M. Dal Maso

Classifying previously undefined days from eleven years of aerosol-particle-size distribution data from the SMEAR II station, Hyytiälä, Finland (2009)

S. Buenrostro Mazon, I. Riipinen, D. M. Schultz, M. Valtanen, M. Dal Maso, L. Sogacheva, ...

Studies of secondary aerosol-particle formation depend on identifying days in which new particle formation occurs and, by comparing them to days with no signs of particle formation, identifying the...

Organic nitrate and secondary organic aerosol yield from NO3 oxidation of β-pinene evaluated using a gas-phase kinetics/aerosol partitioning model (2009)

J. L. Fry, A. Kiendler-Scharr, A. W. Rollins, P. J. Wooldridge, S. S. Brown, H. Fuchs, ...

The yields of organic nitrates and of secondary organic aerosol (SOA) particle formation were measured for the reaction NO3+β-pinene under dry and humid conditions in the atmosphere simulation...

Photochemical production of aerosols from real plant emissions (2009)

Th. F. Mentel, J. Wildt, A. Kiendler-Scharr, E. Kleist, R. Tillmann, M. Dal Maso, ...

Emission of biogenic volatile organic compounds (VOC) which on oxidation form secondary organic aerosols (SOA) can couple the vegetation with the atmosphere and climate. Particle formation from tree...

Time span and spatial scale of regional new particle formation events over Finland and Southern Sweden (2009)

T. Hussein, H. Junninen, P. Tunved, A. Kristensson, M. Dal Maso, I. Riipinen, ...

We investigated the time span and spatial scale of regional new particle formation (NPF) events in Finland and Southern Sweden using measured particle number size distributions at five background...

Time-span and spatial-scale of regional new particle formation events over Finland and Southern Sweden (2009)

T. Hussein, H. Junninen, P. Tunved, A. Kristensson, M. Dal Maso, I. Riipinen, ...

We investigated the time-span and spatial-scale of regional new particle formation (NPF) events in Finland and Southern Sweden using measured particle number size distributions at five background...

Photochemical production of aerosols from real plant emissions (2009)

Th. F. Mentel, J. Wildt, A. Kiendler-Scharr, E. Kleist, R. Tillmann, M. Dal Maso, ...

By emission of volatile organic compounds (VOC) which on oxidation form secondary organic aerosols (SOA) the vegetation is coupled to atmosphere and climate. New particle formation from tree...

Atmospheric data over a solar cycle: no connection between galactic cosmic rays and new particle formation (2009)

M. Kulmala, I. Riipinen, T. Nieminen, M. Hulkkonen, L. Sogacheva, H. E. Manninen, ...

Aerosol particles affect the Earth's radiative balance by directly scattering and absorbing solar radiation and, indirectly, through their activation into cloud droplets. Both effects are known with...

The role of VOC oxidation products in continental new particle formation (2008)

A. Laaksonen, M. Kulmala, C. D. O'Dowd, J. Joutsensaari, P. Vaattovaara, S. Mikkonen, ...

Aerosol physical and chemical properties and trace gas concentrations were measured during the QUEST field campaign in March–April 2003, in Hyytiälä, Finland. Our aim was to understand the...

SO₂ oxidation products other than H₂SO₄ as a trigger of new particle formation. Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications (2008)

A. Laaksonen, M. Kulmala, T. Berndt, F. Stratmann, S. Mikkonen, A. Ruuskanen, ...

Atmospheric new particle formation is generally thought to occur due to homogeneous or ion-induced nucleation of sulphuric acid. We compare ambient nucleation rates with laboratory data from...

SO2 oxidation products other than H2SO4 as a trigger of new particle formation. Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications (2008)

A. Laaksonen, M. Kulmala, T. Berndt, F. Stratmann, S. Mikkonen, A. Ruuskanen, ...

Atmospheric new particle formation is generally thought to occur due to homogeneous or ion-induced nucleation of sulphuric acid. We compare ambient nucleation rates with laboratory data from...

SO₂ oxidation products other than H₂SO₄ as a trigger of new particle formation – Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications (2008)

A. Laaksonen, M. Kulmala, T. Berndt, F. Stratmann, S. Mikkonen, A. Ruuskanen, ...

Atmospheric new particle formation is generally thought to occur due to homogeneous or ion-induced nucleation of sulphuric acid. We compare ambient nucleation rates with laboratory data from...

Classifying previously undefined days from eleven years of aerosol-particle-size distribution data from the SMEAR II station, Hyytiälä, Finland (2008)

S. Buenrostro Mazon, I. Riipinen, D. M. Schultz, M. Valtanen, M. Dal Maso, L. Sogacheva, ...

Studies of secondary aerosol-particle formation depend on identifying days in which new particle formation occurs and, by comparing them to days with no signs of particle formation, identifying the...

Organic nitrate and secondary organic aerosol yield from NO₃ oxidation of <i>β</i>-pinene evaluated using a gas-phase kinetics/aerosol partitioning model (2008)

J. L. Fry, A. Kiendler-Scharr, A. W. Rollins, P. J. Wooldridge, S. S. Brown, H. Fuchs, ...

The yields of organic nitrates and of secondary organic aerosol (SOA) particle formation were measured for the reaction NO₃+<i>β</i>-pinene under dry and humid...

SO2 oxidation products other than H2SO4 as a trigger of new particle formation – Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications (2008)

A. Laaksonen, M. Kulmala, T. Berndt, F. Stratmann, S. Mikkonen, A. Ruuskanen, ...

Atmospheric new particle formation is generally thought to occur due to homogeneous or ion-induced nucleation of sulphuric acid. We compare ambient nucleation rates with laboratory data from...

Organic nitrate and secondary organic aerosol yield from NO3 oxidation of β-pinene evaluated using a gas-phase kinetics/aerosol partitioning model (2008)

J. L. Fry, A. Kiendler-Scharr, A. W. Rollins, P. J. Wooldridge, S. S. Brown, H. Fuchs, ...

The yields of organic nitrates and of secondary organic aerosol (SOA) particle formation were measured for the reaction NO3+β-pinene under dry and humid conditions in the atmosphere simulation...

Identification and classification of the formation of intermediate ions measured in boreal forest (2007)

A. Hirsikko, T. Bergman, L. Laakso, M. Dal Maso, I. Riipinen, U. Hõrrak, ...

We have measured the size distributions of air ions (0.42–7.5 nm in diameter) with the Balanced Scanning Mobility Analyzer in boreal forest, in Southern Finland since spring 2003. The size...

Nucleation and growth of new particles in Po Valley, Italy (2007)

A. Hamed, J. Joutsensaari, S. Mikkonen, L. Sogacheva, M. Dal Maso, M. Kulmala, ...

Aerosol number distribution measurements are reported at San Pietro Capofiume (SPC) station (44°39' N, 11°37' E) for the time period 2002–2005. The station is located in Po...

Connections between atmospheric sulphuric acid and new particle formation during QUEST III–IV campaigns in Heidelberg and Hyytiälä (2007)

I. Riipinen, M. Kulmala, F. Arnold, M. Dal Maso, W. Birmili, ...

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...

Sub-micron atmospheric aerosols in the surroundings of Marseille and Athens: physical characterization and new particle formation (2007)

T. Petäjä, M. Dal Maso, H. Junninen, I. K. Koponen, T. Hussein, ...

The properties of atmospheric aerosol particles in Marseille and Athens were investigated. The studies were performed in Marseille, France, during July 2002 and in Athens, Greece, during June 2003....

Sub-micron atmospheric aerosols in the surroundings of Marseille and Athens: physical characterization and new particle formation (2007)

T. Petäjä, M. Dal Maso, H. Junninen, I. K. Koponen, T. Hussein, ...

The properties of atmospheric aerosol particles in Marseille and Athens were investigated. The studies were performed in Marseille, France, during July 2002 and in Athens, Greece, during June 2003....

Ambient sesquiterpene concentration and its link to air ion measurements (2007)

B. Bonn, A. Hirsikko, H. Hakola, T. Kurtén, L. Laakso, M. Boy, ...

Ambient air ion size distributions have been measured continuously at the Finnish boreal forest site in Hyytiälä since spring 2003. In general, these measurements show a maximum of air ions below...

Contribution of mixing in the ABL to new particle formation based on observations (2007)

J. Lauros, E. D. Nilsson, M. Dal Maso, M. Kulmala

The connection between new particle formation and micro- and mesoscale meteorology was studied based on measurements at SMEAR II station in Southern Finland. We analyzed turbulent conditions...

Contribution of mixing in the ABL to new particle formation based on some observations (2007)

J. Lauros, E. D. Nilsson, M. Dal Maso, M. Kulmala

The connection between new particle formation and micro- and mesoscale meteorology was studied based on measurements at SMEAR II station in Southern Finland. We analyzed turbulent conditions...

The role of VOC oxidation products in continental new particle formation (2007)

A. Laaksonen, M. Kulmala, C. D. O'Dowd, J. Joutsensaari, P. Vaattovaara, S. Mikkonen, ...

Aerosol physical and chemical properties and trace gas concentrations were measured during the QUEST field campaign in March–April, 2003, in Hyytiälä, Finland. Our aim was to understand the...

Atmospheric sulphuric acid and aerosol formation: implications from atmospheric measurements for nucleation and early growth mechanisms (2006)

M. Kulmala, M. Dal Maso, T. Petäjä, I. Riipinen, ...

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...

Atmospheric sulphuric acid and aerosol formation: implications from atmospheric measurements for nucleation and early growth mechanisms (2006)

M. Kulmala, M. Dal Maso, T. Petäjä, I. Riipinen, ...

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...

Ambient sesquiterpene concentration and its link to air ion measurements (2006)

B. Bonn, A. Hirsikko, H. Hakola, T. Kurtén, L. Laakso, M. Boy, ...

Ambient air ion size distributions have been measured continuously at the Finnish boreal forest site in Hyytiälä since spring 2003. In general, these measurements show a maximum of air ions below...

The contribution of sulphuric acid to atmospheric particle formation and growth: a comparison between boundary layers in Northern and Central Europe (2005)

V. Fiedler, M. Dal Maso, M. Boy, H. Aufmhoff, J. Hoffmann, T. Schuck, ...

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...

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...

On the growth of nucleation mode particles: source rates of condensable vapor in polluted and clean environments (2005)

M. Kulmala, T. Petäjä, P. Mönkkönen, I. K. Koponen, M. Dal Maso, P. P. Aalto, ...

The growth properties of nucleation mode particles were investigated. The variation of source rates of condensable vapors in different locations and environmental conditions was analyzed. The...

Sulphuric acid closure and contribution to nucleation mode particle growth (2005)

M. Boy, M. Kulmala, T. M. Ruuskanen, M. Pihlatie, A. Reissell, P. P. Aalto, ...

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)...

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/

The contribution of sulphuric acid to atmospheric particle formation and growth: a comparison between boundary layers in Northern and Central Europe (2005)

V. Fiedler, M. Dal Maso, M. Boy, H. Aufmhoff, J. Hoffmann, T. Schuck, ...

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...

Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002 (2004)

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...

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...

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...

Overview of the field measurement campaign in Hyytiälä, August 2001 in the framework of the EU project OSOA (2004)

M. Boy, T. Petäjä, M. Dal Maso, Ü. Rannik, J. Rinne, P. Aalto, ...

As part of the OSOA (Origin and formation of Secondary Organic Aerosols) project, two intensive field campaigns were conducted in Melpitz, Germany and Hyytiälä, Finland. This paper gives an...

Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998–2002 (2004)

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...

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...

Sulphuric acid closure and contribution to nucleation mode particle growth (2004)

M. Boy, M. Kulmala, T. M. Ruuskanen, M. Pihlatie, A. Reissell, P. P. Aalto, ...

Sulphuric acid concentrations were measured and calculated based on pseudo steady state model with corresponding measurements of CO, NO_x, O₃,...

On the growth of nucleation mode particles: source rates of condensable vapor in polluted and clean environments (2004)

M. Kulmala, T. Petäjä, P. Mönkkönen, I. K. Koponen, M. Dal Maso, P. P. Aalto, ...

The growth properties of nucleation mode particles were investigated. The variation of source rates of condensable vapors in different locations and environmental conditions was analyzed. The...

One year boundary layer aerosol size distribution data from five nordic background stations (2003)

P. Tunved, M. Kulmala, P. Aalto, Y. Viisanen, H. Karlsson, ...

Size distribution measurements performed at five different stations have been investigated during a one-year period between 01 June 2000 and 31 May 2001 with focus on diurnal, seasonal and...

One year boundary layer aerosol size distribution data from five Nordic background stations (2003)

P. Tunved, M. Kulmala, P. Aalto, Y. Viisanen, H. Karlsson, ...

Size distribution measurements performed at five different stations have been investigated during a one-year period between 01 June 2000 and 31 May 2001 with focus on diurnal, seasonal and...

Overview of the field measurement campaign in Hyytiälä, August 2001 in the framework of the EU project OSOA (2003)

M. Boy, T. Petäja, M. Dal Maso, Ü. Rannik, J. Rinne, P. Aalto, ...

As one part of the OSOA (Origin and formation of Secondary Organic Aerosols) project, two intensive field campaigns were conducted in Melpitz, Germany and Hyytiälä, Finland. This paper gives an...