Polar stratospheric clouds (PSCs) play important roles in stratospheric ozone depletion
during winter and spring at high latitudes (eg, the Antarctic ozone hole). PSC particles …

Aerosols are of central importance for atmospheric chemistry and physics, the biosphere,
climate, and public health. The airborne solid and liquid particles in the nanometer to …

The upper troposphere/lower stratosphere (UTLS) region plays an important role in the
climate system. Changes in the structure and chemical composition of this region result in …

Abstract The Midlatitude Cirrus experiment (ML-CIRRUS) deployed the High Altitude and
Long Range Research Aircraft (HALO) to obtain new insights into nucleation, life cycle, and …

A PSC was detected on 6 February 2003 in the Arctic stratosphere by in-situ measurements
onboard the high-altitude research aircraft Geophysica. Low number densities (~ 10-4 cm-3) …

The solid and liquid particles which constitute polar stratospheric clouds (PSCs) are of
manifold importance to the meteorology of the stratosphere. The heterogeneous reactions …

The Halogen Occultation Experiment (HALOE) on board the Upper Atmosphere Research
Satellite (UARS) has observed mixing ratios of important trace species in the stratosphere …

Two recent satellite instruments, the Microwave Limb Sounder (MLS) on Aura and the
Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE‐FTS) on SCISAT …

During the second part of the TROCCINOX campaign that took place in Brazil in early 2005,
chemical species were measured on-board the high-altitude research aircraft Geophysica …

Variations in the mixing ratio of trace gases of tropospheric origin entering the stratosphere
in the tropics are of interest for assessing both troposphere to stratosphere transport fluxes in …