The physical state of a material is described as its phase. Common phases of the molecule
H2O include vapor, liquid water, and ice. Examples of these phases in the atmosphere are …

Considerable interest in the interactions of trace gases with ice surfaces has only developed
of late, in large part prompted by the discovery of the Antarctic Ozone Hole and the …

This paper reviews experimental and theoretical work on the nonreactive uptake of acidic
trace gases such as HCl, HNO3, HBr, HONO, and SO2 on ice. The focus is on work …

Recent measurements have demonstrated that sunlight irradiation of snow results in the
release of significant amounts of gas phase NOx (NO+ NO2). We report here the results of a …

The investigation of the impact of aircraft parameters on contrail properties helps to better
understand the climate impact from aviation. Yet, in observations, it is a challenge to …

Ice particles found within polar stratospheric clouds (PSCs) and upper tropospheric cirrus
clouds can dramatically impact the chemistry and climate of the Earth's atmosphere. The …

A model of atmospheric photochemistry and transport has been developed and applied
toward investigating global tropospheric chemistry. The Model of Atmospheric Transport and …

The study of environmental interfaces and environmental catalysis is central to finding more
effective solutions to air pollution and in understanding of how pollution impacts the natural …

In situ measurements of the relative humidity with respect to ice (RHi) and of nitric acid
(HNO3) were made in both natural and contrail cirrus clouds in the upper troposphere. At …

The redistribution of HNO3 via uptake and sedimentation by cirrus cloud particles is
considered an important term in the upper tropospheric budget of reactive nitrogen …