Global Solar Radiation Transfer and Its Loss in the Atmosphere

Based on the analysis of solar radiation and meteorological parameters measured at a subtropical forest in China during 2013–2016, a new empirical model of global solar irradiance has been developed. It can calculate global solar irradiance at the ground and at the top of the atmosphere (TOA); both...

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Main Authors: Jianhui Bai, Xuemei Zong
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/11/6/2651
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author Jianhui Bai
Xuemei Zong
author_facet Jianhui Bai
Xuemei Zong
author_sort Jianhui Bai
collection DOAJ
description Based on the analysis of solar radiation and meteorological parameters measured at a subtropical forest in China during 2013–2016, a new empirical model of global solar irradiance has been developed. It can calculate global solar irradiance at the ground and at the top of the atmosphere (TOA); both are in agreement with the observations. This model is used to calculate the extinction of global solar irradiance in the atmosphere and the contributions from absorbing and scattering substances. The loss of global solar irradiance is dominated by absorbing and absorbing substances. The results show clear seasonal and interannual variations during the observation period. Sensitivity analysis indicates that global solar irradiance is more sensitive to changes in scattering, quantified by the S/G factor (S and G are diffuse and global solar radiation, respectively), than to changes in absorption. The relationships between the extinction factor (AF) of G and S/G and between the AF and the aerosol optical depth (AOD) are determined and used to estimate S/G and the AOD from the measured AF. This empirical model is applied to calculate the albedos at the TOA and the ground. This empirical model is useful to study global solar radiation and the energy–atmosphere interactions.
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spelling doaj.art-d8238c6f090b41caaa6bd5ff4f3ae1dc2023-11-21T10:44:18ZengMDPI AGApplied Sciences2076-34172021-03-01116265110.3390/app11062651Global Solar Radiation Transfer and Its Loss in the AtmosphereJianhui Bai0Xuemei Zong1LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaLAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaBased on the analysis of solar radiation and meteorological parameters measured at a subtropical forest in China during 2013–2016, a new empirical model of global solar irradiance has been developed. It can calculate global solar irradiance at the ground and at the top of the atmosphere (TOA); both are in agreement with the observations. This model is used to calculate the extinction of global solar irradiance in the atmosphere and the contributions from absorbing and scattering substances. The loss of global solar irradiance is dominated by absorbing and absorbing substances. The results show clear seasonal and interannual variations during the observation period. Sensitivity analysis indicates that global solar irradiance is more sensitive to changes in scattering, quantified by the S/G factor (S and G are diffuse and global solar radiation, respectively), than to changes in absorption. The relationships between the extinction factor (AF) of G and S/G and between the AF and the aerosol optical depth (AOD) are determined and used to estimate S/G and the AOD from the measured AF. This empirical model is applied to calculate the albedos at the TOA and the ground. This empirical model is useful to study global solar radiation and the energy–atmosphere interactions.https://www.mdpi.com/2076-3417/11/6/2651global solar radiationabsorbing and scattering factorsOH radicalsaerosol optical depthclimate
spellingShingle Jianhui Bai
Xuemei Zong
Global Solar Radiation Transfer and Its Loss in the Atmosphere
Applied Sciences
global solar radiation
absorbing and scattering factors
OH radicals
aerosol optical depth
climate
title Global Solar Radiation Transfer and Its Loss in the Atmosphere
title_full Global Solar Radiation Transfer and Its Loss in the Atmosphere
title_fullStr Global Solar Radiation Transfer and Its Loss in the Atmosphere
title_full_unstemmed Global Solar Radiation Transfer and Its Loss in the Atmosphere
title_short Global Solar Radiation Transfer and Its Loss in the Atmosphere
title_sort global solar radiation transfer and its loss in the atmosphere
topic global solar radiation
absorbing and scattering factors
OH radicals
aerosol optical depth
climate
url https://www.mdpi.com/2076-3417/11/6/2651
work_keys_str_mv AT jianhuibai globalsolarradiationtransferanditslossintheatmosphere
AT xuemeizong globalsolarradiationtransferanditslossintheatmosphere