Characteristics of solar radiation at Xiaotang, in the northern marginal zone of the Taklimakan Desert

The characteristics of solar radiation and the influence of sand and dust on solar radiation in the northern margin of Taklimakan Desert were analyzed using radiation observation data from 2018. The results showed that the annual total radiation, direct radiation, and scattered radiation at Xiaotang...

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Autores principales: Lili Jin, Sasa Zhou, Qing He, Alim Abbas
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Lenguaje:EN
Publicado: PeerJ Inc. 2021
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Acceso en línea:https://doaj.org/article/13aac8e2fc4740d49dc7bd2df0b4eeab
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spelling oai:doaj.org-article:13aac8e2fc4740d49dc7bd2df0b4eeab2021-11-14T15:05:06ZCharacteristics of solar radiation at Xiaotang, in the northern marginal zone of the Taklimakan Desert10.7717/peerj.123732167-8359https://doaj.org/article/13aac8e2fc4740d49dc7bd2df0b4eeab2021-11-01T00:00:00Zhttps://peerj.com/articles/12373.pdfhttps://peerj.com/articles/12373/https://doaj.org/toc/2167-8359The characteristics of solar radiation and the influence of sand and dust on solar radiation in the northern margin of Taklimakan Desert were analyzed using radiation observation data from 2018. The results showed that the annual total radiation, direct radiation, and scattered radiation at Xiaotang were 5,781.8, 2,337.9, and 3,323.8 MJ m−2, respectively. The maximum monthly total radiation, direct radiation, and scattered radiation were observed in July (679.8 MJ m−2), August (317.3 MJ m−2), and May (455.7 MJ m−2), respectively. The aerosol optical depth corresponded well with the scattered radiation, and the maximum value was in May. Further analysis showed a significant correlation between the total radiation and solar height angle under different weather conditions. Under the same solar height angle, total radiation was higher during clear days but lower on sandstorm days. Calculation of atmospheric transmittance showed that the average atmospheric transmittance on a clear day was 0.67; on sand-and-dust days, it was 0.46. When the atmospheric transmittance was 0.5, the increase in scattering radiation by aerosol in the air began to decrease. Probability analysis of radiation indicated the following probabilities of total radiation <500 W m−2 occurring on clear, floating-dust, blowing-sand, and sandstorm days: 67.1%, 76.3%, 76.1%, and 91.8%, respectively. Dust had the greatest influence on direct radiation; the probabilities of direct radiation <200 W m−2occurring on clear, floating-dust, blowing-sand, and sandstorm days were 44.5%, 93.5%, 91.3%, and 100%, respectively, whereas those of scattered radiation <600 W m−2were 100%, 99.1%, 98.1%, and 100%, respectively. Therefore, the presence of dust in the air will reduce scattered radiation.Lili JinSasa ZhouQing HeAlim AbbasPeerJ Inc.articleTotal radiationDirect radiationScattered radiationTaklimakan DesertMedicineRENPeerJ, Vol 9, p e12373 (2021)
institution DOAJ
collection DOAJ
language EN
topic Total radiation
Direct radiation
Scattered radiation
Taklimakan Desert
Medicine
R
spellingShingle Total radiation
Direct radiation
Scattered radiation
Taklimakan Desert
Medicine
R
Lili Jin
Sasa Zhou
Qing He
Alim Abbas
Characteristics of solar radiation at Xiaotang, in the northern marginal zone of the Taklimakan Desert
description The characteristics of solar radiation and the influence of sand and dust on solar radiation in the northern margin of Taklimakan Desert were analyzed using radiation observation data from 2018. The results showed that the annual total radiation, direct radiation, and scattered radiation at Xiaotang were 5,781.8, 2,337.9, and 3,323.8 MJ m−2, respectively. The maximum monthly total radiation, direct radiation, and scattered radiation were observed in July (679.8 MJ m−2), August (317.3 MJ m−2), and May (455.7 MJ m−2), respectively. The aerosol optical depth corresponded well with the scattered radiation, and the maximum value was in May. Further analysis showed a significant correlation between the total radiation and solar height angle under different weather conditions. Under the same solar height angle, total radiation was higher during clear days but lower on sandstorm days. Calculation of atmospheric transmittance showed that the average atmospheric transmittance on a clear day was 0.67; on sand-and-dust days, it was 0.46. When the atmospheric transmittance was 0.5, the increase in scattering radiation by aerosol in the air began to decrease. Probability analysis of radiation indicated the following probabilities of total radiation <500 W m−2 occurring on clear, floating-dust, blowing-sand, and sandstorm days: 67.1%, 76.3%, 76.1%, and 91.8%, respectively. Dust had the greatest influence on direct radiation; the probabilities of direct radiation <200 W m−2occurring on clear, floating-dust, blowing-sand, and sandstorm days were 44.5%, 93.5%, 91.3%, and 100%, respectively, whereas those of scattered radiation <600 W m−2were 100%, 99.1%, 98.1%, and 100%, respectively. Therefore, the presence of dust in the air will reduce scattered radiation.
format article
author Lili Jin
Sasa Zhou
Qing He
Alim Abbas
author_facet Lili Jin
Sasa Zhou
Qing He
Alim Abbas
author_sort Lili Jin
title Characteristics of solar radiation at Xiaotang, in the northern marginal zone of the Taklimakan Desert
title_short Characteristics of solar radiation at Xiaotang, in the northern marginal zone of the Taklimakan Desert
title_full Characteristics of solar radiation at Xiaotang, in the northern marginal zone of the Taklimakan Desert
title_fullStr Characteristics of solar radiation at Xiaotang, in the northern marginal zone of the Taklimakan Desert
title_full_unstemmed Characteristics of solar radiation at Xiaotang, in the northern marginal zone of the Taklimakan Desert
title_sort characteristics of solar radiation at xiaotang, in the northern marginal zone of the taklimakan desert
publisher PeerJ Inc.
publishDate 2021
url https://doaj.org/article/13aac8e2fc4740d49dc7bd2df0b4eeab
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AT qinghe characteristicsofsolarradiationatxiaotanginthenorthernmarginalzoneofthetaklimakandesert
AT alimabbas characteristicsofsolarradiationatxiaotanginthenorthernmarginalzoneofthetaklimakandesert
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