Mi Yan, Zhengyu Liu, Bin Wang, Xinwei Kong, Liang Ning, Qin Wen, Jian Liu
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引用次数: 0
Abstract
The East Asian monsoon (EAM) and the Australian monsoon (AUM), which constitute the two subsystems of the Asian-Australian monsoon system, are dynamically linked through cross-equatorial flows while also responding distinctly to external forcings. Although previous studies have examined their relationships across various timescales, their connection at the orbital timescale remains underexplored. Through a series of simulations, we demonstrate that Australian Summer Monsoon (AUSM) precipitation varies out of phase with East Asian Summer Monsoon (EASM) precipitation at the precession timescale due to local insolation changes. At the same timescale, the relationship between AUSM circulation and East Asian winter monsoon (EAWM) circulation is weak. This weak linkage arises from the precession-induced inter-hemispheric insolation gradient, which diminishes cross-equatorial flow and consequently weakens the dynamical links between AUSM and EAWM circulations.
期刊介绍：
npj Climate and Atmospheric Science is an open-access journal encompassing the relevant physical, chemical, and biological aspects of atmospheric and climate science. The journal places particular emphasis on regional studies that unveil new insights into specific localities, including examinations of local atmospheric composition, such as aerosols.
The range of topics covered by the journal includes climate dynamics, climate variability, weather and climate prediction, climate change, ocean dynamics, weather extremes, air pollution, atmospheric chemistry (including aerosols), the hydrological cycle, and atmosphere–ocean and atmosphere–land interactions. The journal welcomes studies employing a diverse array of methods, including numerical and statistical modeling, the development and application of in situ observational techniques, remote sensing, and the development or evaluation of new reanalyses.
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