High concentrations of ozone in urban and industrial regions worldwide have long been a
major air quality issue. With the rapid increase in fossil fuel consumption in China over the …

Multiphase chemistry plays a vital role in the Earth system, climate, and health. Chemical
reactions, mass transport, and phase transitions between gases, liquids, and solids are …

Gaseous nitrous acid (HONO) is a critical source of hydroxyl radicals (OH) in the
troposphere. While both direct and secondary sources contribute to atmospheric HONO …

Hydroxyl radicals (OH) are a key species in atmospheric photochemistry. In the lower
atmosphere, up to~ 30% of the primary OH radical production is attributed to the photolysis …

Conspectus Atmospheric aerosols and fine particulate matter (PM2. 5) are strongly affecting
human health and climate in the Anthropocene, that is, in the current era of globally …

We analyzed the measurements of ozone (O 3) and its precursors made at rural/suburban
sites downwind of four large Chinese cities–Bei**g, Shanghai, Guangzhou and Lanzhou, to …

As nitrous acid (HONO) photolysis is an important source of hydroxyl radical (OH),
apportionment of the ambient HONO sources is necessary to better understand atmospheric …

Soot particles produced by incomplete combustion processes are one of the major
components of urban air pollution. Chemistry at their surfaces lead to the heterogeneous …

Nitrous acid (HONO) is the major precursor of hydroxyl (OH) radicals to initiate tropospheric
chemistry leading to formation of secondary pollutants. The sources of atmospheric HONO …

Atmospheric nitrous acid (HONO) chemistry is of critical importance to air quality during
polluted haze events, especially in China. However, current air quality models (such as WRF …