It has been shown that sunlit snow and ice plays an important role in processing
atmospheric species. Photochemical production of a variety of chemicals has recently been …

The presence of snow greatly perturbs the composition of near-surface polar air, and the
higher concentrations of hydroxyl radicals (OH) observed result in a greater oxidative …

During springtime in the polar regions, unique photochemistry converts inert halide salt ions
(eg Br−) into reactive halogen species (eg Br atoms and BrO) that deplete ozone in the …

The role of ice in the formation of chemically active halogens in the environment requires a
full understanding because of its role in atmospheric chemistry, including controlling the …

While particles have significant deleterious impacts on human health, visibility and climate,
quantitative understanding of their formation, composition and fates remains problematic …

We use observations from the April 2008 NASA ARCTAS aircraft campaign to the North
American Arctic, interpreted with a global 3-D chemical transport model (GEOS-Chem), to …

The physical, chemical, and biological processes involving organics in ice in the
environment impact a number of atmospheric and biogeochemical cycles. Organic material …

Hydrogen peroxide (HOOH) in ice and snow is an important chemical tracer for the oxidative
capacities of past atmospheres. However, photolysis in ice and snow will destroy HOOH and …

Laser-induced fluorescence detection was used to measure photolysis rates of anthracene
and naphthalene at the air− ice interface, and the kinetics were compared to those observed …

There are few long-term datasets of volatile organic compounds (VOCs) in the High Arctic.
Furthermore, knowledge about their source regions remains lacking. To address this matter …