0)to optimize management of urban green space irrigation, especially in arid and semi-arid climates such as the city of Isfahan.
英文关键词	Isfahan city remote sensing sensitivity analysis urban green space urban microclimate water requirement
类型	Article
语种	英语
收录类别	SSCI
WOS记录号	WOS:000551452200001
WOS关键词	MONTEITH REFERENCE EVAPOTRANSPIRATION ; WATER REQUIREMENTS ; CLIMATIC VARIABLES ; REFERENCE CROP ; HEAT FLUXES ; LAND-COVER ; SENSITIVITY ; TRENDS ; TEMPERATURE ; ENERGY
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/2XILL650/325145
作者单位	[Shafieiyoun, Elham; Gheysari, Mahdi; Koupai, Jahangir Abedi; Shojaei, Paria; Moomkesh, Mohammad] Isfahan Univ Technol, Coll Agr, Dept Water Engn, Esfahan 8415683111, Iran; [Shafieiyoun, Elham; Khiadani, Mehdi] Edith Cowan Univ, Sch Engn, Joondalup, WA, Australia
推荐引用方式 GB/T 7714	Shafieiyoun, Elham,Gheysari, Mahdi,Khiadani, Mehdi,et al. Assessment of reference evapotranspiration across an arid urban environment having poor data monitoring system[J],2020,34(20):4000-4016.
APA	Shafieiyoun, Elham,Gheysari, Mahdi,Khiadani, Mehdi,Koupai, Jahangir Abedi,Shojaei, Paria,&Moomkesh, Mohammad.(2020).Assessment of reference evapotranspiration across an arid urban environment having poor data monitoring system.HYDROLOGICAL PROCESSES,34(20),4000-4016.
MLA	Shafieiyoun, Elham,et al."Assessment of reference evapotranspiration across an arid urban environment having poor data monitoring system".HYDROLOGICAL PROCESSES 34.20(2020):4000-4016.