Makkonen, R., Asmi, A., Korhonen, H., Kokkola, H., Järvenoja, S., Räisänen, P., ...
The global aerosol-climate model ECHAM5-HAM was modified to improve the representation of new particle formation in the boundary layer. Activation-type nucleation mechanism was introduced to produce...
Kokkola, H., Hommel, R., Kazil, J., Niemeyer, U., Feichter, J., ...
In this manuscript, we present an intercomparison of three different aerosol microphysics modules that are implemented in the climate model ECHAM5. The comparison was done between the modal aerosol...
R. Makkonen, A. Asmi, H. Korhonen, H. Kokkola, S. Järvenoja, P. Räisänen, ...
The global aerosol-climate model ECHAM5-HAM was modified to improve the representation of new particle formation in the boundary layer. Activation-type nucleation mechanism was introduced to produce...
Makkonen, R., Asmi, A., Korhonen, H., Kokkola, H., Järvenoja, S., Räisänen, P., ...
The global aerosol-climate model ECHAM5-HAM was modified to improve the representation of new particle formation in the boundary layer. Activation-type nucleation mechanism was introduced to produce...
SALSA ? a Sectional Aerosol module for Large Scale Applications (2008)
Kokkola, H., Korhonen, H., Lehtinen, K. E. J., Makkonen, R., Asmi, A., Järvenoja, S., ...
The sectional aerosol module SALSA is introduced. The model has been designed to be implemented in large scale climate models, which require both accuracy and computational efficiency. We have used...
Kokkola, H., Vesterinen, M., Anttila, T., Laaksonen, A., Lehtinen, K. E. J.
In this paper, we consider the cloud drop activation of aerosol particles consisting of water soluble material and an insoluble core. Based on the Köhler theory, we derive analytical equations for...
Makkonen, R., Asmi, A., Korhonen, H., Kokkola, H., Järvenoja, S., Räisänen, P., ...
The global aerosol-climate model ECHAM5-HAM was modified to improve the representation of new particle formation in the boundary layer. Activation-type nucleation mechanism was introduced to produce...
SALSA ? a Sectional Aerosol module for Large Scale Applications (2008)
Kokkola, H., Korhonen, H., Lehtinen, K. E. J., Makkonen, R., Asmi, A., Järvenoja, S., ...
The sectional aerosol module SALSA is introduced. The model has been designed to be implemented in large scale climate models, which require both accuracy and computational efficiency. We have used...
Kokkola, H., Vesterinen, M., Anttila, T., Laaksonen, A., Lehtinen, K. E. J.
In this paper, we consider the cloud drop activation of aerosol particles consisting of water soluble material and an insoluble core. Based on the Köhler theory, we derive analytical equations for...
H. Kokkola, M. Vesterinen, T. Anttila, A. Laaksonen
In this paper, we consider the cloud drop activation of aerosol particles consisting of water soluble material and an insoluble core. Based on the Köhler theory, we derive analytical equations for...
SALSA ─ a Sectional Aerosol module for Large Scale Applications (2008)
H. Kokkola, H. Korhonen, R. Makkonen, A. Asmi, S. Järvenoja, ...
The sectional aerosol module SALSA is introduced. The model has been designed to be implemented in large scale climate models, which require both accuracy and computational efficiency. We have used...
R. Makkonen, A. Asmi, H. Korhonen, H. Kokkola, S. Järvenoja, P. Räisänen, ...
The global aerosol-climate model ECHAM5-HAM was modified to improve the representation of new particle formation in the boundary layer. Activation-type nucleation mechanism was introduced to produce...
Kokkola, H., Vesterinen, M., Anttila, T., Laaksonen, A., Lehtinen, K. E. J.
In this paper, we consider the cloud drop activation of aerosol particles consisting of water soluble material and an insoluble core. Based on the Köhler theory, we derive analytical equations for...
SALSA ? a Sectional Aerosol module for Large Scale Applications (2007)
Kokkola, H., Korhonen, H., Lehtinen, K. E. J., Makkonen, R., Asmi, A., Järvenoja, S., ...
The sectional aerosol module SALSA is introduced. The model has been designed to be implemented in large scale climate models, which require both accuracy and computational efficiency. We have used...
Kokkola, H., Vesterinen, M., Anttila, T., Laaksonen, A., Lehtinen, K. E. J.
In this paper, we consider the cloud drop activation of aerosol particles consisting of water soluble material and an insoluble core. Based on the Köhler theory, we derive analytical equations for...
SALSA ? a Sectional Aerosol module for Large Scale Applications (2007)
Kokkola, H., Korhonen, H., Lehtinen, K. E. J., Makkonen, R., Asmi, A., Järvenoja, S., ...
The sectional aerosol module SALSA is introduced. The model has been designed to be implemented in large scale climate models, which require both accuracy and computational efficiency. We have used...
SALSA – a Sectional Aerosol module for Large Scale Applications (2007)
H. Kokkola, H. Korhonen, R. Makkonen, A. Asmi, S. Järvenoja, ...
The sectional aerosol module SALSA is introduced. The model has been designed to be implemented in large scale climate models, which require both accuracy and computational efficiency. We have used...
H. Kokkola, M. Vesterinen, T. Anttila, A. Laaksonen
In this paper, we consider the cloud drop activation of aerosol particles consisting of water soluble material and an insoluble core. Based on the Köhler theory, we derive analytical equations for...
The influence of nitric acid on the cloud processing of aerosol particles (2006)
S. Romakkaniemi, H. Kokkola, A. Laaksonen
In this paper we present simulations of the effect of nitric acid (HNO3) on cloud processing of aerosol particles. Sulfuric acid (H2SO4) production and incloud coagulation are both affected by...
On the hygroscopic growth of ammoniated sulfate particles of non-stoichiometric composition (2006)
Kokkola, H., Joutsensaari, J., Hyppönen, N., Lehtinen, K. E. J., Laaksonen, A.
The hygroscopic growth of ammoniated sulfate particles was studied by measurements and model calculations for particles with varying ammonium-to-sulfate ratio. In the measurements, the...
The influence of nitric acid on the cloud processing of aerosol particles (2006)
Romakkaniemi, S., Kokkola, H., Lehtinen, K. E. J., Laaksonen, A.
In this paper we present simulations of the effect of nitric acid (HNO3) on cloud processing of aerosol particles. Sulfuric acid (H2SO4) production and incloud coagulation are both affected by...
On the hygroscopic growth of ammoniated sulfate particles of non-stoichiometric composition (2006)
Kokkola, H., Joutsensaari, J., Hyppönen, N., Lehtinen, K. E. J., Laaksonen, A.
The hygroscopic growth of ammoniated sulfate particles was studied by measurements and model calculations for particles with varying ammonium-to-sulfate ratio. In the measurements, the...
The influence of nitric acid on the cloud processing of aerosol particles (2006)
Romakkaniemi, S., Kokkola, H., Lehtinen, K. E. J., Laaksonen, A.
In this paper we present simulations of the effect of nitric acid (HNO3) on cloud processing of aerosol particles. Sulfuric acid (H2SO4) production and incloud coagulation are both affected by...
On the hygroscopic growth of ammoniated sulfate particles of non-stoichiometric composition (2006)
H. Kokkola, J. Joutsensaari, N. Hyppönen, A. Laaksonen
The hygroscopic growth of ammoniated sulfate particles was studied by measurements and model calculations for particles with varying ammonium-to-sulfate ratio. In the measurements, the...
Parameterization of the nitric acid effect on CCN activation (2005)
S. Romakkaniemi, H. Kokkola, A. Laaksonen
In this paper we present a parameterization of the nitric acid effect on cloud droplet formation. The new parameterization is intended to be used in large scale models in order to obtain regional and...
The influence of nitric acid on the cloud processing of aerosol particles (2005)
Romakkaniemi, S., Kokkola, H., Lehtinen, K. E. J., Laaksonen, A.
In this paper we present simulations of the effect of nitric acid (HNO3) on cloud processing of aerosol particles. Sulfuric acid (H2SO4) production and incloud coagulation are both affected by...
Parameterization of the nitric acid effect on CCN activation (2005)
Romakkaniemi, S., Kokkola, H., Laaksonen, A.
In this paper we present a parameterization of the nitric acid effect on cloud droplet formation. The new parameterization is intended to be used in large scale models in order to obtain regional and...
The influence of nitric acid on the cloud processing of aerosol particles (2005)
Romakkaniemi, S., Kokkola, H., Lehtinen, K. E. J., Laaksonen, A.
In this paper we present simulations of the effect of nitric acid (HNO3) on cloud processing of aerosol particles. Sulfuric acid (H2SO4) production and incloud coagulation are both affected by...
Parameterization of the nitric acid effect on CCN activation (2005)
Romakkaniemi, S., Kokkola, H., Laaksonen, A.
In this paper we present a parameterization of the nitric acid effect on cloud droplet formation. The new parameterization is intended to be used in large scale models in order to obtain regional and...
Growth of upper tropospheric aerosols due to uptake of HNO3 (2004)
S. Romakkaniemi, H. Kokkola, A. Petzold, A. Laaksonen
The effect of nitric acid on the equilibrium size distributions of upper tropospheric aerosols is calculated as a function of relative humidity. It is shown that HNO3 concentrations above a few...
Parameterization of the nitric acid effect on CCN activation (2004)
Romakkaniemi, S., Kokkola, H., Laaksonen, A.
In this paper we present a parameterization of the nitric acid effect on cloud droplet formation. The new parameterization is intended to be used in large scale models in order to obtain regional and...
Growth of upper tropospheric aerosols due to uptake of HNO3 (2004)
Romakkaniemi, S., Kokkola, H., Petzold, A., Laaksonen, A.
The effect of nitric acid on the equilibrium size distributions of upper tropospheric aerosols is calculated as a function of relative humidity. It is shown that HNO3 concentrations above a few...
Growth of upper tropospheric aerosols due to uptake of HNO3 (2004)
Romakkaniemi, S., Kokkola, H., Petzold, A., Laaksonen, A.
The effect of nitric acid on the equilibrium size distributions of upper tropospheric aerosols is calculated as a function of relative humidity. It is shown that HNO3 concentrations above a few...
Parameterization of the nitric acid effect on CCN activation (2004)
Romakkaniemi, S., Kokkola, H., Laaksonen, A.
In this paper we present a parameterization of the nitric acid effect on cloud droplet formation. The new parameterization is intended to be used in large scale models in order to obtain regional and...
Growth of upper tropospheric aerosols due to uptake of HNO3 (2004)
Romakkaniemi, S., Kokkola, H., Petzold, A., Laaksonen, A.
The effect of nitric acid on the equilibrium size distributions of upper tropospheric aerosols is calculated as a function of relative humidity. It is shown that HNO3 concentrations above a few...
Growth of upper tropospheric aerosols due to uptake of HNO3 (2004)
Romakkaniemi, S., Kokkola, H., Petzold, A., Laaksonen, A.
The effect of nitric acid on the equilibrium size distributions of upper tropospheric aerosols is calculated as a function of relative humidity. It is shown that HNO3 concentrations above a few...
Growth of upper tropospheric aerosols due to uptake of HNO3 (2004)
S. Romakkaniemi, H. Kokkola, A. Petzold, A. Laaksonen
The effect of nitric acid on the equilibrium size distributions of upper tropospheric aerosols is calculated as a function of relative humidity. It is shown that HNO3 concentrations above a few...
Parameterization of the nitric acid effect on CCN activation (2004)
S. Romakkaniemi, H. Kokkola, A. Laaksonen
In this paper we present a parameterization of the nitric acid effect on cloud droplet formation. The new parameterization is intended to be used in large scale models in order to obtain regional and...
H. Kokkola, S. Romakkaniemi, A. Laaksonen
We consider the equilibrium behavior of a polydisperse aqueous droplet population as a function of relative humidity (RH) when a soluble trace gas, such as nitric acid, is present in the system. The...
On the formation of radiation fogs under heavily polluted conditions (2003)
H. Kokkola, S. Romakkaniemi, A. Laaksonen
We have studied the effect of gaseous pollutants on fog droplet growth in heavily polluted air using a model that describes time-dependent sulfate production in the liquid phase and thermodynamical...
Kokkola, H., Romakkaniemi, S., Laaksonen, A.
We consider the equilibrium behavior of a polydisperse aqueous droplet population as a function of relative humidity (RH) when a soluble trace gas, such as nitric acid, is present in the system. The...
On the formation of radiation fogs under heavily polluted conditions (2003)
Kokkola, H., Romakkaniemi, S., Laaksonen, A.
We have studied the effect of gaseous pollutants on fog droplet growth in heavily polluted air using a model that describes time-dependent sulfate production in the liquid phase and thermodynamical...
Kokkola, H., Romakkaniemi, S., Laaksonen, A.
We consider the equilibrium behavior of a polydisperse aqueous droplet population as a function of relative humidity (RH) when a soluble trace gas, such as nitric acid, is present in the system. The...
On the formation of radiation fogs under heavily polluted conditions (2003)
Kokkola, H., Romakkaniemi, S., Laaksonen, A.
We have studied the effect of gaseous pollutants on fog droplet growth in heavily polluted air using a model that describes time-dependent sulfate production in the liquid phase and thermodynamical...
Kokkola, H., Romakkaniemi, S., Laaksonen, A.
We consider the equilibrium behavior of a polydisperse aqueous droplet population as a function of relative humidity (RH) when a soluble trace gas, such as nitric acid, is present in the system. The...
On the formation of radiation fogs under heavily polluted conditions (2003)
Kokkola, H., Romakkaniemi, S., Laaksonen, A.
We have studied the effect of gaseous pollutants on fog droplet growth in heavily polluted air using a model that describes time-dependent sulfate production in the liquid phase and thermodynamical...
Kokkola, H., Romakkaniemi, S., Laaksonen, A.
We consider the equilibrium behavior of a polydisperse aqueous droplet population as a function of relative humidity (RH) when a soluble trace gas, such as nitric acid, is present in the system. The...
On the formation of radiation fogs under heavily polluted conditions (2003)
Kokkola, H., Romakkaniemi, S., Laaksonen, A.
We have studied the effect of gaseous pollutants on fog droplet growth in heavily polluted air using a model that describes time-dependent sulfate production in the liquid phase and thermodynamical...
H. Kokkola, S. Romakkaniemi, A. Laaksonen
We consider the equilibrium behavior of a polydisperse aqueous droplet population as a function of relative humidity (RH) when a soluble trace gas, such as nitric acid, is present in the system. The...