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

Nduka, Ifeanyichukwu C.; Tam, Chi-Yung; Guo, Jianping; Yim, Steve Hung Lam

doi:https://doi.org/10.5194/acp-21-13443-2021

Articles | Volume 21, issue 17

https://doi.org/10.5194/acp-21-13443-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-13443-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 17

Research article

|

10 Sep 2021

Research article |

| 10 Sep 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

Ifeanyichukwu C. Nduka, Chi-Yung Tam, Jianping Guo, and Steve Hung Lam Yim

Supplement

https://doi.org/10.5194/acp-21-13443-2021-supplement

Data sets

Climatological Database Climatological Information Services https://www.hko.gov.hk/en/cis/climat.htm

Inquire and Download Air Quality Monitoring Data Environmental Protection Interactive Centre https://cd.epic.epd.gov.hk/EPICDI/air/station/?lang=en

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Short summary

This study analyzed the nature, mechanisms and drivers for hot-and-polluted episodes (HPEs) in the Pearl River Delta, China. A total of eight HPEs were identified and can be grouped into three clusters of HPEs that were respectively driven (1) by weak subsidence and convection induced by approaching tropical cyclones, (2) by calm conditions with low wind speed in the lower atmosphere and (3) by the combination of both aforementioned conditions.