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Glycine in aerosol water droplets: a critical assessment of Köhler theory by predicting surface tension from molecular dynamics simulations
Glycine aerosol water Kö hler theory surface tension molecular dynamics simulations
2011/1/20
Aerosol particles in the atmosphere are important participants in the formation of cloud droplets and have significant impact on cloud albedo and global climate. According to the Köhler theory wh...
Heterogeneous freezing of droplets with immersed mineral dust particles – measurements and parameterization
droplets immersed mineral dust particles measurements parameterization
2010/8/12
During the measurement campaign FROST (FReezing Of duST), LACIS (Leipzig Aerosol Cloud Interaction Simulator) was used to investigate the immersion freezing behavior of size selected, coated and uncoa...
Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
electric charge supercooled droplets
2010/2/21
In these experiments, the electric charge carried by single particles ejected from the surface of a graupel particle growing by riming was measured. Simulated graupel pellets were grown by accretion o...
Size-dependent activation of aerosols into cloud droplets at a subarctic background site during the second Pallas Cloud Experiment (2nd PaCE): method development and data evaluation
Size-dependent activation cloud droplets subarctic background site
2009/7/23
In situ measurements of aerosol water uptake and activation of aerosols into cloud droplets provide information on how aerosols influence the microphysical properties of clouds. Here we present a comp...
Freezing of water droplets colliding with kaolinite particles
water droplets colliding kaolinite particles
2009/7/15
Contact freezing of single supercooled water droplets colliding with kaolinite dust particles has been investigated. The experiments were performed with droplets levitated in an electrodynamic balance...
Actinic flux and photolysis in water droplets：Mie calculations and geometrical optics limit
Actinic flux photolysis water droplets Mie calculations geometrical optics limit
2009/3/9
Photolysis of water-soluble components inside cloud droplets by ultraviolet/visible radiation may play an important role in atmospheric chemistry. Two earlier studies have suggested that the actinic f...
Heterogeneous freezing of single sulfuric acid solution droplets: laboratory experiments utilizing an acoustic levitator
Heterogeneous freezing single sulfuric acid solution droplets laboratory experiments acoustic levitator
2009/3/6
The heterogeneous freezing temperatures of single binary sulfuric acid solution droplets were measured in dependency of acid concentration down to temperatures as low as -50°C. In order to avoid influ...
Uptake study of ClONO2 and BrONO2 by Halide containing droplets
ClONO2 BrONO2 Halide containing droplets
2009/3/3
The uptake kinetics of gaseous ClONO2 and BrONO2 on aqueous surfaces were measured, as a function of temperature and liquid composition (pure water and NaCl or NaBr containing solutions) using the dro...
The effect of organic compounds on the growth rate of cloud droplets in marine and forest settings
organic compounds cloud droplets marine forest
2008/11/21
Organic matter represents an important fraction of the fine particle aerosol, yet our knowledge of the roles of organics in the activation of aerosol particles into cloud droplets is poor.
Inhibition of ice crystallisation in highly viscous aqueous organic acid droplets
ice crystallisation organic acid droplets
2008/11/19
Homogeneous nucleation of ice within aqueous solution droplets and their subsequent crystallisation is thought to play a significant role in upper tropospheric ice cloud formation. It is normally assu...
How quickly do cloud droplets form on atmospheric particles
droplets atmospheric particles
2008/10/30
The influence of aerosols on cloud properties is an important modulator of the climate system. Traditional Köhler theory predicts the equilibrium concentration of cloud condensation nuclei (CCN);...