Publications by authors named "Xinyue Ai"
Article Synopsis
- Cities are significant sources of methane emissions, and monitoring their atmospheric concentrations is crucial for understanding human-related emissions, especially since existing observation sites in major emitting cities like China are limited.
- A year-long study in Hangzhou revealed distinct seasonal variations in methane concentrations, with notable differences compared to other cities, highlighting the contributions of both background and enhanced emissions.
- The Random Forest model outperformed other methods in accuracy for simulating methane concentrations, and the largest contributing factor to seasonal variations was temperature-induced increases in microbial emissions from waste treatment and wetlands.
Methane is the second largest anthropogenic greenhouse gas, and changes in atmospheric methane concentrations can reflect the dynamic balance between its emissions and sinks. Therefore, the monitoring of CH concentration changes and the assessment of underlying driving factors can provide scientific basis for the government's policy making and evaluation. China is the world's largest emitter of anthropogenic methane.
View Article and Find Full Text PDFStrict air pollution control measures were conducted during the Youth Olympic Games (YOG) period at Nanjing city and surrounding areas in August 2014. This event provides a unique chance to evaluate the effect of government control measures on regional atmospheric pollution and greenhouse gas emissions. Many previous studies have observed significant reductions of atmospheric pollution species and improvement in air quality, while no study has quantified its synergism on anthropogenic CO emissions, which can be co-reduced with air pollutants.
View Article and Find Full Text PDF