Mega‐Tripolar Precipitation Change Accompanying Water Isotopes in Holocene Asian Summer Monsoon Reanalysis
Abstract The climatic interpretations of speleothem δ 18 O c records over Asian summer monsoon (ASM) region have been controversial. Here, combining speleothem δ 18 O c records with the first transient Holocene simulation of an isotope‐enabled earth system model, we reconstruct a dynamically consistent spatio‐temporal evolution of the ASM precipitation using paleoclimate data assimilation. Our reconstruction finds a new mega‐tripolar pattern of precipitation variations accompanying a continental‐wide enrichment of δ 18 O c from the early to late Holocene over the entire ASM continental region. Precipitation peaked in the early Holocene over South Asia, northern China and southern China, but in the late Holocene over central China. This mega‐tripolar pattern of precipitation variations can help resolve the long‐standing controversy about the timing of Holocene ASM precipitation peaks reconstructed from various proxy records.
Authors
- Mi Yan (ORCID: https://orcid.org/0000-0003-4730-3781)
- Huayu Lu (ORCID: https://orcid.org/0000-0002-6306-6985)
- Weiyi Sun (ORCID: https://orcid.org/0000-0001-9043-706X)
- Qin Wen (ORCID: https://orcid.org/0000-0003-0858-3864)
- Raymond S. Bradley (ORCID: https://orcid.org/0000-0002-4032-9519)
- Michael Mann (ORCID: https://orcid.org/0000-0003-3067-296X)
- Liang Ning (ORCID: https://orcid.org/0000-0001-5629-0914)
- Lingfeng Wan (ORCID: https://orcid.org/0000-0002-7758-8629)
- Lili Lei (ORCID: https://orcid.org/0000-0003-4962-7843)
- Hai Xu (ORCID: https://orcid.org/0000-0002-5356-8156)
- Yanmin Qin (ORCID: https://orcid.org/0000-0002-5124-0050)
- Liangcheng Tan (ORCID: https://orcid.org/0000-0003-1932-7102)
- Wu Fen
- Zhengyu Liu (ORCID: https://orcid.org/0000-0003-4554-2666)
- Yongjin Wang (ORCID: https://orcid.org/0000-0001-6021-2724)
- Kefan Chen (ORCID: https://orcid.org/0000-0003-0535-5815)
- Jian Liu (ORCID: https://orcid.org/0000-0001-5772-7065)
- Deliang Chen (ORCID: https://orcid.org/0000-0003-0288-5618)
- Fei Xing (ORCID: https://orcid.org/0009-0006-8973-5282)
Institutions
- Nanjing Normal University (CN)
- Tianjin University (CN)
- Guizhou University (CN)
- Chinese Academy of Sciences (CN)
- Ministry of Education (RO)
- Northeast Climate Adaptation Science Center (US)
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application (CN)
- Institute of Earth Environment (CN)
- The Ohio State University (US)
- Ocean University of China (CN)
- University of Pennsylvania (US)
- Xi'an Jiaotong University (CN)
- Nanjing University (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Geophysical Research Letters
- Published
- 2025-09-03
- DOI
- https://doi.org/10.1029/2025gl116451
- Citations
- 5
- Primary Topic
- Geology and Paleoclimatology Research
- Type
- article
- Field-Weighted Citation Impact
- 6.50
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China