AGW Observer

Observations of anthropogenic global warming

Atmospheric composition

Papers from New research stream


A global catalogue of large SO2 sources and emissions derived from the Ozone Monitoring Instrument (Fioletov et al. 2016)

Re-evaluating the 1940s CO2 plateau (Bastos et al. 2016)

Trace gases in the atmosphere over Russian cities (Elansky et al. 2016)

Potential sea salt aerosol sources from frost flowers in the pan-Arctic region (Xu et al. 2016)

Early detection of volcanic hazard by lidar measurement of carbon dioxide (Fiorani et al. 2016)

Validation and update of OMI Total Column Water Vapor product (Wang et al. 2016)

Long-term visibility variation in Athens (1931–2013): a proxy for local and regional atmospheric aerosol loads (Founda et al. 2016)

Particulate air pollution from wildfires in the Western US under climate change (Liu et al. 2016)

Climate-driven ground-level ozone extreme in the fall over the Southeast United States (Zhang et al. 2016)

Radon as a tracer of atmospheric influences on traffic-related air pollution in a small inland city (Williams et al. 2016)

Bioaerosols in the Earth system: Climate, health, and ecosystem interactions (Fröhlich-Nowoisky et al. 2016)

The importance of non-fossil sources in carbonaceous aerosols in a megacity of central China during the 2013 winter haze episode: A source apportionment constrained by radiocarbon and organic tracers (Liu et al. 2016)

Estimating Minimum Detection Times for Satellite Remote Sensing of Trends in Mean and Extreme Precipitable Water Vapor (Roman et al. 2016)

A comprehensive estimate for loss of atmospheric carbon tetrachloride (CCl4) to the ocean (Butler et al. 2016)

Significant increase of summertime ozone at Mount Tai in Central Eastern China (Sun et al. 2016)

Snow Covered Soils Produce N2O that is Lost from Forested Catchments (Enanga et al. 2016)

Spatial and temporal variability of urban fluxes of methane, carbon monoxide and carbon dioxide above London, UK (Helfter et al. 2016)

Climatic variability of the column ozone over the Iranian plateau (Mousavi et al. 2016)

Long-term variation of stratospheric aerosols observed with lidars over Tsukuba, Japan from 1982 and Lauder, New Zealand from 1992 to 2015 (Sakai et al. 2016)

The natural oscillations in stratospheric ozone observed by the GROMOS microwave radiometer at the NDACC station Bern (Moreira et al. 2016)

A biogenic CO2 flux adjustment scheme for the mitigation of large-scale biases in global atmospheric CO2 analyses and forecasts (Agustí-Panareda et al. 2016)

Relationship of ground-level ozone with synoptic weather conditions in Chicago (Jing et al. 2016)

Global detection of absorbing aerosols over the ocean in the red and near infrared spectral region (Waquet et al. 2016)

Atmospheric benzene observations from oil and gas production in the Denver Julesburg basin in July and August 2014 (Halliday et al. 2016)

Carbon monoxide climatology derived from the trajectory mapping of global MOZAIC-IAGOS data (Osman et al. 2016)

The millennium water vapour drop in chemistry–climate model simulations (Brinkop et al. 2016)

Evaluation of 4 years of continuous δ13C(CO2) data using a moving Keeling plot method (Vardag, Hammer & Levin, 2016)

Intercomparison of in situ NDIR and column FTIR measurements of CO2 at Jungfraujoch (Schibig et al. 2016)

Evaluation of 4 years of continuous δ13C(CO2) data using a moving Keeling plot method (Vardag, Hammer & Levin, 2016)

Intra-seasonal variability of atmospheric CO2 concentrations over India during summer monsoons (Kumar et al. 2016)

Impact of ENSO on variability of AIRS retrieved CO2 over India (Kumar et al. 2016)

Role of OH variability in the stalling of the global atmospheric CH4 growth rate from 1999 to 2006 (McNorton et al. 2016)

Large XCH4 anomaly in summer 2013 over northeast Asia observed by GOSAT (Ishizawa et al. 2016)

Can we detect regional methane anomalies? A comparison between three observing systems (Cressot et al. 2016)

Non-homogeneous vertical distribution of methane over Indian region using surface, aircraft and satellite based data (Kavitha & Nair, 2016)

Diverse policy implications for future ozone and surface UV in a changing climate (Butler et al. 2016)

A probabilistic study of the return of stratospheric ozone to 1960 levels (Södergren et al. 2016)

The representation of solar cycle signals in stratospheric ozone – Part 1: A comparison of recently updated satellite observations (Maycock et al. 2016)

Summer ozone concentrations in the vicinity of the Great Salt Lake (Horel et al. 2016)

Impact of emissions and +2 °C climate change upon future ozone and nitrogen dioxide over Europe (Watson et al. 2016)

Changes in surface aerosol extinction trends over China during 1980–2013 inferred from quality-controlled visibility data (Li et al. 2016)

Natural and Anthropogenic Aerosol Trends from Satellite and Surface Observations and Model Simulations over the North Atlantic Ocean from 2002 to 2012 (Jongeward et al. 2016)

Aerosol Lidar Observations of Atmospheric Mixing in Los Angeles: Climatology and Implications for Greenhouse Gas Observations (Ware et al. 2016)

Future aerosol emissions: a multi-model comparison (Smith et al. 2016)

Multi-Year Study of the Dependence of Sea Salt Aerosol on Wind Speed and Sea Ice Conditions in the Coastal Arctic (May et al. 2016)

Effects of climate changes on dust aerosol over East Asia from RegCM3 (Zhang et al. 2016)

Older papers:


Comparison of atmospheric concentrations of sulphur and nitrogen compounds, chloride and base cations at Ähtäri and Hyytiälä, Finland (Ruoho-Airola 2012)
Summer concentrations of NMHCs in ambient air of the Arctic and Antarctic (Hellén et al. 2012)


Geographical origin of aerosol particles observed during the LAPBIAT measurement campaign in spring 2003 in Finnish Lapland (Kaasik et al. 2011)
Below-cloud scavenging of aerosol particles by snow at an urban site in Finland (Paramonov et al. 2011)
land ecosystem–atmosphere processes study (iLEAPS) assessment of global observational networks (Guenther et al. 2011)
On measurements of aerosol particles and greenhouse gases in Siberia and future research needs (Kulmala et al. 2011)



Atmospheric CO2 variation over the Baltic Sea and the impact on air–sea exchange (Rutgersson et al. 2009)
The urban measurement station SMEAR III: Continuous monitoring of air pollution and surface–atmosphere interactions in Helsinki, Finland (Järvi et al. 2009)
Methane and nitrous oxide fluxes in two coastal wetlands in the northeastern Gulf of Bothnia, Baltic Sea (Liikanen et al. 2009)
A comprehensive network of measuring stations to monitor climate change (Hari et al. 2009)
Smart-SMEAR: on-line data exploration and visualization tool for SMEAR stations (Junninen et al. 2009)
Measurements of humidified particle number size distributions in a Finnish boreal forest: derivation of hygroscopic particle growth factors (Birmili et al. 2009)
A comparison of new particle formation events in the boundary layer at three different sites in Europe (Jaatinen et al. 2009)
Comparison of net CO2 fluxes measured with open- and closed-path infrared gas analyzers in an urban complex environment (Järvi et al. 2009)
Physical and chemical characteristics of aerosol particles and cloud-droplet activation during the Second Pallas Cloud Experiment (Second PaCE) (Kivekäs et al. 2009)
Snow scavenging of ultrafine particles: field measurements and parameterization (Kyrö et al. 2009)
Aerosol time-of-flight mass spectrometer for measuring ultrafine aerosol particles (Laitinen et al. 2009)
Ozone concentration variations observed in northern Finland in relation to photochemical, transport and cloud processes (Laurila et al. 2009)
Ion-UHMA: a model for simulating the dynamics of neutral and charged aerosol particles (Leppä et al. 2009)
Overview of the research activities and results at Puijo semi-urban measurement station (Leskinen et al. 2009)
Long-term field measurements of charged and neutral clusters using Neutral cluster and Air Ion Spectrometer (NAIS) (Manninen et al. 2009)
eucalyptol the cause of nocturnal events observed in Australia? (Ortega et al. 2009)
Connection between new particle formation and sulphuric acid at Hohenpeissenberg (Germany) including the influence of organic compounds (Paasonen et al. 2009)
Analysis of organic compounds in ambient aerosols collected with the particle-into-liquid sampler (Parshintsev et al. 2009)
Observations of aerosol–cloud interactions at the Puijo semi-urban measurement station (Portin et al. 2009)
The evolution of nucleation- and Aitken-mode particle compositions in a boreal forest environment during clean and pollution-affected new-particle formation events (Vaattovaara et al. 2009)
Characteristics of new particle formation events and cluster ions at K-puszta, Hungary (Yli-Juuti et al. 2009)
Spring recovery of photosynthesis and atmospheric particle formation (Dal Maso et al. 2009)
Annual variations of atmospheric VOC concentrations in a boreal forest (Hakola et al. 2009)
Pressure responses of portable CO2 concentration sensors (Kulmala et al. 2009)
Biogenic volatile organic compound emissions from the Eurasian taiga: current knowledge and future directions (Rinne et al. 2009)
Synoptic circulation and its influence on spring and summer surface ozone concentrations in southern Sweden (Tang et al. 2009)
Emissions of volatile halogenated compounds from a meadow in a coastal area of the Baltic Sea (Valtanen et al. 2009)


Aerosol particle formation events at two Siberian stations inside the boreal forest (Dal Maso et al. 2008)
Aerosol components and types in the Baltic Sea region (Reinart et al. 2008)


A wide-range multi-channel Air Ion Spectrometer (Mirme et al. 2007)
The 222Rn activity concentration, external radiation dose and air ion production rates in a boreal forest in Finland between March 2000 and June 2006 (Hirsikko et al. 2007)
Hot-air balloon as a platform for boundary layer profile measurements during particle formation (Laakso et al. 2007)
Road-side measurements of aerosol and ion number size distributions: a comparison with remote site measurements (Tiitta et al. 2007)
Size distributions of atmospheric ions in the Baltic Sea region (Komppula et al. 2007)
Size distributions of atmospheric ions inside clouds and in cloud-free air at a remote continental site (Lihavainen et al. 2007)
Nucleation events detected at the high altitude site of the Puy de Dôme Research Station, France (Venzac et al. 2007)
Modal structure of the atmospheric aerosol particle size spectrum for nucleation burst days in Estonia (Pugatsova et al. 2007)
Ion and particle number concentrations and size distributions along the Trans-Siberian railroad (Vartiainen et al. 2007)
Charged particle size distributions and analysis of particle formation events at the Finnish Antarctic research station Aboa (Virkkula et al. 2007)
Simulating aerosol nucleation bursts in a coniferous forest (Tammet & Kulmala 2007)
Quantum chemical studies of hydrate formation of H2SO4 and HSO4– (Kurtén et al. 2007)


Monitoring of black carbon and size-segregated particle number concentrations at 9-m and 65-m distances from a major road in Helsinki (Pakkanen et al. 2006)


Meteorological and climatological factors affecting transport and deposition of nitrogen compounds over the Baltic Sea (Hongisto & Joffre 2005)
On the existence of neutral atmospheric clusters (Kulmala et al. 2005)
Station for Measuring Ecosystem–Atmosphere Relations (SMEAR II) (Hari & Kulmala 2005)
Formation and growth of fresh atmospheric aerosols: eight years of aerosol size distribution data from SMEAR II, Hyytiälä, Finland (Dal Maso et al. 2005)
Evaluation of an automatic algorithm for fitting the particle number size distributions (Hussein et al. 2005)
Annual and size dependent variation of growth rates and ion concentrations in boreal forest (Hirsikko et al. 2005)
Organic compounds in atmospheric aerosols from a Finnish coniferous forest (Anttila et al. 2005)
Physico-chemical characterization and mass closure of size-segregated atmospheric aerosols in Hyytiälä, Finland (Saarikoski et al. 2005)
Wintertime CO2 evolution from a boreal forest ecosystem (Ilvesniemi et al. 2005)
On-line PTR-MS measurements of atmospheric concentrations of volatile organic compounds in a European boreal forest ecosystem (Rinne et al. 2005)
Research Unit of Physics, Chemistry and Biology of Atmospheric Composition and Climate Change: overview of recent results (Kulmala et al. 2005)
Probability of nucleation events and aerosol particle concentration in different air mass types arriving at Hyytiälä, southern Finland, based on back trajectories analysis (Sogacheva et al. 2005)
Seasonal variations of trace gases, meteorological parameters, and formation of aerosols in boreal forests (Lyubovtseva et al. 2005)
Effect of ammonium bisulphate formation on atmospheric water-sulphuric acid-ammonia nucleation (Anttila et al. 2005)
A combined photochemistry/aerosol dynamics model: model development and a study of new particle formation (Grini et al. 2005)
Design and performance characteristics of a condensation particle counter UF-02proto (Mordas et al. 2005)


Aerosols in boreal forest: wintertime relations between formation events and bio-geo-chemical activity (Kulmala et al. 2004)
Meteorological evaluation of a severe air pollution episode in Helsinki on 27–29 December 1995 (Pohjola et al. 2004)
Trends and scenarios of ground-level ozone concentrations in Finland (Laurila et al. 2004)
Sulphur and nitrogen oxides emissions in Europe and deposition in Finland during the 21st century (Syri et al. 2004)
Composition and origins of aerosol during a high PM10 episode in Finland (Tervahattu et al. 2004)
The effect of climate and landuse on TOC concentrations and loads in Finnish rivers (Arvola et al. 2004)
Potential springtime greenhouse gas emissions from a small southern boreal lake (Keihäsjärvi, Finland) (Huttunen et al. 2004)


Primary particulate matter emissions and the Finnish climate strategy (Karvosenoja & Johansson 2003)
Mace Head Atmospheric Research Station — characterization of aerosol radiative parameters (Jennings et al. 2003)
Field measurements of atmosphere–biosphere interactions in a Danish beech forest (Pilegaard et al. 2003)
Atmospheric trace gas and aerosol particle concentration measurements in Eastern Lapland, Finland 1992–2001 (Ruuskanen et al. 2003)
A decade of trace gas measurements using DOAS in Finnish Lapland (Virkkula et al. 2003)
Overview of the atmospheric research activities and results at Pallas GAW station (Hatakka et al. 2003)
Influence of air mass source sector on variations in CO2 mixing ratio at a boreal site in northern Finland (Aalto et al. 2003)
Comparison of new particle formation events at two locations in northern Finland (Komppula et al. 2003)
On the concept of condensation sink diameter (Lehtinen et al. 2003)
Ozone flux measurements over a Scots pine forest using eddy covariance method: performance evaluation and comparison with flux-profile method (Keronen et al. 2003)
Measuring shoot-level NOx flux in field conditions: the role of blank chambers (Raivonen et al. 2003)


Retrieval of the spatial distribution of liquid water path from combined ground-based and satellite observations for atmospheric model evaluation (Feijt et al. 2002)


Eddy covariance fluxes over a boreal Scots pine forest (Markkanen et al. 2001)


Biogenic aerosol formation in the boreal forest (Kulmala et al. 2000)
Characteristics of the atmospheric particle formation events observed at a borel forest site in southern Finland (Mäkelä et al. 2000)
Characterization of atmospheric trace gas and aerosol concentrations at forest sites in southern and northern Finland using back trajectories (Kulmala et al. 2000)
Aerosol physico-chemical characteristics over a boreal forest determined by volatility analysis (O’Dowd et al. 2000)
Using a cloud condensation nuclei counter to study CCN properties and concentrations (Aalto & Kulmala 2000)
Aerosol dynamical model MULTIMONO (Pirjola & Kulmala 2000)
Annual variability of nitrogen concentrations and export from forested catchments: A consequence of climatic variability, sampling strategies or human interference? (Andersson & Lepistö 2000)




The influence of Kola Peninsula, continental European and marine sources on the number concentrations and scattering coefficients of the atmospheric aerosol in Finnish Lapland (Virkkula et al. 1997)








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