Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field StationAtmospheric Chemistry And Physics. 2022-11-02. DOI : 10.5194/acp-22-14037-2022.
Exploring the link between austral stratospheric polar vortex anomalies and surface climate in chemistry-climate modelsAtmospheric Chemistry And Physics. 2022-11-01. DOI : 10.5194/acp-22-13915-2022.
Clean air policies are key for successfully mitigating Arctic warmingCommunications Earth & Environment. 2022-10-02. DOI : 10.1038/s43247-022-00555-x.
Using Novel Molecular-Level Chemical Composition Observations of High Arctic Organic Aerosol for Predictions of Cloud Condensation NucleiEnvironmental Science & Technology. 2022-09-16. DOI : 10.1021/acs.est.2c02162.
Substantial contribution of iodine to Arctic ozone destructionNature Geoscience. 2022-09-15. DOI : 10.1038/s41561-022-01018-w.
A central arctic extreme aerosol event triggered by a warm air-mass intrusionNature Communications. 2022-09-08. DOI : 10.1038/s41467-022-32872-2.
Aerobiology over the Southern Ocean – implications for bacterial colonization of AntarcticaEnvironment International. 2022-08-30. DOI : 10.1016/j.envint.2022.107492.
Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphereNature Communications. 2022-08-24. DOI : 10.1038/s41467-022-32440-8.
Increased aerosol concentrations in the High Arctic attributable to changing atmospheric transport patternsnpj Climate and Atmospheric Science. 2022-08-01. DOI : 10.1038/s41612-022-00286-y.
Circum-Antarctic abundance and properties of CCN and INPsAtmospheric Chemistry and Physics. 2022-07-29. DOI : 10.5194/acp-22-9721-2022.
Observing the Central Arctic Atmosphere and Surface with University of Colorado uncrewed aircraft systemsScientific Data. 2022-07-23. DOI : 10.1038/s41597-022-01526-9.
Automated identification of local contamination in remote atmospheric composition time seriesAtmospheric Measurement Techniques. 2022-07-20. DOI : 10.5194/amt-15-4195-2022.
Diurnal evolution of negative atmospheric ions above the boreal forest: from ground level to the free troposphereAtmospheric Chemistry And Physics. 2022-07-05. DOI : 10.5194/acp-22-8547-2022.
Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic PeninsulaAtmospheric Chemistry And Physics. 2022-07-01. DOI : 10.5194/acp-22-8417-2022.
High-frequency gaseous and particulate chemical characterization using extractive electrospray ionization mass spectrometry (Dual-Phase-EESI-TOF)Atmospheric Measurement Techniques. 2022-06-23. DOI : 10.5194/amt-15-3747-2022.
Annual cycle observations of aerosols capable of ice formation in central Arctic cloudsNature Communications. 2022-06-20. DOI : 10.1038/s41467-022-31182-x.
A local marine source of atmospheric particles in the High ArcticAtmospheric Environment. 2022-06-18. DOI : 10.1016/j.atmosenv.2022.119241.
Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 ExpeditionJournal of Geophysical Research: Atmospheres. 2022-06-02. DOI : 10.1029/2021JD036383.
An evaluation of new particle formation events in Helsinki during a Baltic Sea cyanobacterial summer bloomAtmospheric Chemistry And Physics. 2022-05-17. DOI : 10.5194/acp-22-6365-2022.
What are the likely changes in mercury concentration in the Arctic atmosphere and ocean under future emissions scenarios?Science of The Total Environment. 2022-05-10. DOI : 10.1016/j.scitotenv.2022.155477.
Model evaluation of short-lived climate forcers for the Arctic Monitoring and Assessment Programme: a multi-species, multi-model studyAtmospheric Chemistry and Physics. 2022-05-04. DOI : 10.5194/acp-22-5775-2022.
Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatoriesAtmospheric Chemistry and Physics. 2022-03-08. DOI : 10.5194/acp-22-3067-2022.
Highly Active Ice‐Nucleating Particles at the Summer North PoleJournal of Geophysical Research: Atmospheres. 2022-03-01. DOI : 10.1029/2021JD036059.
Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surfaceEnvironmental Research Letters. 2022-03-01. DOI : 10.1088/1748-9326/ac444b.
Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosolsNature Geoscience. 2022-02-28. DOI : 10.1038/s41561-021-00891-1.
Overview of the MOSAiC expedition—AtmosphereElementa: Science of the Anthropocene. 2022-02-07. DOI : 10.1525/elementa.2021.00060.
New particle formation event detection with Mask R-CNNAtmospheric Chemistry and Physics. 2022-01-25. DOI : 10.5194/acp-22-1293-2022.
Observed coupling between air mass history, secondary growth of nucleation mode particles and aerosol pollution levels in BeijingEnvironmental Science: Atmospheres. 2022-01-19. DOI : 10.1039/D1EA00089F.
Year-round trace gas measurements in the central Arctic during the MOSAiC expeditionScientific Data. 2022. DOI : 10.1038/s41597-022-01769-6.
Arctic atmospheric mercury: Sources and changesScience of The Total Environment. 2022. DOI : 10.1016/j.scitotenv.2022.156213.
Key challenges for tropospheric chemistry in the Southern HemisphereElementa: Science of the Anthropocene. 2022. DOI : 10.1525/elementa.2021.00050.
The standard operating procedure for Airmodus Particle Size Magnifier and nano-Condensation Nucleus CounterJournal of Aerosol Science. 2022. DOI : 10.1016/j.jaerosci.2021.105896.
Evidence that Pacific tuna mercury levels are driven by marine methylmercury production and anthropogenic inputsProceedings of the National Academy of Sciences. 2022. DOI : 10.1073/pnas.2113032119.
Arctic mercury cyclingNature reviews earth & environment. 2022-03-22. DOI : 10.1038/s43017-022-00269-w.
Aerosol processes in high-latitude environments and the effects on climateAerosols and Climate; Elsevier, 2022-08-18. p. 854.
Scientists map Arctic aerosols to better understand regional warming2022-03-01.
Dans la chair de thon listao, la trace de la pollution humaine2022-01-11.
Measurement report: New particle formation characteristics at an urban and a mountain station in northern ChinaAtmospheric Chemistry And Physics. 2021-12-07. DOI : 10.5194/acp-21-17885-2021.
Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation ExpeditionEarth System Dynamics. 2021-11-30. DOI : 10.5194/esd-12-1295-2021.
Low‐Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation ExpeditionJournal of Geophysical Research: Atmospheres. 2021-11-11. DOI : 10.1029/2021JD035126.
New Insights Into the Composition and Origins of Ultrafine Aerosol in the Summertime High ArcticGeophysical Research Letters. 2021-11-06. DOI : 10.1029/2021GL094395.
Constraining the response factors of an extractive electrospray ionization mass spectrometer for near-molecular aerosol speciationAtmospheric Measurement Techniques. 2021-11-04. DOI : 10.5194/amt-14-6955-2021.
Atmospheric mercury sources in a coastal-urban environment: a case study in Boston, Massachusetts, USAEnvironmental Science: Processes & Impacts. 2021-10-26. DOI : 10.1039/D1EM00253H.
Temporary pause in the growth of atmospheric ethane and propane in 2015–2018Atmospheric Chemistry and Physics. 2021-10-12. DOI : 10.5194/acp-21-15153-2021.
Molecular characterization of ultrafine particles using extractive electrospray time-of-flight mass spectrometryEnvironmental Science: Atmospheres. 2021-08-23. DOI : 10.1039/D1EA00050K.
Differentiation of coarse-mode anthropogenic, marine and dust particles in the High Arctic islands of SvalbardAtmospheric Chemistry and Physics. 2021-07-28. DOI : 10.5194/acp-21-11317-2021.
Progress in Unraveling Atmospheric New Particle Formation and Growth Across the ArcticGeophysical Research Letters. 2021-07-03. DOI : 10.1029/2021GL094198.
Black carbon and dust in the Third Pole glaciers: revaluated concentrations, mass absorption cross-sections and contributions to glacier ablationScience of The Total Environment. 2021-05-21. DOI : 10.1016/j.scitotenv.2021.147746.
Sources, Occurrence and Characteristics of Fluorescent Biological Aerosol Particles Measured over the Pristine Southern OceanJournal of Geophysical Research: Atmospheres. 2021-05-18. DOI : 10.1029/2021JD034811.
Large contribution to secondary organic aerosol from isoprene cloud chemistryScience Advances. 2021-03-24. DOI : 10.1126/sciadv.abe2952.
Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMSEnvironmental Science: Atmospheres. 2021-03-15. DOI : 10.1039/D0EA00023J.
Aerosols in current and future Arctic climateNature Climate Change. 2021-02-08. DOI : 10.1038/s41558-020-00969-5.
Towards understanding the characteristics of new particle formation in the Eastern MediterraneanAtmospheric Chemistry and Physics. 2021. DOI : 10.5194/acp-21-9223-2021.
Aerosol formation and growth rates from chamber experiments using Kalman smoothingAtmospheric Chemistry and Physics. 2021. DOI : 10.5194/acp-21-12595-2021.
Towards a concentration closure of sub-6 nm aerosol particles and sub-3 nm atmospheric clustersJournal of Aerosol Science. 2021. DOI : 10.1016/j.jaerosci.2021.105878.
Impact Of Warm Air Mass Intrusions On Atmospheric Chemistry And MicrophysicsAmerican Geoscience Union 2021 (AGU Fall Meeting 2021), New Orleans, LA & Online Everywhere, USA, December 13-17, 2021.
Automated identification of local contamination in an Arctic aerosol time seriesEuropean Aerosol Conference (EAC 2021), [virtual event], August 30 - September ,3 2021.
Pan-Arctic seasonal cycles and long-term trends of aerosol properties from ten observatoriesAmerican Geoscience Union 2021 (AGU Fall Meeting 2021), New Orleans, LA & Online Everywhere, USA, December 13-17, 2021.
Chemical and Microphysical State of the Central Arctic AtmosphereAmerican Geoscience Union 2021 (AGU Fall Meeting 2021), New Orleans, LA & Online Everywhere, USA, December 13-17, 2021.
Measurements of Atmospheric Variability during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) ExpeditionAnnual Meeting of the European Meteorological Society (EMS 2021), [online], September 6-10, 2021.
MoMuCAMS – A newly developed Helikite-based modular platform for aerosol and trace gas vertical measurementsEuropean Aerosol Conference (EAC 2021), [virtual event], 30 August - 3 September 2021.
Impact of warm air mass intrusions on atmospheric chemistry and microphysicsEuropean Aerosol Conference (EAC 2021), Aachen, Germany, 30 August - 3 September 2021.
Arctic Aerosol Processes : Insights long-term measurements and recent campaignsEuropean Aerosol Conference (EAC 2021), [virtual event], August 30 - September 3, 2021.
Artic Integrated Urban Systems Twin cities – GURME initiative” sessionPACES 4th Open Science Meeting, [online], 26- 28 May 2021.
Impact of warm air mass intrusions on atmospheric chemistry and microphysics: Observations during MOSAiCEGU General Assembly 2021 (EGU 2021), online, April 19-30, 2021.
Impact of warm air mass intrusions on atmospheric chemistry and microphysicsArctic Science Summit Week (ASSW 2021), Online, Portugal, March 23-26, 2021.
Ship-based measurements of ice nuclei concentrations over the Arctic, Atlantic, Pacific and Southern oceansAtmospheric Chemistry and Physics. 2020-12-08. DOI : 10.5194/acp-20-15191-2020.
Prepare Scientists to Engage in Science‐PolicyEarth's Future. 2020-11-12. DOI : 10.1029/2020EF001628.
Frequent new particle formation over the high Arctic pack ice by enhanced iodine emissionsNature Communications. 2020-10-01. DOI : 10.1038/s41467-020-18551-0.
The value of remote marine aerosol measurements for constraining radiative forcing uncertaintyAtmospheric Chemistry and Physics. 2020-08-28. DOI : 10.5194/acp-20-10063-2020.
Black Carbon Aerosols in the Lower Free Troposphere are Heavily Coated in Summer but Largely Uncoated in Winter at Jungfraujoch in the Swiss AlpsGeophysical Research Letters. 2020-07-28. DOI : 10.1029/2020GL088011.
Satellite retrieval of cloud condensation nuclei concentrations in marine stratocumulus by using clouds as CCN chambersJournal of Geophysical Research: Atmospheres. 2020-07-26. DOI : 10.1029/2020JD032409.
Overview: Integrative and Comprehensive Understanding on Polar Environments (iCUPE) – concept and initial resultsAtmospheric Chemistry and Physics. 2020-07-22. DOI : 10.5194/acp-20-8551-2020.
Using global reanalysis data to quantify and correct airflow distortion bias in shipborne wind speed measurementsAtmospheric Measurement Techniques. 2020-06-30. DOI : 10.5194/amt-13-3487-2020.
Meridional and vertical variations of the water vapour isotopic composition in the marine boundary layer over the Atlantic and Southern OceanAtmospheric Chemistry And Physics. 2020-05-15. DOI : 10.5194/acp-20-5811-2020.
Online Aerosol Chemical Characterization by Extractive Electrospray Ionization-Ultrahigh-Resolution Mass Spectrometry (EESI-Orbitrap)Environmental Science & Technology. 2020-04-07. DOI : 10.1021/acs.est.9b07090.
Wintertime Aerosol observations during MOSAiCAGU American Geophysical Union Fall Meeting 2020, Online conference, December 1-17, 2020.
INP over the Southern Ocean: abundance and origin during ACEECA 2020 European Aerosol Conference, Aachen, Germany (online conference), August 2020.
Air ions and new particle formation during polar night in the Arctic OceanEAC 2020 European Aerosol Conference, Aachen, Germany (online), August 2020.
Iodine Drives New Particle Formation in the Central Arctic OceanAGU American Geophysical Union Fall Meeting 2020, Online conference, December 1-17, 2020.
Observations of aerosol precursor molecules during the Polar Night in the Arctic OceanEAC 2020 European Aerosol Conference, Aachen, Germany (online conference), August 2020.
CCN over the Southern Ocean: Sources and Relevance for Cloud FormationAGU Fall Meeting 2020, San Francisco, USA (online conference), December 1-17, 2020.
Observations of Arctic Atmospheric Boundary Layer with Small Unmanned Aerial Vehicles for MOSAiCAmerican Geophysical Union, San Francisco, USA (online), December 2020.
Wintertime Aerosol observations during MOSAiCEuropean Aerosol Conference - EAC 2020, Aachen, Germany, Septembre, 2020.
Sources and Occurrence of Biological Aerosols over the Pristine Southern OceanECA 2020 European Aerosol Conference, Aachen, Germany (online conference), August 31 – September 4, 2020.
What are the sources of CCN over the Southern Ocean and how sensitive is cloud formation to CCN?ECA 2020 European Aerosol Conference, Aachen, Germany (online conference), August 31 – September 4, 2020.
Sparse Principal Component Analysis as a tool for the exploration of heterogeneous datasets from multidisciplinary field experimentsData Science in Climate and Climate Impact Research, Zürich, Switzerland, August 21, 2020.
Hinaus in Nacht und Kälte: Der Frauenfelder Klimaforscher Ivo Beck nimmt an der grössten Arktisexpedition aller Zeiten teil2020-11-16.
Expedition Arktis – Ein Jahr. Ein Schiff. Im Eis.2020-11-16.
Recit d'une Scientifique en Arctique : Julia Schmale; EPFL Valais2020-10-31.
"Polarstern" zurüch aus dem Eis2020-10-12.
Freiwillige Quarantäne trifft auf Monotonie und kaum Privatsphäre: Klimaforscher aus Frauenfeld ist zurück von Arktisexpedition2020-05-06.
Concentration of particles larger than 2.5 nm collected during the Arctic Ocean 2018 expedition2020-09-23.
Ozone concentration measured during the Arctic Ocean 2018 expedition2020.
Iodic acid, sulfuric acid and methanesulfonic acid collected during the Arctic Ocean 2018 expedition2020.
Sulfuric acid condensation sink calculated for the Arctic Ocean 2018 expedition2020.
Ultrafine particle concentration measured during the Arctic Ocean 2018 expedition2020.
Size distribution of neutral and charged particles smaller than 42 nm collected during the Arctic Ocean 2018 expedition2020.
Size distribution of interstitial and total particles between 18 and 660 nm collected during the Arctic Ocean 2018 expedition2020.
Size distribution of aerosol particles between 2.5 and 920 nm measured during the Arctic Ocean 2018 expedition2020.
Mask to identify polluted periods during the Arctic Ocean 2018 expedition2020.
Frequent new particle formation over the high Arctic pack ice by enhanced iodine emissions, ancillary data2020.
ERA-5 reanalysis results interpolated onto the five-minute average cruise track of the Antarctic Circumnavigation Expedition (ACE) during the austral summer of 2016/20172020.
Distance to the nearest land/coastline (including small subantarctic islands) for the five-minute average cruise track of the Antarctic Circumnavigation Expedition (ACE) during the austral summer of 2016/20172020.
One-minute average cruise track and ship velocity of the Antarctic Circumnavigation Expedition (ACE) undertaken during the austral summer of 2016/20172020.
One-minute average horizontal wind velocity data (not corrected for air-flow distortion) from the Antarctic Circumnavigation Expedition (ACE) 2016/2017 legs 0 to 42020.
Air-flow distortion bias factors of the port and starboard anemometers of the Akademik Tryoshnikov estimated during the Antarctic Circumnavigation Expedition (ACE) legs 0-4 undertaken during the austral summer of 2016/2017.2020.
One-minute average horizontal wind velocity data (which has been corrected for air-flow distortion) from the Antarctic Circumnavigation Expedition (ACE) 2016/2017 legs 0 to 42020.
Five-minute average horizontal wind velocity data combined from both sensors (which has been corrected for air-flow distortion) from the Antarctic Circumnavigation Expedition (ACE) 2016/2017 legs 0 to 42020.
Fostering multidisciplinary research on interactions between chemistry, biology, and physics within the coupled cryosphere-atmosphere systemElementa-Science Of The Anthropocene. 2019-12-30. DOI : 10.1525/elementa.396.
Evaluation of global simulations of aerosol particle and cloud condensation nuclei number, with implications for cloud droplet formationAtmospheric Chemistry And Physics. 2019-07-08. DOI : 10.5194/acp-19-8591-2019.
Variation of Ice Nucleating Particles in the European Arctic Over the Last CenturiesGeophysical Research Letters. 2019. DOI : 10.1029/2019GL082311.
Cloud droplet activation properties and scavenged fraction of black carbon in liquid-phase clouds at the high-alpine research station Jungfraujoch (3580 m a.s.l.)Atmospheric Chemistry and Physics. 2019. DOI : 10.5194/acp-19-3833-2019.
Droplet activation behaviour of atmospheric black carbon particles in fog as a function of their size and mixing stateAtmospheric Chemistry and Physics. 2019. DOI : 10.5194/acp-19-2183-2019.
Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE)Bulletin of the American Meteorological Society. 2019. DOI : 10.1175/BAMS-D-18-0187.1.
Dissolved organic carbon in snow cover of the Chinese Altai Mountains, Central Asia: Concentrations, sources and light-absorption propertiesScience of The Total Environment. 2019. DOI : 10.1016/j.scitotenv.2018.07.417.
In der Arktis: Forschungsboot soll ein Jahr lang im Eis festfrieren – auch Schweizer sind dabei2019-08-16.
Long-term monitoring of black carbon across GermanyAtmospheric Environment. 2018. DOI : 10.1016/j.atmosenv.2018.04.039.
Local Arctic Air Pollution: A Neglected but Serious ProblemEarth's Future. 2018. DOI : 10.1029/2018EF000952.
Long-term cloud condensation nuclei number concentration, particle number size distribution and chemical composition measurements at regionally representative observatoriesAtmospheric Chemistry and Physics. 2018. DOI : 10.5194/acp-18-2853-2018.
Modulation of snow reflectance and snowmelt from Central Asian glaciers by anthropogenic black carbonScientific Reports. 2017. DOI : 10.1038/srep40501.
A survey on the perceived need and value of decision-support tools for joint mitigation of air pollution and climate change in citiesElementa Science of the Anthropocene. 2017. DOI : 10.1525/elementa.126.
Light-absorbing impurities enhance glacier albedo reduction in the southeastern Tibetan plateauJournal of Geophysical Research: Atmospheres. 2017. DOI : 10.1002/2016JD026397.
Collocated observations of cloud condensation nuclei, particle size distributions, and chemical compositionScientific Data. 2017. DOI : 10.1038/sdata.2017.3.
Sustainable policy—key considerations for air quality and climate changeCurrent Opinion in Environmental Sustainability. 2016. DOI : 10.1016/j.cosust.2016.12.003.
Measurement of ammonia emissions from temperate and sub-polar seabird coloniesAtmospheric Environment. 2016. DOI : 10.1016/j.atmosenv.2016.03.016.
Building Interfaces That Work: A Multi-stakeholder Approach to Air Pollution and Climate Change MitigationCommunicating Climate-Change and Natural Hazard Risk and Cultivating Resilience; Springer, Cham, 2016. p. 12.
An Integrated Assessment Method for Sustainable Transport System Planning in a Middle Sized German CitySustainability. 2015. DOI : 10.3390/su7021329.
Short-term solutionsNature Climate Change. 2015. DOI : 10.1038/nclimate2897.
Air pollution: Clean up our skiesNature. 2014. DOI : 10.1038/515335a.
New Directions: Support for integrated decision-making in air and climate policies – Development of a metrics-based information portalAtmospheric Environment. 2014. DOI : 10.1016/j.atmosenv.2014.03.016.
Sub-Antarctic marine aerosol: dominant contributions from biogenic sourcesAtmospheric Chemistry and Physics. 2013. DOI : 10.5194/acp-13-8669-2013.
Physical and chemical properties of pollution aerosol particles transported from North America to Greenland as measured during the POLARCAT summer campaignAtmospheric Chemistry and Physics. 2011. DOI : 10.5194/acp-11-10947-2011.
Source identification and airborne chemical characterisation of aerosol pollution from long-range transport over Greenland during POLARCAT summer campaign 2008Atmospheric Chemistry and Physics. 2011. DOI : 10.5194/acp-11-10097-2011.
Airborne stratospheric ITCIMS measurements of SO2, HCl, and HNO3in the aged plume of volcano KasatochiJournal of Geophysical Research. 2010. DOI : 10.1029/2010JD013890.
Aerosol layers from the 2008 eruptions of Mount Okmok and Mount Kasatochi: In situ upper troposphere and lower stratosphere measurements of sulfate and organics over EuropeJournal of Geophysical Research. 2010. DOI : 10.1029/2009JD013628.
In-situ observations of young contrails – overview and selected results from the CONCERT campaignAtmospheric Chemistry and Physics. 2010. DOI : 10.5194/acp-10-9039-2010.
Teaching & PhD
Environmental Sciences and Engineering
Doctoral Program in Civil and Environmental Engineering