The unprecedented spatial extent and intensity of the 2021 summer extreme heatwave event over the Western North American regions

Lo, Shih-How; Chen, Cheng-Ta; Hsu, Huang‐Hsiung; Shih, Ming-Fu; Liang, Hsin-Chien

doi:10.1016/j.wace.2023.100576

Cited by 3 publications

(1 citation statement)

References 54 publications

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“…Severe heat extremes are among the most deadly climate hazards and they have profound impacts on human safety, society, and natural ecosystems (Batibeniz et al., 2023; IPCC, 2013, 2021; Liu et al., 2021; Roethlisberger & Papritz, 2023; Thiery et al., 2021; Wang, Li, et al., 2023; Wang & Wang, 2023; Zhou et al., 2023). In 2021, unprecedented heat extremes occurred in North America with an abnormal high‐pressure circulation (Bartusek et al., 2022; Lo et al., 2023; Zhang, Zhou, et al., 2023). Moreover, in 2022, the deaths of more than 15,000 people in Europe were associated with unusual heat extremes, and the temperature in the United Kingdom exceeded 40°C for the first time (WMO, 2023).…”

Section: Introductionmentioning

confidence: 99%

Increased Population Exposure to Heat and Wet Extremes Moving From Chinese to Global 1.5 or 2.0°C Warming

Qin,

Xie

2023

JGR Atmospheres

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The Paris Agreement proposed two global warming levels relative to the preindustrial period, with the ideal objective of 1.5°C warming and an upper boundary of 2.0 °C. However, the years when the temperature will first reach 1.5 or 2.0°C vary in different regions. Therefore, climate extremes and their population exposure are still not clear at regional or global warming levels. This study investigated climate extremes in China at different Chinese and global warming with 16 CMIP6 models under the middle SSP245 scenario. In China, the year when 1.5°C warming is projected to occur is 2020 and 2035 for 2.0°C warming. These values are more than 10 years earlier than the corresponding global warming levels of 2030 and 2049. Population exposure to percentile‐based heat extremes at global 1.5°C warming is projected to greatly increase relative to those when 1.5°C warming occurs in China due to increases in climate extremes, and exposure to absolute heat extreme indices is projected to decrease from Chinese to global 2.0°C warming under the joint impacts of increases in extremes and population decreases. Furthermore, from Chinese to global 1.5°C warming, about 344 million people will experience increased exposure to heat, wet and dry extremes, and around 468 and 371 million people will be affected by increased exposure to heat–wet and heat–dry extremes, respectively. Thus, a more adaptive strategy should be proposed to cope with the future possible natural hazards caused by heat–wet and heat–dry extremes.

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Section: Introductionmentioning

confidence: 99%

Increased Population Exposure to Heat and Wet Extremes Moving From Chinese to Global 1.5 or 2.0°C Warming

Qin,

Xie

2023

JGR Atmospheres

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Evaluation and Projection of Population Exposure to Temperature Extremes over the Beijing–Tianjin–Hebei Region Using a High-Resolution Regional Climate Model RegCM4 Ensemble

Qin,

Xie,

Han

et al. 2024

Adv. Atmos. Sci.

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Role of atmospheric resonance and land–atmosphere feedbacks as a precursor to the June 2021 Pacific Northwest Heat Dome event

Li,

Mann,

Wehner

et al. 2024

Proc. Natl. Acad. Sci. U.S.A.

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We demonstrate an indirect, rather than direct, role of quasi-resonant amplification of planetary waves in a summer weather extreme. We find that there was an interplay between a persistent, amplified large-scale atmospheric circulation state and soil moisture feedbacks as a precursor for the June 2021 Pacific Northwest “Heat Dome” event. An extended resonant planetary wave configuration prior to the event created an antecedent soil moisture deficit that amplified lower atmospheric warming through strong nonlinear soil moisture feedbacks, favoring this unprecedented heat event.

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The unprecedented spatial extent and intensity of the 2021 summer extreme heatwave event over the Western North American regions

Cited by 3 publications

References 54 publications

Increased Population Exposure to Heat and Wet Extremes Moving From Chinese to Global 1.5 or 2.0°C Warming

Increased Population Exposure to Heat and Wet Extremes Moving From Chinese to Global 1.5 or 2.0°C Warming

Evaluation and Projection of Population Exposure to Temperature Extremes over the Beijing–Tianjin–Hebei Region Using a High-Resolution Regional Climate Model RegCM4 Ensemble

Role of atmospheric resonance and land–atmosphere feedbacks as a precursor to the June 2021 Pacific Northwest Heat Dome event

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