Metals from spacecraft reentry in stratospheric aerosol particles.

Large increases in the number of low earth orbit satellites are projected in the coming decades [L. Schulz, K.-H.

A biogenic secondary organic aerosol source of cirrus ice nucleating particles.

Atmospheric ice nucleating particles (INPs) influence global climate by altering cloud formation, lifetime, and precipitation efficiency. The role of secondary organic aerosol (SOA) material as a source of INPs in the ambient atmosphere has not been well defined. Here, we demonstrate the potential for biogenic SOA to activate as depositional INPs in the upper troposphere by combining field measurements with laboratory experiments.

Unanticipated Side Effects of Stratospheric Albedo Modification Proposals Due to Aerosol Composition and Phase.

The Earth has now warmed ~1.0 °C since the period 1850-1900, due in large part to the anthropogenic addition of greenhouse gases to the atmosphere. Most strategies to address this warming have called for a reduction of emissions and, often, accompanying removal of greenhouse gases.

Investigating the Heterogeneous Ice Nucleation of Sea Spray Aerosols Using Prochlorococcus as a Model Source of Marine Organic Matter.

Sea spray is the largest aerosol source on Earth. Bubble bursting mechanisms at the ocean surface create smaller film burst and larger jet drop particles. This study quantified the effects of particle chemistry on the depositional ice nucleation efficiency of laboratory-generated sea spray aerosols under the cirrus-relevant conditions.