利用陆基气象资料模拟开放水面日净辐射

IF 1 4区 环境科学与生态学 Q4 WATER RESOURCES
L. Myeni, MJ Savage, AD Clulow
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引用次数: 0

摘要

开放水域净辐照度的准确量化对于估算开放水域蒸发量至关重要,这对水资源的有效管理至关重要。另外,当对氮水的质量测量不容易用于感兴趣的水储存时,通常使用氮水的模型估计。利用陆基气象资料,建立了每日Penman, Monteith,平衡温度Hargreaves-Samani (DPMETHS)模型来估算氮水。DPMETHS模式是一个基于电子表格的迭代程序,使用每日陆地气象测量太阳辐照度(Rs land)、最低和最高气温(Tmin和Tmax)、最小和最大相对湿度(RHmin和RHmax)和平均风速(Uland)来计算Rn水。在这项研究中,DPMETHS模型使用来自两个半球5个地点的每日氮水原位测量数据进行评估,这些地点代表了非常不同的气候条件。结果表明,5个站点的模型性能良好,决定系数(r2)值均大于0.85,均方根误差(RMSE)值从东太平洋Stratus Ocean的0.60 MJ∙m-2到南非Midmar Dam的1.89 MJ∙m-2不等。本研究结果表明,DPMETHS模型可以可靠地用于估算各种气候条件下的氮水。DPMETHS模式的性能取决于陆基气象资料对开放水面以上天气条件的代表性。DPMETHS模型是用户友好的,具有最小的计算和数据需求,允许轻松的数据处理和视觉检查。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modelling daily net radiation of open water surfaces using land-based meteorological data
Accurate quantification of net irradiance of open water (Rn water) is of paramount importance for the estimation of open water evaporation, which is critical for the efficient management of water resources. Alternatively, model estimates of Rn water are often used when quality measurements of Rn water are not readily available for the water storage of interest. A Daily Penman, Monteith, Equilibrium Temperature Hargreaves-Samani (DPMETHS) model has been developed for the estimation of Rn water using land-based meteorological data. The DPMETHS model is a spreadsheet-based iterative procedure that computes Rn water using daily land-based meteorological measurements of solar irradiance (Rs land), minimum and maximum air temperatures (Tmin and Tmax), minimum and maximum relative humidity (RHmin and RHmax) and average wind speed (Uland). In this study, the DPMETHS model was evaluated using daily Rn water in-situ measurements acquired from 5 sites in both hemispheres, representing very different climatic conditions. Results showed reasonable model performance at all 5 sites, with the coefficient of determination (r2) values greater than 0.85 and root mean square error (RMSE) values ranging from 0.60 MJ∙m-2 for Stratus Ocean (East Pacific Ocean) to 1.89 MJ∙m-2 for Midmar Dam (South Africa). The results of this study suggested that the DPMETHS model can be reliably used to estimate Rn water for a wide range of climatic conditions. The performance of the DPMETHS model depends on the representativeness of the land-based meteorological data to the weather conditions above the open water surface. The DPMETHS model is user-friendly with minimal computational and data requirements that allows easy data handling and visual inspection.
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来源期刊
Water SA
Water SA 环境科学-水资源
CiteScore
2.80
自引率
6.70%
发文量
46
审稿时长
18-36 weeks
期刊介绍: WaterSA publishes refereed, original work in all branches of water science, technology and engineering. This includes water resources development; the hydrological cycle; surface hydrology; geohydrology and hydrometeorology; limnology; salinisation; treatment and management of municipal and industrial water and wastewater; treatment and disposal of sewage sludge; environmental pollution control; water quality and treatment; aquaculture in terms of its impact on the water resource; agricultural water science; etc. Water SA is the WRC’s accredited scientific journal which contains original research articles and review articles on all aspects of water science, technology, engineering and policy. Water SA has been in publication since 1975 and includes articles from both local and international authors. The journal is issued quarterly (4 editions per year).
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