Attribution of the Record‐Breaking Extreme Cold Event Over Northern East Asia in December 2023

Abstract Against the backdrop of global warming, Northern East Asia experienced a record‐breaking extreme cold event during December 13 to 19 in 2023. The mechanisms behind this extreme cold event remain unclear. This study uses the circulation projection method to detect and quantify the contributi...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Hainan Gong, Kangjie Ma, Lin Wang, Wen Chen
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2024
Subjects:
extreme cold events
atmospheric teleconnection
Arctic‐midlatitude linkage
Attribution
East Asia
internal variability
Geophysics. Cosmic physics
QC801-809
Arctic
albedo
Global warming
Sea ice
Online Access:https://doi.org/10.1029/2024GL112568
https://doaj.org/article/f34502c912b3444885661566f2b3fbc3
Description
Summary:Abstract Against the backdrop of global warming, Northern East Asia experienced a record‐breaking extreme cold event during December 13 to 19 in 2023. The mechanisms behind this extreme cold event remain unclear. This study uses the circulation projection method to detect and quantify the contributions of various factors to this extreme cold event. The findings indicate that large‐scale atmospheric circulation anomalies are the predominant factors triggering this cold wave. The Polar‐Eurasian (POL)‐like teleconnection pattern is identified as a key driver for the cold anomalies, contributing approximately 85% of total cold anomalies in Northern East Asia in this event. Although the POL‐like teleconnection is largely internally generated, the preceding low sea ice levels in the Barents and Kara Seas can strengthen and maintain POL teleconnection. Additionally, preceding November increased snow cover in Northern East Asia can further amplify this cold event by enhancing local surface albedo and reducing incoming solar shortwave radiation.

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