Preprints
https://doi.org/10.5194/egusphere-2023-2751
https://doi.org/10.5194/egusphere-2023-2751
27 Nov 2023
 | 27 Nov 2023

Unveiling Amplified Isolation in Climate Networks due to Global Warming

Yifan Cheng, Panjie Qiao, Meiyi Hou, Yuan Chen, Wenqi Liu, and Yongwen Zhang

Abstract. Our study utilizes global reanalysis of near-surface daily air temperature data, spanning from 1949 to 2019, to construct climate networks. By employing community detection for each year, we reveal the evolving community structure of the climate network within the context of global warming. Our findings indicate significant changes in measures such as the network modularity, the number of communities, and the average community size over the past 30 years. Notably, the community structure of the climate network undergoes a discernible transition around 1982. We attribute this transition to the substantial increase in isolated nodes after 1982, primarily concentrated in equatorial ocean regions. Additionally, we demonstrate that nodes experiencing amplified isolation tend to diminish connectivity with other nodes globally, particularly those within the same oceanic basin, while showing a significant strengthening of connections with the Eurasian and North African continents. We propose that the mechanism behind the amplified isolation in the climate network can be understood through weakened ocean current interactions under global warming.

Yifan Cheng, Panjie Qiao, Meiyi Hou, Yuan Chen, Wenqi Liu, and Yongwen Zhang

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-2751', Reik Donner, 05 Jan 2024
  • RC2: 'Comment on egusphere-2023-2751', Jingfang Fan, 16 Jan 2024
Yifan Cheng, Panjie Qiao, Meiyi Hou, Yuan Chen, Wenqi Liu, and Yongwen Zhang
Yifan Cheng, Panjie Qiao, Meiyi Hou, Yuan Chen, Wenqi Liu, and Yongwen Zhang

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Short summary
Global warming has triggered profound transformations in the Earth's climate system. Our study reveals a reduction in the connectivity of highly isolated nodes located along the equator, particularly in their interactions with neighboring regions within the same oceanic basin. Conversely, these nodes display strengthened connections with specific continents, highlighting the intricate interplay between global warming and the evolving structure of climate networks.