Role of the Indian Ocean basin mode in driving the interdecadal variations of summer precipitation over the East Asian monsoon boundary zone

Wang, Jing; Liu, Yanju; Cheng, Fei; Song, Chengyu; Li, Qiaoping; Ding, Yihui; Xu, Xiangde

doi:https://doi.org/10.5194/acp-24-5099-2024

Articles | Volume 24, issue 8

https://doi.org/10.5194/acp-24-5099-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-5099-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 8

Research article

|

30 Apr 2024

Research article |

| 30 Apr 2024

Role of the Indian Ocean basin mode in driving the interdecadal variations of summer precipitation over the East Asian monsoon boundary zone

Jing Wang, Yanju Liu, Fei Cheng, Chengyu Song, Qiaoping Li, Yihui Ding, and Xiangde Xu

Supplement

https://doi.org/10.5194/acp-24-5099-2024-supplement

Data sets

CRU TS3.26 CRU https://catalogue.ceda.ac.uk/uuid/3f8944800cc48e1cbc29a5ee12d8542d

CESM1_LENS NCAR https://www.cesm.ucar.edu/community-projects/lens/data-sets

CESM1_IOPES NCAR https://www.earthsystemgrid.org/dataset/ucar.cgd.ccsm4.IOD-PACEMAKER.html

ERSSTv5 NOAA https://www1.ncdc.noaa.gov/pub/data/cmb/ersst/v5/netcdf/

20CRv2c NOAA-CIRES https://psl.noaa.gov/data/gridded/data.20thC\_ReanV2c.html

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Short summary

Based on long-term observational, reanalysis, and numerical model simulation datasets from 1901 through 2014, this study shows that precipitation over the East Asian monsoon boundary zone featured prominent interdecadal changes, with dry summers during the periods preceding 1927, 1939–1945, 1968–1982, and 1998–2010 and wet summers during 1928–1938, 1946–1967, and 2011 onwards. The Indian Ocean basin mode is an important oceanic modulator responsible for its interdecadal variations.