The atmospheric ‘cold blob’ over Fennoscandia from October 2023 to January 2024

IF 2.3 4区地球科学 Q3 METEOROLOGY & ATMOSPHERIC SCIENCES

Weather Pub Date : 2024-05-06 DOI:10.1002/wea.4570

Mika Rantanen, Otto Hyvärinen, Andrea Vajda, Alexey Karpechko

引用次数: 0

Abstract

Between October 2023 and January 2024, a remarkably persistent cold air anomaly prevailed over Fennoscandia on an otherwise record‐warm planet. This article describes the temperature anomalies, atmospheric circulation and seasonal predictions associated with the cold blob. The 4‐month period from October to January was the third coldest in Fennoscandia during the ongoing century. The cold blob was associated with anomalous atmospheric circulation; for example, jet stream wind speeds were exceptionally high south of Fennoscandia. Furthermore, seasonal forecasts failed to capture the cold blob, which may be related to difficulties in simulating El Niño teleconnections by long‐range forecasting systems.

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2023 年 10 月至 2024 年 1 月期间芬诺斯坎迪亚上空的大气 "冷球

2023 年 10 月至 2024 年 1 月期间，在一个创纪录的温暖星球上，一股异常持续的冷空气笼罩着芬诺斯坎迪亚。本文介绍了与冷球相关的温度异常、大气环流和季节预测。从 10 月到次年 1 月的 4 个月是本世纪芬诺斯坎迪亚第三冷的时期。寒潮与大气环流异常有关，例如，芬诺斯坎迪亚南部的喷流风速特别高。此外，季节性预报未能捕捉到寒流，这可能与远程预报系统难以模拟厄尔尼诺远距离联系有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Weather METEOROLOGY & ATMOSPHERIC SCIENCES-

CiteScore

2.80

自引率

5.30%

发文量

191

审稿时长

6-12 weeks

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