The C‐Shaped Landmass: A Key Driver of Monsoon Formation

Abstract Monsoon dynamics research has largely focused on idealized rectangular continents, primarily in the Northern Hemisphere mid‐latitudes. To investigate the broader impact of landmass configuration on monsoon formation and variability, we conducted extensive sensitivity experiments. Our findin...

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Main Authors: Junyu Mei, Xinyu Wen, Fuda Yu, Yuzhen Yan
Format: Article
Language:English
Published: Wiley 2025-04-01
Series:Geophysical Research Letters
Subjects:
Online Access:https://doi.org/10.1029/2024GL112127
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author Junyu Mei
Xinyu Wen
Fuda Yu
Yuzhen Yan
author_facet Junyu Mei
Xinyu Wen
Fuda Yu
Yuzhen Yan
author_sort Junyu Mei
collection DOAJ
description Abstract Monsoon dynamics research has largely focused on idealized rectangular continents, primarily in the Northern Hemisphere mid‐latitudes. To investigate the broader impact of landmass configuration on monsoon formation and variability, we conducted extensive sensitivity experiments. Our findings reveal that a C‐shaped continent in the tropical and subtropical latitudes is optimal for monsoon development. This configuration fosters three key monsoon characteristics: (a) A well‐defined pathway for water vapor transport, involving cross‐equatorial winds and monsoonal trough turning winds; (b) A thermally induced low‐pressure system over the southeastern continental margin, driving persistent water vapor convergence; and (c) A distinct monsoon rain belt extending from the southeastern corner of the continent into adjacent oceans. These results provide a definitive answer to the question of which landmass shape is most conducive to monsoon formation and significantly advance our understanding of monsoon dynamics.
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publishDate 2025-04-01
publisher Wiley
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series Geophysical Research Letters
spelling doaj-art-78d5b8bc8a584e0eb332c57c98e742a42025-08-20T02:30:59ZengWileyGeophysical Research Letters0094-82761944-80072025-04-01527n/an/a10.1029/2024GL112127The C‐Shaped Landmass: A Key Driver of Monsoon FormationJunyu Mei0Xinyu Wen1Fuda Yu2Yuzhen Yan3Department of Atmospheric and Oceanic Sciences School of Physics Peking University Beijing ChinaDepartment of Atmospheric and Oceanic Sciences School of Physics Peking University Beijing ChinaDepartment of Atmospheric and Oceanic Sciences School of Physics Peking University Beijing ChinaDepartment of Atmospheric and Oceanic Sciences School of Physics Peking University Beijing ChinaAbstract Monsoon dynamics research has largely focused on idealized rectangular continents, primarily in the Northern Hemisphere mid‐latitudes. To investigate the broader impact of landmass configuration on monsoon formation and variability, we conducted extensive sensitivity experiments. Our findings reveal that a C‐shaped continent in the tropical and subtropical latitudes is optimal for monsoon development. This configuration fosters three key monsoon characteristics: (a) A well‐defined pathway for water vapor transport, involving cross‐equatorial winds and monsoonal trough turning winds; (b) A thermally induced low‐pressure system over the southeastern continental margin, driving persistent water vapor convergence; and (c) A distinct monsoon rain belt extending from the southeastern corner of the continent into adjacent oceans. These results provide a definitive answer to the question of which landmass shape is most conducive to monsoon formation and significantly advance our understanding of monsoon dynamics.https://doi.org/10.1029/2024GL112127monsoonAGCMlandmassland shapeasian summer monsoon
spellingShingle Junyu Mei
Xinyu Wen
Fuda Yu
Yuzhen Yan
The C‐Shaped Landmass: A Key Driver of Monsoon Formation
Geophysical Research Letters
monsoon
AGCM
landmass
land shape
asian summer monsoon
title The C‐Shaped Landmass: A Key Driver of Monsoon Formation
title_full The C‐Shaped Landmass: A Key Driver of Monsoon Formation
title_fullStr The C‐Shaped Landmass: A Key Driver of Monsoon Formation
title_full_unstemmed The C‐Shaped Landmass: A Key Driver of Monsoon Formation
title_short The C‐Shaped Landmass: A Key Driver of Monsoon Formation
title_sort c shaped landmass a key driver of monsoon formation
topic monsoon
AGCM
landmass
land shape
asian summer monsoon
url https://doi.org/10.1029/2024GL112127
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AT xinyuwen thecshapedlandmassakeydriverofmonsoonformation
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AT xinyuwen cshapedlandmassakeydriverofmonsoonformation
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