Article
Geography, Physical
Honghao Niu, Mengzhen Li, Laurent Marquer, Teija Alenius, Frank M. Chambers, Dorothy Sack, Guizai Gao, Jiangyong Wang, Meng Meng, Linlin Liu, Lina Song, Anyi Xu, Dongmei Jie
Summary: Studying the interactions between paleoecology and climate variations in semi-arid areas, such as the Songnen grasslands in northeastern China, provides insights into how future vegetation changes and hydrological variations may impact semi-arid ecosystems. This study presents a high resolution palaeoecological dataset covering the past 7300 years and reveals the dynamics of vegetation and water levels in the Dabusu peatlands. By comparing these features with regional climate change, the study suggests that East Asian Summer Monsoon circulations might be the main driving force controlling the regional paleovegetation dynamics and hydrological variations.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Environmental Sciences
Yuheng Tang, Anmin Duan
Summary: The study utilizes convolutional neural networks and transfer learning to predict the East Asian summer monsoon, demonstrating highly consistent and quantitatively strong predictive features in signal contribution.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Kairan Ying, Dabang Jiang, Xiaogu Zheng, Carsten S. Frederiksen, Difei Deng
Summary: This study finds that three best East Asian summer monsoon indices can explain a large portion of the variability in East Asian summer monsoon rainfall, including some potential predictable factors such as El Nino-Southern Oscillation, Arctic Oscillation, and sea surface temperatures in the western Pacific, tropical and southern Atlantic, and southern Indian oceans.
Article
Meteorology & Atmospheric Sciences
Beilei Wu, Xianmei Lang, Dabang Jiang
Summary: The investigation of the past evolution of the northern boundary of the East Asian summer monsoon (EASM) over the last 21,000 years reveals a southeastward migration from 21 ka to 18 ka and a northwestward shift since 15 ka, driven mainly by orbital insolation. The boundary responses to changing meltwater fluxes were similar but weak, and the EASM northern limit was closely linked to the forest-steppe boundary, showing spatial consistency in positions, orientations, and change trends between reconstructed and simulated boundaries.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Meteorology & Atmospheric Sciences
Shu Gui, Ruowen Yang, Feng Zeng, Jinxin Cheng
Summary: This study investigates the interdecadal variability of the interface between the Indian summer monsoon and the East Asian summer monsoon. Results suggest that this variability is closely linked to two air-sea coupled modes, which influence the strength of the East Asian summer monsoon by affecting the western North Pacific subtropical high and causing cyclonic and anticyclonic anomalies. In recent decades, the impact of one of these modes has weakened, while the other has become more influential on this variability.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Zhongda Lin, Cholaw Bueh
Summary: This study investigates the interannual variability of the summer East Asian trough (EAT) and its impact on rainfall using the ERA5 dataset. The results show that changes in EAT intensity lead to increased rainfall in the East Asian subtropical rainy belt and decreased rainfall in North China. The variability of EAT intensity is significantly influenced by the extratropical Arctic Oscillation and tropical rainfall anomalies. Moreover, the EAT intensity is connected to summer sea surface temperature anomalies in the tropical eastern Pacific.
Article
Meteorology & Atmospheric Sciences
Shu Gui, Ruowen Yang, Feng Zeng, Jinxin Cheng
Summary: This study investigates the interdecadal variability of the interface between the Indian summer monsoon and the East Asian summer monsoon. Results suggest that this variability is characterized by a zonal movement associated with variations between the Indian summer monsoon and the East Asian summer monsoon. This variability is closely linked to two air-sea coupled modes, resembling the Asian-Pacific Oscillation and the North Atlantic tripole pattern. Modeling results confirm the influence of these patterns on the interdecadal variability.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Chao He, Wen Zhou, Tim Li, Tianjun Zhou, Yuhao Wang
Summary: Anthropogenic emissions decreased during the COVID-19 pandemic, leading to an enhanced East Asian summer monsoon (EASM) in terms of precipitation and southerly wind at lower troposphere. This enhancement is a fast response to reduced aerosols and is supported by both observational and simulated evidence. The mechanism behind the enhancement is the enhanced zonal thermal contrast between Asian continent and the western North Pacific in the troposphere, due to reduced aerosol concentration over Asian continent and associated latent heating feedback.
Article
Meteorology & Atmospheric Sciences
Lingying Chen, Wen Chen, Peng Hu, Shangfeng Chen, Xiadong An
Summary: This study examines the climatological characteristics of the retreat of the East Asian summer monsoon (EASM) based on observation and reanalysis data. The study finds that the retreat of the EASM is associated with the strengthening of northerly winds over coastal East Asia, the eastward movement of the western Pacific subtropical high, and the southeastward movement of the divergent center in the upper troposphere. The retreat of the EASM is also accompanied by decreased rainfall, the decline of the wet season, and broadscale cooling over East Asia.
Article
Engineering, Environmental
Xiaohui Wang, Kai Liu, Lixin Zhu, Changjun Li, Zhangyu Song, Daoji Li
Summary: The study shows that the East Asian summer monsoon effectively transports atmospheric microplastics from Vietnam, the Philippines, and Malaysia to southeastern China, with only some of the microplastics entering the marine ecosystem. During the East Asian summer monsoon season, the average abundance of atmospheric microplastics in the sampling area was 0.39 items/100 m3, with high variability among sampling sites.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Pengfei Shi, Hui Lu, L. Ruby Leung, Yujun He, Bin Wang, Kun Yang, Le Yu, Li Liu, Wenyu Huang, Shiming Xu, Juanjuan Liu, Xiaomeng Huang, Lijuan Li, Yanluan Lin
Summary: This study demonstrates significant improvements in simulating the interannual variations of East Asian summer monsoon (EASM) rainfall by using a weakly coupled data assimilation system to constrain soil moisture and soil temperature in a coupled climate model. Significant multi-year rainfall prediction skill over East China and Tibetan Plateau is also shown in hindcast simulations initialized with well-balanced states from the coupled simulation with data assimilation. The strong land-atmosphere coupling in large areas over China is attributed to the improvements in predicting EASM rainfall.
Article
Environmental Sciences
Chenwei Fang, Jim M. Haywood, Ju Liang, Ben T. Johnson, Ying Chen, Bin Zhu
Summary: Using the UK Earth System Model version 1 (UKESM1), this study finds that reductions in carbonaceous aerosol and SO2 emissions can significantly impact the South Asian summer monsoon and East Asian summer monsoon, leading to changes in the large-scale circulation over Asia. Reductions in carbonaceous aerosols extend and intensify the summer rainy season in South Asia and East Asia, while reductions in SO2 result in a shorter and weaker rainy season. Overall, decreasing both types of aerosol emissions enhances monsoon precipitation and 850 hPa circulation.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Meteorology & Atmospheric Sciences
Beilei Wu, Xianmei Lang, Dabang Jiang
Summary: The future changes in the East Asian summer monsoon (EASM) northern boundary have been investigated based on the median of 22 selected CMIP6 models. The results show a northward movement of the boundary, which has implications for precipitation distribution and vegetation and is important for climate change adaptation policies.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Qin Wen, Mi Yan, Zhengyu Liu, Jian Liu
Summary: In this study, sensitivity experiments were conducted in a climate model to investigate the impacts of insolation changes on the East Asian winter monsoon and Australian summer monsoon during the early and middle Holocene. The results showed that the East Asian winter monsoon is enhanced due to local insolation changes, while the Australian summer monsoon is enhanced due to remote forcing from both the Northern Hemisphere low latitude and Southern Hemisphere high latitude.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
Yulong Ren, Ping Yue, Qiang Zhang, Xiaoyun Liu
Summary: The study shows that land surface aridification in the East Asia summer monsoon transition zone has a significant impact on precipitation. Aridification reduces summer average precipitation, changes precipitation frequency, and hinders precipitation formation by decreasing atmospheric moist static energy. The research provides a foundation for further exploration of how land surface anomalies affect precipitation.
THEORETICAL AND APPLIED CLIMATOLOGY
(2021)