Quantification of COVID-19 impacts on NO2 and O3: Systematic model selection and hyperparameter optimization on AI-based meteorological-normalization methods

YJ Wong, A Yeganeh, MY Chia, HY Shiu… - Atmospheric …, 2023 - Elsevier
Since the unprecedented outbreak of the COVID-19, numerous meteorological-
normalization techniques have been developed in lockdown-imposed regions to decouple …

[HTML][HTML] Increased ozone pollution alongside reduced nitrogen dioxide concentrations during Vienna's first COVID-19 lockdown: Significance for air quality …

M Brancher - Environmental Pollution, 2021 - Elsevier
Background Lockdowns amid the COVID-19 pandemic have offered a real-world opportunity
to better understand air quality responses to previously unseen anthropogenic emission …

Unraveling the O3-NOX-VOCs relationships induced by anomalous ozone in industrial regions during COVID-19 in Shanghai

B Lu, Z Zhang, J Jiang, X Meng, C Liu… - Atmospheric …, 2023 - Elsevier
The COVID-19 pandemic promoted strict restrictions to human activities in China, which led
to an unexpected increase in ozone (O 3) regarding to nitrogen oxides (NOx) and volatile …

Effect of lockdown amid COVID-19 on ambient air quality in 16 Indian cities

AK Mishra, P Rajput, A Singh, CK Singh… - Frontiers in Sustainable …, 2021 - frontiersin.org
The COVID-19 pandemic has affected severely the economic structure and health care
system, among others, of India and the rest of the world. The magnitude of its aftermath is …

Evaluation of NOx emissions before, during, and after the COVID-19 lockdowns in China: A comparison of meteorological normalization methods

Q Wu, T Li, S Zhang, J Fu, BC Seyler, Z Zhou… - Atmospheric …, 2022 - Elsevier
Meteorological normalization refers to the removal of meteorological effects on air pollutant
concentrations for evaluating emission changes. There currently exist various …

Satellite-based estimates of daily NO2 exposure in urban agglomerations of China and application to spatio-temporal characteristics of hotspots

J Dong, X Cai, L Tian, F Chen, Q Xu, T Li… - Atmospheric Environment, 2023 - Elsevier
The analysis of the daily spatial patterns of near-surface Nitrogen dioxide (NO 2)
concentrations can assist decision makers mitigate this common air pollutant in urban areas …

Towards on-site implementation of multi-step air pollutant index prediction in Malaysia industrial area: Comparing the NARX neural network and support vector …

R Mustakim, M Mamat, HT Yew - Atmosphere, 2022 - mdpi.com
Malaysia has experienced public health issues and economic losses due to air pollution
problems. As the air pollution problem keeps increasing over time, studies on air quality …

Untangling the contributions of meteorological conditions and human mobility to tropospheric NO2 in Chinese mainland during the COVID-19 pandemic in early 2020

Y Zhang, H Bo, Z Jiang, Y Wang, Y Fu… - National science …, 2021 - academic.oup.com
In early 2020, unprecedented lockdowns and travel bans were implemented in Chinese
mainland to fight COVID-19, which led to a large reduction in anthropogenic emissions. This …

[HTML][HTML] Aqpet—An R package for air quality policy evaluation

Y Dai, B Liu, C Tong, Z Shi - Environmental Modelling & Software, 2024 - Elsevier
Evaluating the effectiveness of clean air policies is important in the cycle of air quality
management, ensuring policy accountability and informing future policy-making processes …

Particulate Matter Pollution in Urban Cities of India During Unusually Restricted Anthropogenic Activities

R Yadav, P Vyas, P Kumar, LK Sahu… - … in Sustainable Cities, 2022 - frontiersin.org
The outbreak of COVID-19 is a global public health challenge and has affected many
countries, including India. The nationwide lockdown was imposed in India from March 25 to …