How the unparalleled dust storm over the Arabian Peninsula in May 2022 exacerbated the record-breaking heatwave in China in the ensuing summer

Atmospheric Research, Год журнала: 2025, Номер unknown, С. 108054 - 108054

Опубликована: Март 1, 2025

Язык: Английский

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Enhanced relationship between preceding autumn-winter sea ice over Greenland Sea and following Indian Summer Monsoon rainfall after early-2000s

Atmospheric Research, Год журнала: 2025, Номер unknown, С. 108228 - 108228

Опубликована: Май 1, 2025

Язык: Английский

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The cooperative effects of November Arctic sea ice and Eurasian snow cover on the Eurasian surface air temperature in January–February

International Journal of Climatology, Год журнала: 2024, Номер unknown

Опубликована: Сен. 10, 2024

Abstract Due to their significant influence on large‐scale atmospheric circulation and climate anomalies, the variability of Arctic sea ice Eurasian snow cover during late autumn combined effects have garnered increasing attention. This study aims investigate physical mechanism underlying covariation among Barents‐Kara Seas (BKS) concentration (SIC), extent (SCE) ensuing winter surface air temperature (SAT). The statistics results singular value decomposition suggest a linkage between decreased BKS SIC, zonal “negative–positive” dipole SCE anomalies over Eurasia in November cold SAT January–February (JF). Observational diagnosis analyses about meridional moisture, heat transport flux demonstrate that subpolar anticyclonic plays crucial role connecting predominant modes SIC SCE. Furthermore, can jointly excite upward‐propagating planetary waves into stratosphere, while simultaneously reducing gradient. westerly wind deceleration favours continuous wave propagation. Consequently, stratospheric polar vortex is significantly weakened, along with negative Northern Annular Mode propagating downward from stratosphere troposphere. Negative‐phase Oscillation correspondingly develop JF, resulting widespread continent. These are further confirmed by numerical sensitivity experiments Community Atmosphere Model forced above mentioned anomalies. empirical hindcast model prediction skill JF enhanced when both signals considered.

Язык: Английский

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

Journal of Marine Science and Engineering, Год журнала: 2024, Номер 12(10), С. 1723 - 1723

Опубликована: Окт. 1, 2024

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

Язык: Английский

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“Colder North Eurasia, warmer North America” pattern in December 2023 and its blocking precursor

Atmospheric Research, Год журнала: 2024, Номер 314, С. 107807 - 107807

Опубликована: Ноя. 17, 2024

Язык: Английский

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