University of Helsinki, Department of Physics
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Affiliated Works
sorted by decreasing year, and then by display-name
- Enhanced Erosion of Carbon Grains in a Hot Plasma
- Meteorite Petrophysics - A Useful Tool to Classify Meteorites and to Estimate the Physical State of the Parent Bodies
- Condensational Growth and Surface Reactivity of Mixed Inorganic and Organic Aerosols: CASOMIO an EC Project
- CO<SUB>2</SUB> Fluxes From a Boreal Lake in Relation to Biological Activities
- Evidence for Terrestrial Magnetic Contamination of the Chondritic Meteorites
- Initial steps of particle formation and growth
- Solar Energetic Particle Event Onset as Analyzed From Simulated Data
- The Role of Post-shock Streams and Sheath Regions in Driving Magnetospheric Activity
- Magnetospheric response to the interplanetary shocks and pressure increases: Cluster observations of sudden impulses in the tail lobes
- Measuring Porosity and Tortuosity of Rocks by Means of Air Ultrasound
- Quiet-time mass and energy transport in GUMICS-4 global MHD simulation, 1: Locations and solar wind control of magnetopause entry sites
- Quiet-time mass and energy transport in GUMICS-4 global MHD simulation, 2: Tracing mass and energy within the magnetosphere
- The possible scenarios of the Neuschwanstein meteorite history based on physical properties
- Magnetomineralogical Investigations Of Yaxcopoil-1 Drill Core Samples
- Continuous Recording of Vertical CO2 Profiles as a Measure of Photosynthetic Activity in a Boreal Lake
- Low temperature magnetic susceptibility behavior of the Neuschwanstein EL6 meteorite and mineral daubreelite (FeCr2S4)
- Magnetic Properties of Melt Particles of Suevitic Samples From the Bosumtwi Impact Structure, Ghana.
- Metal-Ligand Interplay in Strongly Correlated Oxides at Very High Pressure Investigated by X-ray Emission Spectroscopy
- Solar near-relativistic electrons on 2000 May 1: insights into injection and transport along the interplanetary magnetic field.
- A modelling study of the effects of species composition changes on radiation, H2O and CO2 fluxes in a boreal forest ecosystem
- Concentrations of Aerosol related Particulate Matter and its darkening of Arctic Glacier Ice Surfaces
- Methane Dynamics in a Boreal Peatland: Combining Flux Measurements, Concentration Profiles in the Peat and Microbial Ecology at Different Spatial and Temporal Scales
- Observations of Nighttime New Particle Formation in the Troposphere
- Shock Acceleration and Heavy ion Spectral Variability in Large SEP Events
- Cluster Observations of the Local Dynamics of the Quasi-parallel Bow Shock
- Effects of a Severe Drought on a Boreal Forest Ecosystem
- Exceptional Carbon Uptake in European Forests During the 2007 Warm Spring: a Data- Model Analysis.
- Formation of atmospheric nanoparticles
- Injection of Heavy Ions Into Diffusive Shock Acceleration
- Interplanetary Coronal Mass Ejection speeds and temperatures relative to the background solar wind observed at ACE, WIND, and STEREO
- MHD Modeling of Coronal Inquietude Related to CME Lift-off
- Non-linear Evolution of Self-Generated Kolmogorov Turbulence in SEP-Accelerating Coronal Shocks
- Of Bacteria and clouds: when microbial substances trigger cloud formation in Earth 's atmosphere
- Shock recovery experiments in the range of 10 to 45 GPa - comparison of results of synthetic magnetite and terrestrial diabase
- Sulfuric acid and OH in a deciduous forest
- The CME-ICME Connection and Interplanetary Structure During Solar Minimum
- The dependence of aerosol light extinction on relative humidity during the spring 2008 ICEALOT experiment in the European Arctic
- Aerosol remote sensing over land using AATSR
- Analysis of the Arctic System for Freshwater Cycle Intensification: Observations and Expectations
- Anisotropy signatures of solar energetic particle transport along perturbed regions beyond 1 AU
- Applying Non-Extensive Entropy Definition to Turbulent Collisionless Plasmas - a Feasibility Study
- Diffusive Shock Acceleration to Relativistic Energies in the Solar Corona
- Interpreting stem diameter changes
- Multi-point observations of CIR-associated energetic ions
- On the Deflection of CMEs in the Corona
- Origin of monoterpene emissions from boreal tree species: Determination of de novo and pool emissions by 13CO2 labeling
- Particle Acceleration Through Self-generated Waves in a Coronal Shock: The Effect of Shock Obliquity and Pre-heated Particle Populations
- Scots pine chemotypic characterization in a boreal forest stand
- Solar flare electrons at the Sun and near the Earth. Insights from interplanetary transport simulations
- Stellar magnetic fields: observations and nonlinear modeling
- Anthropogenic monoterpene pollution episodes in a forest environment in association with aerosol particles
- Intercomparison of gas analyzers for methane flux measurements
- Mass Spectrometry of Atmospheric Aerosol: 1 nanometer to 1 micron
- Model development for estimations of northern forest GPP from MODIS time series data
- Modelling Methane Dynamics from Northern Wetlands with JSBACH
- Streamer belt control of near-ecliptic ICME rate during the solar cycle 23 minimum
- The CME/ICME relationship for the 3-5 April 2010 and Aug 1-4 2010 events
- VOC Emission and Deposition Eddy Covariance Fluxes above Grassland using PTR-TOF
- A non-OH pathway to H<SUB>2</SUB>SO<SUB>4</SUB> production from the ozonolysis of alkenes in the presence of SO<SUB>2</SUB>
- Atmospheric Ions: Chemical Composition, Diurnal Variation, and Insights into New Particle Formation
- Biological and environmental variables tracking seasonality of CO<SUB>2</SUB> exchange in boreal forests and links to modeling
- CCN activation kinetics: quantifying compositional impacts in polluted and pristine environments
- CME Flux ropes: Origins, Characteristics and Consequences
- Coherent Vibrational and Electronic Spectroscopy for Contrasting Organic Aerosol Particles from Boreal and Tropical Forests during HUMPPA-COPEC-2010 and AMAZE-08
- Contrasting the cloud condensing properties of aerosol particles measured with HTDMA, CCNC and CRDS to their chemical composition measured with HR-AMS on board the R/V Atlantis during the Calnex 2010 campaign
- Effect of chemical degradation on BVOC fluxes
- Influence of Solar Wind Heating Mechanisms on Shocks in the Corona
- Kinetic Simulations of Type II Radio Burst Emission Processes
- Low temperature magnetic properties of nearly- or non-stoichiometric alfa-MnS
- Low-temperature magnetism of troilite and chromite
- Modeling GPP in the Nordic Forest Landscape Using MODIS Time Series Data
- Particle Acceleration in Shock-Shock Collision: Model to Data Comparison
- Stochastic Re-Acceleration of Protons in the Downstream Region of a Coronal Shock
- Testing the Geocentric Axial Model of the Geomagnetic Field Using Inclination Data
- Towards Three-Dimensional Models of Major Solar Energetic Particle Events
- Tower based Photochemical Reflectance Index (PRI) from a new automated spectrometer system for the estimation of seasonal canopy light use efficiency (LUE) in boreal Finland
- Trace gases, aerosols and their interactions with synoptic weather: An overview of in-situ measurements at the SORPES Station in the western Yangtze River Delta, China
- A Comprehensive Analysis of Properties of Small Transients in the Solar Wind in 2007-2009: STEREO-A and Wind Observations
- An overview of present and future multi-point observations of SEP events
- Contribution of organics to atmospheric nanoparticle growth
- Coronal ejections driven by convective dynamo action underneath the surface
- Distributions and Sources of Methanesulfonic Acid (MSA) over the Tropical Pacific Ocean
- Hydroxyl radical measurements and oxidation capacity in a boreal forest environment
- Ion Clusters in Nucleation Experiments in the CERN Cloud Chamber: Sulfuric Acid + Ammonia + Dimethyl Amine + Oxidized Organics
- Long term model studies of aerosol formation and growth in borea forest
- Long-term variations in natural, terrestrial VOC emissions: 1000-1990 AD
- Magnetic Clouds and Solar Sources in STEREO Era
- Measurements of Ocean Derived Aerosol Over the North Atlantic
- Modelling Contribution of Biogenic VOCs to New Particle Formation in the Jülich Plant Atmosphere Chamber
- Modelling and measurement of solar induced fluorescence in a boreal scots pine canopy
- Multi-spacecraft Study of Three Large NR Electron Events Observed by ACE and Ulysses: Injection Histories 70 Degrees Apart
- STEREO solar energetic particle events: 2007-2011
- Seed Population Encounters with Coronal Shocks of Varied Geometry
- Source quantification of size and season resolved aerosols in a semi-urban area of Indo-Gangetic plain, India
- The Role of Oxidized Organics in the Formation of New Particles - Results from the CLOUD Experiment
- The Significance of Land-Atmosphere Processes in the Earth System
- The role of stabilised Criegee intermediate in gas phase H2SO4 formation
- Unraveling the Microphysics of Type II Radio Bursts
- A Simulated Solar Energetic Particle Event at Solar Probe Plus
- A prediction model with the slowest growth of forecast error energy norm
- Atmospherically relevant experiments on new particle formation in the CERN CLOUD chamber (Invited)
- Cause and Properties of the Extreme Space Weather Event of 2012 July 23
- Comparison of PTR-MS and GC-MS measurements of oxidized VOC and aromatic VOC concentrations at a boreal forest
- Development of a nano condensation particle counter battery (nano-CPCb) to infer the composition of freshly formed particles down to 1 nm in the boreal forest
- Ecosystem scale VOC exchange measurements at Bosco Fontana (IT) and Hyytiälä (FI)
- Effects of BC, Icelandic volcanic sand and glaciogenic silt on the spectral reflectance and melt of seasonal Arctic snow (SoS-2013 experiment)
- Evaluating CO2 and CH4 fluxes in Arctic peatland and tundra using a satellite remote sensing driven biophysical model
- First Vlasiator results on foreshock ULF wave activity
- Heliospheric Particle-Shock Interactions with Nontrivial Shock Profiles
- Hubble Space Telescope ACS/WFC Imaging Polarimetry of Comet ISON (C/2012 S1) (Invited)
- ICME-driven sheath regions deplete the outer radiation belt electrons
- In situ observation of dust involved photochemistry over southern China
- Ion Distributions Up- and Downstream of the Earth's Collisionless Bowshock Obtained Using Vlasiator
- Long Term Pattern in Runoff Doc Fluxes in Two Boreal Upland Forested Catchments: does the Increasing Nee Affect Doc Fluxes?
- Magnetic Clouds and their Solar Sources in STEREO Era
- Measurements of Oxidized Organic Compounds during SOAS 2013 using nitrate ion chemical ionization coupled with High Resolution Time-of-Flight Mass Spectrometry
- Modeling Particle Acceleration and Turbulence Generation in CME-driven Shocks in the Solar Corona and Interplanetary Medium (Invited)
- Multiple Scattering of Light by the Surfaces of Asteroids (Invited)
- Predicting the dry deposition of atmospheric aerosol particles onto forests using a size-resolved multi-layer second-order closure model
- The Effect of Cloudiness on New Particle Formation: Investigation of Radiation Levels
- Trace gases, aerosols and their interactions with synoptic weather: An overview of in-situ measurements at the SORPES Station in the western Yangtze River Delta, China
- Understanding and constraining global secondary organic aerosol amount and size-resolved condensational behavior
- Updating the lake-atmosphere gas transfer velocity with impacts on the role of lake ecosystems in global carbon cycling
- Why sulfuric acid forms particles so extremely well, and how organics might still compete
- A Calibration System for Evaluating N<SUB>2</SUB>O Soil Flux Chamber Performance
- Atmospheric sugar alcohols: evaporation rates and saturation vapor pressures
- Hygroscopic properties and cloud condensation nuclei activation of limonene-derived organosulfates and their mixtures with ammonium sulfate
- Linking surface in-situ measurements to columnar aerosol optical properties at Hyytiälä, Finland
- Solar Wind and IMF Control of Large-Scale Ionospheric Currents and Their Time Variations
- The water up-take of semisolid SOA particles
- Winter Precipitation Classification from Two Dimensional Video Disdrometer Data: Observations from Gcpex and Lpvex Experiments
- A new observation-based fitting method assuming an elliptical CME frontal shape and a variable speed
- Comparison of Solar Active Region Complexity Andgeomagnetic Activity from 1996 TO 2014
- First Results on Visualization and Verification of the STEREO Heliospheric Imager CME Catalogue with In Situ Data from the Heliophysics System Observatory
- High Latitude Forest Dynamics - CO<SUB>2 </SUB>EXCHANGE Measurements and Forest Growth at the Altitudinal Forest Line in High Subarctic Finnish Lapland
- Identifying Criegee Intermediates As Potential Oxidants In The Troposphere
- Influence of the Magnetosheath Waves on the Dayside Reconnection
- Ionization, Charging and Electric Field Effects on Cloud Particles in the CLOUD Experiment
- Magnetopause-Foreshock Interactions Induced by Dayside Reconnection
- Role of dayside transients in a substorm process: Results from the global kinetic simulation Vlasiator
- Soil fluxes of carbonyl sulfide (COS) across four distinct ecosystems
- The Climate Mitigation Potential of Managed Boreal Forests Exceeds Their Carbon Store Effect
- Understanding COS Fluxes in a Boreal Forest: Towards COS-Based GPP Estimates.
- <p>Prediction of In-Situ Magnetic Structure of Flux Ropes from Coronal Observations.
- A Catalogue of Geometrically-Modelled Coronal Mass Ejections Observed by the STEREO Heliospheric Imagers
- Assessing the Spatial Variability of Ecosystem Fluxes of Energy and Carbon Dioxide Above a Forest
- Data-Driven Modeling of the Coronal Magnetic Field: Comparing Time-Dependent Magnetofrictional Modeling and Nonlinear Force-free Field Extrapolations
- ENVRIplus - European collaborative development of environmental infrastructures
- Experiments and modeling approaches towards understanding the role of soot and Icelandic volcanic dust in the Arctic cryosphere
- From COS ecosystem fluxes to GPP: integrating soil, branch and ecosystem fluxes.
- High Upward Fluxes of Formic Acid from a Boreal Forest Canopy
- Meteor Observations as Big Data Citizen Science
- Meteoroid Impact Hazard based on Atmospheric Trajectory Analysis
- Methane (CH<SUB>4</SUB>) emissions from tree stems in boreal upland and drained peatland forest
- On the Geo-effectiveness of Shocks and Sheaths
- Reflectance and Polarization Characteristics of Various Vegetation Types: an Advanced Experimental Approach using the FIGIFIGO Goniospectrometer
- 3D Radiative Transfer Code for Polarized Scattered Light with Aligned Grains
- Autoxidation as a source of gas-phase highly-oxidized multifunctional compounds (HOM) - measured by chemical ionization spectrometry (CIMS) utilizing various reagent ion chemistries
- Envri Cluster - a Community-Driven Platform of European Environmental Researcher Infrastructures for Providing Common E-Solutions for Earth Science
- Evolution of the Foreshock Properties with the Interplanetary Magnetic Field Strength: Vlasiator Simulations
- Experimental light scattering by positionally-controlled small particles — Implications for Planetary Science
- Fluorescence Across Space and Time (2017 FAST Campaign): Investigating the multiscale links between fluorescence and photosynthesis
- Insights into the complicated influence of NO<SUB>x</SUB> on the growth of new particles from monoterpene ozonolysis
- Laboratory Measurements of Single-Particle Polarimetric Spectrum
- Modelling the light-scattering properties of a planetary-regolith analog sample
- Multiple Scattering in Planetary Regoliths Using Incoherent Interactions
- Ozone deposition and stomatal uptake at flux tower sites
- Self-organizing Large-scale Structures in Earth's Foreshock Waves
- Solar Wind - Magnetosheath - Magnetopause Interactions in Global Hybrid-Vlasov Simulations
- Temporal variation of ecosystem scale methane emission from a boreal fen in relation to common model drivers
- Upland Trees Contribute to Exchange of Nitrous Oxide (N<SUB>2</SUB>O) in Forest Ecosystems
- Comparative Examination of Ion Energization Mechanisms in Coalescing FTE-Type Flux Ropes
- Distinguishing deterministic from stochastic processes in magnetospheric time series through the use of Jensen-Shannon measure of complexity.
- ENVRI FAIR - the next step towards FAIRer environmental research
- Effect of temporal cadence on the estimates of photospheric energy and helicity fluxes in an eruptive active region NOAA AR 11158
- Evolution of a coronal mass ejection from the Sun to Saturn
- Forecasting space weather driven by coronal mass ejections and their sheath regions
- Modelling the Evolution of AR 12673 Through Time-Dependent Data-Driven Magnetofrictional Simulations
- Multi-spacecraft Observations of Reconnection in a Turbulent ICME Sheath
- On the Eruptivity of the Magnetic Field in Data-driven Time-dependent Coronal Simulations
- Shock erosion caused by cavitons and spontaneous hot flow anomalies in a hybrid-Vlasov global simulation
- Spectroscopic, photometric, and polarimetric modeling of asteroid (4) Vesta
- The Response of the Outer Van Allen Radiation Belt Electron Fluxes to Complex Solar Wind Drivers
- Direct driving of outer belt electron loss by solar wind density structures: A case study and statistical survey with BARREL and satellite data
- Electrostatic Potential and Ion Reflection at a Rippled Perpendicular Shock
- Peatland-dominated boreal ecoregions at risk of drying in a warmer climate
- Radiation Monitor RADMON aboard Aalto-1 CubeSat: First results
- Role of climate model dynamics in estimated climate responses to anthropogenic aerosols
- Space physics curriculum and associated learning goals for graduate students at the University of Helsinki.
- Statistical Analysis of the Outer Radiation Belt and Inner Magnetospheric Response to Sheath Regions of Coronal Mass Ejections
- Using In-Situ Juno Observations to Understand the Radial Evolution of Interplanetary Coronal Mass Ejections.
- Vlasiator Hybrid-Vlasov Simulations and MMS Observations of Flux Transfer Events: a Comparative Analysis
- Vlasiator: Global, Full 6D Hybrid-Vlasov Simulations of Earth's Magnetosphere
- Comprehensive Study of the Response of Outer Radiation Belt and Inner Magnetosphere to Sheath Regions of Coronal Mass Ejections
- Daedalus, a Candidate Mission for the Exploration of the Lower Thermosphere-Ionosphere: Mission Performance Demonstration of Multi-point Sampling Capability
- Magnetic field fluctuation properties in CME-driven sheath regions
- Magnetosheath high speed jets observed with Cluster and MMS with near-Earth upstream solar wind monitors
- The Vlasiator Ionosphere: Coupling an Ionosphere Model to a Global Hybrid-Vlasov Simulation
- Variable Physical Drivers of Near-Surface Turbulence in a Regulated River
- 2.5D local hybrid simulations of ULF wave transmission across collisionless shocks
- A parametric study of the propagation of Alfven waves in the solar corona for varying flux tube expansion factors
- Comparison of Outer Radiation Belt Loss Processes During October 2012 Geomagnetic Storm
- Cross Helicity of Coronal Mass Ejections at 1 au
- Dramatic Changes in Earths Outer Radiation Belt Electrons Caused by Sheath Regions of Coronal Mass Ejections
- Space plasma turbulence and intermittent particle heating
- The First Widespread Solar Energetic Particle Event Observed by Solar Orbiter on 2020 November 29
- The Real Winding Number of Coronal Flux Ropes
- The significance of CME-driven sheath regions as drivers of magntetospheric activity
- The tilting spheromak: implications for coronal mass ejection modelling
- Assessing the formation of CME sheaths via the interaction of solar wind fluctuations with the ejecta
- Dynamics of Carbonyl Sulfide Ecosystem Fluxes at a Boreal Forest, Wetland and River and an African Sisal Plantation
- Evaluation of Carbonyl Sulfide Potential to Constrain Carbon and Water Fluxes of Boreal Evergreen Needleleaf Forests through Data Assimilation in a Land Surface Model
- Everyday Tips for Making the Workplace Culture Welcoming for Diverse Staff and Improving Mental Health
- Fine Structure of Geoeffective Solar Wind Transients Complicating Space Weather Predictions
- Uncertainties in Simulation of Ground Magnetometer Records Arising From Solar Wind Input Errors
Linked Collaborating Authors [?]
- A. Aran
- A. P. Rouillard
- Alexandr Afanasiev
- Allison Jaynes
- Andrew P. Dimmock
- Austin Brenner
- Bernd Heber
- C. M. S. Cohen
- Camille Abadie
- Christian Möstl
- D. L. Turner
- D. Lario
- Daniel J. Price
- Daniel Pacheco
- David Burgess
- Dominique Fontaine
- Eleanna Asvestari
- Emiliya Yordanova
- Fabienne Maignan
- Fernando Carcaboso
- G. C. Ho
- G. Cunningham
- G. D. Reeves
- G. M. Mason
- G. Valori
- Harriet George
- I. G. Richardson
- Ivan Mammarella
- J. L. Freiherr von Forstner
- J. M. Trigo-Rodríguez
- J. Souček
- Johannes Markkanen
- Kazue Takahashi
- Konrad Steinvall
- Lucile Turc
- Luis Preisser
- M. G. Henderson
- Maarit J. Korpi-Lagg
- Matti Ala‐Lahti
- Milla Kalliokoski
- Minna Palmroth
- Nicolas Wijsen
- O. Malandraki
- Petri J. Käpylä
- Primož Kajdič
- R. Bučík
- R. C. Allen
- Robert F. Wimmer‐Schweingruber
- S. D. Bale
- S. Morley
- Simon Good
- Stefaan Poedts
- Tanja Amerstorfer
- Teresa Nieves‐Chinchilla
- Timo Vesala
- Tobias Rindlisbacher
- Tuija Pulkkinen
- Veli-Matti Pelkonen
- Vratislav Krupař
- Z. Vörös
- Zigong Xu