The impact of COVID 19 on air pollution levels and other environmental indicators-A case study of Egypt

MK Mostafa, G Gamal, A Wafiq - Journal of environmental management, 2021 - Elsevier
The outbreak of coronavirus disease (COVID-19) not only affected health and economics,
but also its effect extended to include other aspects, such as the environment. Using Egypt …

Photocatalytic NO x abatement: why the selectivity matters

JZ Bloh, A Folli, DE Macphee - RSC advances, 2014 - pubs.rsc.org
Titanium dioxide photocatalysis offers an excellent way to oxidise NOx to nitrate and thus
reduce air pollution. However, unmodified titanium dioxide also releases a significant …

Urban air quality simulation in a high-rise building area using a CFD model coupled with mesoscale meteorological and chemistry-transport models

KH Kwak, JJ Baik, YH Ryu, SH Lee - Atmospheric Environment, 2015 - Elsevier
An integrated urban air quality modeling system is established by coupling a computational
fluid dynamics (CFD) model with mesoscale meteorological and chemistry-transport models …

Spatial and temporal distribution of NO2 and SO2 in Inner Mongolia urban agglomeration obtained from satellite remote sensing and ground observations

C Zheng, C Zhao, Y Li, X Wu, K Zhang, J Gao… - Atmospheric …, 2018 - Elsevier
Nitrogen dioxide (NO 2) and sulfur dioxide (SO 2) are important pollution gases which can
affect air quality, human health and even climate change. Based on the combination of …

[HTML][HTML] Identification of NO2 and SO2 Pollution Hotspots and Sources in Jiangsu Province of China

Y Wang, MA Ali, M Bilal, Z Qiu, A Mhawish… - Remote Sensing, 2021 - mdpi.com
Nitrogen dioxide (NO2) and sulfur dioxide (SO2) are important atmospheric trace gases for
determining air quality, human health, climate change, and ecological conditions both …

On-road measurements of vehicle NO2/NOx emission ratios in Denver, Colorado, USA

RJ Wild, WP Dubé, KC Aikin, SJ Eilerman… - Atmospheric …, 2017 - Elsevier
Nitrogen oxides (NO x= NO+ NO 2) emitted by on-road combustion engines are important
contributors to tropospheric ozone production. The NO x fraction emitted as nitrogen dioxide …

[HTML][HTML] The impact of urban characteristics and residents' income on commuting in China

Z Zhu, Z Li, Y Liu, H Chen, J Zeng - Transportation research part D …, 2017 - Elsevier
This study examined the relationship between urban characteristics and residents'
commuting behaviour using sample survey data from 106 cities in China. We found that the …

Reduction in NOx Emission Trends over China: Regional and Seasonal Variations

D Gu, Y Wang, C Smeltzer, Z Liu - Environmental science & …, 2013 - ACS Publications
We analyzed satellite observations of nitrogen dioxide (NO2) columns by the Ozone
Monitoring Instrument (OMI) over China from 2005 to 2010 in order to estimate the top-down …

COVID-2019 lockdown in Beijing: A rare opportunity to analyze the contribution rate of road traffic to air pollutants

Y Xin, S Shao, Z Wang, Z Xu, H Li - Sustainable Cities and Society, 2021 - Elsevier
In Beijing, the lockdown imposed to curb the spread of COVID-2019 has led to a sharp drop
in road traffic. This provides an opportunity to quantify the contribution rate of road traffic to …

Detrended cross-correlation analysis of urban traffic congestion and NO2 concentrations in Chengdu

K Shi, B Di, K Zhang, C Feng, L Svirchev - Transportation Research Part D …, 2018 - Elsevier
In urban congested road sections, usually there exhibits elevated exhaust emissions due to
longer idling and more frequent acceleration of vehicles. Using detrended cross-correlation …