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Showing 1 to 12 of 20 entries
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Solar eclipse demonstrating the importance of photochemistry in new particle formation.

Scientific reports

Jokinen T, Kontkanen J, Lehtipalo K, Manninen HE, Aalto J, Porcar-Castell A, Garmash O, Nieminen T, Ehn M, Kangasluoma J, Junninen H, Levula J, Duplissy J, Ahonen LR, Rantala P, Heikkinen L, Yan C, Sipilä M, Worsnop DR, Bäck J, Petäjä T, Kerminen VM, Kulmala M.
PMID: 28374761
Sci Rep. 2017 Apr 04;7:45707. doi: 10.1038/srep45707.

Solar eclipses provide unique possibilities to investigate atmospheric processes, such as new particle formation (NPF), important to the global aerosol load and radiative balance. The temporary absence of solar radiation gives particular insight into different oxidation and clustering processes...

Multicomponent new particle formation from sulfuric acid, ammonia, and biogenic vapors.

Science advances

Lehtipalo K, Yan C, Dada L, Bianchi F, Xiao M, Wagner R, Stolzenburg D, Ahonen LR, Amorim A, Baccarini A, Bauer PS, Baumgartner B, Bergen A, Bernhammer AK, Breitenlechner M, Brilke S, Buchholz A, Mazon SB, Chen D, Chen X, Dias A, Dommen J, Draper DC, Duplissy J, Ehn M, Finkenzeller H, Fischer L, Frege C, Fuchs C, Garmash O, Gordon H, Hakala J, He X, Heikkinen L, Heinritzi M, Helm JC, Hofbauer V, Hoyle CR, Jokinen T, Kangasluoma J, Kerminen VM, Kim C, Kirkby J, Kontkanen J, Kürten A, Lawler MJ, Mai H, Mathot S, Mauldin RL, Molteni U, Nichman L, Nie W, Nieminen T, Ojdanic A, Onnela A, Passananti M, Petäjä T, Piel F, Pospisilova V, Quéléver LLJ, Rissanen MP, Rose C, Sarnela N, Schallhart S, Schuchmann S, Sengupta K, Simon M, Sipilä M, Tauber C, Tomé A, Tröstl J, Väisänen O, Vogel AL, Volkamer R, Wagner AC, Wang M, Weitz L, Wimmer D, Ye P, Ylisirniö A, Zha Q, Carslaw KS, Curtius J, Donahue NM, Flagan RC, Hansel A, Riipinen I, Virtanen A, Winkler PM, Baltensperger U, Kulmala M, Worsnop DR.
PMID: 30547087
Sci Adv. 2018 Dec 12;4(12):eaau5363. doi: 10.1126/sciadv.aau5363. eCollection 2018 Dec.

A major fraction of atmospheric aerosol particles, which affect both air quality and climate, form from gaseous precursors in the atmosphere. Highly oxygenated organic molecules (HOMs), formed by oxidation of biogenic volatile organic compounds, are known to participate in...

Rapid growth of new atmospheric particles by nitric acid and ammonia condensation.

Nature

Wang M, Kong W, Marten R, He XC, Chen D, Pfeifer J, Heitto A, Kontkanen J, Dada L, Kürten A, Yli-Juuti T, Manninen HE, Amanatidis S, Amorim A, Baalbaki R, Baccarini A, Bell DM, Bertozzi B, Bräkling S, Brilke S, Murillo LC, Chiu R, Chu B, De Menezes LP, Duplissy J, Finkenzeller H, Carracedo LG, Granzin M, Guida R, Hansel A, Hofbauer V, Krechmer J, Lehtipalo K, Lamkaddam H, Lampimäki M, Lee CP, Makhmutov V, Marie G, Mathot S, Mauldin RL, Mentler B, Müller T, Onnela A, Partoll E, Petäjä T, Philippov M, Pospisilova V, Ranjithkumar A, Rissanen M, Rörup B, Scholz W, Shen J, Simon M, Sipilä M, Steiner G, Stolzenburg D, Tham YJ, Tomé A, Wagner AC, Wang DS, Wang Y, Weber SK, Winkler PM, Wlasits PJ, Wu Y, Xiao M, Ye Q, Zauner-Wieczorek M, Zhou X, Volkamer R, Riipinen I, Dommen J, Curtius J, Baltensperger U, Kulmala M, Worsnop DR, Kirkby J, Seinfeld JH, El-Haddad I, Flagan RC, Donahue NM.
PMID: 32405020
Nature. 2020 May;581(7807):184-189. doi: 10.1038/s41586-020-2270-4. Epub 2020 May 13.

A list of authors and their affiliations appears at the end of the paper New-particle formation is a major contributor to urban smog

The effect of adherence on cognition in a multidomain lifestyle intervention (FINGER).

Alzheimer's & dementia : the journal of the Alzheimer's Association

Ngandu T, Lehtisalo J, Korkki S, Solomon A, Coley N, Antikainen R, Bäckman L, Hänninen T, Lindström J, Laatikainen T, Paajanen T, Havulinna S, Peltonen M, Neely AS, Strandberg T, Tuomilehto J, Soininen H, Kivipelto M.
PMID: 34668644
Alzheimers Dement. 2021 Oct 20; doi: 10.1002/alz.12492. Epub 2021 Oct 20.

INTRODUCTION: Lifestyle interventions may prevent cognitive decline, but the sufficient dose of intervention activities and lifestyle changes is unknown. We investigated how intervention adherence affects cognition in the FINGER trial (pre-specified subgroup analyses).METHODS: FINGER is a multicenter randomized controlled...

Global atmospheric particle formation from CERN CLOUD measurements.

Science (New York, N.Y.)

Dunne EM, Gordon H, Kürten A, Almeida J, Duplissy J, Williamson C, Ortega IK, Pringle KJ, Adamov A, Baltensperger U, Barmet P, Benduhn F, Bianchi F, Breitenlechner M, Clarke A, Curtius J, Dommen J, Donahue NM, Ehrhart S, Flagan RC, Franchin A, Guida R, Hakala J, Hansel A, Heinritzi M, Jokinen T, Kangasluoma J, Kirkby J, Kulmala M, Kupc A, Lawler MJ, Lehtipalo K, Makhmutov V, Mann G, Mathot S, Merikanto J, Miettinen P, Nenes A, Onnela A, Rap A, Reddington CL, Riccobono F, Richards NA, Rissanen MP, Rondo L, Sarnela N, Schobesberger S, Sengupta K, Simon M, Sipilä M, Smith JN, Stozkhov Y, Tomé A, Tröstl J, Wagner PE, Wimmer D, Winkler PM, Worsnop DR, Carslaw KS.
PMID: 27789796
Science. 2016 Dec 02;354(6316):1119-1124. doi: 10.1126/science.aaf2649. Epub 2016 Oct 27.

Fundamental questions remain about the origin of newly formed atmospheric aerosol particles because data from laboratory measurements have been insufficient to build global models. In contrast, gas-phase chemistry models have been based on laboratory kinetics measurements for decades. We...

Direct observations of atmospheric aerosol nucleation.

Science (New York, N.Y.)

Kulmala M, Kontkanen J, Junninen H, Lehtipalo K, Manninen HE, Nieminen T, Petäjä T, Sipilä M, Schobesberger S, Rantala P, Franchin A, Jokinen T, Järvinen E, Äijälä M, Kangasluoma J, Hakala J, Aalto PP, Paasonen P, Mikkilä J, Vanhanen J, Aalto J, Hakola H, Makkonen U, Ruuskanen T, Mauldin RL, Duplissy J, Vehkamäki H, Bäck J, Kortelainen A, Riipinen I, Kurtén T, Johnston MV, Smith JN, Ehn M, Mentel TF, Lehtinen KE, Laaksonen A, Kerminen VM, Worsnop DR.
PMID: 23430652
Science. 2013 Feb 22;339(6122):943-6. doi: 10.1126/science.1227385.

Atmospheric nucleation is the dominant source of aerosol particles in the global atmosphere and an important player in aerosol climatic effects. The key steps of this process occur in the sub-2-nanometer (nm) size range, in which direct size-segregated observations...

Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation.

Nature

Kirkby J, Curtius J, Almeida J, Dunne E, Duplissy J, Ehrhart S, Franchin A, Gagné S, Ickes L, Kürten A, Kupc A, Metzger A, Riccobono F, Rondo L, Schobesberger S, Tsagkogeorgas G, Wimmer D, Amorim A, Bianchi F, Breitenlechner M, David A, Dommen J, Downard A, Ehn M, Flagan RC, Haider S, Hansel A, Hauser D, Jud W, Junninen H, Kreissl F, Kvashin A, Laaksonen A, Lehtipalo K, Lima J, Lovejoy ER, Makhmutov V, Mathot S, Mikkilä J, Minginette P, Mogo S, Nieminen T, Onnela A, Pereira P, Petäjä T, Schnitzhofer R, Seinfeld JH, Sipilä M, Stozhkov Y, Stratmann F, Tomé A, Vanhanen J, Viisanen Y, Vrtala A, Wagner PE, Walther H, Weingartner E, Wex H, Winkler PM, Carslaw KS, Worsnop DR, Baltensperger U, Kulmala M.
PMID: 21866156
Nature. 2011 Aug 24;476(7361):429-33. doi: 10.1038/nature10343.

Atmospheric aerosols exert an important influence on climate through their effects on stratiform cloud albedo and lifetime and the invigoration of convective storms. Model calculations suggest that almost half of the global cloud condensation nuclei in the atmospheric boundary...

Molecular characterization of ultrafine particles using extractive electrospray time-of-flight mass spectrometry.

Environmental science: atmospheres

Surdu M, Pospisilova V, Xiao M, Wang M, Mentler B, Simon M, Stolzenburg D, Hoyle CR, Bell DM, Lee CP, Lamkaddam H, Lopez-Hilfiker F, Ahonen LR, Amorim A, Baccarini A, Chen D, Dada L, Duplissy J, Finkenzeller H, He XC, Hofbauer V, Kim C, Kürten A, Kvashnin A, Lehtipalo K, Makhmutov V, Molteni U, Nie W, Onnela A, Petäjä T, Quéléver LLJ, Tauber C, Tomé A, Wagner R, Yan C, Prevot ASH, Dommen J, Donahue NM, Hansel A, Curtius J, Winkler PM, Kulmala M, Volkamer R, Flagan RC, Kirkby J, Worsnop DR, Slowik JG, Wang DS, Baltensperger U, El Haddad I.
PMID: 34604755
Environ Sci Atmos. 2021 Aug 23;1(6):434-448. doi: 10.1039/d1ea00050k. eCollection 2021 Sep 23.

Aerosol particles negatively affect human health while also having climatic relevance due to, for example, their ability to act as cloud condensation nuclei. Ultrafine particles (diameter

Effect of dimethylamine on the gas phase sulfuric acid concentration measured by Chemical Ionization Mass Spectrometry.

Journal of geophysical research. Atmospheres : JGR

Rondo L, Ehrhart S, Kürten A, Adamov A, Bianchi F, Breitenlechner M, Duplissy J, Franchin A, Dommen J, Donahue NM, Dunne EM, Flagan RC, Hakala J, Hansel A, Keskinen H, Kim J, Jokinen T, Lehtipalo K, Leiminger M, Praplan A, Riccobono F, Rissanen MP, Sarnela N, Schobesberger S, Simon M, Sipilä M, Smith JN, Tomé A, Tröstl J, Tsagkogeorgas G, Vaattovaara P, Winkler PM, Williamson C, Wimmer D, Baltensperger U, Kirkby J, Kulmala M, Petäjä T, Worsnop DR, Curtius J.
PMID: 27610289
J Geophys Res Atmos. 2016 Mar 27;121(6):3036-3049. doi: 10.1002/2015JD023868. Epub 2016 Mar 24.

Sulfuric acid is widely recognized as a very important substance driving atmospheric aerosol nucleation. Based on quantum chemical calculations it has been suggested that the quantitative detection of gas phase sulfuric acid (H

Changes in Lifestyle, Behaviors, and Risk Factors for Cognitive Impairment in Older Persons During the First Wave of the Coronavirus Disease 2019 Pandemic in Finland: Results From the FINGER Study.

Frontiers in psychiatry

Lehtisalo J, Palmer K, Mangialasche F, Solomon A, Kivipelto M, Ngandu T.
PMID: 33643095
Front Psychiatry. 2021 Feb 12;12:624125. doi: 10.3389/fpsyt.2021.624125. eCollection 2021.

No abstract available.

Comparison of the SAWNUC model with CLOUD measurements of sulphuric acid-water nucleation.

Journal of geophysical research. Atmospheres : JGR

Ehrhart S, Ickes L, Almeida J, Amorim A, Barmet P, Bianchi F, Dommen J, Dunne EM, Duplissy J, Franchin A, Kangasluoma J, Kirkby J, Kürten A, Kupc A, Lehtipalo K, Nieminen T, Riccobono F, Rondo L, Schobesberger S, Steiner G, Tomé A, Wimmer D, Baltensperger U, Wagner PE, Curtius J.
PMID: 28239533
J Geophys Res Atmos. 2016 Oct 27;121(20):12401-12414. doi: 10.1002/2015JD023723.

Binary nucleation of sulphuric acid-water particles is expected to be an important process in the free troposphere at low temperatures. SAWNUC (Sulphuric Acid Water Nucleation) is a model of binary nucleation that is based on laboratory measurements of the...

The effect of acid-base clustering and ions on the growth of atmospheric nano-particles.

Nature communications

Lehtipalo K, Rondo L, Kontkanen J, Schobesberger S, Jokinen T, Sarnela N, Kürten A, Ehrhart S, Franchin A, Nieminen T, Riccobono F, Sipilä M, Yli-Juuti T, Duplissy J, Adamov A, Ahlm L, Almeida J, Amorim A, Bianchi F, Breitenlechner M, Dommen J, Downard AJ, Dunne EM, Flagan RC, Guida R, Hakala J, Hansel A, Jud W, Kangasluoma J, Kerminen VM, Keskinen H, Kim J, Kirkby J, Kupc A, Kupiainen-Määttä O, Laaksonen A, Lawler MJ, Leiminger M, Mathot S, Olenius T, Ortega IK, Onnela A, Petäjä T, Praplan A, Rissanen MP, Ruuskanen T, Santos FD, Schallhart S, Schnitzhofer R, Simon M, Smith JN, Tröstl J, Tsagkogeorgas G, Tomé A, Vaattovaara P, Vehkamäki H, Vrtala AE, Wagner PE, Williamson C, Wimmer D, Winkler PM, Virtanen A, Donahue NM, Carslaw KS, Baltensperger U, Riipinen I, Curtius J, Worsnop DR, Kulmala M.
PMID: 27197574
Nat Commun. 2016 May 20;7:11594. doi: 10.1038/ncomms11594.

The growth of freshly formed aerosol particles can be the bottleneck in their survival to cloud condensation nuclei. It is therefore crucial to understand how particles grow in the atmosphere. Insufficient experimental data has impeded a profound understanding of...

Showing 1 to 12 of 20 entries