T. Pohja, S. Launiainen, P. Hari, H. Mannila, M. Kulmala
Abstract. Atmospheric aerosol particle formation is frequently observed throughout the atmosphere, but despite various attempts of explanation, the processes behind it remain unclear. In this study...
Photosynthetic production of boreal ground vegetation after a forest clear-cut (2009)
L. Kulmala, J. Pumpanen, T. Vesala, P. Hari
Heather (<i>Calluna vulgaris</i>), rosebay willowherb (<i>Epilobium angustifolium</i>), wavy hair-grass (<i>Deschampsia flexuosa</i>) and raspberry (<i>Rubus...
Autumn warming and carbon balance of a boreal Scots pine forest in Southern Finland (2009)
T. Vesala, S. Launiainen, P. Kolari, J. Pumpanen, S. Sevanto, P. Hari, ...
We analyzed the dynamics of carbon balance components: gross primary production (GPP) and total ecosystem respiration (TER), of a boreal Scots pine forest in Southern Finland. Our aim was to study...
H. K. Lappalainen, S. Sevanto, J. Bäck, T. M. Ruuskanen, P. Kolari, R. Taipale, ...
Atmospheric concentrations of methanol, acetaldehyde, acetone, isoprene and monoterpenes were measured using a PTR-MS (proton transfer reaction mass spectrometry) in a boreal forest site in...
Duursma, R.A., Kolari, P., Perämäki, M., Pulkkinen, M., Mäkelä, A., Nikinmaa, E., ...
Gross primary production (GPP) is the primary source of all carbon fluxes in the ecosystem. Understanding variation in this flux is vital to understanding variation in the carbon sink of forest...
H. K. Lappalainen, S. Sevanto, J. Bäck, T. M. Ruuskanen, P. Kolari, R. Taipale, ...
Atmospheric concentrations of methanol, acetaldehyde, acetone, isoprene and monoterpenes were measured using PTR-MS (proton transfer reaction mass spectrometry) in a boreal forest site in Hyytiälä,...
Duursma, RA, Kolari, P, Perämäki, M, Pulkkinen, M, Mäkelä, A, Nikinmaa, E, ...
Gross primary production (GPP) is the primary source of all carbon fluxes in the ecosystem. Understanding, variation in this flux is vital to understanding variation in the carbon sink of forest...
Comparison of twin and autologous transplants for multiple myeloma (2008)
Bashey, A., Perez, W. S., Zhang, M. J., Anderson, Kenneth, Ballen, K. K., Berenson, J. R., ...
Copyright © 2008 American Society for Blood and Marrow Transplantation Published by Elsevier Inc.
Kumar, S., Perez, W. S., Zhang, M. J., Ballen, K., Bashey, A., To, Luen Bik, ...
Copyright © 2008 American Society for Blood and Marrow Transplantation Published by Elsevier Inc.
Comparison of twin and autologous transplants for multiple myeloma (2008)
Bashey, A., Perez, W. S., Zhang, M. J., Anderson, Kenneth, Ballen, K. K., Berenson, J. R., ...
Copyright © 2008 American Society for Blood and Marrow Transplantation Published by Elsevier Inc.
Kumar, S., Perez, W. S., Zhang, M. J., Ballen, K., Bashey, A., To, Luen Bik, ...
Copyright © 2008 American Society for Blood and Marrow Transplantation Published by Elsevier Inc.
A. Arneth, Ü. Niinemets, S. Pressley, J. Bäck, P. Hari, T. Karl, ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many – though not all – laboratory experiments indicate...
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many though not all laboratory experiments indicate that...
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many – though not all – laboratory experiments indicate that...
Foliage surface ozone deposition: a role for surface moisture? (2006)
N. Altimir, P. Kolari, T. Vesala, J. Bäck, T. Suni, ...
This paper addresses the potential role of surface wetness in ozone deposition to plant foliage. We studied Scots pine foliage in field conditions at the SMEARII field measurement station in Finland....
Foliage surface ozone deposition: a role for surface moisture? (2006)
Altimir, N., Kolari, P., Vesala, T., Bäck, J., Suni, T., ...
This paper addresses the potential role of surface wetness in ozone deposition to plant foliage. We studied Scots pine foliage in field conditions at the SMEARII field measurement station in Finland....
Foliage surface ozone deposition: a role for surface moisture? (2006)
Altimir, N., Kolari, P., Vesala, T., Bäck, J., Suni, T., ...
This paper addresses the potential role of surface wetness in ozone deposition to plant foliage. We studied Scots pine foliage in field conditions at the SMEARII field measurement station in Finland....
Foliage surface ozone deposition: a role for surface moisture? (2006)
Altimir, N., Kolari, P., Vesala, T., Bäck, J., Suni, T., ...
This paper addresses the potential role of surface wetness in ozone deposition to plant foliage. We studied Scots pine foliage in field conditions at the SMEARII field measurement station in Finland....
Foliage surface ozone deposition: a role for surface moisture? (2006)
Altimir, N., Kolari, P., Vesala, T., Bäck, J., Suni, T., ...
This paper addresses the potential role of surface wetness in ozone deposition to plant foliage. We studied Scots pine foliage in field conditions at the SMEARII field measurement station in Finland....
Process-based estimates of terrestrial ecosystem isoprene emissions (2006)
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many though not all laboratory experiments indicate that...
Process-based estimates of terrestrial ecosystem isoprene emissions (2006)
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., ...
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many – though not all – laboratory experiments indicate that...
Foliage surface ozone deposition: a role for surface moisture? (2006)
N. Altimir, P. Kolari, T. Vesala, J. Bäck, T. Suni, ...
This paper addresses the potential role of surface wetness in ozone deposition to plant foliage. We studied Scots pine foliage in field conditions at the SMEARII field measurement station in Finland....
A look at aerosol formation using data mining techniques (2005)
S. Hyvönen, H. Junninen, L. Laakso, M. Dal Maso, T. Grönholm, B. Bonn, ...
Atmospheric aerosol particle formation is frequently observed throughout the atmosphere, but despite various attempts of explanation, the processes behind it remain unclear. In this study data mining...
Temperature and light dependence of the VOC emissions of Scots pine (2005)
V. Tarvainen, H. Hakola, H. Hellén, J. Bäck, P. Hari, M. Kulmala
The volatile organic compound (VOC) emission rates of Scots pine (Pinus sylvestris L.) were measured from trees growing in a natural forest environment at two locations in Finland. The observed...
A look at aerosol formation using data mining techniques (2005)
Hyvönen, S., Junninen, H., Laakso, L., Dal Maso, M., Grönholm, T., Bonn, B., ...
Atmospheric aerosol particle formation is frequently observed throughout the atmosphere, but despite various attempts of explanation, the processes behind it remain unclear. In this study data mining...
A look at aerosol formation using data mining techniques (2005)
Hyvönen, S., Junninen, H., Laakso, L., Dal Maso, M., Grönholm, T., Bonn, B., ...
Atmospheric aerosol particle formation is frequently observed throughout the atmosphere, but despite various attempts of explanation, the processes behind it remain unclear. In this study data mining...
Temperature and light dependence of the VOC emissions of Scots pine (2005)
Tarvainen, V., Hakola, H., Hellén, H., Bäck, J., Hari, P., Kulmala, M.
The volatile organic compound (VOC) emission rates of Scots pine (Pinus sylvestris L.) were measured from trees growing in a natural forest environment at two locations in Finland. The observed total...
A look at aerosol formation using data mining techniques (2005)
Hyvönen, S., Junninen, H., Laakso, L., Dal Maso, M., Grönholm, T., Bonn, B., ...
Atmospheric aerosol particle formation is frequently observed throughout the atmosphere, but despite various attempts of explanation, the processes behind it remain unclear. In this study data mining...
A look at aerosol formation using data mining techniques (2005)
Hyvönen, S., Junninen, H., Laakso, L., Dal Maso, M., Grönholm, T., Bonn, B., ...
Atmospheric aerosol particle formation is frequently observed throughout the atmosphere, but despite various attempts of explanation, the processes behind it remain unclear. In this study data mining...
Temperature and light dependence of the VOC emissions of Scots pine (2005)
Tarvainen, V., Hakola, H., Hellén, H., Bäck, J., Hari, P., Kulmala, M.
The volatile organic compound (VOC) emission rates of Scots pine (Pinus sylvestris L.) were measured from trees growing in a natural forest environment at two locations in Finland. The observed total...
Atmospheric Chemistry and Physics Discussions (2005)
S. Hyvönen, H. Junninen, L. Laakso, M. Dal Maso, T. Grönholm, B. Bonn, ...
www.atmos-chem-phys.org/acpd/5/7577/
H. Vehkamäki, M. Dal Maso, T. Hussein, R. Flanagan, A. Hyvärinen, J. Lauros, ...
During the calendar years 1998-2002, 147 clear 8nm diameter particle formation events have been identified at the SMEAR I station in Värriö, northern Finland. The events have been...
A new feedback mechanism linking forests, aerosols, and climate (2004)
M. Kulmala, T. Suni, M. Dal Maso, M. Boy, A. Reissell, ...
The possible connections between the carbon balance of ecosystems and aerosol-cloud-climate interactions play a significant role in climate change studies. Carbon dioxide is a greenhouse gas, whereas...
Comparison of different chamber techniques for measuring soil CO2 efflux (2004)
Pumpanen, J., Kolari, P., Ilvesniemi, H., Minkkinen, K., Vesala, T., Niinisto, S., ...
Temperature and light dependence of the VOC emissions of Scots pine (2004)
Tarvainen, V., Hakola, H., Hellén, H., Bäck, J., Hari, P., Kulmala, M.
The volatile organic compound (VOC) emission rates of Scots pine (Pinus sylvestris L.) were measured from trees growing in a natural forest environment at two locations in Finland. The emission rate...
Vehkamäki, H., Dal Maso, M., Hussein, T., Flanagan, R., Hyvärinen, A., Lauros, J., ...
We have identified 147 clear 8 nm diameter particle formation events at the SMEAR I station in Värriö, northern Finland during calendar years 1998?2002. The events have been classified in detail...
Vehkamäki, H., Dal Maso, M., Hussein, T., Flanagan, R., Hyvärinen, A., Lauros, J., ...
During the calendar years 1998-2002, 147 clear 8nm diameter particle formation events have been identified at the SMEAR I station in Värriö, northern Finland. The events have been classified in...
A new feedback mechanism linking forests, aerosols, and climate (2004)
Kulmala, M., Suni, T., Lehtinen, K. E. J., Dal Maso, M., Boy, M., Reissell, A., ...
The possible connections between the carbon balance of ecosystems and aerosol-cloud-climate interactions play a significant role in climate change studies. Carbon dioxide is a greenhouse gas, whereas...
Temperature and light dependence of the VOC emissions of Scots pine (2004)
Tarvainen, V., Hakola, H., Hellén, H., Bäck, J., Hari, P., Kulmala, M.
The volatile organic compound (VOC) emission rates of Scots pine (Pinus sylvestris L.) were measured from trees growing in a natural forest environment at two locations in Finland. The emission rate...
Vehkamäki, H., Dal Maso, M., Hussein, T., Flanagan, R., Hyvärinen, A., Lauros, J., ...
We have identified 147 clear 8 nm diameter particle formation events at the SMEAR I station in Värriö, northern Finland during calendar years 1998?2002. The events have been classified in detail...
Vehkamäki, H., Dal Maso, M., Hussein, T., Flanagan, R., Hyvärinen, A., Lauros, J., ...
During the calendar years 1998-2002, 147 clear 8nm diameter particle formation events have been identified at the SMEAR I station in Värriö, northern Finland. The events have been classified in...
A new feedback mechanism linking forests, aerosols, and climate (2004)
Kulmala, M., Suni, T., Lehtinen, K. E. J., Dal Maso, M., Boy, M., Reissell, A., ...
The possible connections between the carbon balance of ecosystems and aerosol-cloud-climate interactions play a significant role in climate change studies. Carbon dioxide is a greenhouse gas, whereas...
H. Vehkamäki, M. Dal Maso, T. Hussein, R. Flanagan, A. Hyvärinen, J. Lauros, ...
We have identified 147 clear 8 nm diameter particle formation events at the SMEAR I station in Värriö, northern Finland during calendar years 1998–2002. The events have been...
Temperature and light dependence of the VOC emissions of Scots pine (2004)
V. Tarvainen, H. Hakola, H. Hellén, J. Bäck, P. Hari, M. Kulmala
The volatile organic compound (VOC) emission rates of Scots pine (<I>Pinus sylvestris</I> L.) were measured from trees growing in a natural forest environment at two locations in...
Air temperature triggers the recovery of evergreen boreal forest photosynthesis in spring (2003)
Suni, T., Berninger, F., Vesala, T., Markkanen, T., Hari, P., Makela, A., ...
A new feedback mechanism linking forests, aerosols, and climate (2003)
Kulmala, M., Suni, T., Lehtinen, K. E. J., Dal Maso, M., Boy, M., Reissell, A., ...
Among significant issues in climate change studies are the possible connections between the carbon balance of ecosystems and aerosol-cloud-climate interactions. Carbon dioxide is a greenhouse gas,...
A new feedback mechanism linking forests, aerosols, and climate (2003)
Kulmala, M., Suni, T., Lehtinen, K. E. J., Dal Maso, M., Boy, M., Reissell, A., ...
Among significant issues in climate change studies are the possible connections between the carbon balance of ecosystems and aerosol-cloud-climate interactions. Carbon dioxide is a greenhouse gas,...
Kramer, K., Leinonen, I., Bartelink, H.H., Berbigier, P., Borghetti, M., Bernhofer, C., ...
Reliable models are required to assess the impacts of climate change on forest ecosystems. Precise and independent data are essential to assess this accuracy. The flux measurements collected by the...
We analyzed the combined effect of differences in the photosynthetic light response curve and in the distributions of photosynthetically active radiation (PAR) irradiance within the canopy on the CO2...
Aite, K., Hari, P., Bijker, W., Middelhoek, J.
The fabrication process of a two-dimensional position sensitive radiation detector (2-D PSD) with a 4 cm2 active area is presented. Critical steps in the fabrication are emphasised. Edge effects...
Aite, K., Hari, P., Bijker, W., Middelhoek, J.
The fabrication process of a two-dimensional position sensitive radiation detector (2-D PSD) with a 4 cm2 active area is presented. Critical steps in the fabrication are emphasised. Edge effects...
Aite, K., Hari, P., Bijker, W., Middelhoek, J.
The fabrication process of a two-dimensional position sensitive radiation detector (2-D PSD) with a 4 cm2 active area is presented. Critical steps in the fabrication are emphasised. Edge effects...
A Dynamic Model for Photosynthesis (1982)
KAITALA, V., HARI, P., VAPAAVUORI, E., SALMINEN, R.
A dynamic mathematical model of the effect of radiant flux density and CO2 concentration on the rate of photosynthesis is proposed. An appropriate dynamic experimental method for ecological studies...