IDEAS home Printed from https://ideas.repec.org/a/gam/jlands/v11y2022i12p2235-d997014.html
   My bibliography  Save this article

A Comparative Analysis of Characteristics and Synoptic Backgrounds of Extreme Heat Events over Two Urban Agglomerations in Southeast China

Author

Listed:
  • Xiaoyan Sun

    (Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of Meteorological Disasters of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
    State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China)

  • Xiaoyu Gao

    (State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China)

  • Yali Luo

    (Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of Meteorological Disasters of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
    State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China)

  • Wai-Kin Wong

    (Hong Kong Observatory, Hong Kong 999077, China)

  • Haiming Xu

    (Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of Meteorological Disasters of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China)

Abstract

Based on high-resolution surface observation and reanalysis data, this paper analyzes the extreme heat events (EHEs) over two densely populated urban agglomerations in southeast China, namely the Yangtze River Delta (YRD) and the Pearl River Delta (PRD), including the spatial–temporal distribution of heatwaves and warm nights and the synoptic backgrounds for regional heatwaves. The results show that the occurrence frequency of EHEs is modulated significantly by local underlying features (i.e., land–sea contrast, terrain), and the strong nocturnal urban heat island effects make warm nights much more likely to occur in cities than rural areas during heatwaves. About 80% of the YRD regional heatwaves occur from 15 July to 15 August, while a lower fraction (53%) of the PRD heatwaves is found during this mid-summer period, which partially explains the warm-season average intensity of the former being 2–3 times the latter. A persistent, profound subtropical high is the dominant synoptic system responsible for the mid-summer YRD heatwaves, which forces significant descending motion leading to long-duration sunny weather. The mid-summer PRD heatwaves involve both high-pressure systems and tropical cyclones (TCs). A TC is present to the east of the PRD region on most (about 72%) PRD heatwave days. The organized northerly winds in the planetary boundary layer in the outer circulation of the TC transport the inland warm air, which is heated by the foehn effect at the lee side of the Nanling Mountains and possibly also the surface sensible heat flux, towards the PRD region, leading to the occurrence of the extremely high temperatures.

Suggested Citation

  • Xiaoyan Sun & Xiaoyu Gao & Yali Luo & Wai-Kin Wong & Haiming Xu, 2022. "A Comparative Analysis of Characteristics and Synoptic Backgrounds of Extreme Heat Events over Two Urban Agglomerations in Southeast China," Land, MDPI, vol. 11(12), pages 1-18, December.
    • Handle: RePEc:gam:jlands:v:11:y:2022:i:12:p:2235-:d:997014
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2073-445X/11/12/2235/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2073-445X/11/12/2235/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Nikolaos Christidis & Gareth S. Jones & Peter A. Stott, 2015. "Dramatically increasing chance of extremely hot summers since the 2003 European heatwave," Nature Climate Change, Nature, vol. 5(1), pages 46-50, January.
    2. T. Matthews & R. L. Wilby & C. Murphy, 2019. "An emerging tropical cyclone–deadly heat compound hazard," Nature Climate Change, Nature, vol. 9(8), pages 602-606, August.
    3. Xing Yuan & Linying Wang & Peili Wu & Peng Ji & Justin Sheffield & Miao Zhang, 2019. "Anthropogenic shift towards higher risk of flash drought over China," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Jinhua Wen & Yian Hua & Chenkai Cai & Shiwu Wang & Helong Wang & Xinyan Zhou & Jian Huang & Jianqun Wang, 2023. "Probabilistic Forecast and Risk Assessment of Flash Droughts Based on Numeric Weather Forecast: A Case Study in Zhejiang, China," Sustainability, MDPI, vol. 15(4), pages 1-20, February.
    2. Yajing Zhang & Ruifang Hao & Yu Qin, 2024. "Temporal and Spatial Variation of Agricultural and Pastoral Production in the Eastern Section of the Agro-Pastoral Transitional Zone in Northern China," Agriculture, MDPI, vol. 14(6), pages 1-14, May.
    3. Zhang, Yu & Liu, Xiaohong & Jiao, Wenzhe & Zhao, Liangju & Zeng, Xiaomin & Xing, Xiaoyu & Zhang, Lingnan & Hong, Yixue & Lu, Qiangqiang, 2022. "A new multi-variable integrated framework for identifying flash drought in the Loess Plateau and Qinling Mountains regions of China," Agricultural Water Management, Elsevier, vol. 265(C).
    4. Guoyong Leng & Qiuhong Tang & Shengzhi Huang & Xuejun Zhang, 2016. "Extreme hot summers in China in the CMIP5 climate models," Climatic Change, Springer, vol. 135(3), pages 669-681, April.
    5. Ali Ahmadalipour & Hamid Moradkhani & Mukesh Kumar, 2019. "Mortality risk from heat stress expected to hit poorest nations the hardest," Climatic Change, Springer, vol. 152(3), pages 569-579, March.
    6. Kairui Feng & Min Ouyang & Ning Lin, 2022. "Tropical cyclone-blackout-heatwave compound hazard resilience in a changing climate," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    7. Leibin Wang & Robert V. Rohli & Qigen Lin & Shaofei Jin & Xiaodong Yan, 2022. "Impact of Extreme Heatwaves on Population Exposure in China Due to Additional Warming," Sustainability, MDPI, vol. 14(18), pages 1-13, September.
    8. Kuczyński, Tadeusz & Staszczuk, Anna, 2023. "Experimental study of the thermal behavior of PCM and heavy building envelope structures during summer in a temperate climate," Energy, Elsevier, vol. 279(C).
    9. Julia S. Stoyanova & Christo G. Georgiev & Plamen N. Neytchev, 2023. "Drought Monitoring in Terms of Evapotranspiration Based on Satellite Data from Meteosat in Areas of Strong Land–Atmosphere Coupling," Land, MDPI, vol. 12(1), pages 1-21, January.
    10. Ben Clarke & Friederike Otto & Richard Jones, 2023. "When don’t we need a new extreme event attribution study?," Climatic Change, Springer, vol. 176(5), pages 1-19, May.
    11. Guga, Suri & Ma, Yining & Riao, Dao & Zhi, Feng & Xu, Jie & Zhang, Jiquan, 2023. "Drought monitoring of sugarcane and dynamic variation characteristics under global warming: A case study of Guangxi, China," Agricultural Water Management, Elsevier, vol. 275(C).
    12. Mo Wang & Zijing Chen & Dongqing Zhang & Ming Liu & Haojun Yuan & Biyi Chen & Qiuyi Rao & Shiqi Zhou & Yuankai Wang & Jianjun Li & Chengliang Fan & Soon Keat Tan, 2024. "Changes in Concurrent Meteorological Extremes of Rainfall and Heat under Divergent Climatic Trajectories in the Guangdong–Hong Kong–Macao Greater Bay Area," Sustainability, MDPI, vol. 16(5), pages 1-17, March.
    13. Vittal Hari & Subimal Ghosh & Wei Zhang & Rohini Kumar, 2022. "Strong influence of north Pacific Ocean variability on Indian summer heatwaves," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    14. Elizabeth G. Hanna & Peter W. Tait, 2015. "Limitations to Thermoregulation and Acclimatization Challenge Human Adaptation to Global Warming," IJERPH, MDPI, vol. 12(7), pages 1-41, July.
    15. Emanuele Bevacqua & Laura Suarez-Gutierrez & Aglaé Jézéquel & Flavio Lehner & Mathieu Vrac & Pascal Yiou & Jakob Zscheischler, 2023. "Advancing research on compound weather and climate events via large ensemble model simulations," Nature Communications, Nature, vol. 14(1), pages 1-16, December.
    16. Luis M. Abadie & Marek Smid, 2020. "Climate change and heatwaves in the main coastal cities of the Basque Country," EKONOMIAZ. Revista vasca de Economía, Gobierno Vasco / Eusko Jaurlaritza / Basque Government, vol. 97(01), pages 165-189.
    17. Giovanni Forzieri & Luc Feyen & Simone Russo & Michalis Vousdoukas & Lorenzo Alfieri & Stephen Outten & Mirco Migliavacca & Alessandra Bianchi & Rodrigo Rojas & Alba Cid, 2016. "Multi-hazard assessment in Europe under climate change," Climatic Change, Springer, vol. 137(1), pages 105-119, July.
    18. Kong, Xiangfei & Fu, Ying & Yuan, Jianjuan, 2023. "Novel flexible phase change materials with high emissivity, low thermal conductivity and mechanically robust for thermal management in outdoor environment," Applied Energy, Elsevier, vol. 348(C).
    19. Efi Rousi & Kai Kornhuber & Goratz Beobide-Arsuaga & Fei Luo & Dim Coumou, 2022. "Accelerated western European heatwave trends linked to more-persistent double jets over Eurasia," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    20. Jordan I. Christian & Jeffrey B. Basara & Eric D. Hunt & Jason A. Otkin & Jason C. Furtado & Vimal Mishra & Xiangming Xiao & Robb M. Randall, 2021. "Global distribution, trends, and drivers of flash drought occurrence," Nature Communications, Nature, vol. 12(1), pages 1-11, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jlands:v:11:y:2022:i:12:p:2235-:d:997014. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.