International Journal of Marine Science, 2024, Vol.14, No.3, 218-230 http://www.aquapublisher.com/index.php/ijms 218 Feature Review Open Access Variability of Indo-Pacific Ocean Basin Circulation and Its Impact on Climate Change MayH.Wang Hainan Institute of Biotechnology, Haikou, 570206, Hainan, China Corresponding email: 174708555@qq.com International Journal of Marine Science, 2024, Vol.14, No.3, doi: 10.5376/ijms.2024.14.0026 Received: 30 May, 2024 Accepted: 06 Jul., 2024 Published: 19 Jul., 2024 Copyright © 2024 Wang, This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproductio4n in any medium, provided the original work is properly cited. Preferred citation for this article: Wang M.H., 2024, Variability of Indo-Pacific ocean basin circulation and its impact on climate change, International Journal of Marine Science, 14(3): 218-230 (doi: 10.5376/ijms.2024.14.0026) Abstract This study aims to understand the complex interactions between oceanic and atmospheric processes in the Indo-Pacific region and how these interactions influence global climate patterns. The study reveals several key findings. The Indo-Pacific region exhibits significant variability in ocean circulation patterns, which are influenced by phenomena such as the El Niño-Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD). The Indonesian Throughflow (ITF) plays a crucial role in modulating these patterns, with its variability linked to both local and inter-basin processes. Additionally, the study highlights the impact of basin-wide warming in the Indian Ocean on regional climate, particularly the Asian summer monsoon. The study also underscores the importance of understanding multi-decadal variability and its interaction with anthropogenic climate change. The findings of this study have significant implications for climate prediction and risk management. The variability of the Indo-Pacific Ocean basin circulation is a critical factor in global climate dynamics, influencing weather patterns, monsoon systems, and long-term climate trends. Improved understanding of these processes is essential for enhancing climate models and developing more accurate seasonal and decadal climate predictions. This study contributes to the broader effort to mitigate the impacts of climate change by providing insights into the complex interactions within the Indo-Pacific region. Keywords Indo-Pacific Ocean; Climate variability; El Niño-Southern oscillation; Indian ocean dipole; Indonesian throughflow; Climate change; Monsoon; Ocean circulation 1 Introduction The Indo-Pacific Ocean Basin is a critical region that encompasses the Indian Ocean and the western and central Pacific Ocean. This area is characterized by complex oceanographic and atmospheric interactions that significantly influence global climate patterns. The Indo-Pacific region is home to the Indo-Pacific Warm Pool (IPWP), which contains the warmest sea surface temperatures (SSTs) on Earth and plays a pivotal role in driving atmospheric convection and precipitation patterns (Weller et al., 2016; Windler et al., 2020). The Indonesian Throughflow (ITF) is another crucial feature of this basin, acting as a conduit for warm, fresh waters from the Pacific to the Indian Ocean, thereby influencing regional and global ocean circulation (Song et al., 2007; Feng et al., 2018). Understanding the variability of ocean circulation in the Indo-Pacific Basin is essential for several reasons. Firstly, the region's oceanic and atmospheric dynamics are closely linked to major climate phenomena such as the El Niño-Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD), which have far-reaching impacts on global weather patterns, agriculture, and ecosystems (Kajtar et al., 2017; Wang, 2019; Abram et al., 2020). Secondly, changes in ocean circulation can affect the distribution of heat and freshwater, influencing sea level rise, marine biodiversity, and the frequency and intensity of extreme weather events (Ummenhofer et al., 2021; Weller et al., 2016). Additionally, the variability in ocean circulation can modulate the hydrological cycle, impacting freshwater availability and climate risk assessments for vulnerable societies in the Indian Ocean rim countries (Weller et al., 2016; Ummenhofer et al., 2021). This study investigate the variability of ocean circulation in the Indo-Pacific Ocean Basin and its impact on climate change. This study aims to quantify the changes in ocean circulation patterns over different temporal scales, from interannual to centennial, and identify the driving forces behind these changes, examine the
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