Browsing Luonnontieteiden, metsätieteiden ja tekniikan tiedekunta by Author "Mikkonen, Santtu"

Now showing items 1-12 of 12

    • 100 years of atmospheric and marine observations at the Finnish Utö Island in the Baltic Sea 

      Laakso, Lauri; Mikkonen, Santtu; Drebs, Achim; Karjalainen, Anu; Pirinen, Pentti; Alenius, Pekka (Copernicus GmbH, 2018)
      The Utö Atmospheric and Marine Research Station introduced in this paper is located on Utö Island (59°46.84′N, 21°22.13′E) at the outer edge of the Archipelago Sea, by the Baltic Sea towards the Baltic Proper. Meteorological ...
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    • Combined effects of boundary layer dynamics and atmospheric chemistry on aerosol composition during new particle formation periods 

      Hao, Liqing; Garmash, Olga; Ehn, Mikael; Miettinen, Pasi; Massoli, Paola; Mikkonen, Santtu; Jokinen, Tuija; Roldin, Pontus; Aalto, Pasi; Yli-Juuti, Taina; Joutsensaari, Jorma; Petäjä, Tuukka; Kulmala, Markku; Lehtinen, Kari E J; Worsnop, Douglas R; Virtanen, Annele (Copernicus GmbH, 2018)
      Characterizing aerosol chemical composition in response to meteorological changes and atmospheric chemistry is important to gain insights into new particle formation mechanisms. A BAECC (Biogenic Aerosols – Effects on ...
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    • Comparison of elastic, viscoelastic and failure tensile material properties of knee ligaments and patellar tendon 

      Ristaniemi, Aapo; Stenroth, Lauri; Mikkonen, Santtu; Korhonen, Rami K (Elsevier BV, 2018)
      The knee ligaments and patellar tendon function in concert with each other and other joint tissues, and are adapted to their specific physiological function via geometry and material properties. However, it is not well ...
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    • Comparison of particle number size distribution trends in ground measurements and climate models 

      Leinonen, Ville; Kokkola, Harri; Yli-Juuti, Taina; Mielonen, Tero; Kühn, Thomas; Nieminen, Tuomo; Heikkinen, Simo; Miinalainen, Tuuli; Bergman, Tommi; Carslaw, Ken; Decesari, Stefano; Fiebig, Markus; Hussein, Tareq; Kivekäs, Niku; Krejci, Radovan; Kulmala, Markku; Leskinen, Ari; Massling, Andreas; Mihalopoulos, Nikos; Mulcahy, Jane P; Noe, Steffen M; van Noije, Twan; O'Connor, Fiona M; O'Dowd, Colin; Olivie, Dirk; Pernov, Jakob B; Petäjä, Tuukka; Seland, Øyvind; Schulz, Michael; Scott, Catherine E; Skov, Henrik; Swietlicki, Erik; Tuch, Thomas; Wiedensohler, Alfred; Virtanen, Annele; Mikkonen, Santtu (Copernicus Publications on behalf of the European Geosciences Union, 2022)
      Despite a large number of studies, out of all drivers of radiative forcing, the effect of aerosols has the largest uncertainty in global climate model radiative forcing estimates. There have been studies of aerosol optical ...

    • Cyclic loading regime considered beneficial does not protect injured and interleukin-1-inflamed cartilage from post-traumatic osteoarthritis 

      Eskelinen, Atte SA; Florea, Cristina; Tanska, Petri; Hung, Han-Hwa K; Frank, Eliot H; Mikkonen, Santtu; Nieminen, Petteri; Julkunen, Petro; Grodzinsky, Alan J; Korhonen, Rami K (Elsevier Ltd, 2022)
      Injurious overloading and inflammation perturbate homeostasis of articular cartilage, leading to abnormal tissue-level loading during post-traumatic osteoarthritis. Our objective was to gain time- and cartilage depth-dependent ...

    • Effect of cells on spatial quantification of proteoglycans in articular cartilage of small animals 

      Karjalainen, Kalle; Tanska, Petri; Sibole, Scott C; Mikkonen, Santtu; Herzog, Walter; Korhonen, Rami; Moo, Eng Kuan (Informa UK Limited, 2022)
      Objective Histochemical characterization of proteoglycan content in articular cartilage is important for the understanding of osteoarthritis pathogenesis. However, cartilage cells may interfere with the measurement of ...

    • Identification of new particle formation events with deep learning 

      Joutsensaari, Jorma; Ozon, Matthew; Nieminen, Tuomo; Mikkonen, Santtu; Lähivaara, Timo; Decesari, Stefano; Facchini, M Cristina; Laaksonen, Ari; Lehtinen, Kari EJ (Copernicus GmbH, 2018)
      New particle formation (NPF) in the atmosphere is globally an important source of climate relevant aerosol particles. Occurrence of NPF events is typically analyzed by researchers manually from particle size distribution ...
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    • Multivariate model-based investigation of the temperature dependence of ozone concentration in Finnish boreal forest 

      Isokääntä, Sini; Mikkonen, Santtu; Laurikainen, Maria; Buchholz, Angela; Schobesberger, Siegfried; Blande, James D; Nieminen, Tuomo; Ylivinkka, Ilona; Bäck, Jaana; Petäjä, Tuukka; Kulmala, Markku; Yli-Juuti, Taina (Elsevier Ltd, 2022)
      Tropospheric ozone (O3) concentrations are observed to increase with temperature in urban and rural locations. We investigated the apparent temperature dependency of daytime ozone concentration in the Finnish boreal forest ...

    • Observations on aerosol optical properties and scavenging during cloud events 

      Ruuskanen, Antti; Romakkaniemi, Sami; Kokkola, Harri; Arola, Antti; Mikkonen, Santtu; Portin, Harri; Virtanen, Annele; Lehtinen, Kari E. J.; Komppula, Mika; Leskinen, Ari (Copernicus GmbH, 2021)
      Long-term statistics of atmospheric aerosol and especially cloud scavenging were studied at the Puijo measurement station in Kuopio, Finland, during October 2010–November 2014. Aerosol size distributions, scattering ...
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    • Particle number, mass, and black carbon emissions from fuel-operated auxiliary heaters in real vehicle use 

      Oikarinen, Henri; Olin, Miska; Martikainen, Sampsa; Leinonen, Ville; Mikkonen, Santtu; Karjalainen, Panu (Elsevier Ltd, 2022)
      Fuel-operated auxiliary heaters (AHs) are frequent solutions to heat the vehicle engines and cabins in cold areas. Particulate exhaust emissions of AHs are unregulated; therefore, their contribution to local air quality ...

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

      Yli-Juuti, Taina; Mielonen, Tero; Heikkinen, Liine; Arola, Antti; Ehn, Mikael; Isokääntä, Sini; Keskinen, Helmi-Marja; Kulmala, Markku; Laakso, Anton; Lipponen, Antti; Luoma, Krista; Mikkonen, Santtu; Nieminen, Tuomo; Paasonen, Pauli; Petäjä, Tuukka; Romakkaniemi, Sami; Tonttila, Juha; Kokkola, Harri; Virtanen, Annele (Springer Nature, 2021)
      Aerosol particles cool the climate by scattering solar radiation and by acting as cloud condensation nuclei. Higher temperatures resulting from increased greenhouse gas levels have been suggested to lead to increased ...
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    • The effect of clouds and precipitation on the aerosol concentrations and composition in a boreal forest environment 

      Isokääntä, Sini; Kim, Paul; Mikkonen, Santtu; Kühn, Thomas; Kokkola, Harri; Yli-Juuti, Taina; Heikkinen, Liine; Luoma, Krista; Petäjä, Tuukka; Kipling, Zak; Partridge, Daniel; Virtanen, Annele (Copernicus Publications on behalf of the European Geosciences Union, 2022)
      Atmospheric aerosol particle concentrations are strongly affected by various wet processes, including below and in-cloud wet scavenging and in-cloud aqueous-phase oxidation. We studied how wet scavenging and cloud processes ...