
Critical supply chains of NOx emissions in the Beijing-Tianjin …
2022年8月15日 · The results indicate that Tangshan and Beijing are BTH cities with the highest production- and consumption-based NO x emissions, respectively. The electricity and heat, …
Oxidation and sources of atmospheric NOx during winter in Beijing …
2021年5月1日 · Vehicular exhaust dominated the wintertime NO x emissions in Beijing. The determination of both stable nitrogen (δ 15 N–NO 3-) and stable oxygen (δ 18 O–NO 3-) …
ACP - Improving NOx emission estimates in Beijing using network ...
2022年7月5日 · In addition to spatial disparities, emissions from individual source sectors also showed different patterns. In Beijing, for example, vehicle emission control contributed the …
Nonlinear effect of NOx concentration decrease on secondary …
2024年2月20日 · During the COVID-19 lockdown in the Beijing-Tianjin-Hebei (BTH) region in China, large decrease in nitrogen oxides (NOx) emissions, especially in the transportation …
Retrieving tropospheric NO2 vertical column densities around the city ...
The tropospheric vertical column densities (VCDs) of NO2 were retrieved from measured spectra by the MAX-DOAS technique and used to estimate the emissions of NOx (≡NO+NO2) from …
Increased night-time oxidation over China despite widespread
2023年1月26日 · Accelerated night-time oxidation has shortened the lifetime of summer NO x in China by 30% during 2014–2019. This change will strongly affect ozone formation and has …
Combined short-term and long-term emission controls improve …
2024年6月17日 · Long-term adherence to strict emission reduction policies led to successful decreases of 54% in PM 2.5 concentrations in Beijing, and 23% in atmospheric nitrogen …
Chinese industrial air pollution emissions based on the continuous ...
2023年3月22日 · As the world’s largest industrial producer, China has generated large amount of industrial atmospheric pollution, particularly for particulate matter (PM), SO2 and NOx emissions.
We have developed a new approach that updates a priori emission estimates by source sector, which are particularly relevant for policy interventions. At its core is a perturbed emissions …
NOx Emission Flux Measurements with Multiple Mobile-DOAS …
NOX (NOX = NO + NO2) emissions measurements in Beijing are of great significance because they can aid in understanding how NOX pollution develops in mega-cities throughout China. …