Estimation of daily global solar radiation based on different whitening applications using temperature in Mediterranean type greenhouses

IF 1.6 4区 农林科学 Q2 AGRONOMY Italian Journal of Agrometeorology-Rivista Italiana Di Agrometeorologia Pub Date : 2023-08-03 DOI:10.36253/ijam-2144
Cihan Karaca
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Abstract

The study aimed to estimate the daily global solar radiation (Rs) in Mediterranean-type greenhouses. Five different temperature-based Rs estimation models developed for open-field conditions were calibrated and validated in Mediterranean-type greenhouses in Almeria, Spain and Antalya, Türkiye, between August 26, 2013, and January 1, 2023, and between October 1, 2018, and 1 January 2023, respectively. Whitening applications were categorized according to greenhouse light transmissivity and classified as follows: without whitening or light-whitening, medium-whitening, and severe-whitening. Additionally, the best-performing model were compared with greenhouse plastic light transmissivity method. The estimation performance of the models was evaluated using the statistical indicators of the p-value of the slope, determination coefficient (R2), Nash–Sutcliffe model efficiency coefficient (NSE), root mean square error (RMSE), mean absolute error (MAE), relative error (RE), and Willmott Index (d). Compared with the other models, the Bristow and Campbell model showed a slightly higher performance in all whitening applications. Although the light transmissivity coefficient method performed slightly better than the temperature-based Rs estimation model, there was no statistical difference in the performances of the estimation models. Temperature-based estimation models offer a highly viable alternative for individuals who rely on the light transmittance approach to estimate Rs in greenhouses. This method can prove particularly useful in areas where measuring Rs outside the greenhouse is not possible or where partial time measurements cannot be taken owing to equipment malfunctions. All calibrated models can be used to estimate solar radiation using temperature data from various Mediterranean countries with similar climates and greenhouse cultivation.
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基于地中海式温室不同白化应用温度的全球日太阳辐射估算
该研究旨在估计地中海型温室的每日全球太阳辐射(Rs)。在2013年8月26日至2023年1月1日,以及2018年10月1日至2023年1月1日期间,分别在西班牙阿尔梅利亚和土耳其安塔利亚的地中海型温室中,对五种不同的基于温度的Rs估算模型进行了校准和验证。根据温室透光率对增白应用进行分类,分为不增白或轻度增白、中度增白和重度增白。此外,还比较了温室塑料透光率法的最佳效果。采用斜率的p值、决定系数(R2)、Nash-Sutcliffe模型效率系数(NSE)、均方根误差(RMSE)、平均绝对误差(MAE)、相对误差(RE)和Willmott指数(d)等统计指标评价模型的估计性能。与其他模型相比,Bristow和Campbell模型在所有美白应用中都表现出略高的性能。虽然透光系数法的性能略好于基于温度的Rs估计模型,但两种估计模型的性能无统计学差异。基于温度的估算模型为依赖透光率方法估算温室Rs的个人提供了一个高度可行的替代方案。在无法在温室外测量Rs或由于设备故障而无法进行部分时间测量的地区,这种方法特别有用。所有经过校准的模型都可用于利用气候和温室栽培相似的地中海各国的温度数据来估计太阳辐射。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.10
自引率
8.30%
发文量
6
期刊介绍: Among the areas of specific interest of the journal there are: ecophysiology; phenology; plant growth, quality and quantity of production; plant pathology; entomology; welfare conditions of livestocks; soil physics and hydrology; micrometeorology; modeling, simulation and forecasting; remote sensing; territorial planning; geographical information systems and spatialization techniques; instrumentation to measure physical and biological quantities; data validation techniques, agroclimatology; agriculture scientific dissemination; support services for farmers.
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