Yuan Wang

TL;DR: The results explain the outstanding sulfur problem during the historic London Fog formation and elucidate the chemical mechanism of severe haze in China, and suggest that effective haze mitigation is achievable by intervening in the sulfate formation process with NH3 and NO2 emission control measures.

TL;DR: It is concluded that wearing of face masks in public corresponds to the most effective means to prevent interhuman transmission, and this inexpensive practice, in conjunction with simultaneous social distancing, quarantine, and contact tracing, represents the most likely fighting opportunity to stop the COVID-19 pandemic.

TL;DR: Air pollutants consist of a complex combination of gases and particulate matter, which is emitted directly into the atmosphere or formed in the atmosphere through gas-to-particle conversion (secondary) (Figure 1).

TL;DR: A comprehensive review of studies on Asian aerosols, monsoons, and their interactions is provided in this article, where a new paradigm is proposed on investigating aerosol-monsoon interactions, in which natural aerosols such as desert dust, black carbon from biomass burning, and biogenic aerosols from vegetation are considered integral components of an intrinsic aerosolmonsoon climate system, subject to external forcing of global warming, anthropogenic aerosol, and land use and change.

TL;DR: Unexpectedly, extreme particulate matter levels simultaneously occurred in northern China, and synergistic observation analyses and model simulations show that anomalously high humidity promoted aerosol heterogeneous chemistry, along with stagnant airflow and uninterrupted emissions from power plants and petrochemical facilities, contributing to severe haze formation.