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Trends and drivers of anthropogenic NOx emissions in China since 2020 [PDF]

Environmental Science and Ecotechnology
Nitrogen oxides (NOx), significant contributors to air pollution and climate change, form aerosols and ozone in the atmosphere. Accurate, timely, and transparent information on NOx emissions is essential for decision-making to mitigate both haze and ...
Hui Li, Bo Zheng, Yu Lei, Didier Hauglustaine, Cuihong Chen, Xin Lin, Yi Zhang, Qiang Zhang, Kebin He   +8 more
doaj   +3 more sources

Impacts of the COVID-19 event on the NOx emissions of key polluting enterprises in China [PDF]

Applied Energy, 2021
Highlights • Real-time observations were used to analyze impact of COVID-19 on NOx emission.• The impact in China is mainly concentrated in four industrial sectors.• Operating vent numbers and emission concentration are effective indicators.• COVID-19 ...
Bofeng Cai, Zhen Wang, Song Hong
exaly   +3 more sources

Research on NOx Emissions Testing and Optimization Strategies for Diesel Engines Under Low-Load Cycles

Atmosphere
Under low-load cycles (LLCs), the issue of high NOx emissions from diesel engines is attracting widespread attention. Through a combination of experimental and simulation approaches, the NOx emission behavior under LLC conditions was investigated ...
Wei Haiqiao, Tengteng Li
exaly   +3 more sources

NOx Emission of a Correlation between the PEMS and SEMS over Different Test Modes and Real Driving Emission

Energies, 2021
The aim of this study is to verify the reliability of NOx emissions measured using Smart Emissions Measurement System (SEMS) equipment in comparison with the NOx emissions measured using certified Portable Emissions Measurement System (PEMS) equipment ...
Young Soo Yu, Jun Woo Jeong, Mun Soo Chon, Junepyo Cha   +3 more
doaj   +1 more source

NOx emissions in India derived from OMI satellite observations

Atmospheric Environment: X, 2022
The fast industrialization and urbanization in India lead to serious air quality problems. Using the long record of the satellite observations of NO2 from the Ozone Monitoring Instrument, we have derived monthly NOx emissions over India from 2007 to 2018
Jieying Ding, Ronald van der A, Bas Mijling, Jos de Laat, Henk Eskes, K. Folkert Boersma   +5 more
doaj   +1 more source

New Urbanization, Energy-Intensive Industries Agglomeration and Analysis of Nitrogen Oxides Emissions Reduction Mechanisms

Atmosphere, 2021
With the deepening of urbanization and industrialization, as well as the exacerbation of energy consumption, China is facing a severe situation in which nitrogen oxide (NOx) emissions reduction is imperative.
Yang Yu, Tianchang Wang
doaj   +1 more source

Modeling and Predicting Heavy-Duty Vehicle Engine-Out and Tailpipe Nitrogen Oxide (NOx) Emissions Using Deep Learning

Frontiers in Mechanical Engineering, 2022
As emissions regulations for transportation become stricter, it is increasingly important to develop accurate nitrogen oxide (NOx) emissions models for heavy-duty vehicles.
Rinav Pillai, Vassilis Triantopoulos, Vassilis Triantopoulos, Albert S. Berahas, Matthew Brusstar, Ruonan Sun, Tim Nevius, André L. Boehman   +7 more
doaj   +1 more source

Assessment of Heavy-Duty Diesel Vehicle NOx and CO₂ Emissions Based on OBD Data

Atmosphere, 2023
Controlling NOx and CO2 emissions from heavy-duty diesel vehicles (HDDVs) is receiving increasing attention. Accurate measurement of HDDV NOx and CO2 emissions is the prerequisite for HDDV emission control.
Lijun Hao, Yanxu Ren, Wenhui Lu, Nan Jiang, Yunshan Ge, Yachao Wang   +5 more
doaj   +1 more source

Changes in PM2.5 sensitivity to NOx and NH3 emissions due to a large decrease in SO2 emissions from 2013 to 2018

Atmospheric and Oceanic Science Letters, 2020
The authors evaluated and compared the behavior of PM2.5 with respect to NOx and NH3 emission changes in high (the year 2013) and low (the year 2018) SO2 emission cases. Two groups of simulations were conducted based on anthropogenic emissions from China
Guangyi XU, Qianqian ZHANG, Yu YAO, Xingying ZHANG   +3 more
doaj   +1 more source

Experimental Analysis for Nitrogen Oxide Reduction in a Diesel Engine by the Hydrogen-Assisted Selective Catalytic Reduction Technique

Advances in Materials Science and Engineering, 2023
Diesel engine emissions pose a serious threat to the environment and cause inevitable hazards to the atmosphere. The technique that is used to control and combat nitrogen oxide (NOX) emissions is selective catalytic reduction.
S. Mathavan, G. Nagarajan, Sivaraj Murugan   +2 more
doaj   +1 more source