Spatiotemporal variations and reduction of air pollutants during the COVID-19 pandemic in a megacity of Yangtze River Delta in China

Q Yuan, B Qi, D Hu, J Wang, J Zhang, H Yang… - Science of the Total …, 2021 - Elsevier
In recent decades, air pollution has become an important environmental problem in the
megacities of eastern China. How to control air pollution in megacities is still a challenging …

[HTML][HTML] Field evaluation of low-cost PM sensors (Purple Air PA-II) under variable urban air quality conditions, in Greece

I Stavroulas, G Grivas, P Michalopoulos, E Liakakou… - Atmosphere, 2020 - mdpi.com
Recent advances in particle sensor technologies have led to an increased development and
utilization of low-cost, compact, particulate matter (PM) monitors. These devices can be …

Characteristics and sources of volatile organic compounds (VOCs) in Shanghai during summer: Implications of regional transport

Y Liu, H Wang, S Jing, Y Gao, Y Peng, S Lou… - Atmospheric …, 2019 - Elsevier
Intensive field measurements were carried out in urban Shanghai between 20 th and 30 th
of May 2017, and the VOC characteristics and sources were investigated with a focus on the …

[HTML][HTML] Real-time measurement and source apportionment of elements in Delhi's atmosphere

P Rai, M Furger, I El Haddad, V Kumar, L Wang… - Science of the Total …, 2020 - Elsevier
Delhi, the capital of India, suffers from heavy local emissions as well as regional transport of
air pollutants, resulting in severe aerosol loadings. To determine the sources of these …

[HTML][HTML] Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols

V Moschos, K Dzepina, D Bhattu, H Lamkaddam… - Nature …, 2022 - nature.com
Aerosols play an important yet uncertain role in modulating the radiation balance of the
sensitive Arctic atmosphere. Organic aerosol is one of the most abundant, yet least …

Chemistry of atmospheric fine particles during the COVID‐19 pandemic in a megacity of eastern China

L Liu, J Zhang, R Du, X Teng, R Hu… - Geophysical …, 2021 - Wiley Online Library
Air pollution in megacities represents one of the greatest environmental challenges. Our
observed results show that the dramatic NOx decrease (77%) led to significant O3 increases …

[HTML][HTML] Impact of air pollution control measures and regional transport on carbonaceous aerosols in fine particulate matter in urban Beijing, China: insights gained …

D Ji, W Gao, W Maenhaut, J He, Z Wang… - Atmospheric …, 2019 - acp.copernicus.org
As major chemical components of airborne fine particulate matter (PM 2.5), organic carbon
(OC) and elemental carbon (EC) have vital impacts on air quality, climate change, and …

Efficient heterogeneous formation of ammonium nitrate on the saline mineral particle surface in the atmosphere of East Asia during dust storm periods

C Wu, S Zhang, G Wang, S Lv, D Li, L Liu… - … science & technology, 2020 - ACS Publications
To understand the chemical evolution of dust in the current East Asian atmosphere, the
chemistry of PM2. 5 and size-resolved aerosols in Shanghai, China, during the 2019 dust …

Seasonal light absorption properties of water-soluble brown carbon in atmospheric fine particles in Nanjing, China

Y Chen, X Ge, H Chen, X Xie, Y Chen, J Wang… - Atmospheric …, 2018 - Elsevier
Recently atmospheric brown carbon (BrC) is recognized as an important contributor to light
absorption and positive climate forcing. In this work, daily fine particulate matter (PM 2.5) …

[HTML][HTML] Insight into PM2.5 Sources by Applying Positive Matrix Factorization (PMF) at an Urban and Rural Site of Beijing

D Srivastava, J Xu, TV Vu, D Liu, L Li… - Atmospheric …, 2021 - acp.copernicus.org
This study presents the source apportionment of PM 2.5 performed by PMF on data collected
at an urban (Institute of Atmospheric Physics–IAP) and a rural site (Pinggu-PG) in Beijing as …