Double Trouble of Air Pollution by Anthropogenic Dust

doi:10.1021/acs.est.1c04779

. 2022 Jan 18;56(2):761-769.

doi: 10.1021/acs.est.1c04779. Epub 2021 Dec 23.

Double Trouble of Air Pollution by Anthropogenic Dust

Wenwen Xia¹, Yong Wang¹, Siyu Chen², Jianping Huang², Bin Wang^{1

3}, Guang J Zhang⁴, Yue Zhang², Xiaohong Liu⁵, Jianmin Ma⁶, Peng Gong^{1

7

8}, Yiquan Jiang⁹, Mingxuan Wu¹⁰, Jinkai Xue², Linyi Wei¹, Tinghan Zhang¹¹

Affiliations

¹ Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modeling, Institute for Global Change Studies, Tsinghua University, Beijing 100084, China.
² Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou University, Lanzhou 730000, China.
³ State Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
⁴ Scripps Institution of Oceanography, La Jolla, California 92037, United States.
⁵ Department of Atmospheric Sciences, Texas A&M University, College Station, Texas 77843, United States.
⁶ Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
⁷ Tsinghua Urban Institute, Tsinghua University, Beijing 100084, China.
⁸ Department of Geography and Department of Earth Sciences, University of Hong Kong, Hong Kong, 999077, China.
⁹ CMA-NJU Joint Laboratory for Climate Prediction Studies, Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing 210023, China.
¹⁰ Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.
¹¹ Atmosphere Biosphere Cryosphere Interactions Group, Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, FI-00560 Helsinki, Finland.

PMID: 34941248
DOI: 10.1021/acs.est.1c04779

Free article

Double Trouble of Air Pollution by Anthropogenic Dust

Wenwen Xia et al. Environ Sci Technol. 2022.

Free article

. 2022 Jan 18;56(2):761-769.

doi: 10.1021/acs.est.1c04779. Epub 2021 Dec 23.

Authors

Affiliations

¹ Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modeling, Institute for Global Change Studies, Tsinghua University, Beijing 100084, China.
² Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou University, Lanzhou 730000, China.
³ State Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
⁴ Scripps Institution of Oceanography, La Jolla, California 92037, United States.
⁵ Department of Atmospheric Sciences, Texas A&M University, College Station, Texas 77843, United States.
⁶ Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
⁷ Tsinghua Urban Institute, Tsinghua University, Beijing 100084, China.
⁸ Department of Geography and Department of Earth Sciences, University of Hong Kong, Hong Kong, 999077, China.
⁹ CMA-NJU Joint Laboratory for Climate Prediction Studies, Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing 210023, China.
¹⁰ Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.
¹¹ Atmosphere Biosphere Cryosphere Interactions Group, Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, FI-00560 Helsinki, Finland.

PMID: 34941248
DOI: 10.1021/acs.est.1c04779

Abstract

With urbanization worldwide in recent decades, anthropogenic dust (AD) emissions due to heavy urban construction and off-road vehicle use have been increasing. Its perturbations on urban air pollution at the global scale are still unclear. Based on observations, we found that a high urban AD optical depth is often accompanied by severe non-dust aerosol optical depth in the planetary boundary layer (PBL), both magnitudes even comparable. To investigate the causes, an AD emission inventory constrained by satellite retrievals is implemented in a global climate model. The results show that AD-induced surface radiative cooling of up to -15.9 ± 4.0 W m^-2 regionally leads to reduced PBL height, which deteriorates non-dust pollution, especially over India and northern China, in addition to the tremendous direct AD contribution to pollutants. The estimated global total premature mortality due to AD is 0.8 million deaths per year and is more severe in populous regions.

Keywords: aerosol radiative forcing; air pollution; anthropogenic dust; planetary boundary layer; premature mortality.

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Double Trouble of Air Pollution by Anthropogenic Dust

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