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An improved method for estimating the Ångström turbidity coefficient β in Central China during 1961–2010.

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Title: An improved method for estimating the Ångström turbidity coefficient β in Central China during 1961–2010.
Authors: Wang, Lunche1,2 lunchewang@whu.edu.cn, Salazar, Germán Ariel3, Gong, Wei1,2 liesmars_lidar@whu.edu.cn, Peng, Simao4, Zou, Ling4, Lin, Aiwen4
Source: Energy. Mar2015, Vol. 81, p67-73. 7p.
Subjects: Atmospheric turbidity, Coefficients (Statistics), Radiative transfer, Solar energy, Climate change, Solar radiation
Geographic Terms: Wuhan (China)
Abstract: The accurate determination of the atmospheric turbidity is of great importance for atmospheric environment, solar energy applications and climate change studies. Daily values of horizontal direct, diffuse and global solar radiation at Wuhan, Central China during 1961–2010 are used for estimating the monthly mean Ångström turbidity coefficient β . The YHM and YHM2 (Yang hybrid models) are first used to estimate the direct and diffuse components considering the transmittances of ozone, water vapor, gas mixture, aerosol and Rayleigh effect in the radiative transfer processes. An IMW (improved model for Wuhan) is also proposed by combining the format of YHM model with the corrected spectral terms of YHM2 model. Then, the β value can be estimated by varying the estimated direct irradiation until it matches the observation. The model performance is analyzed and compared and further validated by measured values using Sun photometer CE318. It is shown that the IMW model presents more accurate estimates than YHM and YHM2 ones; it is therefore a useful tool for studying the variability and evolution of atmospheric turbidity in other places around the world. [ABSTRACT FROM AUTHOR]
Copyright of Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 101252485
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: An improved method for estimating the Ångström turbidity coefficient β in Central China during 1961–2010.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Lunche%22">Wang, Lunche</searchLink><relatesTo>1,2</relatesTo><i> lunchewang@whu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Salazar%2C+Germán+Ariel%22">Salazar, Germán Ariel</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Gong%2C+Wei%22">Gong, Wei</searchLink><relatesTo>1,2</relatesTo><i> liesmars_lidar@whu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Peng%2C+Simao%22">Peng, Simao</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Zou%2C+Ling%22">Zou, Ling</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Lin%2C+Aiwen%22">Lin, Aiwen</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Energy%22">Energy</searchLink>. Mar2015, Vol. 81, p67-73. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Atmospheric+turbidity%22">Atmospheric turbidity</searchLink><br /><searchLink fieldCode="DE" term="%22Coefficients+%28Statistics%29%22">Coefficients (Statistics)</searchLink><br /><searchLink fieldCode="DE" term="%22Radiative+transfer%22">Radiative transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+energy%22">Solar energy</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+radiation%22">Solar radiation</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Wuhan+%28China%29%22">Wuhan (China)</searchLink>
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  Data: The accurate determination of the atmospheric turbidity is of great importance for atmospheric environment, solar energy applications and climate change studies. Daily values of horizontal direct, diffuse and global solar radiation at Wuhan, Central China during 1961–2010 are used for estimating the monthly mean Ångström turbidity coefficient β . The YHM and YHM2 (Yang hybrid models) are first used to estimate the direct and diffuse components considering the transmittances of ozone, water vapor, gas mixture, aerosol and Rayleigh effect in the radiative transfer processes. An IMW (improved model for Wuhan) is also proposed by combining the format of YHM model with the corrected spectral terms of YHM2 model. Then, the β value can be estimated by varying the estimated direct irradiation until it matches the observation. The model performance is analyzed and compared and further validated by measured values using Sun photometer CE318. It is shown that the IMW model presents more accurate estimates than YHM and YHM2 ones; it is therefore a useful tool for studying the variability and evolution of atmospheric turbidity in other places around the world. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.energy.2014.11.024
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 67
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      – SubjectFull: Atmospheric turbidity
        Type: general
      – SubjectFull: Coefficients (Statistics)
        Type: general
      – SubjectFull: Radiative transfer
        Type: general
      – SubjectFull: Solar energy
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      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Solar radiation
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      – SubjectFull: Wuhan (China)
        Type: general
    Titles:
      – TitleFull: An improved method for estimating the Ångström turbidity coefficient β in Central China during 1961–2010.
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            NameFull: Wang, Lunche
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            NameFull: Salazar, Germán Ariel
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            NameFull: Gong, Wei
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            NameFull: Peng, Simao
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            NameFull: Zou, Ling
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              Text: Mar2015
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              Y: 2015
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              Value: 81
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