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Zhang Q, Zhang R, Hao Q, Clift PD, Roberts AP, Florindo F, Li Q, Liu J, Liu Z, Gui K, Che H, Liu S, Qiao Q, Ju L, Jin C, Liu C, Liu Q, Xiao W, Guo Z. East Asian winter monsoon intensification over the Northwest Pacific Ocean driven by late Miocene atmospheric CO 2 decline. SCIENCE ADVANCES 2024; 10:eadm8270. [PMID: 38896619 PMCID: PMC11186488 DOI: 10.1126/sciadv.adm8270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 05/14/2024] [Indexed: 06/21/2024]
Abstract
East Asian winter monsoon (EAWM) activity has had profound effects on environmental change throughout East Asia and the western Pacific. Much attention has been paid to Quaternary EAWM evolution, while long-term EAWM fluctuation characteristics and drivers remain unclear, particularly during the late Miocene when marked global climate and Asian paleogeographic changes occurred. To clarify understanding of late Miocene EAWM evolution, we developed a high-precision 9-million-year-long stacked EAWM record from Northwest Pacific Ocean abyssal sediments based on environmental magnetism, sedimentology, and geochemistry, which reveals a strengthened late Miocene EAWM. Our paleoclimate simulations also indicate that atmospheric CO2 decline played a vital role in this EAWM intensification over the Northwest Pacific Ocean compared to other factors, including central Asian orogenic belt and northeastern Tibetan Plateau uplift and Antarctic ice-sheet expansion. Our results expand understanding of EAWM evolution from inland areas to the open ocean and indicate the importance of atmospheric CO2 fluctuations on past EAWM variability over large spatial scales.
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Affiliation(s)
- Qiang Zhang
- State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
| | - Ran Zhang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
| | - Qingzhen Hao
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
| | - Peter D. Clift
- Department of Earth Sciences, University College, London, UK
| | - Andrew P. Roberts
- Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
| | - Fabio Florindo
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - Qian Li
- Laoshan Laboratory, Qingdao, China
| | - Jianxing Liu
- Key Laboratory of Marine Geology and Metallogeny, First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China
| | - Ze Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Lab of Submarine Geosciences and Prospecting Techniques, MOE and College of Marine Geosciences, Ocean University of China, Qingdao, China
| | - Ke Gui
- State Key Laboratory of Severe Weather and Key Laboratory of Atmospheric Chemistry of China Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing, China
| | - Huizheng Che
- State Key Laboratory of Severe Weather and Key Laboratory of Atmospheric Chemistry of China Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing, China
| | - Shuangchi Liu
- State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
| | - Qingqing Qiao
- Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Xinjiang, China
| | - Lixia Ju
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
| | - Chunsheng Jin
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
| | - Chuanzhou Liu
- State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
| | - Qingsong Liu
- Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Wenjiao Xiao
- State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Xinjiang, China
| | - Zhengtang Guo
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
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Zhang L, Yang L, Kashiwakura K, Zhao L, Chen L, Han C, Nagao S, Tang N. Autumn and spring observations of PM 2.5-bound polycyclic aromatic hydrocarbons and nitro-polycyclic aromatic hydrocarbons in China and Japan. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 343:123139. [PMID: 38103715 DOI: 10.1016/j.envpol.2023.123139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/08/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023]
Abstract
The transboundary transport of polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs (NPAHs) aggravated by the East Asian winter monsoon is a major atmospheric environmental issue in East Asia. To thoroughly elucidate the role of the East Asian monsoon on regional PAH and NPAH pollution in East Asia, PM2.5-bound PAHs and NPAHs were investigated concurrently at five sites in Beijing and Shenyang in China and Tsukuba, Kanazawa, and Wajima in Japan in autumn (November 2018) and spring (March 2019). During both autumn and spring sampling periods, the concentrations of PM2.5, PAHs, and NPAHs at sites in China were 1-2 orders of magnitude higher than those at sites in Japan, and showed an opposite temporal variation, with higher concentrations during the autumn sampling period due to intensive emissions and unfavourable weather conditions. During the sampling periods, PAHs at the Beijing and Shenyang sites had mixed sources of traffic emissions and coal and biomass combustion, while those at the Tsukuba, Kanazawa, and Wajima sites were mainly characterized by domestic traffic emissions. In addition, NPAHs at the five sites were jointly affected by primary combustion sources and atmospheric generation, with a greater contribution of atmospheric generation to the Beijing and Shenyang sites. Based on backwards trajectory clustering and concentration-weighted trajectory analysis, external contributions to PM2.5, PAHs, and NPAHs at each site were relatively stable during the two sampling periods, and potential source areas were mainly distributed in domestic cities and nearby sea areas. Therefore, the apparent temporal differences in the characteristics and sources of pollutants between sites in the two countries indicate that transboundary pollution dominated by the East Asian winter monsoon was unobvious in autumn and spring. The results of the study provide a time-specific solution for the effective management of regional air pollution during the East Asian winter monsoon.
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Affiliation(s)
- Lulu Zhang
- School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China; Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes, Ministry of Education, Hubei University of Technology, Wuhan 430068, China; Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - Lu Yang
- Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | | | - Lixia Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Lijiang Chen
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Chong Han
- School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Seiya Nagao
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - Ning Tang
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan; Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan; College of Energy and Power, Shenyang Institute of Engineering, Shenyang 110136, China.
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Chen W, Zhang R, Wu R, Wen Z, Zhou L, Wang L, Hu P, Ma T, Piao J, Song L, Wang Z, Li J, Gong H, Huangfu J, Liu Y. Recent Advances in Understanding Multi-scale Climate Variability of the Asian Monsoon. ADVANCES IN ATMOSPHERIC SCIENCES 2023; 40:1-28. [PMID: 37359908 PMCID: PMC10199452 DOI: 10.1007/s00376-023-2266-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 01/15/2023] [Accepted: 02/20/2023] [Indexed: 06/28/2023]
Abstract
Studies of the multi-scale climate variability of the Asian monsoon are essential to an advanced understanding of the physical processes of the global climate system. In this paper, the progress achieved in this field is systematically reviewed, with a focus on the past several years. The achievements are summarized into the following topics: (1) the onset of the South China Sea summer monsoon; (2) the East Asian summer monsoon; (3) the East Asian winter monsoon; and (4) the Indian summer monsoon. Specifically, new results are highlighted, including the advanced or delayed local monsoon onset tending to be synchronized over the Arabian Sea, Bay of Bengal, Indochina Peninsula, and South China Sea; the basic features of the record-breaking mei-yu in 2020, which have been extensively investigated with an emphasis on the role of multi-scale processes; the recovery of the East Asian winter monsoon intensity after the early 2000s in the presence of continuing greenhouse gas emissions, which is believed to have been dominated by internal climate variability (mostly the Arctic Oscillation); and the accelerated warming over South Asia, which exceeded the tropical Indian Ocean warming, is considered to be the main driver of the Indian summer monsoon rainfall recovery since 1999. A brief summary is provided in the final section along with some further discussion on future research directions regarding our understanding of the Asian monsoon variability.
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Affiliation(s)
- Wen Chen
- Department of Atmospheric Sciences, Yunnan University, Kunming, 650500 China
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Renhe Zhang
- Department of Atmospheric and Oceanic Sciences, Fudan University, Shanghai, 200438 China
| | - Renguang Wu
- Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, 310058 China
| | - Zhiping Wen
- Department of Atmospheric and Oceanic Sciences, Fudan University, Shanghai, 200438 China
| | - Liantong Zhou
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Lin Wang
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Peng Hu
- Department of Atmospheric Sciences, Yunnan University, Kunming, 650500 China
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Tianjiao Ma
- Department of Atmospheric Sciences, Yunnan University, Kunming, 650500 China
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Jinling Piao
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Lei Song
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Zhibiao Wang
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Juncong Li
- Department of Atmospheric and Oceanic Sciences, Fudan University, Shanghai, 200438 China
| | - Hainan Gong
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Jingliang Huangfu
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
| | - Yong Liu
- Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
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Linkage of Strong Intraseasonal Events of the East Asian Winter Monsoon to the Tropical Convections over the Western Pacific. REMOTE SENSING 2022. [DOI: 10.3390/rs14132993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The East Asian winter monsoon (EAWM) is the most important climate system for transporting Arctic cold air to the tropics in boreal winter. Rapid intensification of the EAWM, such as a cold surge, can lead to increased tropical convection over the western Pacific, but the possible effects from the intraseasonal variation of EAWM is unclear. Using high temporal and spatial resolution satellite data, including Outgoing Longwave Radiation (OLR) and Tropical Rainfall Measuring Mission (TRMM) precipitation, we show that strong intraseasonal EAWM events are associated with increased tropical convection over the western Pacific for about 6–8 days. Our statistical analysis shows that the lifetime of a strong intraseasonal EAWM event is about 2 weeks, with the beginning, peak, and ending phases occurring at days −6, 0, and 6, respectively. During days 0 to 8, increased convection is observed over the western tropical Pacific, due to the anomalous convergence associated with the strengthened northerly winds over the South China Sea. Over land, increased precipitation is observed over Vietnam, northwestern Kalimantan, and the southern Philippines. In addition, the East Asian local Hadley circulation is strengthened during these days, in association with the enhanced tropical convection.
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