气候变化领域集成服务门户(CCPortal): Estimation of the distribution of the total net radiative flux from satellite and automatic weather station data in the Upper Blue Nile basin, Ethiopia

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DOI	10.1007/s00704-020-03397-9
	Estimation of the distribution of the total net radiative flux from satellite and automatic weather station data in the Upper Blue Nile basin, Ethiopia
	Tegegne, Eyale Bayable; Ma, Yaoming; Chen, Xuelong; Ma, Weiqiang; Wang, Bingbing; Ding, Zhangwei; Zhu, Zhikun
通讯作者	Ma, YM ; Chen, XL (通讯作者)
发表日期	2021
ISSN	0177-798X
EISSN	1434-4483
起始页码	587
结束页码	602
卷号	143 期号:1-2
英文摘要	Net radiation is an important factor in studies of land-atmosphere processes, water resource management, and global climate change. This is particularly true for the Upper Blue Nile (UBN) basin, where significant parts of the basin are dry and evapotranspiration (ET) is a major mechanism for water loss. However, net radiation has not yet been appropriately parameterized in the basin. In this study, we estimated the instantaneous distribution of the net radiation flux in the basin using data from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor onboard the Terra satellite and Automatic Weather Station (AWS) data. Downward shortwave radiation and air temperature usually vary with topography, so we applied residual kriging spatial interpolation techniques to convert AWS data for point locations into gridded surface data. Simulated net radiation outputs were validated through comparison with independent field measurements. Validation results show that our method successfully reproduced the downward shortwave, upward shortwave, and net radiation fluxes. Using AWS data and residual kriging spatial interpolation techniques makes our results robust and comparable to previous works that used satellite data at a finer spatial resolution than MODIS. The estimated net shortwave, longwave, and total radiation fluxes were in close agreement with ground truth measurements, with mean bias (MB) values of - 14.84, 5.7, and 20.53 W m(-2) and root mean square error (RMSE) values 83.43, 32.54, and 78.07 W m(-2), respectively. The method presented here has potential applications in research focused on energy balance, ET estimation, and weather prediction for regions with similar physiographic features to those of the Nile basin.
关键词	SURFACE SOLAR-RADIATION LONG-WAVE-RADIATION BROAD-BAND MODELS AIR-TEMPERATURE COMPLEX TERRAIN MODIS DATA IRRADIANCE PREDICTIONS THEMATIC MAPPER PART I CLEAR
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000582809200002
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
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/260204
推荐引用方式 GB/T 7714	Tegegne, Eyale Bayable,Ma, Yaoming,Chen, Xuelong,et al. Estimation of the distribution of the total net radiative flux from satellite and automatic weather station data in the Upper Blue Nile basin, Ethiopia[J]. 中国科学院青藏高原研究所,2021,143(1-2).
APA	Tegegne, Eyale Bayable.,Ma, Yaoming.,Chen, Xuelong.,Ma, Weiqiang.,Wang, Bingbing.,...&Zhu, Zhikun.(2021).Estimation of the distribution of the total net radiative flux from satellite and automatic weather station data in the Upper Blue Nile basin, Ethiopia.THEORETICAL AND APPLIED CLIMATOLOGY,143(1-2).
MLA	Tegegne, Eyale Bayable,et al."Estimation of the distribution of the total net radiative flux from satellite and automatic weather station data in the Upper Blue Nile basin, Ethiopia".THEORETICAL AND APPLIED CLIMATOLOGY 143.1-2(2021).