Photochemical Oxidant Processes in the Presence of Dust: An Evaluation of the Impact of Dust on Particulate Nitrate and Ozone Formation

Variations in the size distribution of non‐sea‐salt sulfate aerosol in the marine boundary layer at Barbados: Impact of African dust

“…Therefore, we would expect that it is probably safe to generalize our results to dust events over the tropical North Atlantic during the late spring, summer, and early fall, a period that encompasses much of the annual cycle of active dust transport out of north Africa into the North Atlantic [Husar et al, 1997; Herman et al, 1997]. Although we can not safely extend our results to dust from other source regions, we might expect that the same heterogeneous processes might well be operative; indeed, similar processes are suggested for air masses emerging from the east coast of Asia [Zhang et al, 1994]. …”

The concentration, source and deposition flux of ammonium and nitrate in atmospheric particles during dust events at a coastal site in northern China

“…Many modeling studies have shown that the gas-aerosol thermodynamic equilibrium is assumed to be fully attained for inorganic ions, including ammonium salts in PM 2.5 (Dentener et al, 1996;Underwood et al, 2001; Z. Zhang et al, 1994;Zhang and Carmichael, 1999). Reasonably good agreements between ammonium salt modeling results and observations reported in the literature support the validity of this assumption Penrod et al, 2014;Walker Yulin, the north edge of Loess Plateau 216.4 80.6…”

In situ DRIFTS study of hygroscopic behavior of mineral aerosol

“…Mineral aerosols play an important role in the global climate change by absorbing and scattering solar radiation as well as acting as cloud condensation nucleus, which is the major uncertainty for future climate change prediction (IPCC, 2007). Modeling, field observations and laboratory study suggest that mineral aerosol could act as a reactive surface with trace atmospheric gases, thus, influencing the trace atmospheric gas budget through heterogeneous reactions (Zhang et al, 1994;Dentener et al, 1996;Usher et al, 2003), and aerosol water content has been reported to affect the uptake rate of reactive gases (Liu et al, 2009). Therefore, measurements of hygroscopic growth and associated water content are necessary to understand the radiative and chemical effects of tropospheric aerosol species.…”