The Unintended Consequences of Sulfate Aerosols in the Troposphere and Lower Stratosphere

In situ detection of electrified aerosols in the upper troposphere and stratosphere

Electrified aerosols have been observed in the lower troposphere and in the mesosphere, but have never been detected in the stratosphere and upper troposphere. We present measurements of aerosols obtained during a balloon flight to an altitude of∼ 24 km. The measurements were performed with an improved version of the Stratospheric and Tropospheric Aerosol Counter (STAC) aerosol counter dedicate...

The Encyclopedia of Volcanoes

aerosol Any suspended particle in the atmosphere. An aerosol can be a liquid droplet, such as sulfuric acid, or a solid, such as ash or tephra. Arctic Oscillation A strengthening or weakening of the polar vortex in the Northern Hemisphere, the main pattern of oscillation of winter variation of extratropical atmospheric circulation. For a positive mode, with a strong vortex, winter temperatures ...

Interactive comment on “Potential impact of carbonaceous aerosols on the Upper Troposphere and Lower Stratosphere (UTLS) during Asian summer monsoon in a global model simulation” by Suvarna Fadnavis et al

Stratospheric dynamics and midlatitude jets under geoengineering with space mirrors and sulfate and titania aerosols

The impact on the dynamics of the stratosphere of three approaches to geoengineering by solar radiation management is investigated using idealized simulations of a global climate model. The approaches are geoengineering with sulfate aerosols, titania aerosols, and reduction in total solar irradiance (representing mirrors placed in space). If it were possible to use stratospheric aerosols to cou...

Ultraviolet Radiation in the Arctic: The Impact of Potential Ozone Depletions and Cloud Effects

An atmospheric radiation model is used to study the combined effects of ozone depletions/redistributions and particulate clouds on atmospheric heating/photolysis rates and ultraviolet radiation reaching the biosphere. Four types of particulate clouds prevalent in the summertime Arctic are considered: stratospheric aerosols, tropospheric aerosols (Arctic haze), cirrus clouds, and stratus clouds....