Impacts of reducing scattering and absorbing aerosols on the temporal extent and intensity of South Asian summer monsoon and East Asian summer monsoon

Fang, Chenwei; Haywood, Jim M.; Liang, Ju; Johnson, Ben T.; Chen, Ying; Zhu, Bin

doi:https://doi.org/10.5194/acp-23-8341-2023

Articles | Volume 23, issue 14

https://doi.org/10.5194/acp-23-8341-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-8341-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 14

Research article

|

26 Jul 2023

Research article |

| 26 Jul 2023

Impacts of reducing scattering and absorbing aerosols on the temporal extent and intensity of South Asian summer monsoon and East Asian summer monsoon

Chenwei Fang, Jim M. Haywood, Ju Liang, Ben T. Johnson, Ying Chen, and Bin Zhu

Supplement

https://doi.org/10.5194/acp-23-8341-2023-supplement

Data sets

Climate Prediction Center (CPC) unified gauge-based daily observations M. Chen, W. Shi, P. Xie, V. B. S. Silva, V. E. Kousky, R. W. Higgins, and J. E. Janowiak https://psl.noaa.gov/data/gridded/data.cpc.globalprecip.html

Global Precipitation Climatology Project (GPCP) rain gauge-satellite combined precipitation dataset G. J. Huffman and D. T. Bolvin https://www.ncei.noaa.gov/data/global-precipitation-climatology-project-gpcp-daily/access/

ERA5 hourly data on single levels from 1940 to present H. Hersbach, B. Bell, P. Berrisford, S. Hirahara, A. Horányi, J. Muñoz‐Sabater, J. Nicolas, C. Peubey, R. Radu, D. Schepers, A. Simmons, C. Soci, S. Abdalla, X. Abellan, G. Balsamo, P. Bechtold, G. Biavati, J. Bidlot, M. Bonavita, G. De Chiara, P. Dahlgren, D. Dee, M. Diamantakis, R. Dragani, J. Flemming, R. Forbes, M. Fuentes, A. Geer, L. Haimberger, S. Healy, R. J. Hogan, E. Hólm, M. Janisková, S. Keeley, P. Laloyaux, P. Lopez, C. Lupu, G. Radnoti, P. de Rosnay, I. Rozum, F. Vamborg, S. Villaume, and J. N. Thépaut https://doi.org/10.24381/cds.adbb2d47

CMIP6 historical simulations from the UK Earth System Model version 1 (UKESM1) Climate modeling groups of the World Climate Research Programme http://esgf-node.llnl.gov/search/cmip6/

MOHC UKESM1.0-LL model output prepared for CMIP6 CMIP historical Yongming Tang, Steve Rumbold, Rich Ellis, Douglas Kelley, Jane Mulcahy, Alistair Sellar, Jeremy Walton, and Colin Jones https://doi.org/10.22033/ESGF/CMIP6.6113

ERA5 monthly averaged data on pressure levels from 1940 to present H. Hersbach, B. Bell, P. Berrisford, S. Hirahara, A. Horányi, J. Muñoz‐Sabater, J. Nicolas, C. Peubey, R. Radu, D. Schepers, A. Simmons, C. Soci, S. Abdalla, X. Abellan, G. Balsamo, P. Bechtold, G. Biavati, J. Bidlot, M. Bonavita, G. De Chiara, P. Dahlgren, D. Dee, M. Diamantakis, R. Dragani, J. Flemming, R. Forbes, M. Fuentes, A. Geer, L. Haimberger, S. Healy, R. J. Hogan, E. Hólm, M. Janisková, S. Keeley, P. Laloyaux, P. Lopez, C. Lupu, G. Radnoti, P. de Rosnay, I. Rozum, F. Vamborg, S. Villaume, and J. N. Thépaut https://doi.org/10.24381/cds.6860a573

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Short summary

The responses of Asian summer monsoon duration and intensity to air pollution mitigation are identified given the net-zero future. We show that reducing scattering aerosols makes the rainy season longer and stronger across South Asia and East Asia but that absorbing aerosol reduction has the opposite effect. Our results hint at distinct monsoon responses to emission controls that target different aerosols.