Global Increases in Compound Flood‐Hot Extreme Hazards Under Climate Warming

Gu, Ling; Troin, Magali; Yin, Jiabo; Slater, Louise; Wang, Huimin; Guo, Qinglian; Feng, Maoyuan; Hui, Qing; Zhao, Tongtiegang

doi:10.1029/2022gl097726

Cited by 55 publications

(27 citation statements)

References 66 publications

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“…An HW_HI/HW_TW event occurring prior to an HP event, within a given time window, is defined as an HWHP event (noted as HWHP_HI and HWHP_TW, respectively) (Lombardo and Ayyub, 2015;Zhang and Villarini, 2020;Chen et al, 2021;Liao et al, 2021;Wu et al, 2021;You and Wang, 2021;Gu et al, 2022;Ning et al, 2022). The window is chosen as 3 days in this study, which is the same as previous studies (Lombardo and Ayyub, 2015;Zhang and Villarini, 2020;Chen et al, 2021;Liao et al, 2021;Wu et al, 2021;You and Wang, 2021;Gu et al, 2022;Ning et al, 2022). In the following analyses, we also examine whether our results are sensitive to the choice of the time window (e.g., 2, 4, and, 7 days).…”

Section: Identification Of Sequential Heatwave-heavy Precipitation Ev...mentioning

confidence: 99%

“…Chen et al (2021) found the increased sequential flood-heatwave events across China and indicated that increased HW events dominate the increased compound events. Gu et al (2022) projected increases in bivariate compound flood-heatwave hazards globally under future warming and attributed these increases to enhancing HW events.…”

Section: Spatial Clustering and Changes In The Extent Of Hwhp Eventsmentioning

confidence: 99%

“…Although changes in HWs and HP have been investigated individually at global and regional scales, few studies have focused on sequential heatwave-heavy precipitation (HWHP) events (i.e., an HP event occurring within several days after an HW event) (Lombardo and Ayyub, 2015;Zhang and Villarini, 2020;Chen et al, 2021;Liao et al, 2021;Wu et al, 2021;You and Wang, 2021;Gu et al, 2022;Ning et al, 2022). In the last decade, rare rainstorms tightly following the record-breaking HWs have been reported in some areas.…”

Section: Introductionmentioning

confidence: 99%

“…Given that both HWs and HP are becoming more extreme and more frequent, the increased risk of HW accompanied by HP is expected to rise. Thus, these HWHP events have been the topic of recent studies (Lombardo and Ayyub, 2015;Zhang and Villarini, 2020;Chen et al, 2021;Liao et al, 2021;Wu et al, 2021;You and Wang, 2021;Gu et al, 2022;Ning et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Since both HWs and HP over China occur mostly in summer (June-August), joint events are highly likely. Although recent studies have investigated compound flooding and hot extremes over China (Wu et al, 2021;You and Wang, 2021;Gu et al, 2022;Ning et al, 2022), the following questions remain unknown:…”

Section: Introductionmentioning

confidence: 99%

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Substantial Increase in Heavy Precipitation Events Preceded by Moist Heatwaves Over China During 1961–2019

Min

et al. 2022

Front. Environ. Sci.

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Both moist heatwaves (HWs) and heavy precipitation events (HP) have increased in both frequency and magnitude over China in recent decades. However, the relationship between HW and HP and changes in the lagged coincidence of events (i.e., the occurrence of an HP event several days after an HW event, noted HWHP) remain unknown. We show here that HWHP events account for nearly one-third of HP events over China in summer, with high values in North China, Northeast China, and the East arid zone. HWHP events assessed using the heat index and the wet-bulb temperature methods increased by 45.25 and 23.97% from 1961 to 2019, respectively. These concurrent HWHP events tend to be spatially clustered, and the areas affected simultaneously have grown significantly. The increase in HW is the major driver of these changes in HWHP events, except in the western arid zone and North China. Our findings provide an understanding of the spatiotemporal changes in HWHP events over China and their implications for disaster mitigation.

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Section: Identification Of Sequential Heatwave-heavy Precipitation Ev...mentioning

confidence: 99%

Section: Spatial Clustering and Changes In The Extent Of Hwhp Eventsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Substantial Increase in Heavy Precipitation Events Preceded by Moist Heatwaves Over China During 1961–2019

Min

et al. 2022

Front. Environ. Sci.

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Climate change exacerbates the compounding of heat stress and flooding in the mid‐latitudes

Treppiedi,

Villarini,

Noto

2024

Intl Journal of Climatology

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Heat stress and flood impacts have been extensively studied separately because of their significant societal and economic impacts, albeit apart from each other. Here we show that heat stress can trigger floods across large areas of North and South America, southern Africa, Asia and eastern Australia. We also show that the compounding of heat stress and floods is projected to worsen under climate change. This effect is magnified as we move from the Shared Socioeconomic Pathways (SSPs) 1–2.6 to 5–8.5. Moreover, in the future, the compounding between heat stress and floods is projected to extend to Europe and Russia, two areas where it has not been identified as relevant in the past. Moreover, by intersecting our results with future projections of the population of urban agglomerations, we find that heat stress/flood compound can pose a serious risk to a large portion of the world population. These results highlight the need towards improved preparation and mitigation measures that account for the compound nature of heat stress and flooding, and how the compounding is expected to be exacerbated because of climate change.

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Latest Advances and Challenges in Extreme Flood 3D Simulation

Sharma,

Johnson

2024

Arts, Research, Innovation and Society

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This chapter canvasses the latest developments in the modelling and communication of environmental extremes, with a focus on floods. Three scenarios are explored. The first refers to real-time prediction, including the current modelling basis that is adopted, and the visualisation/communication strategies in place. The second refers to an environmental extreme event that is conditional to a failure scenario, as is the case when an existing infrastructure (i.e. levee or spillway in an extreme flood) fails. The third, more complex scenario is the occurrence of a compound or joint extreme, possibly in the future, where extreme storms will intensify. A compound extreme here could represent a flood event that follows from an incident of rare storm conditions on a fire-damaged landscape. While the modelling challenges are significant, visualisation is even more challenging, as the scenario occurs under a hypothetical future. Demonstrating how coupled models can support the anticipation of extreme event scenarios, the chapter considers implications for risk assessment and communication that can support future preparedness and resilience. Surveying knowledge gaps that still need to be bridged, the authors formulate a list of key requirements in the fields of data availability, processing and representation.

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Global Increases in Compound Flood‐Hot Extreme Hazards Under Climate Warming

Cited by 55 publications

References 66 publications

Substantial Increase in Heavy Precipitation Events Preceded by Moist Heatwaves Over China During 1961–2019

Substantial Increase in Heavy Precipitation Events Preceded by Moist Heatwaves Over China During 1961–2019

Climate change exacerbates the compounding of heat stress and flooding in the mid‐latitudes

Latest Advances and Challenges in Extreme Flood 3D Simulation

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