Local atmospheric forcing dominates the panthalassa/pacific mid-latitude decadal variability

IF 4 1区地球科学 Q1 GEOGRAPHY, PHYSICAL

Global and Planetary Change Pub Date : 2025-09-24 DOI:10.1016/j.gloplacha.2025.105095

Sheng Wu , Yingying Zhao , Yongyun Hu , Yonggang Liu , Jian Zhang , Anni Zhao , Qin Wen , Xiang Li , Shuai Yuan , Zihan Yin

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引用次数: 0

Abstract

The Pacific Decadal Variability (PDV) is an important factor that significantly influences regional and global climate changes for modern climate. However, the mechanisms behind PDV remain a subject of ongoing debate, on which the investigation of PDV for land-sea configurations different from now may shed light. In this study, PDV dynamics for three typical land-sea configurations are investigated: the Mississippian, Triassic, and Pre-industrial experiments. Specifically, we analyze the relative contributions of atmospheric and oceanic forcings to PDV and investigate how local and remote factors influence its variability. The findings reveal that PDV is primarily driven by local atmospheric forcing, while oceanic heat transport plays a minor role. These findings provide new insights into the underlying mechanisms governing PDV, especially for different land-sea configurations, advancing our understanding of its role in Earth's climate system.

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局地大气强迫支配着泛海/太平洋中纬度年代际变率

太平洋年代际变率（Pacific Decadal Variability， PDV）是影响区域和全球现代气候变化的重要因子。然而，PDV背后的机制仍然是一个持续争论的主题，对陆地-海洋配置不同的PDV的研究可能会有所启示。本文研究了密西西比、三叠纪和前工业时期三种典型陆海构造的PDV动力学。具体而言，我们分析了大气强迫和海洋强迫对PDV的相对贡献，并研究了局地因子和远地因子如何影响其变率。结果表明，PDV主要受局地大气强迫驱动，海洋热输运起次要作用。这些发现为控制PDV的潜在机制提供了新的见解，特别是对于不同的陆海配置，促进了我们对其在地球气候系统中的作用的理解。

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

Global and Planetary Change 地学天文-地球科学综合

CiteScore

7.40

自引率

10.30%

发文量

226

审稿时长

63 days

期刊介绍： The objective of the journal Global and Planetary Change is to provide a multi-disciplinary overview of the processes taking place in the Earth System and involved in planetary change over time. The journal focuses on records of the past and current state of the earth system, and future scenarios , and their link to global environmental change. Regional or process-oriented studies are welcome if they discuss global implications. Topics include, but are not limited to, changes in the dynamics and composition of the atmosphere, oceans and cryosphere, as well as climate change, sea level variation, observations/modelling of Earth processes from deep to (near-)surface and their coupling, global ecology, biogeography and the resilience/thresholds in ecosystems. Key criteria for the consideration of manuscripts are (a) the relevance for the global scientific community and/or (b) the wider implications for global scale problems, preferably combined with (c) having a significance beyond a single discipline. A clear focus on key processes associated with planetary scale change is strongly encouraged. Manuscripts can be submitted as either research contributions or as a review article. Every effort should be made towards the presentation of research outcomes in an understandable way for a broad readership.