@article{a42cb6f6e5114b388f773515d4bef58d,
title = "A Model Investigation of Aerosol-Induced Changes in the East Asian Winter Monsoon",
abstract = "The response of the East Asian winter monsoon (EAWM) circulation to aerosols is studied using a coupled atmosphere-slab ocean general circulation model. In the extratropics, the aerosol-induced cooling in the midlatitudes leads to an intensified subtropical jet stream, a deepened East Asian trough, and thus an enhanced EAWM. In the tropics, the local Hadley circulation shifts southward to compensate for the interhemispheric asymmetry in aerosol radiative cooling. Anomalous subsidence at around 10°N leads to a salient anticyclone to the southwest of the Philippines. The associated southwesterlies advect abundant moisture to South China, resulting in local precipitation increases and suggesting a weaker EAWM. The EAWM response to aerosol forcing is thus driven by a competition between tropical and extratropical mechanisms, which has important implications for the future monsoon evolution, as aerosol changes may follow different regional-dependent trajectories.",
keywords = "East Asian winter monsoon, aerosol",
author = "Zhen Liu and Yi Ming and Lin Wang and Massimo Bollasina and Ming Luo and Lau, {Ngar Cheung} and Yim, {Steve Hung Lam}",
note = "Funding Information: We thank the two anonymous reviewers whose insightful comments lead to a significant improvement of the manuscript. This work is jointly supported by the Early Career Scheme of Research Grants Council of Hong Kong (Grant CUHK24301415), the National Key Basic Research Program of China (Grant 2015CB954103), the Improvement on Competitiveness in Hiring New Faculties Fund (2013/2014) of The Chinese University of Hong Kong (Grant 4930059), and the Vice-Chancellor's Discretionary Fund of The Chinese University of Hong Kong (Grant 4930744). The appointment of NCL at CUHK is supported by the AXA Research Fund. We would also like to acknowledge Met Office Climate Science for Service Partnership China as part of the Newton Fund for supporting Zhen Liu and Massimo A. Bollasina on the paper revision effort. Ming Luo is supported by the National Natural Science Foundation of China (Grant 41871029). Lin Wang is supported by the Chinese Academy of Sciences (Grant QYZDY-SSW-DQC024). Zhen Liu acknowledges the Global Scholarship Program for Research Excellence 2017–2018 at The Chinese University of Hong Kong to support his exchange visit to Princeton University. The model simulations are conducted on the Gaia computer at NOAA GFDL, and the results are archived at GFDL. The GPCP data sets for precipitation are available online (from the website https://www.esrl.noaa.gov/psd/data/gridded/data.gpcp.html). The JRA-55 reanalysis product for wind is provided by the Japan Meteorological Agency (https://rda.ucar.edu/datasets/ds628.1/). Publisher Copyright: {\textcopyright}2019. American Geophysical Union. All Rights Reserved.",
year = "2019",
month = aug,
day = "28",
doi = "10.1029/2019GL084228",
language = "English (US)",
volume = "46",
pages = "10186--10195",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "16",
}