globalchange  > 气候变化与战略
DOI: 10.1016/j.renene.2019.10.136
论文题名:
Estimation of half-hourly diffuse solar radiation over a mixed plantation in north China
作者: Liu P.; Tong X.; Zhang J.; Meng P.; Li J.; Zhang J.
刊名: Renewable Energy
ISSN: 9601481
出版年: 2020
卷: 149
语种: 英语
英文关键词: Clearness index ; Diffuse fraction ; Diffuse solar radiation model ; Global solar radiation
Scopus关键词: Ecosystems ; Forestry ; Mean square error ; Clearness indices ; Coefficient of determination ; Diffuse fraction ; Diffuse solar radiation models ; Diffuse solar radiations ; Global solar radiation ; Ground based measurement ; Root mean squared errors ; Solar radiation ; carbon flux ; data set ; error analysis ; estimation method ; numerical model ; persistence ; plantation ; solar radiation ; China
英文摘要: Diffuse solar radiation plays important role in carbon exchange between forest ecosystems and the atmosphere. Based on a 2-year (2016–2017) dataset of global and diffuse solar radiation, the annual mean diffuse fraction (the proportion of diffuse solar radiation to global solar radiation, DF) was approximately 0.45 over the plantation canopy. A proposed model (BRL-1), including six predictors (half-hourly clearness index CI, solar elevation angle, apparent solar time, daily CI, a persistence of global solar radiation and relative humidity), was developed using the ground-based measurements data of 2016. The DF values estimated by the proposed model were in good agreement with the measured ones. The values of the coefficient of determination (R2), the root mean squared error (RMSE), the mean bias error (MBE) and the tstat for the proposed model were 0.82, 0.12, 0.002 and 1.16, respectively, lower than the results derived from other models. Therefore, the performance of the proposed model estimating half-hourly DF was better than the other models. Moreover, half-hourly diffuse solar radiation in cloudy skies estimated by the proposed model was more consistent with the measured one than that under clear skies. This study aims at helping us understand the change of diffuse solar radiation with clouds. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158508
Appears in Collections:气候变化与战略

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作者单位: College of Forestry, Beijing Forestry University, Beijing, 100083, China; Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China; Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China

Recommended Citation:
Liu P.,Tong X.,Zhang J.,et al. Estimation of half-hourly diffuse solar radiation over a mixed plantation in north China[J]. Renewable Energy,2020-01-01,149
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