Negatively charged nanoparticles produced by splashing of water (2009)
H. Tammet, U. Hõrrak, M. Kulmala
The production of splashing-generated balloelectric intermediate ions was studied by means of mobility spectrometry in the atmosphere during the rain and in a laboratory experiment simulating the...
Variation and balance of positive air ion concentrations in a boreal forest (2008)
Hõrrak, U., Aalto, P. P., Salm, J., Komsaare, K., Tammet, H., Mäkelä, J. M., ...
Air ions are characterized on the basis of measurements carried out in a boreal forest at the Hyytiälä SMEAR station, Finland, during the BIOFOR III campaign in spring 1999. The air ions were...
Variation and balance of positive air ion concentrations in a boreal forest (2008)
Hõrrak, U., Aalto, P. P., Salm, J., Komsaare, K., Tammet, H., Mäkelä, J. M., ...
Air ions are characterized on the basis of measurements carried out in a boreal forest at the Hyytiälä SMEAR station, Finland, during the BIOFOR III campaign in spring 1999. The air ions were...
Variation and balance of positive air ion concentrations in a boreal forest (2008)
U. Hõrrak, P. P. Aalto, J. Salm, K. Komsaare, H. Tammet, J. M. Mäkelä, ...
Air ions are characterized on the basis of measurements carried out in a boreal forest at the Hyytiälä SMEAR station, Finland, during the BIOFOR III campaign in spring 1999. The air ions were...
Negatively charged nanoparticles produced by splashing of water (2008)
H. Tammet, U. Hõrrak, M. Kulmala
The production of splashing-generated balloelectric intermediate ions was studied by means of mobility spectrometry in the atmosphere during the rain and in a laboratory experiment simulating the...
Characterization of positive air ions in boreal forest air at the Hyytiälä SMEAR station (2007)
Hõrrak, U., Aalto, P. P., Salm, J., Komsaare, K., Tammet, H., Mäkelä, J. M., ...
The behavior of the concentration of positive small (or cluster) air ions and naturally charged nanometer aerosol particles (aerosol ions) has been studied on the basis of measurements carried out in...
Characterization of positive air ions in boreal forest air at the Hyytiälä SMEAR station (2007)
Hõrrak, U., Aalto, P. P., Salm, J., Komsaare, K., Tammet, H., Mäkelä, J. M., ...
The behavior of the concentration of positive small (or cluster) air ions and naturally charged nanometer aerosol particles (aerosol ions) has been studied on the basis of measurements carried out in...
Characterization of positive air ions in boreal forest air at the Hyytiälä SMEAR station (2007)
U. Hõrrak, P. P. Aalto, J. Salm, K. Komsaare, H. Tammet, J. M. Mäkelä, ...
The behavior of the concentration of positive small (or cluster) air ions and naturally charged nanometer aerosol particles (aerosol ions) has been studied on the basis of measurements carried out in...
H. Tammet, U. Hõrrak, L. Laakso, M. Kulmala
A new mathematical model describing air ion balance was developed and tested. It has improved approximations and includes dry deposition of ions onto the forest canopy. The model leads to an explicit...
Tammet, H., Hõrrak, U., Laakso, L., Kulmala, M.
A new theoretical model includes dry deposition of ions onto the forest canopy and takes into account different parameters of positive and negative ions. Explicit algebraic solution of the air ion...
Tammet, H., Hõrrak, U., Laakso, L., Kulmala, M.
A new mathematical model describing air ion balance was developed and tested. It has improved approximations and includes dry deposition of ions onto the forest canopy. The model leads to an explicit...
Tammet, H., Hõrrak, U., Laakso, L., Kulmala, M.
A new theoretical model includes dry deposition of ions onto the forest canopy and takes into account different parameters of positive and negative ions. Explicit algebraic solution of the air ion...
Tammet, H., Hõrrak, U., Laakso, L., Kulmala, M.
A new mathematical model describing air ion balance was developed and tested. It has improved approximations and includes dry deposition of ions onto the forest canopy. The model leads to an explicit...
Ion production rate in a boreal forest based on ion, particle and radiation measurements (2004)
L. Laakso, T. Petäjä, M. Kulmala, J. Paatero, U. Hõrrak, ...
In this study the ion production rates in a boreal forest were studied based on two different methods: 1) cluster ion and particle concentration measurements, 2) external radiation and radon...
Initial steps of aerosol growth (2004)
M. Kulmala, L. Laakso, I. Riipinen, M. Dal Maso, T. Anttila, ...
The formation and growth of atmospheric aerosols depend on several steps, namely nucleation, initial steps of growth and subsequent – mainly condensational – growth. This work focuses on...
Initial steps of aerosol growth (2004)
Kulmala, O., Laakso, L., Lehtinen, K. E. J., Riipinen, I., Dal Maso, M., Anttila, T., ...
The formation and growth of atmospheric aerosols depend on several steps, namely nucleation, initial steps of growth and subsequent ? mainly condensational ? growth. This work focuses on the initial...
Ion production rate in a boreal forest based on ion, particle and radiation measurements (2004)
Laakso, L., Petäjä, T., Lehtinen, K. E. J., Kulmala, M., Paatero, J., Hõrrak, U., ...
In this study the ion production rates in a boreal forest are studied based on two different methods: 1) cluster ion and particle concentration measurements, 2) external radiation and radon...
Initial steps of aerosol growth (2004)
Kulmala, M., Laakso, L., Lehtinen, K. E. J., Riipinen, I., Dal Maso, M., Anttila, T., ...
The formation and growth of atmospheric aerosols depend on several steps, namely nucleation, initial steps of growth and subsequent ? mainly condensational ? growth. This work focuses on the initial...
Ion production rate in a boreal forest based on ion, particle and radiation measurements (2004)
Laakso, L., Petäjä, T., Lehtinen, K. E. J., Kulmala, M., Paatero, J., Hõrrak, U., ...
In this study the ion production rates in a boreal forest were studied based on two different methods: 1) cluster ion and particle concentration measurements, 2) external radiation and radon...
Initial steps of aerosol growth (2004)
Kulmala, O., Laakso, L., Lehtinen, K. E. J., Riipinen, I., Dal Maso, M., Anttila, T., ...
The formation and growth of atmospheric aerosols depend on several steps, namely nucleation, initial steps of growth and subsequent ? mainly condensational ? growth. This work focuses on the initial...
Ion production rate in a boreal forest based on ion, particle and radiation measurements (2004)
Laakso, L., Petäjä, T., Lehtinen, K. E. J., Kulmala, M., Paatero, J., Hõrrak, U., ...
In this study the ion production rates in a boreal forest are studied based on two different methods: 1) cluster ion and particle concentration measurements, 2) external radiation and radon...
Initial steps of aerosol growth (2004)
Kulmala, M., Laakso, L., Lehtinen, K. E. J., Riipinen, I., Dal Maso, M., Anttila, T., ...
The formation and growth of atmospheric aerosols depend on several steps, namely nucleation, initial steps of growth and subsequent ? mainly condensational ? growth. This work focuses on the initial...
Ion production rate in a boreal forest based on ion, particle and radiation measurements (2004)
Laakso, L., Petäjä, T., Lehtinen, K. E. J., Kulmala, M., Paatero, J., Hõrrak, U., ...
In this study the ion production rates in a boreal forest were studied based on two different methods: 1) cluster ion and particle concentration measurements, 2) external radiation and radon...
Ion production rate in a boreal forest based on ion, particle and radiation measurements (2004)
L. Laakso, T. Petäjä, M. Kulmala, J. Paatero, U. Hõrrak, ...
In this study the ion production rates in a boreal forest are studied based on two different methods: 1) cluster ion and particle concentration measurements, 2) external radiation and radon...
Initial steps of aerosol growth (2004)
O. Kulmala, L. Laakso, I. Riipinen, M. Dal Maso, T. Anttila, ...
The formation and growth of atmospheric aerosols depend on several steps, namely nucleation, initial steps of growth and subsequent – mainly condensational – growth. This work focuses on...
The ground-level atmospheric current response to a magnetic substorm. (2000)
Wilson, A., Belova, E., Kirkwood, S., Nielsen, E., Tammet, H.
The effect of magnetic substorms on near-ground atmospheric current (2000)
Belova, E., Kirkwood, S., Tammet, H.
Ionosphere-magnetosphere disturbances at high latitudes, e.g. magnetic substorms, are accompanied by energetic particle precipitation and strong variations of the ionospheric electric fields and...
The effect of magnetic substorms on near-ground atmospheric current (2000)
Belova, E., Kirkwood, S., Tammet, H.
Ionosphere-magnetosphere disturbances at high latitudes, e.g. magnetic substorms, are accompanied by energetic particle precipitation and strong variations of the ionospheric electric fields and...