Severe convective outbreak in Siberia in May 2020: Event analysis and high-resolution simulation

Shikhov, Andrey; Antokhina, Olga; Gochakov, Alexander; Azhigov, Igor; Blinov, Denis; Gazimov, Timur; Kolker, Alexey; Tarabukina, Lena; Yarinich, Yulia; Chernokulsky, Alexander

doi:10.1016/j.atmosres.2023.107139

Cited by 2 publications

(1 citation statement)

References 89 publications

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“…Moreover, ERA5 data are still too coarsely resolved to realistically represent the cyclone structure, and thus underestimate wind speeds (e.g., Gentile & Gray, 2023). So further research using field observations and finer resolution data sets are needed (e.g., Shikhov et al, 2024;Volonté et al, 2024;Xu, 2019).…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Dynamics of Extreme Surface Winds Inside North Atlantic Midlatitude Cyclones

Son,

Franzke,

Son

2024

Geophysical Research Letters

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North Atlantic midlatitude cyclones are among the most severe weather systems, causing enormous economic damages and threatening human lives. The cyclone is typically characterized by cyclonic convergent surface winds, strong updrafts, and precipitation. However, extreme surface winds are often observed within the cyclone where downdrafts develop. The present study investigates the dynamical and thermodynamical characteristics of the horizontal winds impinging on the cold frontal surface and the associated downdrafts. It is shown that the cyclonic winds into the cold frontal surface are mainly responsible for the downdrafts that transport the high‐altitude horizontal momentum to the surface and cause intense surface winds. About half of the North Atlantic midlatitude cyclones are accompanied by the downdrafts especially in the southern and western parts of the cyclone center.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Dynamics of Extreme Surface Winds Inside North Atlantic Midlatitude Cyclones

Son,

Franzke,

Son

2024

Geophysical Research Letters

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Analysis of Dynamic Changes in Sea Ice Concentration in Northeast Passage during Navigation Period

He,

Liu,

Feng

et al. 2024

JMSE

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With global warming and the gradual melting of Arctic sea ice, the navigation duration of the Northeast Passage (NEP) is gradually increasing. The dynamic changes in sea ice concentration (SIC) during navigation time are a critical factor affecting the navigation of the passage. This study uses multiple linear regression and random forest to analyze the navigation windows of the NEP from 1979 to 2022 and examines the critical factors affecting the dynamic changes in the SIC. The results suggest that there are 25 years of navigable windows from 1979 to 2022. The average start date of navigable windows is approximately between late July and early August, while the end date is approximately early and mid-October, with considerable variation in the duration of navigable windows. The explanatory power of RF is significantly better than MLR, while LMG is better at identifying extreme events, and RF is more suitable for assessing the combined effects of all variables on the sea ice concentration. This study also found that the 2 m temperature is the main influencing factor, and the sea ice movement, sea level pressure and 10 m wind speed also play a role in a specific period. By integrating traditional statistical methods with machine learning techniques, this study reveals the dynamic changes of the SIC during the navigation period of the NEP and identifies its driving factors. This provides a scientific reference for the development and utilization of the Arctic Passage.

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Severe convective outbreak in Siberia in May 2020: Event analysis and high-resolution simulation

Cited by 2 publications

References 89 publications

Dynamics of Extreme Surface Winds Inside North Atlantic Midlatitude Cyclones

Dynamics of Extreme Surface Winds Inside North Atlantic Midlatitude Cyclones

Analysis of Dynamic Changes in Sea Ice Concentration in Northeast Passage during Navigation Period

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