Search filters

List of works by Tuukka Petäjä

A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites

scholarly article

A European aerosol phenomenology-6: Scattering properties of atmospheric aerosol particles from 28 ACTRIS sites

A central arctic extreme aerosol event triggered by a warm air-mass intrusion

scientific article published in 2022

A comparison of HONO budgets for two measurement heights at a field station within the boreal forest in Finland

scholarly article

A complete methodology for the reliable collection, sample preparation, separation and determination of organic compounds in ultrafine 30 nm, 40 nm and 50 nm atmospheric aerosol particles

article

A high-resolution mass spectrometer to measure atmospheric ion composition

scientific article published in 2010

A large source of low-volatility secondary organic aerosol

scientific article published in February 2014

A new atmospherically relevant oxidant of sulphur dioxide.

scientific article

A new high transmission inlet for the Caltech nano-RDMA for size distribution measurements of sub-3 nm ions at ambient concentrations

article

A new high-transmission inlet for the Caltech nano-RDMA for size distribution measurements of sub-3 nm ions at ambient concentrations

article

A review of the anthropogenic influence on biogenic secondary organic aerosol

scholarly article

A statistical proxy for sulphuric acid concentration

scholarly article

A synthesis of cloud condensation nuclei counter (CCNC) measurements within the EUCAARI network

scholarly article

Adsorptive uptake of water by semisolid secondary organic aerosols

article

Aerosol Optical Properties at SORPES in Nanjing, East China

scientific article

Aerosol charging state at an urban site: new analytical approach and implications for ion-induced nucleation

scholarly article

Aerosol hygroscopicity and CCN activation kinetics in a boreal forest environment during the 2007 EUCAARI campaign

scholarly article

Aerosol optical properties at SORPES in Nanjing, east China

scientific article

Aerosol optical properties calculated from size distributions, filter samples and absorption photometer data at Dome C, Antarctica and their relationships between seasonal cycles of sources

scholarly article

Aerosol size distribution and new particle formation in the western Yangtze River Delta of China: 2 years of measurements at the SORPES station

scholarly article

Aerosols and nucleation in eastern China: first insights from the new SORPES-NJU station

scholarly article

Aerosols physical properties at Hada Al Sham, western Saudi Arabia

Air Ion Measurements at Mace Head on the West Coast of Ireland

scientific article

Aliphatic and aromatic amines in atmospheric aerosol particles: comparison of three ionization techniques in liquid chromatography-mass spectrometry and method development

scientific article

Amazon boundary layer aerosol concentration sustained by vertical transport during rainfall

scientific article

Ambient measurements of aromatic and oxidized VOCs by PTR-MS and GC-MS: intercomparison between four instruments in a boreal forest in Finland

article

Ambient observations of dimers from terpene oxidation in the gas phase: Implications for new particle formation and growth

scholarly article

An Instrumental Comparison of Mobility and Mass Measurements of Atmospheric Small Ions

article

Analysis of aerosol effects on warm clouds over the Yangtze River Delta from multi-sensor satellite observations

scholarly article

Analysis of one year of Ion-DMPS data from the SMEAR II station, Finland

scientific article published on 17 December 2012

Annual cycle in scots pine's photosynthesis

article by Pertti Hari et al published 7 July 2017 in Atmospheric Chemistry and Physics Discussions

Annual cycle of Scots pine photosynthesis

scholarly article

Anthropogenic and biogenic influence on VOC fluxes at an urban background site in Helsinki, Finland

scholarly article

Applicability of an integrated plume rise model for the dispersion from wild-land fires

article

Applicability of condensation particle counters to measure atmospheric clusters

scholarly article

Applying the Condensation Particle Counter Battery (CPCB) to study the water-affinity of freshly-formed 2–9 nm particles in boreal forest

scholarly article

Arctic air pollution: Challenges and opportunities for the next decade

scholarly article by S.R. Arnold et al published 19 May 2016 in Elementa: Science of the Anthropocene

Arctic observations and sustainable development goals – Contributions and examples from ERA-PLANET iCUPE data

scientific article published in 2022

Assessing volatile organic compound sources in a boreal forest using positive matrix factorization (PMF)

scientific article published in 2021

Atmospheric Charged and Total Particle Formation Rates below 3 nm

scientific article

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

scholarly article

Atmospheric electricity and aerosol-cloud interactions in earth’s atmosphere

Atmospheric gas-to-particle conversion: why NPF events are observed in megacities?

scientific article

Atmospheric ions and nucleation: a review of observations

scholarly article

Atmospheric ions and nucleation: a review of observations

Atmospheric new particle formation and growth: review of field observations

article

Atmospheric new particle formation as a source of CCN in the eastern Mediterranean marine boundary layer

scholarly article

Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity

scientific article published in Science

Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity

scientific article published on 19 July 2018

Atmospheric new particle formation in China

article

Atmospheric nucleation: highlights of the EUCAARI project and future directions

scholarly article

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

Atmospheric sulphuric acid and neutral cluster measurements using CI-APi-TOF

scholarly article

Automated identification of local contamination in remote atmospheric composition time series

scientific article published in 2022

BAECC: A Field Campaign to Elucidate the Impact of Biogenic Aerosols on Clouds and Climate

Basic characteristics of atmospheric particles, trace gases and meteorology in a relatively clean Southern African Savannah environment

scholarly article

Biogenic and biomass burning organic aerosol in a boreal forest at Hyytiälä, Finland, during HUMPPA-COPEC 2010

scholarly article

Biogenic and biomass burning organic aerosol in a boreal forest at Hyytiälä, Finland, during HUMPPA-COPEC 2010

scholarly article by A. L. Corrigan et al published 15 June 2013 in Atmospheric Chemistry and Physics Discussions

Bisulfate – cluster based atmospheric pressure chemical ionization mass spectrometer for high-sensitivity (< 100 ppqV) detection of atmospheric dimethyl amine: proof-of-concept and first ambient data from boreal forest

Black carbon concentration and deposition estimations in Finland by the regional aerosol–climate model REMO-HAM

scholarly article

Carbon clusters in 50nm urban air aerosol particles quantified by laser desorption–ionization aerosol mass spectrometer

Changes in concentration of nitrogen-containing compounds in 10nm particles of boreal forest atmosphere at snowmelt

Characterisation of corona-generated ions used in a Neutral cluster and Air Ion Spectrometer (NAIS)

article

Characteristic features of air ions at Mace Head on the west coast of Ireland

Characterization of a Herrmann-type high-resolution differential mobility analyzer

journal article; published in Aerosol Science and Technology in 2016

Characterization of diethylene glycol-condensation particle counters for detection of sub-3 nm particles

Characterization of parameters influencing the spatio-temporal variability of urban particle number size distributions in four European cities

Characterization of three new condensation particle counters for sub-3 nm particle detection during the Helsinki CPC workshop: the ADI versatile water CPC, TSI 3777 nano enhancer and boosted TSI 3010

Charging state of the atmospheric nucleation mode: Implications for separating neutral and ion-induced nucleation

scientific article

Chemical investigation and quality of urban dew collections with dust precipitates

scientific article published on 29 March 2017

Chemical transformations in monoterpene-derived organic aerosol enhanced by inorganic composition

article

Chemistry of atmospheric nucleation: on the recent advances on precursor characterization and atmospheric cluster composition in connection with atmospheric new particle formation

scientific article

City Wide Participatory Sensing of Air Quality

scientific article published in 2021

Climatic Factors Influencing the Anthrax Outbreak of 2016 in Siberia, Russia

scientific article published on 28 August 2021

Climatic implications of the Brazilian biofuel transition

article

Cloud condensation nuclei production associated with atmospheric nucleation: a synthesis based on existing literature and new results

scholarly article

Cluster formation mechanisms of titanium dioxide during combustion synthesis: Observation with an APi-TOF

scholarly article by Jiaxi Fang et al published 16 May 2017 in Aerosol Science and Technology

Collocated observations of cloud condensation nuclei, particle size distributions, and chemical composition

scientific article published on 14 March 2017

Combined effects of boundary layer dynamics and atmospheric chemistry on aerosol composition during new particle formation periods

scholarly article

Combined effects of boundary layer dynamics and atmospheric chemistry on aerosol composition during new particle formation periods

Comparison of MODIS and VIIRS cloud properties with ARM ground-based observations over Finland

scholarly article by Moa K. Sporre et al published 21 July 2016 in Atmospheric Measurement Techniques

Comparison of MODIS and VIIRS cloud properties with ARM ground-based observations over Finland

scholarly article by Moa K. Sporre et al published 16 February 2016 in Atmospheric measurement techniques discussions

Comparison of ambient aerosol extinction coefficients obtained from in-situ, MAX-DOAS and LIDAR measurements at Cabauw

scholarly article

Comparison of particle number size distribution trends in ground measurements and climate models

scientific article published on 6 October 2022

Comparison of quartz and Teflon filters for simultaneous collection of size-separated ultrafine aerosol particles and gas-phase zero samples.

scientific article

Composition and temporal behavior of ambient ions in the boreal forest

scholarly article

Comprehensive modelling study on observed new particle formation at the SORPES station in Nanjing, China

scholarly article

Comprehensive two-dimensional gas chromatography, a valuable technique for screening and semiquantitation of different chemical compounds in ultrafine 30 nm and 50 nm aerosol particles.

scientific article

Conceptual design of a measurement network of the global change

scholarly article

Connecting ground-based in-situ observations, ground-based remote sensing and satellite data within the Pan Eurasian Experiment (PEEX) program

Connection of sulfuric acid to atmospheric nucleation in boreal forest

scientific article published in July 2009

Contrasting Organic Aerosol Behaviour in Continental Polluted, Biomass Burning and Pristine Tropical Forest Environments

scientific article

Contrasting organic aerosol particles from boreal and tropical forests during HUMPPA-COPEC-2010 and AMAZE-08 using coherent vibrational spectroscopy

scholarly article

Contribution of sulfuric acid and oxidized organic compounds to particle formation and growth

scholarly article

Correction to “Relationship between aerosol oxidation level and hygroscopic properties of laboratory generated secondary organic aerosol (SOA) particles”

scholarly article published in Geophysical Research Letters

Corrigendum: Collocated observations of cloud condensation nuclei, particle size distributions, and chemical composition.

scientific article published on 8 May 2018

Corrigendum: Polluted dust promotes new particle formation and growth

scientific article published on 4 March 2015

Counting Efficiency of a TSI Environmental Particle Counter Monitor Model 3783

article

Detecting charging state of ultra-fine particles: instrumental development and ambient measurements

Detection Efficiency of a Water-Based TSI Condensation Particle Counter 3785

Determination of the biogenic secondary organic aerosol fraction in the boreal forest by NMR spectroscopy

scholarly article

Differences in aerosol absorption Ångström exponents between correction algorithms for a particle soot absorption photometer measured on the South African Highveld

scholarly article by J. Backman et al published 8 December 2014 in Atmospheric Measurement Techniques

Differing Mechanisms of New Particle Formation at Two Arctic Sites

scientific article published on 20 February 2021

Direct Observations of Atmospheric Aerosol Nucleation

scientific article published in Science

Direct effect of aerosols on solar radiation and gross primary production in boreal and hemiboreal forests

scholarly article

Direct observation of molecular clusters and nucleation mode particles in the Amazon

article by Daniela Wimmer et al published 24 August 2017 in Atmospheric Chemistry and Physics Discussions

Diurnal evolution of negative atmospheric ions above the boreal forest: from ground level to the free troposphere

scientific article published in 2022

Do We Miss Fragile Particles in Particle Size Distribution Measurements?

scientific article

Do small spores disperse further than large spores?

scientific article published on June 2014

Does the onset of new particle formation occur in the planetary boundary layer?

EUCAARI ion spectrometer measurements at 12 European sites – analysis of new particle formation events

scholarly article

Effect of chemical degradation on fluxes of reactive compounds – a study with a stochastic Lagrangian transport model

scholarly article

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

scientific article

Effect of ions on sulfuric acid-water binary particle formation: 2. Experimental data and comparison with QC-normalized classical nucleation theory

scientific article

Effect of salt formation on condensation of organic compounds on atmospheric nanoparticles

article

Effects of SO<sub>2</sub> oxidation on ambient aerosol growth in water and ethanol vapours

scientific article

Effects of chemical complexity on the autoxidation mechanisms of endocyclic alkene ozonolysis products: from methylcyclohexenes toward understanding α-pinene

scientific article

Effects of different correction algorithms on absorption coefficient – a comparison of three optical absorption photometers at a boreal forest site

scientific article published in 2021

Eight years of sub-micrometre organic aerosol composition data from the boreal forest characterized using a machine-learning approach

scientific article published in 2021

Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface

scientific article published in 2022

Enhanced Volatile Organic Compounds emissions and organic aerosol mass increase the oligomer content of atmospheric aerosols

scientific article published on 13 October 2016

Enhanced air pollution via aerosol-boundary layer feedback in China

scientific article

Enhanced haze pollution by black carbon in megacities in China

article

Enhanced sulfate formation by nitrogen dioxide: Implications from in situ observations at the SORPES station

Enhancement of atmospheric H<sub>2</sub>SO<sub>4</sub> / H<sub>2</sub>O nucleation: organic oxidation products versus amines

scholarly article

Erratum to: On secondary new particle formation in China

article

Estimates of global dew collection potential on artificial surfaces

article

Estimates of the organic aerosol volatility in a boreal forest using two independent methods

scholarly article

Estimating CCN number concentrations using aerosol optical properties: Role of particle number size distribution and parameterization

scientific article

Estimating cloud condensation nuclei number concentrations using aerosol optical properties: role of particle number size distribution and parameterization

Estimating the atmospheric concentration of Criegee intermediates and their possible interference in a FAGE-LIF instrument

scholarly article

Estimating the contribution of organic acids to northern hemispheric continental organic aerosol

article

Estimation of aerosol particle number distribution with Kalman Filtering – Part 2: Simultaneous use of DMPS, APS and nephelometer measurements

scholarly article

Estimation of aerosol particle number distributions with Kalman Filtering – Part 1: Theory, general aspects and statistical validity

scholarly article

Estimation of atmospheric particle formation rates through an analytical formula: Validation and application in Hyytiälä and Puijo, Finland

scientific article published on 9 January 2017

Estimation of atmospheric particle formation rates through an analytical formula: validation and application in Hyytiälä and Puijo, Finland

scientific article published on 10 November 2017

Evaporation of sulfate aerosols at low relative humidity

scholarly article

Evidence of an elevated source of nucleation based on model simulations and data from the NIFTy experiment

scholarly article

Evolution of nanoparticle composition in CLOUD in presence of sulphuric acid, ammonia and organics

article

Evolution of particle composition in CLOUD nucleation experiments

scholarly article

Evolution of α-pinene oxidation products in the presence of varying oxidizers: Negative APi-TOF point of view

Experimental Observation of Strongly Bound Dimers of Sulfuric Acid: Application to Nucleation in the Atmosphere

scientific article published in Physical Review Letters

Experimental investigation of ion–ion recombination under atmospheric conditions

scholarly article

Experimental particle formation rates spanning tropospheric sulfuric acid and ammonia abundances, ion production rates, and temperatures

article

Factors influencing the contribution of ion-induced nucleation in a boreal forest, Finland

scholarly article

Features in air ions measured by an air ion spectrometer (AIS) at Dome C

scholarly article

Ferroelectric Transition Vanishes in (NH4)2SO4 Precipitated in Small-Sized Aqueous Droplets

Fire and vegetation dynamics in northwest Siberia during the last 60 years based on high-resolution remote sensing

scientific article published in 2021

First measurements of reactive α-dicarbonyl concentrations on PM<sub>2.5</sub> aerosol over the Boreal forest in Finland during HUMPPA-COPEC 2010 – source apportionment and links to aerosol aging

scholarly article

First measurements of the number size distribution of 1–2 nm aerosol particles released from manufacturing processes in a cleanroom environment

Fluxes of carbon dioxide and water vapour over Scots pine forest and clearing

article by Üllar Rannik et al published May 2002 in Agricultural and Forest Meteorology

Formation and growth of sub-3-nm aerosol particles in experimental chambers

scientific article published on 12 February 2020

Formation and growth rates of ultrafine atmospheric particles: a review of observations

article

GROUND-BASED STATION NETWORK IN ARCTIC AND SUBARCTIC EURASIA: AN OVERVIEW

article published in 2016

Gas phase formation of extremely oxidized pinene reaction products in chamber and ambient air

scholarly article

Gas-Phase Ozonolysis of Selected Olefins: The Yield of Stabilized Criegee Intermediate and the Reactivity toward SO2

Genotype and spatial structure shape pathogen dispersal and disease dynamics at small spatial scales

scientific article published on March 2014

Global Air Quality and COVID-19 Pandemic: Do We Breathe Cleaner Air?

Global analysis of continental boundary layer new particle formation based on long-term measurements

scientific article published on 12 October 2018

Ground-based observation of clusters and nucleation-mode particles in the Amazon

scholarly article

Growth rates during coastal and marine new particle formation in western Ireland

scholarly article

Growth rates of nucleation mode particles in Hyytiälä during 2003−2009: variation with particle size, season, data analysis method and ambient conditions

scholarly article

Heterogeneous Nucleation onto Ions and Neutralized Ions: Insights into Sign-Preference

High concentrations of sub-3 nm clusters and frequent new particle formation observed in the Po Valley, Italy, during the PEGASOS 2012 campaign

preprint

High concentrations of sub-3nm clusters and frequent new particle formation observed in the Po Valley, Italy, during the PEGASOS 2012 campaign

scholarly article

High emission rates and strong temperature response make boreal wetlands a large source of isoprene and terpenes

scientific article published in 2023

High-Resolution Mobility and Mass Spectrometry of Negative Ions Produced in a241Am Aerosol Charger

article

High-performance and sustainable aerosol filters based on hierarchical and crosslinked nanofoams of cellulose nanofibers

scientific article published in August 2021

Highly oxidized organic aerosols in Beijing: Possible contribution of aqueous-phase chemistry

scientific article published in March 2022

Homogenous nucleation of sulfuric acid and water at close to atmospherically relevant conditions

scholarly article

Horizontal homogeneity and vertical extent of new particle formation events

How do air ions reflect variations in ionising radiation in the lower atmosphere in a boreal forest?

scholarly article

How to Utilise the Knowledge of Causal Responses?

article

How to reliably detect molecular clusters and nucleation mode particles with Neutral cluster and Air Ion Spectrometer (NAIS)

Hygroscopic properties and cloud condensation nuclei activation of limonene-derived organosulfates and their mixtures with ammonium sulfate

scholarly article

Hygroscopic properties of submicrometer atmospheric aerosol particles measured with H-TDMA instruments in various environments—a review

article

Hygroscopic properties of ultrafine aerosol particles in the boreal forest: diurnal variation, solubility and the influence of sulfuric acid

scholarly article

Hygroscopicity of nanoparticles produced from homogeneous nucleation in the CLOUD experiments

scholarly article

Hygroscopicity of nanoparticles produced from homogeneous nucleation in the CLOUD experiments

scientific article published on 20 July 2015

Hygroscopicity of sub-6 nm sodium chloride particles

article

Hygroscopicity, CCN and volatility properties of submicron atmospheric aerosol in a boreal forest environment during the summer of 2010

scholarly article

Identification and quantification of particle growth channels during new particle formation

article published in 2013

Identification and quantification of particle growth channels during new particle formation

scholarly article

Impact of pyruvic acid photolysis on acetaldehyde and peroxy radical formation in the boreal forest: theoretical calculations and model results

scientific article published in 2021

Impact on short-lived climate forcers increases projected warming due to deforestation.

scientific article published on 11 January 2018

Impacts of volatilisation on light scattering and filter-based absorption measurements: a case study

Improving Particle Detection Effi ciency of a Condensation Particle Counter by Means of Pulse Height Analysis

scientific article

In situ formation and spatial variability of particle number concentration in a European megacity

scholarly article

In situ submicron organic aerosol characterization at a boreal forest research station during HUMPPA-COPEC 2010 using soft and hard ionization mass spectrometry

scholarly article

In-situ observations of Eyjafjallajökull ash particles by hot-air balloon

article published in 2012

Influence of biogenic emissions from boreal forests on aerosol–cloud interactions

scientific article published in 2021

Influence of biomass burning plumes on HONO chemistry in eastern China

scholarly article

Influence of temperature on the molecular composition of ions and charged clusters during pure biogenic nucleation

scholarly article

Influence of temperature on the molecular composition of ions and charged clusters during pure biogenic nucleation

Influence of the sampling site, the season of the year, the particle size and the number of nucleation events on the chemical composition of atmospheric ultrafine and total suspended particles

article

Input-Adaptive Proxy for Black Carbon as a Virtual Sensor

scientific article published on 28 December 2019

Insight into acid-base nucleation experiments by comparison of the chemical composition of positive, negative, and neutral clusters

scientific article

Insights into HO<sub><i>x</i></sub> and RO<sub><i>x</i></sub> chemistry in the boreal forest via measurement of peroxyacetic acid, peroxyacetic nitric anhydride (PAN) and hydrogen peroxide

scholarly article

Intense atmospheric pollution modifies weather: a case of mixed biomass burning with fossil fuel combustion pollution in eastern China

scholarly article

Intercomparison of air ion spectrometers: an evaluation of results in varying conditions

Introduction: The Pan-Eurasian Experiment (PEEX) – multidisciplinary, multiscale and multicomponent research and capacity-building initiative

scholarly article

Investigating the Chemical Composition of Growing Nucleation Mode Particles with CPC Battery

scientific article

Iodine oxoacids enhance nucleation of sulfuric acid particles in the atmosphere

scientific article published on 14 December 2023

Ion Mobility-Mass Spectrometry of Iodine Pentoxide-Iodic Acid Hybrid Cluster Anions in Dry and Humidified Atmospheres

scientific article published on 08 April 2019

Ion generation and CPC detection efficiency studies in sub 3-nm size range

Ion production rate in a boreal forest based on ion, particle and radiation measurements

scientific article

Ion-induced nucleation of pure biogenic particles.

scientific article

Ion-induced sulfuric acid–ammonia nucleation drives particle formation in coastal Antarctica

scientific article published on 28 November 2018

Is reducing new particle formation a plausible solution to mitigate particulate air pollution in Beijing and other Chinese megacities?

scientific article published on 08 December 2020

Laboratory Verification of PH-CPC's Ability to Monitor Atmospheric Sub-3 nm Clusters

Laboratory characterization of a size-resolved CPC battery to infer the composition of freshly formed atmospheric nuclei

article

Laboratory study on new particle formation from the reaction OH + SO 2 : influence of experimental conditions, H 2 O vapour, NH 3 and the amine tert-butylamine on the overall process

scholarly article

Liquid chromatography-dopant-assisted atmospheric pressure photoionization-mass spectrometry: Application to the analysis of aldehydes in atmospheric aerosol particles.

scientific article

Local Air Pollution versus Short–range Transported Dust Episodes: A Comparative Study for Submicron Particle Number Concentration

scholarly article by Tareq Hussein et al published 2011 in Aerosol and Air Quality Research

Long-term aerosol and trace gas measurements in Eastern Lapland, Finland: The impact of Kola air pollution to new particle formation

scholarly article published 2013

Long-term analysis of clear-sky new particle formation events and nonevents in Hyytiälä

scholarly article

Long-term cloud condensation nuclei number concentration, particle number size distribution and chemical composition measurements at regionally representative observatories

scholarly article

Long-term measurements of volatile organic compounds highlight the importance of sesquiterpenes for the atmospheric chemistry of a boreal forest

scholarly article

Long-term observation of air pollution-weather/climate interactions at the SORPES station: a review and outlook

article

Long-term observations of the background aerosol at Cabauw, The Netherlands

scientific article published on 3 January 2018

Long-term size-segregated cloud condensation nuclei counter (CCNc) measurements in a boreal environment and the implications for aerosol-cloud interactions

article published in 2013

Long-term trends in PM2.5 mass and particle number concentrations in urban air: The impacts of mitigation measures and extreme events due to changing climates

scientific article published on 02 April 2020

Long-term volatility measurements of submicron atmospheric aerosol in Hyytiälä, Finland

scholarly article

Low hygroscopic scattering enhancement of boreal aerosol and the implications for a columnar optical closure study

scholarly article

Marine Aerosol and Secondary Particle Formation over the North Atlantic

scientific article

Measured Neutral and Charged Aerosol Particle Number Size Distributions in Russia

scientific article

Measurement of the Charging State with an Ion-DMPS to Estimate the Contribution of Ion-induced Nucleation

scientific article

Measurement of the nucleation of atmospheric aerosol particles

scientific article published on 16 August 2012

Measurement report: Introduction to the HyICE-2018 campaign for measurements of ice-nucleating particles and instrument inter-comparison in the Hyytiälä boreal forest

scientific article published in 2022

Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest

scientific article published in 2022

Measurement-model comparison of stabilized Criegee Intermediate and Highly Oxygenated Molecule production in the CLOUD chamber

Measurements of cluster ions using a nano radial DMA and a particle size magnifier in CLOUD

Measurements of ocean derived aerosol off the coast of California

scholarly article

Measurements of sub-3 nm particles using a particle size magnifier in different environments: from clean mountain top to polluted megacities

scholarly article

Measurement–model comparison of stabilized Criegee intermediate and highly oxygenated molecule production in the CLOUD chamber

scholarly article

Measuring composition and growth of ion clusters of sulfuric acid, ammonia, amines and oxidized organics as first steps of nucleation in the CLOUD experiment

article

Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere

scientific article published in 2022

Micrometeorological Observations of a Microburst in Southern Finland

scholarly article by Leena Järvi et al published 14 July 2007 in Boundary-Layer Meteorology

Micrometeorological observations of a microburst in southern Finland

scholarly article

Microphysical explanation of the RH-dependent water affinity of biogenic organic aerosol and its importance for climate.

scientific article published on 21 May 2017

Mobile Aerosol Measurement in the Eastern Mediterranean – A Utilization of Portable Instruments

Model for acid-base chemistry in nanoparticle growth (MABNAG)

scholarly article

Modeling regional deposited dose of submicron aerosol particles.

scientific article

Modeling the thermodynamics and kinetics of sulfuric acid-dimethylamine-water nanoparticle growth in the CLOUD chamber

Modelling the dispersion of particle numbers in five European cities

scientific article published in 2016

Molecular Composition and Volatility of Nucleated Particles from α-Pinene Oxidation between -50 °C and +25 °C

scientific article published on 08 October 2019

Molecular identification of organic vapors driving atmospheric nanoparticle growth

scientific article published on 30 September 2019

Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized organic molecules

scientific article published on 07 October 2013

Molecular understanding of sulphuric acid-amine particle nucleation in the atmosphere

scientific article published on 6 October 2013

Molecular-scale evidence of aerosol particle formation via sequential addition of HIO3.

scientific article published on 31 August 2016

Monitoring of ticks and tick-borne pathogens through a nationwide research station network in Finland

scientific article published on 12 May 2020

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

scientific article published on 12 December 2018

Multivariate model-based investigation of the temperature dependence of ozone concentration in Finnish boreal forest

scientific article published in 2022

Nanoparticles in boreal forest and coastal environment: a comparison of observations and implications of the nucleation mechanism

scholarly article

Neutral molecular cluster formation of sulfuric acid-dimethylamine observed in real time under atmospheric conditions

scientific article

New Particle Formation in Clean Savannah Environment

scientific article

New particle formation at urban and high-altitude remote sites in the south-eastern Iberian Peninsula

scholarly article

New particle formation at urban and high-altitude remote sites in the south-eastern Iberian Peninsula

New particle formation in Beijing, China: Statistical analysis of a 1-year data set

article

New particle formation in the free troposphere: A question of chemistry and timing.

scientific article published on 25 May 2016

Non-linear models for black carbon exposure modelling using air pollution datasets

scientific article published in 2022

Non-volatile residuals of newly formed atmospheric particles in the boreal forest

scholarly article

Novel estimation of aerosol processes with particle size distribution measurements: a case study with TOMAS algorithm

Nucleation rate and vapor concentration estimations using a least squares aerosol dynamics method

article

Observation and modelling of HO<sub>x</sub> radicals in a boreal forest

scholarly article

Observation of incipient particle formation during flame synthesis by tandem differential mobility analysis-mass spectrometry (DMA-MS)

article

Observation of viscosity transition in α-pinene secondary organic aerosol

scholarly article

Observations of Nano-CN in the Nocturnal Boreal Forest

scholarly article by Katrianne Lehtipalo et al published 10 March 2011 in Aerosol Science and Technology

Observations of biogenic ion-induced cluster formation in the atmosphere.

scientific article published on 25 April 2018

Observations of biomass burning smoke from Russian wild fire episodes in Finland 2010

scholarly article published 2013

Observations of climate impacts of cutover peatland afforestation, and peatland forest restoration, in Finland

scientific article published on 22 February 2023

Observations of ozone depletion events in a Finnish boreal forest

scholarly article

Observations of ozone depletion events in a Finnish boreal forest

Observing wind, aerosol particles, cloud and precipitation: Finland's new ground-based remote-sensing network

scholarly article by A. Hirsikko et al published 19 May 2014 in Atmospheric Measurement Techniques

On Operation of the Ultra-Fine Water-Based CPC TSI 3786 and Comparison with Other TSI Models (TSI 3776, TSI 3772, TSI 3025, TSI 3010, TSI 3007)

article

On Water Condensation Particle Counters and their Applicability to Field Measurements

scientific article

On atmospheric neutral and ion clusters observed in Hyytiälä spring 2011

article

On secondary new particle formation in China

article

On the Quantitative Low-Level Aerosol Measurements Using Ceilometer-Type Lidar

On the benefits of comprehensive long-term observations of atmospheric nanoparticles, clusters and ions

On the composition of ammonia–sulfuric-acid ion clusters during aerosol particle formation

scholarly article

On the diurnal cycle of urban aerosols, black carbon and the occurrence of new particle formation events in springtime São Paulo, Brazil

scholarly article

On the formation of sulphuric acid – amine clusters in varying atmospheric conditions and its influence on atmospheric new particle formation

scholarly article

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

scientific article

On the interpretation of the loading correction of the aethalometer

scientific article

On the interpretation of the loading correction of the aethalometer

article

On the roles of sulphuric acid and low-volatility organic vapours in the initial steps of atmospheric new particle formation

scholarly article

On the time response determination of condensation particle counters

journal article; published in Aerosol Science and Technology in 2018

Online atmospheric pressure chemical ionization ion trap mass spectrometry (APCI-IT-MS n ) for measuring organic acids in concentrated bulk aerosol – a laboratory and field study

scholarly article by A. L. Vogel et al published 30 August 2012 in Atmospheric measurement techniques discussions

Online atmospheric pressure chemical ionization ion trap mass spectrometry (APCI-IT-MS<sup>n</sup>) for measuring organic acids in concentrated bulk aerosol – a laboratory and field study

Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts.

scientific article

Operation of the Airmodus A11 nano Condensation Nucleus Counter at various inlet pressures and various operation temperatures, and design of a new inlet system

Operation of the Airmodus A11 nano Condensation Nucleus Counter at various inlet pressures, various operation temperatures and design of a new inlet system

Opinion: Gigacity – a source of problems or the new way to sustainable development

scientific article published in 2021

Optimisation of the operation regimes for the water-based condensation particle counter

Organic aerosol components derived from 25 AMS data sets across Europe using a consistent ME-2 based source apportionment approach

scholarly article

Organic aerosol concentration and composition over Europe: insights from comparison of regional model predictions with aerosol mass spectrometer factor analysis

scholarly article

Organic condensation: a vital link connecting aerosol formation to cloud condensation nuclei (CCN) concentrations

scholarly article

Organic constituents on the surfaces of aerosol particles from Southern Finland, Amazonia, and California studied by vibrational sum frequency generation.

scientific article published on 23 July 2012

Overview of a prescribed burning experiment within a boreal forest in Finland

scientific article published on 22 August 2013

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

scientific article

Overview: Recent advances in the understanding of the northern Eurasian environments and of the urban air quality in China – a Pan-Eurasian Experiment (PEEX) programme perspective

Oxidation of SO<sub>2</sub> by stabilized Criegee intermediate (sCI) radicals as a crucial source for atmospheric sulfuric acid concentrations

scholarly article

Oxidation products of biogenic emissions contribute to nucleation of atmospheric particles

scientific article

Ozone and fine particle in the western Yangtze River Delta: an overview of 1 yr data at the SORPES station

scholarly article

PAN-EURASIAN EXPERIMENT (PEEX) PROGRAM: AN OVERVIEW OF THE FIRST 5 YEARS IN OPERATION AND FUTURE PROSPECTS

Pan-Eurasian Experiment (PEEX): towards a holistic understanding of the feedbacks and interactions in the land–atmosphere–ocean–society continuum in the northern Eurasian region

scholarly article

Particle Size Magnifier for Nano-CN Detection

scholarly article by J. Vanhanen et al published 10 March 2011 in Aerosol Science and Technology

Particle growth with photochemical age from new particle formation to haze in the winter of Beijing, China

scientific article published on 14 September 2020

Particle nucleation in a forested environment

Particulate matter pollution over China and the effects of control policies

scientific article published on 23 January 2017

Performance of diethylene glycol-based particle counters in the sub-3 nm size range

Photo-oxidation of aromatic hydrocarbons produces low-volatility organic compounds

scientific article published on 09 June 2020

Polluted dust promotes new particle formation and growth

scientific article

Positive feedback mechanism between biogenic volatile organic compounds and the methane lifetime in future climates

scientific article published in 2022

Prediction of photosynthesis in Scots pine ecosystems across Europe by a needle-level theory

scholarly article

Prediction of photosynthesis in Scots pine ecosystems across Europe by needle-level theory

scholarly article by Pertti Hari et al published 4 August 2017 in Atmospheric Chemistry and Physics Discussions

Prescribed burning of logging slash in the boreal forest of Finland: emissions and effects on meteorological quantities and soil properties

scholarly article

Probing aerosol formation by comprehensive measurements of gas phase oxidation products

article

Production of neutral molecular clusters by controlled neutralization of mobility standards.

scientific article

Quantification of the volatility of secondary organic compounds in ultrafine particles during nucleation events

scholarly article

Radiative absorption enhancements due to the mixing state of atmospheric black carbon

scientific article

Radical Formation by Fine Particulate Matter Associated with Highly Oxygenated Molecules

scientific article published on 07 October 2019

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

scientific article published on 13 May 2020

Rapid growth of organic aerosol nanoparticles over a wide tropospheric temperature range

article published in the Proceedings of the National Academy of Sciences of the United States of America

Reactivity of stabilized Criegee intermediates (sCIs) from isoprene and monoterpene ozonolysis toward SO<sub>2</sub> and organic acids

scholarly article

Real-Time Detection of Arsenic Cations from Ambient Air in Boreal Forest and Lake Environments

article

Recent advances in understanding secondary organic aerosol: Implications for global climate forcing

article

Reduced anthropogenic aerosol radiative forcing caused by biogenic new particle formation

scientific article

Relating the hygroscopic properties of submicron aerosol to both gas- and particle-phase chemical composition in a boreal forest environment

scholarly article

Relationship between aerosol oxidation level and hygroscopic properties of laboratory generated secondary organic aerosol (SOA) particles

article

Remarks on Ion Generation for CPC Detection Efficiency Studies in Sub-3-nm Size Range

Resolving anthropogenic aerosol pollution types – deconvolution and exploratory classification of pollution events

scholarly article

Response to comment on "Radiative absorption enhancements due to the mixing state of atmospheric black carbon".

scientific article published in January 2013

Roadside aerosol study using hygroscopic, organic and volatility TDMAs: Characterization and mixing state

article

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

scientific article

Roll vortices induce new particle formation bursts in the planetary boundary layer

scientific article published in 2020

SMEAR Estonia: Perspectives of a large-scale forest ecosystem – atmosphere research infrastructure

scholarly article by Steffen Noe et al published 1 December 2015 in Metsanduslikud Uurimused

Seasonal cycle and modal structure of particle number size distribution at Dome C, Antarctica

scholarly article

Seasonal cycles of fluorescent biological aerosol particles in boreal and semi-arid forests of Finland and Colorado

scholarly article

Seasonal variation of CCN concentrations and aerosol activation properties in boreal forest

scholarly article

Semi-volatile and highly oxygenated gaseous and particulate organic compounds observed above a boreal forest canopy

Semi-volatile and highly oxygenated gaseous and particulate organic compounds observed above a boreal forest canopy

scholarly article

Sesquiterpenes identified as key species for atmospheric chemistry in boreal forest by terpenoid and OVOC measurements

Significance of the organic aerosol driven climate feedback in the boreal area

scientific article published in 2021

Simple proxies for estimating the concentrations of monoterpenes and their oxidation products at a boreal forest site

scholarly article

Size distributions, sources and source areas of water-soluble organic carbon in urban background air

scholarly article

Size-dependent influence of NOx on the growth rates of organic aerosol particles

scientific article published on 27 May 2020

Sizing of neutral sub 3nm tungsten oxide clusters using Airmodus Particle Size Magnifier

scholarly article by J. Kangasluoma et al published September 2015 in Journal of Aerosol Science

Soil Nitrites Influence Atmospheric Chemistry

scientific article

Solar eclipse demonstrating the importance of photochemistry in new particle formation

scientific article published on 4 April 2017

Source characterization of highly oxidized multifunctional compounds in a boreal forest environment using positive matrix factorization

scholarly article

Sources and formation of nucleation mode particles in remote tropical marine atmospheres over the South China Sea and the Northwest Pacific Ocean

scientific article published on 11 May 2020

Spatial and vertical extent of nucleation events in the Midwestern USA: insights from the Nucleation In ForesTs (NIFTy) experiment

scholarly article

Spatial and vertical extent of nucleation events in the Midwestern USA: insights from the Nucleation In ForesTs (NIFTy) experiment

Spatial–temporal variations of particle number concentrations between a busy street and the urban background

Species traits and inertial deposition of fungal spores

article

Sub-3 nm Particle Detection with Commercial TSI 3772 and Airmodus A20 Fine Condensation Particle Counters

journal article; published in Aerosol Science and Technology in 2015

Sub-3 nm particle size and composition dependent response of a nano-CPC battery

article

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

scholarly article

Sulfuric acid and OH concentrations in a boreal forest site

scientific article published in 2009

Sulphur dioxide and sulphuric acid concentrations in the vicinity of Kilpilahti industrial area

Sulphuric acid and aerosol particle production in the vicinity of an oil refinery

scholarly article by Nina Sarnela et al published October 2015 in Atmospheric Environment

Supplementary material to "Aerosol optical properties calculated from size distributions, filter samples and absorption photometer data at Dome C, Antarctica and their relationships between seasonal cycles of sources"

scholarly article

Supplementary material to "Estimating CCN number concentrations using aerosol optical properties: Role of particle number size distribution and parameterization"

scientific article

Supplementary material to "New particle formation at urban and high-altitude remote sites in the south-eastern Iberian Peninsula"

scientific article

Supplementary material to "Novel estimation of aerosol processes with particle size distribution measurements: a case study with TOMAS algorithm"

Supplementary material to "Prediction of photosynthesis in Scots pine ecosystems across Europe by needle-level theory"

scientific article published on 4 August 2017

Synergistic HNO-HSO-NH upper tropospheric particle formation

scientific article published in May 2022

Technical Note: Using DEG-CPCs at upper tropospheric temperatures

scholarly article

Technical note: New particle formation event forecasts during PEGASOS–Zeppelin Northern mission 2013 in Hyytiälä, Finland

scholarly article

Terpene emissions from boreal wetlands can initiate stronger atmospheric new particle formation than boreal forests

scientific article published in 2022

Terpenoid emissions from fully grown east Siberian <i>Larix cajanderi</i> trees

scientific article published in 2013

The Green Ocean Amazon Experiment (GoAmazon2014/5) Observes Pollution Affecting Gases, Aerosols, Clouds, and Rainfall over the Rain Forest

scholarly article by S. T. Martin et al published May 2017 in Bulletin of the American Meteorological Society

The Role of Sulfuric Acid in Atmospheric Nucleation

scientific article

The analysis of size-segregated cloud condensation nuclei counter (CCNC) data and its implications for cloud droplet activation

scholarly article

The condensation particle counter battery (CPCB): A new tool to investigate the activation properties of nanoparticles

The contribution of organics to atmospheric nanoparticle growth

article

The contribution of sulfuric acid and non-volatile compounds on the growth of freshly formed atmospheric aerosols

scholarly article

The effect of H 2 SO 4 – amine clustering on chemical ionization mass spectrometry (CIMS) measurements of gas-phase sulfuric acid

scholarly article

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

scientific article published on 20 May 2016

The effect of clouds and precipitation on the aerosol concentrations and composition in a boreal forest environment

scientific article published in 2022

The formation of highly oxidized multifunctional products in the ozonolysis of cyclohexene.

scientific article

The high charge fraction of flame-generated particles in the size range below 3 nm measured by enhanced particle detectors

article by Yang Wang et al published February 2017 in Combustion and Flame

The initial stages of multicomponent particle formation during the gas phase combustion synthesis of mixed SiO2/TiO2

The particle size magnifier closing the gap between measurement of molecules, molecular clusters and aerosol particles

The role of H2SO4-NH3 anion clusters in ion-induced aerosol nucleation mechanisms in the boreal forest

scholarly article

The role of H2SO4-NH3 anion clusters in ion-induced aerosol nucleation mechanisms in the boreal forest

preprint

The role of highly oxygenated molecules (HOMs) in determining the composition of ambient ions in the boreal forest

scholarly article

The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system

scientific article published on 25 September 2019

The role of ions in new particle formation in the CLOUD chamber

scholarly article

The role of ions in new-particle formation in the CLOUD chamber

The role of low-volatility organic compounds in initial particle growth in the atmosphere.

scientific article published on 25 May 2016

The role of relative humidity in continental new particle formation

scientific article

The science-policy interfaces of the European network for observing our changing planet: From Earth Observation data to policy-oriented decisions

scientific article published in 2022

The seasonal cycle of ice-nucleating particles linked to the abundance of biogenic aerosol in boreal forests

scientific article published in 2021

The summertime Boreal forest field measurement intensive (HUMPPA-COPEC-2010): an overview of meteorological and chemical influences

scholarly article

The versatile size analyzing nuclei counter (vSANC)

Thermodynamics of the formation of sulfuric acid dimers in the binary (H2SO4–H2O) and ternary (H2SO4–H2O–NH3) system

scholarly article

Toward direct measurement of atmospheric nucleation

scientific article

Transportable Aerosol Characterization Trailer with Trace Gas Chemistry: Design, Instruments and Verification

Trends in new particle formation in eastern Lapland, Finland: effect of decreasing sulfur emissions from Kola Peninsula

scholarly article

Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018

scientific article published in 2021

Tropical and Boreal Forest – Atmosphere Interactions: A Review

scientific article published on 29 March 2022

Ultrafine particles and PM2.5 in the air of cities around the world: Are they representative of each other?

scientific article published on 21 May 2019

Unexpectedly acidic nanoparticles formed in dimethylamine-ammonia-sulfuric acid nucleation experiments at CLOUD

Unexpectedly acidic nanoparticles formed in dimethylamine–ammonia–sulfuric-acid nucleation experiments at CLOUD

scholarly article

Using Charging State in Estimating the Relative Importance of Neutral and Ion-induced Nucleation

scientific article published in 2007

Using in situ GC-MS for analysis of C₂–C₇ volatile organic acids in ambient air of a boreal forest site

article

Variability of air ion concentrations in urban Paris

scholarly article

Vertical and horizontal variation of aerosol number size distribution in the boreal environment

Vertical characterization of highly oxygenated molecules (HOMs) below and above a boreal forest canopy

scholarly article

Volatility of mixed atmospheric humic-like substances and ammonium sulfate particles

scholarly article

Warming-induced increase in aerosol number concentration likely to moderate climate change

article

What do we learn from long-term cloud condensation nuclei number concentration, particle number size distribution, and chemical composition measurements at regionally representative observatories?

article

Wintertime subarctic new particle formation from Kola Peninsula sulfur emissions

scientific article published on 2 December 2021

Zeppelin-led study on the onset of new particle formation in the planetary boundary layer

scientific article published in 2021