气候变化领域集成服务门户(CCPortal): On downward shortwave and longwave radiations over high altitude regions: Observation and modeling in the Tibetan Plateau

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DOI	10.1016/j.agrformet.2009.08.004
	On downward shortwave and longwave radiations over high altitude regions: Observation and modeling in the Tibetan Plateau
	Yang, Kun; He, Jie; Tang, Wenjun; Qin, Jun; Cheng, Charles C. K.
通讯作者	Yang, K (通讯作者)
发表日期	2010
ISSN	0168-1923
EISSN	1873-2240
起始页码	38
结束页码	46
卷号	150 期号:1
英文摘要	The downward solar or shortwave radiation (SWD) and atmospheric longwave radiation (LWD) play essential roles in controlling alpine environment and ecosystem. Meanwhile, utilization of solar energy has a growing demand by local residents, due to high energy cost in high altitude regions. However, it is always costly for acquiring the radiation data and there are few studies on the radiation modeling in these regions. This paper presented the major characteristics of SWD and LWD over the Tibetan Plateau (TP), which were measured at 11 stations built in the region. The results showed that LWD received by TP is much lower than that of its surrounding areas and their monthly-mean differences can be up to 100 W m(-2). On the contrary, SWD over TP is significantly higher than that over its surrounding areas, due to low extinction rate of airmass, water vapor, and aerosol occurred in TP. The recorded maximum value (similar to 0.9) of daily-mean transmittances much exceeds the upper bound (similar to 0.75) implied in most of the Angstrom-Prescott models; therefore, these models may under-estimate SWD over TP. One set of surface data-based estimate by a non-Angstrom-Prescott model and two sets of satellite estimates were also evaluated against the measurements. It is found that the surface data-based estimate, though not calibrated locally, shows a good agreement with the measurements and has an advantage of producing less root-mean-square errors and higher correlation coefficients than the satellite estimates. Under this condition, it is suggested to combine both the surface data-based estimate together with the satellite estimates in order to improve the accuracy of the SWD and LWD data. (C) 2009 Elsevier B.V. All rights reserved.
关键词	DIRECT SOLAR TRANSMITTANCE BROAD-BAND MODELS IRRADIANCE PREDICTIONS PERFORMANCE ASSESSMENT RIVER-BASIN DATA SETS SURFACE VARIABILITY FLUXES UNCERTAINTIES
英文关键词	Radiation; Tibetan Plateau; High altitude; Hybrid model; Satellite estimate
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000272575900005
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
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/257771
推荐引用方式 GB/T 7714	Yang, Kun,He, Jie,Tang, Wenjun,et al. On downward shortwave and longwave radiations over high altitude regions: Observation and modeling in the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2010,150(1).
APA	Yang, Kun,He, Jie,Tang, Wenjun,Qin, Jun,&Cheng, Charles C. K..(2010).On downward shortwave and longwave radiations over high altitude regions: Observation and modeling in the Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,150(1).
MLA	Yang, Kun,et al."On downward shortwave and longwave radiations over high altitude regions: Observation and modeling in the Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 150.1(2010).