Mechanisms behind the phenomenon of Arctic amplification are widely discussed. To
contribute to this debate, the (AC) 3 project was established in 2016 (www. ac3-tr. de/). It …

Remarkable perturbations in the stratospheric abundances of chlorine species and ozone
were observed over Southern Hemisphere mid-latitudes following the 2020 Australian …

High-intensity wildland fires can produce extreme flaming and smoke emissions that
develop into a fire-cloud chimney, reaching into the upper troposphere or lower …

Abstract The Aerosol, Clouds and Trace Gases Research Infrastructure (ACTRIS) officially
became the 33rd European Research Infrastructure Consortium (ERIC) on 25 April 2023 …

Global mean lower stratosphere temperatures rose abruptly in January 2020 reaching
values not experienced since the early 1990s. Anomalously high lower stratospheric …

This paper presents a collection of lidar-derived aerosol intensive optical properties for
several aerosol types, namely the particle linear depolarization ratio, the extinction-to …

The Arctic environment is rapidly changing due to accelerated warming in the region. The
warming trend is driving a decline in sea ice extent, which thereby enhances feedback loops …

Infrared aerosol spectra derived from Atmospheric Chemistry Experiment measurements
following the June 2019 Raikoke volcanic eruption are used to evaluate the composition of …

Stratospheric aerosol, temperature, and ozone anomalies after the 2020 Australian
bushfires are documented from satellite observations. Aerosol extinction is enhanced in the …

Record-breaking wildfires raged in southeastern Australia in late December 2019 and early
January 2020. Rather strong pyrocumulonimbus (pyroCb) convection developed over the …