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SOSA – a new model to simulate the concentrations of organic vapours and sulphuric acid inside the ABL – Part 1: Model description and initial evaluation
SOSA organic vapours sulphuric acid the ABL initial evaluation
2011/1/18
Chemistry in the atmospheric boundary layer (ABL) is controlled by complex processes of surface fluxes, flow, turbulent transport, and chemical reactions. We present a new model SOSA (model to simulat...
Irreversible loss of ice nucleation active sites in mineral dust particles caused by sulphuric acid condensation
ice nucleation active sites mineral dust particles sulphuric acid condensation
2010/12/20
During the FROST-2 (FReezing Of duST) measurement campaign conducted at the Leipzig Aerosol Cloud Interaction Simulator (LACIS), we investigated changes in the ice nucleation properties of 300 nm Ariz...
On the roles of sulphuric acid and low-volatility organic vapours in the initial steps of atmospheric new particle formation
sulphuric acid low-volatility organic vapours atmospheric particle formation
2010/12/20
Sulphuric acid and organic vapours have been identified as the key components in the ubiquitous secondary new particle formation in the atmosphere. In order to assess their relative contribution and s...
Aerosol dynamics simulations on the connection of sulphuric acid and new particle formation
Aerosol dynamics simulations sulphuric acid new particle formation
2009/5/7
We have performed a series of simulations with an aerosol dynamics box model to study the connection between new particle formation and sulphuric acid concentration. For nucleation either activation m...
Experimental investigation of homogeneous freezing of sulphuric acid particles in the aerosol chamber AIDA
homogeneous freezing sulphuric acid particles aerosol chamber AIDA
2009/3/10
The homogeneous freezing of supercooled H2SO4/H2O solution droplets was investigated in the aerosol chamber AIDA (Aerosol Interactions and Dynamics in the Atmosphere) of Forschungszentrum Karlsruhe. 2...
The contribution of sulphuric acid to atmospheric particle formation and growth: a comparison between boundary layers in Northern and Central Europe
sulphuric acid atmospheric particle boundary layers Northern and Central Europe
2009/2/12
Atmospheric gaseous sulphuric acid was measured and its influence on particle formation and growth was investigated building on aerosol data. The measurements were part of the EU-project QUEST and too...
Sulphuric acid closure and contribution to nucleation mode particle growth
Sulphuric acid closure nucleation mode particle growth
2009/2/8
Sulphuric acid concentrations were measured and calculated based on pseudo steady state model with corresponding measurements of CO, NOx, O3, SO2, methane and non-methane hydrocarbon (NMHC) concentrat...
Atmospheric sulphuric acid and aerosol formation: implications from atmospheric measurements for nucleation and early growth mechanisms
Atmospheric sulphuric acid aerosol formation atmospheric measurements early growth mechanisms
2009/1/15
We have investigated the formation and early growth of atmospheric secondary aerosol particles building on atmospheric measurements. The measurements were part of the QUEST 2 campaign which took place...
Cluster activation theory as an explanation of the linear dependence between formation rate of 3nm particles and sulphuric acid concentration
Cluster activation theory linear dependence formation rate of 3nm particles sulphuric acid concentration
2009/1/4
According to atmospheric observations new particle formation seems to be a function of sulphuric acid concentration to the power from one to two. The nucleation theorem then predicts that the critical...
Connections between atmospheric sulphuric acid and new particle formation during QUEST III–IV campaigns in Heidelberg and Hyytiälä
atmospheric sulphuric acid new particle formation QUEST III–IV campaigns Heidelberg Hyytiä lä
2008/12/8
This study investigates the connections between atmospheric sulphuric acid and new particle formation during QUEST III and BACCI/QUEST IV campaigns. The campaigns have been conducted in Heidelberg (20...