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. 2017 Nov 17;7:15760. doi: 10.1038/s41598-017-15909-1

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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A case study of the effects of water vapour on solar radiation, PBL heights, and PM_2.5 concentrations. (a) shows the measured wind speeds (m s⁻¹) prior to P4, during P4 and after P4. (b) shows the measured PM_2.5 concentrations (μg m⁻³) and RH (%) prior to P4, during P4 and after P4. (c) shows the measured and modeled (“dry” and “wet” cases) surface solar radiation during P4. (d) shows the measured and modeled (“dry” and “wet” cases) PBL heights. The results suggest that water vapour plays an important role in the reduction of solar radiation and PBL heights.