A small subset of the atmospheric aerosol population has the ability to induce ice formation
at conditions under which ice would not form without them (heterogeneous ice nucleation) …

Black carbon aerosol plays a unique and important role in Earth's climate system. Black
carbon is a type of carbonaceous material with a unique combination of physical properties …

The budget of reactive nitrogen (Nr; oxidized and reduced inorganic and organic forms of
nitrogen) has at least doubled since the preindustrial era due to human activities. Excess Nr …

The formation mechanism of aerosol sulfate during wintertime haze events in China is still
largely unknown. As companions, SO2 and transition metals are mainly emitted from coal …

Ice particle formation in tropospheric clouds significantly changes cloud radiative and
microphysical properties. Ice nucleation in the troposphere via homogeneous freezing …

Freshman chemistry teaches that Fe3+ and Cu2+ ions are stable in water solutions, but their
reduced forms, Fe2+ and Cu+, cannot exist in water as the major oxidation state due to the …

This study provides evidence of substantial increases in atmospheric ammonia (NH3)
concentrations (14 year) over several of the worlds major agricultural regions, using recently …

Formation of cirrus clouds depends on the availability of ice nuclei to begin condensation of
atmospheric water vapor. Although it is known that only a small fraction of atmospheric …

Motivated by the need to predict how the Arctic atmosphere will change in a warming world,
this article summarizes recent advances made by the research consortium NETCARE …

Studies of the structure of supported water clusters provide a means for obtaining a rigorous
molecular-scale description of the initial stages of heterogeneous ice nucleation: a process …