An optimization-based approach to track the Asian summer monsoon anticyclone across daily and interannual variability

Oleh Kachula, Bärbel Vogel, Gebhard Günther, and Rolf Müller

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Apr 2025	30	2	1	33
May 2025	121	25	6	152
Jun 2025	77	48	5	130
Jul 2025	75	32	7	114
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Cumulative views and downloads (calculated since 30 Apr 2025)

Month	HTML	PDF	XML	Total
Apr 2025	30	2	1	33
May 2025	121	25	6	152
Jun 2025	77	48	5	130
Jul 2025	75	32	7	114
Aug 2025	115	7	0	122
Sep 2025	359	27	1	387
Oct 2025	41	13	1	55
Nov 2025	14	1	0	15

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Latest update: 07 Nov 2025

Short summary

We propose a novel method to define the boundary of the Asian summer monsoon anticyclone (ASMA) and provide the inter-annual and intra-seasonal analyses based on 44 years (1980–2023) and highlight individual years – 2017, 2022 and 2023 during which aircraft campaigns StratoClim, ACCLIP and PHILEAS took place respectively. Our method shows consistent results with previous studies but also provide new information about possible bimodality of the ASMA and inter-annual decrease of the ASMA area.