Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/153538
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dc.contributor.authorNduka, IIfeanyichukwu C.en_US
dc.contributor.authorTam, Chi-Yungen_US
dc.contributor.authorGuo, Jianpingen_US
dc.contributor.authorYim, Steve Hung Lamen_US
dc.date.accessioned2021-12-07T07:58:51Z-
dc.date.available2021-12-07T07:58:51Z-
dc.date.issued2021-
dc.identifier.citationNduka, I. C., Tam, C., Guo, J. & Yim, S. H. L. (2021). Characteristics of surface energy balance and atmospheric circulation during hot-and-polluted episodes and their synergistic relationships with urban heat islands over the Pearl River Delta region. Atmospheric Chemistry and Physics, 21(17), 13443-13454. https://dx.doi.org/10.5194/acp-21-13443-2021en_US
dc.identifier.issn1680-7316en_US
dc.identifier.urihttps://hdl.handle.net/10356/153538-
dc.description.abstractThis study analyzed the nature, mechanisms and drivers for hot-And-polluted episodes (HPEs) in the Pearl River Delta, China. Numerical model simulations were conducted for the summer and autumn of 2009-2011. A total of eight HPEs were identified, mainly occurring in August and September. K-means clustering was applied to group the HPEs into three clusters based on their characteristics and mechanisms. We found three HPEs were driven by weak subsidence and convection induced by approaching tropical cyclones (TC-HPE) and two HPEs were controlled by calm (stagnant) conditions (ST-HPE) with low wind speed in the lower atmosphere, whereas the remaining three HPEs were driven by the combination (hybrid) of both aforementioned systems (HY-HPE). A positive synergistic effect between the HPE and urban heat island (UHI; g 1/4g 1.1g g C increase) was observed in TC-HPE and ST-HPE, whereas no discernible synergistic effect was found in HY-HPE. Total aerosol radiative forcing (TARF) caused a reduction in temperature (0.5-1.0g g C) in TC-HPE and ST-HPE but an increase (0.5g g C) in HY-HPE.en_US
dc.language.isoenen_US
dc.relation.ispartofAtmospheric Chemistry and Physicsen_US
dc.rights© Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleCharacteristics of surface energy balance and atmospheric circulation during hot-and-polluted episodes and their synergistic relationships with urban heat islands over the Pearl River Delta regionen_US
dc.typeJournal Articleen
dc.contributor.schoolAsian School of the Environmenten_US
dc.identifier.doi10.5194/acp-21-13443-2021-
dc.description.versionPublished versionen_US
dc.identifier.scopus2-s2.0-85114821904-
dc.identifier.issue17en_US
dc.identifier.volume21en_US
dc.identifier.spage13443en_US
dc.identifier.epage13454en_US
dc.subject.keywordsAtmospheric Circulationen_US
dc.subject.keywordsAtmospheric Pollutionen_US
dc.description.acknowledgementThis research has been supported by the Early Career Scheme of Research Grants Council of Hong Kong (grant no. CUHK24301415).en_US
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