A New Method to Identify the Maximum Time Interval between Individual Events in Compound Rainstorm and Heatwave Events

Abstract

Growing evidence indicates that extreme heat and rain may occur in succession within short time periods and cause greater impacts than individual events separated in time and space. Therefore, many studies have examined the impacts of compound hazard events on the social-ecological system at various scales. The definition of compound events is fundamental for such research. However, there are no existing studies that support the determination of time interval between individual events of a compound rainstorm and heatwave (CRH) event, which consists of two or more potentially qualifying component heatwave and rainstorm events. To address the deficiency in defining what individual events can constitute a CRH event, this study proposed a novel method to determine the maximum time interval for CRH events through the change in CRH event frequency with increasing time interval between individual events, using southern China as a case study. The results show that the threshold identified by the proposed method is reasonable. For more than 90% of the meteorological stations, the frequency of CRH events has reached a maximum when the time interval is less than or equal to the threshold. This study can aid in time interval selection, which is an important step for subsequent study of CRH events.

Keywords

Compound extreme weather event / Rainstorm and heatwave / Southern China / Threshold / Time interval

References

[] BBC News. 2022. Europe storms: Children among dead in France, Austria and Italy. https://www.bbc.com/news/world-europe-62598573. Accessed 25 Feb 2024.

[] Bevacqua, E., M.I. Vousdoukas, G. Zappa, K. Hodges, T.G. Shepherd, D. Maraun, L. Mentaschi, and L. Feyen. 2020. More meteorological events that drive compound coastal flooding are projected under climate change. Communications Earth & Environment 1: Article 47.

[] Bevacqua E, Zappa G, Lehner F, Zscheischler J. Precipitation trends determine future occurrences of compound hot-dry events. Nature Climate Change, 2022, 12(4): 350-355,

[] Chen, Y., Z. Liao, Y. Shi, P. Li, and P. Zhai. 2022. Greater flash flood risks from hourly precipitation extremes preconditioned by heatwaves in the Yangtze River Valley. Geophysical Research Letters 49: Article e2022GL099485.

[] Chen, Y., Z. Liao, Y. Shi, Y. Tian, and P. Zhai. 2021. Detectable increases in sequential flood‐heatwave events across China during 1961–2018. Geophysical Research Letters 48,: Article e2021GL092549.

[] Edmonds, D.A., R.L. Caldwell, E.S. Brondizio, and S.M.O. Siani. 2020. Coastal flooding will disproportionately impact people on river deltas. Nature Communications 11: Article 4741.

[] Fang, B., and M. Lu. 2023. Asia faces a growing threat from intraseasonal compound weather whiplash. Earth’s Future 11: Article e2022EF003111.

[] Feng, K., M. Ouyang, and N. Lin. 2022. Tropical cyclone-blackout-heatwave compound hazard resilience in a changing climate. Nature Communications 13: Article 4421.

[] Field C, Barros V, Stocker T, Qin D, Dokken DJ, Ebi KL, Mastrandrea MD, Mach KJ, et al.. . Managing the risks of extreme events and disasters to advance climate change adaptation: Special report of the Intergovernmental Panel on Climate Change, 2012 Cambridge, UK Cambridge University Press

[] Fowler HJ, Lenderink G, Prein AF, Westra S, Allan RP, Ban N, Barbero R, Berg P, et al.. Anthropogenic intensification of short-duration rainfall extremes. Nature Reviews Earth & Environment, 2021, 2: 107-122,

[] Ghanbari, M., M. Arabi, S.C. Kao, J. Obeysekera, and W. Sweet. 2021. Climate change and changes in compound coastal-riverine flooding hazard along the US coasts. Earth’s Future 9: Article e2021EF002055.

[] Gu, L., J. Chen, J. Yin, L.J. Slater, H.-M. Wang, Q. Guo, M. Feng, H. Qin, et al. 2022. Global increases in compound flood‐hot extreme hazards under climate warming. Geophysical Research Letters 49: Article e2022GL097726.

[] IPCC (Intergovernmental Panel on Climate Change). . Climate change 2021: The physical science basis, 2021 Cambridge, UK Cambridge University Press

[] Kim, H., G.D. Madakumbura, S.Y. Wang, H. Shiogama, E. Fischer, N. Utsumi, and J. Yoon. 2019. Flood and heatwave in Japan 2018 and future increase of consecutive compound risk in a warmer world. In Proceedings of the American Geophysical Union Fall Meeting 2019, 9–13 December 2019, San Francisco, USA.

[] Kong, Q., S.B. Guerreiro, S. Blenkinsop, X.-F. Li, and H.J. Fowler. 2020. Increases in summertime concurrent drought and heatwave in Eastern China. Weather and Climate Extremes 28: Article 100242.

[] Leonard M, Westra S, Phatak A, Lambert M, van den Hurk B, McInnes K, Risbey J, Schuster S, et al.. A compound event framework for understanding extreme impacts. Climate Change, 2014, 5(1): 113-128

[] Li, C., R. Min, X. Gu, A. Gulakhmadov, S. Luo, R. Liu, J. Slater, and F. Xie. 2022. Substantial increase in heavy precipitation events preceded by moist heatwaves over China during 1961–2019. Frontiers in Environmental Science 10: Article 951392.

[] Liao, Z., Y. Chen, W. Li, and P. Zhai. 2021. Growing threats from unprecedented sequential flood‐hot extremes across China. Geophysical Research Letters 48(18): Article e2021GL094505.

[] Matthews T, Wilby RL, Murphy C. An emerging tropical cyclone-deadly heat compound hazard. Nature Climate Change, 2019, 9: 602-606,

[] Mukherjee, S., and A.K. Mishra. 2021. Increase in compound drought and heatwaves in a warming world. Geophysical Research Letters 48: Article e2020GL090617.

[] Mukherjee, S., A.K. Mishra, M. Ashfaq, and S.-C. Kao. 2022. Relative effect of anthropogenic warming and natural climate variability to changes in compound drought and heatwaves. Journal of Hydrology 605: Article 127396.

[] Peter Sheng, Y., V.A. Paramygin, K. Yang, and A.A. Rivera-Nieves. 2022. A sensitivity study of rising compound coastal inundation over large flood plains in a changing climate. Scientific Reports 12: Article 3403.

[] Qiu, J., B. Liu, F. Yang, X. Wang, and X. He. 2022. Quantitative stress test of compound coastal‐fluvial floods in China’s Pearl River Delta. Earth’s Future 10: Artcile e2021EF002638.

[] Raghavendra A, Dai AG, Milrad SM, Cloutier-Bisbee SR. Floridian heatwaves and extreme precipitation: Future climate projections. Climate Dynamics, 2019, 52: 495-508,

[] Raymond C, Horton RM, Zscheischler J, Martius O, AghaKouchak A, Balch J, Bowen SG, Camargo SJ, et al.. Understanding and managing connected extreme events. Nature Climate Change, 2020, 10(7): 611-621,

[] Ren J, Huang G, Zhou X, Li Y. Downscaled compound heatwave and heavy-precipitation analyses for Guangdong, China in the twenty-first century. Climate Dynamics, 2023, 61: 2885-2905,

[] Sauter, C., H.J. Fowler, S. Westra, H. Ali, N. Peleg, and C.J. White. 2023. Compound extreme hourly rainfall preconditioned by heatwaves most likely in the mid-latitudes. Weather and Climate Extremes 40: Article 100563.

[] Sauter C, White CJ, Fowler HJ, Westra S. Temporally compounding heatwave-heavy rainfall events in Australia. International Journal of Climatology, 2023, 43(2): 1050-1061,

[] Wu, J., Y. Chen, Z. Liao, X. Gao, P. Zhai, and Y. Hu. 2022. Increasing risk from landfalling tropical cyclone-heatwave compound events to coastal and inland China. Environmental Research Letters 17(10). https://doi.org/10.1088/1748-9326/ac9747.

[] You, J.W., and S. Wang. 2021. Higher probability of occurrence of hotter and shorter heat waves followed by heavy rainfall. Geophysical Research Letters 48: Article e2021GL094831.

[] Zhang, W., and G. Villarini. 2020. Deadly compound heat stress‐flooding hazard across the Central United States. Geophysical Research Letters 47: Article e2020GL089185.

[] Zscheischler J, Michalak AM, Schwalm C, Mahecha MD, Huntzinger DN, Reichstein M, Berthier G, Ciais P, et al.. Impact of large-scale climate extremes on biospheric carbon fluxes: An intercomparison based on MsTMIP data. Global Biogeochemical Cycles, 2014, 28: 585-600,

[] Zscheischler J, Westra S, Van Den Hurk BJJM, Seneviratne SI, Ward PJ, Pitman A, AghaKouchak A, Bresch DN, et al.. Future climate risk from compound events. Nature Climate Change, 2018, 8: 469-477,