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Üllar Rannik

https://www.etis.ee/CV/Üllar_Rannik/est
5.10.1968
+372 53481663
ullar.rannik@heuristica.ee

Teenistuskäik

Töökohad ja ametid
01.01.1998–...   
Helsingi Ülikool, Matemaatika-Loodusteaduskond, Füüsika osakond; Teadur
01.01.1995–31.12.1997   
Helsingi Ülikool, Matemaatika-Loodusteaduskond, Füüsika osakond; Assistent
 
 
Haridustee
1994–1998   
Helsingi Ülikool, Matemaatika-Loodusteaduskond, doktorantuur
1992–1994   
Tartu Ülikool, Füüsika-keemia teaduskond, Keskkonnafüüsika osakond, füüsikamagister
1987–1992   
Tartu Ülikool, Füüsika-keemia teaduskond, Füüsika osakond, geofüüsika
 
 
Lisainfo
Alates 2000 a. Helsingi Ülikooli dotsent

Kvalifikatsioon

Teaduskraadid
Üllar Rannik, doktorikraad, 1998, (juh) Timo Vesala; Markku Kulmala, Turbulent Atmosphere: Vertical Fluxes Above a Forest and Particle Growth, Helsingi Ülikool.
Üllar Rannik, magistrikraad (teaduskraad), 1994, (juh) Olavi Kärner, Pilvkatte mõjust lühilainelisele kiirgusväljale ja selle ajalisest muutlikkusest, Tartu Ülikool, Füüsika-keemiateaduskond, Keskkonnafüüsika instituut.
 
 
Teaduspreemiad ja tunnustused
2004, Üllar Rannik, Maj ja Tor Nesslingi Fondi grant projektile "Aerosoolide kuivdepositsioon metsa - mõõtmised ja modelleerimine"
1998, Üllar Rannik, Auhind teoreetilise töö eest aerosoolifüüsikas, väljaandja Soome Aerosooliteaduste Assotsiatsioon
1995, Üllar Rannik, Põhjamaade Minitrite Nõukogu grant doktoriõppeks
 
 
Teadustöö põhisuunad
ETIS KLASSIFIKAATOR: 4. Loodusteadused ja tehnika; 4.2. Maateadused; CERCS KLASSIFIKAATOR: P500 Geofüüsika, füüsikaline okeanograafia, meteoroloogia ; TÄPSUSTUS: Atmosfääri piirkihi füüsika, mikrometeoroloogia, voogude mõõtmistehnikad, aerosoolide ja gaaside kuivdepositsioon
 
 
Lisainfo
Teadusajakirjade arvustaja (J. Aerosol Sci., J. Applied Meteorol., J. Atmos. Sci., J. Geophys. Res., Aerosol Sci. Technol., Agric. Forest Meteorol., Atmosfera, Atmos. Chem. Phys., Atmos. Environm., Biogeosci., Boreal Environm. Res., Boundary Layer Meteorol., Geoscientific Model Development, Tellus B, Environmental Science: Nano)
Doktoridissertatsiooni “Data cycle in atmospheric physics: From detected millivolts to understanding the atmosphere” oponent, autor Heikki Junninen, Helsingi Ülikool (avalik kaitsmine 14. jaanuar 2014)

Lõppenud projektid

Juhendatud väitekirjad

Publikatsioonid

Klass
Aasta
Publikatsioon
 
1.1.
2020
Rannik, Üllar; Vesala, Timo; Peltola, Olli; Novick, Kimberly A.; Aurela, Mika; Järvi, Leena; Montagnani, Leonardo; Mölder, Meelis; Peichl, Matthias; Pilegaard, Kim; Mammarella, Ivan (2020). Impact of coordinate rotation on eddy covariance fluxes at complex sites. Agricultural and Forest Meteorology, 287, 107940. DOI: 10.1016/j.agrformet.2020.107940.
1.1.
2018
Jarvi, Leena; Rannik, Ullar; Kokkonen, Tom, V; Kurppa, Mona; Karppinen, Ari; Kouznetsov, Rostislav D.; Rantala, Pekka; Vesala, Timo; Wood, Curtis R. (2018). Uncertainty of eddy covariance flux measurements over an urban area based on two towers. Atmospheric Measurement Techniques Discussions, 11 (10), 5421−5438. DOI: 10.5194/amt-11-5421-2018.
1.1.
2017
Zhou, P.; Ganzeveld, L.; Rannik, Ü.; Zhou, L.; Gierens, R.; Taipale, D.; Mammarella, I.; Boy, M. (2017). Simulating ozone dry deposition at a boreal forest with a multi-layer canopy deposition model. Atmospheric Chemistry and Physics, 17, 1361−1379.10.5194/acp-17-1361-2017.
1.1.
2017
Arriga, N., Rannik, Ü., Aubinet, M., Carrara, A., Vesala, T., and Papale, D. (2017). Experimental validation of footprint models for eddy covariance CO2 flux measurements above grassland by means of natural and artificial tracers. Agricultural and Forest Meteorology, 242, 75−84.10.1016/j.agrformet.2017.04.006.
1.1.
2017
Auvinen, M., Järvi, L., Hellsten, A., Rannik, Ü., and Vesala, T. (2017). Numerical Framework for the Computation of Urban Flux Footprints Employing Large-eddy Simulation and Lagrangian Stochastic Modeling. Geoscientific Model Development, 10, 4187−4205.10.5194/gmd-10-4187-2017.
1.1.
2017
Nöjd, P., Korpela, M., Hari, P., Rannik, Ü., Sulkava, M., Hollmén, J., Mäkinen, H. (2017). Effects of precipitation and temperature on the growth variation of Scots pine—A case study at two extreme sites in Finland. Dendrochronologia, 46, 35−45. DOI: 10.1016/j.dendro.2017.09.003.
1.1.
2017
Zhou, P., Ganzeveld, L., Taipale, D., Rannik, Ü., Rantala, P., Rissanen, M.P., Chen, D., and Boy, M. (2017). Boreal forest BVOC exchange: emissions versus in-canopy sinks. Atmospheric Chemistry and Physics, 17, 14309−14332.10.5194/acp-17-14309-2017.
1.1.
2016
Rannik, Ü.; Zhou, L.; Zhou, P.; Gierens, R.; Mammarella, I.; Sogachev, A.; Boy, M. (2016). Aerosol dynamics within and above forest in relation to turbulent transport and dry deposition. Atmospheric Chemistry and Physics, 16, 3145−3160.
1.1.
2016
Shurpali, N.J.; Rannik, Ü.; Jokinen, S.; Lind, S.; Biasi, C.; Mammarella, I.; Peltola, O.; Pihlatie, M.; Hyvönen, N.; Räty, M.; Haapanala, S.; Zahniser, M.; Virkajärvi, P.; Vesala, T.; Martikainen, P.J. (2016). Neglecting diurnal variations leads to uncertainties in terrestrial nitrous oxide emissions. Scientific Reports, 6 (25739), -−-.10.1038/srep25739.
1.1.
2016
Mammarella, I.; Peltola, O.; Nordbo, A.; Järvi, L.; and Rannik, Ü. (2016). Quantifying the uncertainty of eddy covariance fluxes due to the use of different software packages and combinations of processing steps in two contrasting ecosystems. Atmospheric Measurement Techniques Discussions, 9, 4915−4933. DOI: 10.5194/amt-9-4915-2016.
1.1.
2016
Pihlatie, M.; Rannik, Ü.; Haapanala, S.; Peltola, O.; Shurpali, N.; Martikainen, P. J.; Lind, S.; Hyvönen, N.; Virkajärvi, P.; Zahniser, M.; and Mammarella, I. (2016). Seasonal and diurnal variation in CO fluxes from an agricultural bioenergy crop. Biogeosciences, 13, 5471−5485.10.5194/bg-13-5471-2016.
1.1.
2016
Glazunov, A.; Rannik, Ü.; Stepanenko, V. M.; Lykosov, V. N.; Mammarella, I.; Auvinen, M.; Vesala, T. ; and Ivan Mammarella (2016). Large-eddy simulation and stochastic modeling of Lagrangian particles for footprint determination in the stable boundary layer. Geoscientific Model Development, 9, 2925−2949.10.5194/gmd-9-2925-2016.
1.1.
2016
Babkovskaia, N.; Rannik, Ü.; Phillips, V.; Siebert, H.; Wehner, B.; and Boy, M (2016). A DNS study of aerosol and small-scale cloud turbulence interaction. Atmospheric Chemistry and Physics, 16, 7889−7898.10.5194/acp-16-7889-2016.
1.1.
2016
Rannik, Ü.; Peltola, O.; and Mammarella, I. (2016). Random uncertainties of flux measurements by the eddy covariance technique. Atmospheric Measurement Techniques Discussions, 9, 5163−5181.10.5194/amt-9-5163-2016.
1.1.
2015
Lönnell, N.; Norros, V.; Sundberg, S.; Rannik, Ü.; Johansson, V.; Ovaskainen, O.; Hylander, K. (2015). Testing a mechanistic dispersal model against a dispersal experiment with a wind-dispersed moss. Oikos, 001−009.10.1111/oik.01886.
1.1.
2015
Rannik, Ü.; Haapanala, S.; Shurpali, N. J.; Mammarella, I.; Lind, S.; Hyvönen, N.; Peltola, O.; Zahniser, M.; Martikainen, P. J.; Vesala, T. (2015). Intercomparison of fast response commercial gas analysers for nitrous oxide flux measurements under field condition. Biogeosciences, 12, 415−432.10.5194/bg-12-415-2015.
1.1.
2015
Babkovskaia, N.; Boy, M.; Smolander, S.; Romakkaniemi, S.; Rannik, Ü.; Kulmala, M. (2015). A study of aerosol activation at the cloud edge with high resolution numerical simulations. Atmospheric Research, 153, 49−58. DOI: 10.1016/j.atmosres.2014.07.017.
1.1.
2015
Johansson, V.; Lönnell, N.; Rannik, Ü.; Sundberg, S.; Hylander, K. (2015). Air humidity thresholds trigger active moss spore release to extend dispersal in space and time. Functional Ecology, n/a− n/a.10.1111/1365-2435.12606.
1.1.
2015
Mammarella, I.; Nordbo, A.; Rannik, Ü.; Haapanala, S.; Levula, J.; Laakso, H.; Ojala, A.; Peltola, O.; Heiskanen, J.; Pumpanen, J.; Vesala, T. (2015). Eddy covariance measurements of carbon dioxide and energy fluxes over a small boreal lake in Southern Finland. Journal of Geophysical Research Biogeosciences, 120, 7, 1296−1314. DOI: 10.1002/2014JG002873.
1.1.
2014
Järvi, L.; Nordbo, A.; Rannik, Ü.; Haapanala, S.; Riikonen, A.; Mammarella, I.; Pihlatie, M.; Vesala, T. (2014). Urban nitrous oxide fluxes measured using the eddy-covariance technique in Helsinki, Finland. Boreal Environment Research, 19, 108−121.
1.1.
2014
Norros, V.; Rannik, Ü.; Hussein, T.; Petäjä, T.; Vesala, T.; Ovaskainen, O. (2014). Do small spores disperse further than large spores? Ecology, 95, 1612−1621.
1.1.
2013
Alekseychik, Pavel; Mammarella, Ivan; Launiainen, Samuli; Rannik, Üllar; Vesala, Timo (2013). Evolution of the nocturnal decoupled layer in the pine forest canopy. Agricultural and Forest Meteorology, 15−27.10.1016/j.agrformet.2013.01.011.
1.1.
2013
Wang, Kai; Zheng, Xunhua; Pihlatie, Mari; Vesala, Timo; Liu, Chunyan; Haapanala, Sami; Mammarella, Ivan; Rannik, Üllar; Liu, Huizhi (2013). Comparison between static chamber and tunable diode laser-based eddy covariance techniques for measuring nitrous oxide fluxes from a cotton field. Agricultural and Forest Meteorology, 171, 9−19.10.1016/j.agrformet.2012.11.009.
1.1.
2013
Hussein, Tareq; Norros, Veera; Hakala, Jani; Petäjä, Tuukka; Aalto, Pasi P.; Rannik, Üllar; Vesala, Timo; Ovaskainen, Otso (2013). Species Traits and Inertial Deposition of Fungal Spores. Journal of Aerosol Science, 1−32.10.1016/j.jaerosci.2013.03.004.
1.1.
2012
Rinne, J.; Markkanen, T.; Ruuskanen, T.M.; Petäjä, T.; Keronen, P.; Tang, M.J.; Crowley, J.N.; Rannik, Ü.; Vesala, T. (2012). Effect of chemical degradation on fluxes of reactive compounds –a study with a stochastic Lagrangian transport model. Atmospheric Chemistry and Physics, 12 (11), 4843−4854.10.5194/acp-12-4843-2012.
1.1.
2012
Rannik, Ü.; Altimir, N.; Mammarella, I.; Bäck, J.; Rinne, J.; Ruuskanen, T.M.; Hari, P.; Vesala, T.; Kulmala, M. (2012). Ozone deposition into a boreal forest over a decade of observations: evaluating deposition partitioning and driving variables. Atmospheric Chemistry and Physics, 12 (24), 12165−12182.10.5194/acp-12-12165-2012.
3.1.
2012
Rannik, Ü.; Sogachev, A.; Foken, T.; Göckede, M.; Kljun, N.; Leclerc, M.Y.; Vesala, T. (2012). Footprint Analysis. In: Aubinet, Marc; Vesala, Timo; Papale, Dario (Ed.). Eddy Covariance A Practical Guide to Measurement and Data Analysis (211−261). Springer. DOI: 10.1007/978-94-007-2351-1.
1.1.
2011
Lauros, J.; Sogachev, A.; Smolander, S.; Vuollekoski, H.; Sihto, S.-L.; Mammarella, I.; Laakso, L.; Rannik, Ü., Boy, M. (2011). Particle concentration and flux dynamics in the atmospheric boundary layer as the indicator of formation mechanism. Atmospheric Chemistry and Physics, 11 (12), 5591−5601.10.5194/acp-11-5591-2011.
1.1.
2010
Ilvesniemi, H.; Pumpanen, J.; Duursma, R.; Hari, P.; Keronen, P.; Kolari, P.; Kulmala, M.; Mammarella, I.; Nikinmaa, E.; Rannik, Ü.; Pohja, T.; Siivola, E.; Vesala, T. (2010). Water balance of a boreal scots pine forest. Boreal Environment Research, 15, 375−396.
1.1.
2010
Mammarella, I.; Werle, P.; Pihlatie, M.; Eugster, W.; Haapanala, S.; Kiese, R.; Markkanen, T.; Rannik, Ü.; Vesala, T. (2010). A case study of eddy covariance flux of N2O measured within forest ecosystems: quality control and flux error analysis. Biogeosciences, 7 (2), 427−440.10.5194/bg-7-427-2010.
1.1.
2009
Järvi, L.; Rannik, Ü.; Mammarella, I.; Sogachev, A.; Aalto, P.P.; Keronen, P.; Siivola, E.; Kulmala, M.; Vesala, T. (2009). Annual particle flux observations over a heterogeneous urban area. Atmospheric Chemistry and Physics, 9 (20), 7847−7856.
1.1.
2009
Mammarella, I.; Launiainen, S.; Gronholm, T.; Keronen, P.; Pumpanen, J.; Rannik, Ü.; Vesala, T. (2009). Relative Humidity Effect on the High-Frequency Attenuation of Water Vapor Flux Measured by a Closed-Path Eddy Covariance System. Journal of Atmospheric and Oceanic Technology, 26 (9), 1856−1866. DOI: 10.1175/2009JTECHA1179.1.
1.1.
2009
Rannik, Ü.; Mammarella, I.; Keronen, P.; Vesala, T. (2009). Vertical advection and nocturnal deposition of ozone over a boreal pine forest. Atmospheric Chemistry and Physics, 9 (6), 2089−2095.
1.1.
2009
Rannik, Ü.; Mammarella, I.; Aalto, P.; Keronen, P.; Vesala, T.; Kulmala, M. (2009). Long-term aerosol particle flux observations Part I: Uncertainties and time-average statistics. Atmospheric Environment, 43 (21), 3431−3439. DOI: 10.1016/j.atmosenv.2009.02.049.
1.1.
2008
Grönholm, T.; Haapanala, S.; Launiainen, S.; Rinne, J.; Vesala, T.; Rannik, Ü. (2008). The dependence of the beta coefficient of REA system with dynamic deadband on atmospheric conditions. Environmental Pollution, 152 (3), 597−603. DOI: 10.1016/j.envpol.2007.06.071.
1.1.
2008
Vesala, T.; Järvi, L.; Launiainen, S.; Sogachev, A.; Rannik, Ü.; Mammarella, I.; Siivola, E.; Keronen, P.; Rinne, J.; Riikonen, A.; Nikinmaa, E. (2008). Surface-atmosphere interactions over complex urban terrain in Helsinki, Finland. Tellus. Series B: Chemical and Physical Meteorology, 60 (2), 188−199. DOI: 10.1111/j.1600-0889.2007.00312.x.
1.1.
2008
Vesala, T.; Kljun, N.; Rannik, Ü.; Rinne, J.; Sogachev, A.; Markkanen, T.; Sabelfeld, K.; Foken, Th.; Leclerc, M.Y. (2008). Flux and concentration footprint modelling: State of the art. Environmental Pollution, 152 (3), 653−666. DOI: 10.1016/j.envpol.2007.06.070.
1.1.
2008
Sogachev, A.; Leclerc, M.Y.; Zhang, G.; Rannik, Ü.; Vesala, T. (2008). CO2 fluxes NEAR a forest edge: a numerical study. Ecological Applications, 18 (6), 1454−1469. DOI: 10.1890/06-1119.1.
1.1.
2008
Pryor, S.C.; Barthelmie, R.J.; Sørensen, L.L.; Larsen, S.E.; Sempreviva, A.M.; Grönholm, T.; Rannik, Ü.; Kulmala, M.; Vesala, T. (2008). Upward fluxes of particles over forests: when, where,why? Tellus. Series B: Chemical and Physical Meteorology, 60 (3), 372−380. DOI: 10.1111/j.1600-0889.2008.00341.x.
3.1.
2008
Rannik, Ü.; Vesala, T.; Sogacheva, L.; Hari, P. (2008). Environmental factors. Chapter 3. In: Hari, Pertti; Kulmala, Liisa (Ed.). Boreal Forest and Climate Change (57−74). Springer. (Advances in Global Change Research; 34). DOI: 10.1007/978-1-4020-8718-9_3.
3.1.
2008
Rannik, Ü.; Kolari, P.; Launiainen, S. (2008). Environmental Factors in the Canopy. Chapter 7.3. In: Hari, Pertti; Kulmala, Liisa (Ed.). Boreal Forest and Climate Change (298−305). Springer. (Advances in Global Change Research; 34).
1.1.
2007
Grönholm, T.; Aalto, P.P.; Hiltunen, V.; Rannik, Ü.; Rinne, J.; Laakso, L.; Hyvönen, S.; Vesala, T.; Kulmala, M. (2007). Measurements of aerosol particle dry deposition velocity using the relaxed eddy accumulation technique. Tellus. Series B: Chemical and Physical Meteorology, 59 (3), 381−386. DOI: 10.1111/j.1600-0889.2007.00268.x.
1.1.
2007
Pryor, S.C.; Larsen, S.E.; Sørensen, L.L.; Barthelmie, R.J.; Grönholm, T.; Kulmala, M.; Launiainen, S.; Rannik, Ü.; Vesala, T. (2007). Particle fluxes over forests: Analyses of flux methods and functional dependencies. Journal of Geophysical Research Atmospheres, 112, D07205. DOI: 10.1029/2006JD008066.
1.1.
2007
Launiainen, S.; Vesala, T.; Mölder, M.; Mammarella, I.; Smolander, S.; Rannik, Ü.; Kolari, P.; Hari, P.; Lindroth, A.; Katul, G.G. (2007). Vertical variability and effect of stability on turbulence characteristics down to the floor of a pine forest. Tellus. Series B: Chemical and Physical Meteorology, 59 (5), 919−936. DOI: 10.1111/j.1600-0889.2007.00313.x.
1.1.
2006
Vesala, T.; Huotari, J.; Rannik, Ü.; Suni, T.; Smolander, S.; Sogachev, A.; Ojala, A. (2006). Eddy covariance measurements of carbon exchange and latent and sensible heat fluxes over a boreal lake for a full open-water period. Journal of Geophysical Research Atmospheres, 111, D11101. DOI: 10.1029/2005JD006365.
1.1.
2006
Rannik, Ü.; Kolari, P.; Vesala, T.; Hari, P. (2006). Uncertainties in measurement and modelling of net ecosystem exchange of a forest. Agricultural and Forest Meteorology, 138, 244−257. DOI: 10.1016/j.agrformet.2006.05.007.
1.1.
2005
Rebmann, C.; Göckede, M.; Foken, T.; Aubinet, M.; Aurela, M.; Berbigier, P.; Bernhofer, C.; Buchmann, N.; Carrara, A.; Cescatti, A.; Ceulemans, R.; Clement, R.; Elbers, J.A.; Granier, A.; Grünwald, T.; Guyon, D.; Havránkova, K.; Heinesch, B.; Knohl, A.; Laurila, T. ... Yakir, D. (2005). Quality analysis applied on eddy covariance measurements at complex forest sites using footprint modelling. Theoretical and Applied Climatology, 80, 121−141. DOI: 10.1007/s00704-004-0095-y.
1.1.
2005
Geever, M.; O'Dowd, C.; van Ekeren, S.; Flanagan, R.; Nilsson, D.; de Leeuw, G.; Rannik, Ü. (2005). Submicron Sea Spray Fluxes. Geophysical Research Letters, 32 (15), L15810. DOI: 10.1029/2005GL023081.
1.1.
2005
Pihlatie, M.; Rinne, J.; Ambus, P.; Pilegaard, K.; Dorsey, J.R.; Rannik, U.; Markkanen, T.; Launiainen, S.; Vesala, T. (2005). Nitrous oxide emissions from a beech forest floor measured by eddy covariance and soil enclosure techniques. Biogeosciences, 2 (4), 377−387.
1.1.
2005
Vesala, T.; Suni, T.; Rannik, Ü.; Keronen, P.; Markkanen, T.; Sevanto, S.; Gronholm, T.; Smolander, S.; Kulmala, M.; Ilvesniemi, H.; Ojansuu, R.; Uotila, A.; Levula, J.; Makela, A.; Pumpanen, J.; Kolari, P.; Kulmala, L.; Altimir, N.; Berninger, F.; Nikinmaa, E. ... Hari, P. (2005). Effect of thinning on surface fluxes in a boreal forest. Global Biogeochemical Cycles, 19 (2), GB2001. DOI: 10.1029/2004GB002316.
1.1.
2005
Ilvesniemi, H.; Kähkönen, M.A.; Pumpanen, J.; Rannik, Ü.; Wittmann, C.; Perämäki, M.; Keronen, P.; Hari, P.; Vesala, T.; Salkinoja-Salonen, M. (2005). Wintertime CO2 evolution from a boreal forest ecosystem. Boreal Environment Research, 10 (5), 401−408.
1.1.
2004
Gaman, A.; Rannik, Ü.; Aalto, P.; Pohja, T.; Siivola, E.; Kulmala, M.; Vesala, T. (2004). Relaxed Eddy Accumulation System for Size-Resolved Aerosol Particle Flux Measurements. Journal of Atmospheric and Oceanic Technology, 21 (6), 933−943. DOI: 10.1175/1520-0426(2004)021<0933:REASFS>2.0.CO;2.
1.1.
2004
Boy, M.; Petäjä, T.; Dal Maso, M.; Rannik, Ü.; Rinne, J.; Aalto, P.; Laaksonen, A.; Vaattovaara, P.; Joutsensaari, J.; Hoffmann, T.; Warnke, J.; Apostolaki, M.; Stephanou, E.G.; Tsapakis, M.; Kouvarakis, A.; Pio, C.; Carvalho, A.; Römpp, A.; Moortgat, G.; Spirig, C. ... Kulmala, M. (2004). Overview of the field measurement campaign in Hyytiälä, August 2001 in the framework of the EU project OSOA. Atmospheric Chemistry and Physics, 4, 657−678.
1.1.
2004
Kulmala, M.; Suni, T.; Lehtinen, K.E.J.; Dal Maso, M.; Boy, M.; Reissell, A.; Rannik, Ü.; Aalto, P.; Keronen, P.; Hakola, H.; Bäck, J.; Hoffmann, T.; Vesala, T.; Hari, P. (2004). A New Feedback Mechanism Linking Forests, Aerosols, and Climate. Atmospheric Chemistry and Physics, 4, 557−562.
1.1.
2004
Kulmala, M.; Boy, M.; Suni, T.; Gaman, A.; Raivonen, M.; Aaltonen, V.; Adler, H.; Anttila, T.; Fiedler, V.; Grönholm, T.; Hellén, H.; Herrmann, E.; Jalonen, R.; Jussila, M.; Komppula, M.; Kosmale, M.; Plauskaite, K.; Reis, R.; Savola, N.; Soini, P. ... Hari, P. (2004). Aerosols in boreal forest: wintertime relations between formation events and bio-geo-chemical activity. Boreal Environment Research, 9 (1), 63−74.
1.1.
2004
Kolari, P.; Pumpanen, J.; Rannik, Ü.; Ilvesniemi, H.; Hari, P.; Berninger, F. (2004). Carbon balance of different aged Scots pine forests in Southern Finland. Global Change Biology, 10 (7), 1106−1119. DOI: 10.1111/j.1529-8817.2003.00797.x.
1.1.
2004
Kowalski, A.S.; Loustau, D.; Berbigier, P.; Manca, G.; Tedeschi, V.; Borghetti, M.; Valentini, R.; Kolari, P.; Berninger, F.; Rannik, Ü.; Hari, P.; Rayment, M.; Mencuccini, M.; Moncrieff, J.; Grace, J. (2004). Paired comparisons of carbon exchange between undisturbed and regenerating stands in four managed forests in Europe. Global Change Biology, 10 (10), 1707−1723. DOI: 10.1111/j.1365-2486.2004.00846.x.
1.1.
2004
Vehkamäki, H.; Dal Maso, M.; Hussein, T.; Flanagan, R.; Hyvärinen, A.; Lauros, J.; Merikanto, J.; Mönkkönen, P.; Pihlatie, M.; Salminen, K.; Sogacheva, L.; Thum, L.; Ruuskanen, T.; Keronen, P.; Aalto, P.P.; Hari, P.; Lehtinen, K.E.J.; Rannik, Ü.; Kulmala, M. (2004). Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998 – 2002. Atmospheric Chemistry and Physics, 4, 2015−2023.
1.1.
2004
Sogachev, A.; Rannik, U.; Vesala, T. (2004). Flux footprints over complex terrain covered by heterogeneous forest. Agricultural and Forest Meteorology, 127, 143−158. DOI: 10.1016/j.agrformet.2004.07.010.
1.1.
2004
Vesala, T.; Rannik, Ü.; Leclerc, M.; Foken, T.; Sabelfeld, K. (2004). Flux and concentration footprints. Agricultural and Forest Meteorology, 127, 111−116. DOI: 10.1016/j.agrformet.2004.07.007.
1.1.
2004
Rannik, Ü.; Keronen, P.; Hari, P.; Vesala, T. (2004). Estimation of forest-atmosphere CO2 exchange by eddy covariance and profile techniques. Agricultural and Forest Meteorology, 126, 141−155. DOI: 10.1016/j.agrformet.2004.06.010.
1.1.
2004
Lehtinen, K.E.J.; Rannik, Ü.; Petäjä, T.; Kulmala, M.; Hari, P. (2004). Nucleation rate and vapor concentration estimations using a least squares aerosol dynamics method. Journal of Geophysical Research Atmospheres, 109, D21209. DOI: 10.1029/2004JD004893.
1.2.
2004
Petäjä, T.; Lehtinen, K.E.J.; Rannik, Ü.; Kulmala, M. (2004). Condensable vapour concentrations and aerosol formation rates in toluene oxidation experiments using a least-squares aerosol dynamics model. Journal of Aerosol Science, 35 (1), 355−368. DOI: 10.1016/j.jaerosci.2004.06.073.
1.1.
2003
Churkina, G.; Tenhunen, J.; Thornton, P.; Falge, E.M.; Elbers, J.A.; Erhard, M.; Grünwald, T.; Kowalski, A.S.; Rannik, Ü.; Sprinz, D.F. (2003). Analyzing the ecosystem carbon dynamics of four European coniferous forests using a biogeochemistry model. Ecosystems, 6 (2), 168−184. DOI: 10.1007/s10021-002-0197-2.
1.1.
2003
Buzorius, G.; Rannik, Ü.; Nilsson, E.D.; Vesala, T.; Kulmala, M. (2003). Analysis of measurement techniques to determine dry deposition velocities of aerosols with diameters less than 100 nm. Journal of Aerosol Science, 34 (6), 747−764. DOI: 10.1016/S0021-8502(03)00025-9.
1.1.
2003
Markkanen, T.; Rannik, Ü.; Marcolla, B.; Cescatti, A.; Vesala, T. (2003). Footprints and fetches for fluxes over forest canopies with varying structure and density. Boundary-Layer Meteorology, 437−459. DOI: 10.1023/A:1021261606719.
1.1.
2003
Rannik, Ü.; Markkanen, T.; Raittila, J.; Hari, P.; Vesala, T. (2003). Turbulence statistics inside and over forest: influence on footprint prediction. Boundary-Layer Meteorology, 109 (2), 163−189. DOI: 10.1023/A:1025404923169.
1.1.
2003
Laakso, L.; Grönholm, T.; Rannik, Ü.; Kosmale, M.; Fiedler, V.; Vehkamäki, H.; Kulmala, M. (2003). Ultrafine particle scavenging coefficients calculated from 6 years field measurements. Atmospheric Environment, 37 (25), 3605−3613. DOI: 10.1016/S1352-2310(03)00326-1.
1.1.
2003
Keronen, P.; Reissell, A.; Rannik, Ü.; Pohja, T.; Siivola, E.; Hiltunen, V.; Hari, P.; Kulmala, M.; Vesala, T. (2003). Ozone flux measurements over a Scots pine forest using eddy covariance method: performance evaluation and comparison with flux-profile method. Boreal Environment Research, 8 (4), 425−443.
1.1.
2003
Suni, T.; Rinne, J.; Reissell, A.; Altimir, N.; Keronen, P.; Rannik, Ü.; Dal Maso, M.; Kulmala, M.; Vesala, T. (2003). Long-term measurements of surface fluxes above a Scots pine forest in Hyytiälä, Southern Finland, 1996 – 2001. Boreal Environment Research, 8 (4), 287−301.
1.1.
2003
Suni, T.; Berninger, F.; Markkanen, T.; Keronen, P., Rannik, Ü.; Vesala, T. (2003). Interannual variability and timing of growing-season CO2 exchange in a boreal forest. Journal of Geophysical Research Atmospheres, 108, No 4265. DOI: 10.1029/2002JD002381.
1.1.
2003
Buzorius, G.; Rannik, Ü.; Aalto, P.; dal Maso, M.; Nilsson, E.D.; Lehtinen, K.E.J.; Kulmala, M. (2003). On particle formation prediction in continental boreal forest using micrometeorological parameters. Journal of Geophysical Research Atmospheres, 108, No 4377. DOI: 10.1029/2002JD002850.
1.1.
2003
Rannik, Ü.; Aalto, P.; Keronen, P.; Vesala, T.; Kulmala, M. (2003). Interpretation of aerosol particle fluxes over a pine forest: Dry deposition and random errors. Journal of Geophysical Research Atmospheres, 108, No 4544. DOI: 10.1029/2003JD003542.
1.1.
2003
Boy, M.; Rannik, Ü.; Lehtinen, K.E.J.; Tarvainen, V.; Hakola, H.; Kulmala, M. (2003). Nucleation events in the cointinental boundary layer: Long-term statistical analyses of aerosol relevant characteristics. Journal of Geophysical Research Atmospheres, 108, No 4667. DOI: 10.1029/2003JD003838.
1.2.
2003
Kurbanmuradov, O.; Levykin, A.I.; Rannik, Ü.; Sabelfeld, K.; Vesala, T. (2003). Stochastic Lagrangian footprint calculations over a surface with an abrupt change of roughness height. Monte Carlo Methods and Applications, 9 (2), 167−188. DOI: 10.1515/156939603322663330.
3.1.
2003
Ceulemans, R.; Kowalski, A.S.; Berbigier, P.; Dolman, A.J.; Grelle, A.; Lindroth, A.; Moors, E.; Rannik, Ü.; Vesala, T. (2003). Coniferous forests (Scots and Maritime pine): carbon and water fluxes, balances, ecological and ecophysiological determinants. In: Valentini, R. (_EditorsAbbr). Fluxes of carbon, water and energy of European forests (71−98).. Berlin: Springer. (Ecological Studies; 163).
3.1.
2003
Falge, E.; Tenhunen, J.; Aubinet, M.; Bernhofer, C.; Clement, R.; Granier, A.; Kowalski, A.; Moors, E.; Pilegaard, K.; Rannik, Ü.; Rebmann, C. (2003). A Model-Based Study of Carbon Fluxes at Ten European Forest Sites. In: Valentini, R. (_EditorsAbbr). Fluxes of Carbon, Water and Energy of European Forests (151−177).. Springer. (Ecological Studies ; 163).
3.1.
2003
Aubinet, M.; Clement, R.; Elbers, J.A.; Foken, T.; Grelle, A.; Ibrom, A.; Moncrieff, J.; Pilegaard, K.; Rannik, Ü.; Rebmann, C. (2003). Methodology for Data Acquisition, Storage and Treatment. In: Valentini, R. (_EditorsAbbr). Fluxes of Carbon, Water and Energy of European Forests (9−36).. Springer. (Ecological Studies; 163).
9.06.2021

Üllar Rannik

https://www.etis.ee/CV/Üllar_Rannik/eng
5.10.1968
+372 53481663
ullar.rannik@heuristica.ee

Career

Institutions and positions
01.01.1998–...   
University of Helsinki, Faculty of Science, Department of Physics; Researcher
01.01.1995–31.12.1997   
University of Helsinki, Faculty of Science, Department of Physics; Assistant
 
 
Education
1994–1998   
University of Helsinki, Faculty of Science, PhD
1992–1994   
University of Tartu, Faculty of Physics and Chemistry, Department of Environmental Physics, Master in Physics
1987–1992   
University of Tartu, Faculty of Physics and Chemistry, Department of Physics, Geophysics
 
 
Additional information
Docent of the University of Helsinki since 2000.

Qualifications

Academic degrees
Üllar Rannik, Doctor's Degree, 1998, (sup) Timo Vesala; Markku Kulmala, Turbulent Atmosphere: Vertical Fluxes Above a Forest and Particle Growth, University of Helsinki.
Üllar Rannik, Research Master's Degree, 1994, (sup) Olavi Kärner, Pilvkatte mõjust lühilainelisele kiirgusväljale ja selle ajalisest muutlikkusest (On the influence of clouds on the short-wave radiation field and its temporal variability), University of Tartu, Faculty of Physics and Chemistry, Institute of Environmental Physics.
 
 
Honours & awards
2004, Üllar Rannik, Grant by Maj and Tor Nessling Foundation for the project "Dry deposition of aerosol particles into forests - measurements and modelling"
1998, Üllar Rannik, Award for Theoretical Work in Aerosol Science by Finnish Association for Aerosol Research
1995, Üllar Rannik, Grant for post-graduate studies by the Nordic Council of Ministers
 
 
Fields of research
ETIS CLASSIFICATION: 4. Natural Sciences and Engineering; 4.2. Geosciences; CERCS CLASSIFICATION: P500 Geophysics, physical oceanography, meteorology ; SPECIFICATION: Atmospheric Boundary Layer physics, micrometeorology, flux measurement techniques, dry deposition of particles and gases
 
 
Additional information
Referee for scientific journals (J. Aerosol Sci., J. Applied Meteorol., J. Atmos. Sci., J. Geophys. Res., Aerosol Sci. Technol., Agric. Forest Meteorol., Atmosfera, Atmos. Chem. Phys., Atmos. Environm., Biogeosci., Boreal Environm. Res., Boundary Layer Meteorol., Geoscientific Model Development, Tellus B, Environmental Science: Nano)
Opponent of Doctoral Dissertation “Data cycle in atmospheric physics: From detected millivolts to understanding the atmosphere” by Heikki Junninen, Faculty of Science, University of Helsinki (public defense held in January 14th, 2014)

Completed projects

Supervised dissertations

Publications

Category
Year
Publication
 
1.1.
2020
Rannik, Üllar; Vesala, Timo; Peltola, Olli; Novick, Kimberly A.; Aurela, Mika; Järvi, Leena; Montagnani, Leonardo; Mölder, Meelis; Peichl, Matthias; Pilegaard, Kim; Mammarella, Ivan (2020). Impact of coordinate rotation on eddy covariance fluxes at complex sites. Agricultural and Forest Meteorology, 287, 107940. DOI: 10.1016/j.agrformet.2020.107940.
1.1.
2018
Jarvi, Leena; Rannik, Ullar; Kokkonen, Tom, V; Kurppa, Mona; Karppinen, Ari; Kouznetsov, Rostislav D.; Rantala, Pekka; Vesala, Timo; Wood, Curtis R. (2018). Uncertainty of eddy covariance flux measurements over an urban area based on two towers. Atmospheric Measurement Techniques Discussions, 11 (10), 5421−5438. DOI: 10.5194/amt-11-5421-2018.
1.1.
2017
Zhou, P.; Ganzeveld, L.; Rannik, Ü.; Zhou, L.; Gierens, R.; Taipale, D.; Mammarella, I.; Boy, M. (2017). Simulating ozone dry deposition at a boreal forest with a multi-layer canopy deposition model. Atmospheric Chemistry and Physics, 17, 1361−1379.10.5194/acp-17-1361-2017.
1.1.
2017
Arriga, N., Rannik, Ü., Aubinet, M., Carrara, A., Vesala, T., and Papale, D. (2017). Experimental validation of footprint models for eddy covariance CO2 flux measurements above grassland by means of natural and artificial tracers. Agricultural and Forest Meteorology, 242, 75−84.10.1016/j.agrformet.2017.04.006.
1.1.
2017
Auvinen, M., Järvi, L., Hellsten, A., Rannik, Ü., and Vesala, T. (2017). Numerical Framework for the Computation of Urban Flux Footprints Employing Large-eddy Simulation and Lagrangian Stochastic Modeling. Geoscientific Model Development, 10, 4187−4205.10.5194/gmd-10-4187-2017.
1.1.
2017
Nöjd, P., Korpela, M., Hari, P., Rannik, Ü., Sulkava, M., Hollmén, J., Mäkinen, H. (2017). Effects of precipitation and temperature on the growth variation of Scots pine—A case study at two extreme sites in Finland. Dendrochronologia, 46, 35−45. DOI: 10.1016/j.dendro.2017.09.003.
1.1.
2017
Zhou, P., Ganzeveld, L., Taipale, D., Rannik, Ü., Rantala, P., Rissanen, M.P., Chen, D., and Boy, M. (2017). Boreal forest BVOC exchange: emissions versus in-canopy sinks. Atmospheric Chemistry and Physics, 17, 14309−14332.10.5194/acp-17-14309-2017.
1.1.
2016
Rannik, Ü.; Zhou, L.; Zhou, P.; Gierens, R.; Mammarella, I.; Sogachev, A.; Boy, M. (2016). Aerosol dynamics within and above forest in relation to turbulent transport and dry deposition. Atmospheric Chemistry and Physics, 16, 3145−3160.
1.1.
2016
Shurpali, N.J.; Rannik, Ü.; Jokinen, S.; Lind, S.; Biasi, C.; Mammarella, I.; Peltola, O.; Pihlatie, M.; Hyvönen, N.; Räty, M.; Haapanala, S.; Zahniser, M.; Virkajärvi, P.; Vesala, T.; Martikainen, P.J. (2016). Neglecting diurnal variations leads to uncertainties in terrestrial nitrous oxide emissions. Scientific Reports, 6 (25739), -−-.10.1038/srep25739.
1.1.
2016
Mammarella, I.; Peltola, O.; Nordbo, A.; Järvi, L.; and Rannik, Ü. (2016). Quantifying the uncertainty of eddy covariance fluxes due to the use of different software packages and combinations of processing steps in two contrasting ecosystems. Atmospheric Measurement Techniques Discussions, 9, 4915−4933. DOI: 10.5194/amt-9-4915-2016.
1.1.
2016
Pihlatie, M.; Rannik, Ü.; Haapanala, S.; Peltola, O.; Shurpali, N.; Martikainen, P. J.; Lind, S.; Hyvönen, N.; Virkajärvi, P.; Zahniser, M.; and Mammarella, I. (2016). Seasonal and diurnal variation in CO fluxes from an agricultural bioenergy crop. Biogeosciences, 13, 5471−5485.10.5194/bg-13-5471-2016.
1.1.
2016
Glazunov, A.; Rannik, Ü.; Stepanenko, V. M.; Lykosov, V. N.; Mammarella, I.; Auvinen, M.; Vesala, T. ; and Ivan Mammarella (2016). Large-eddy simulation and stochastic modeling of Lagrangian particles for footprint determination in the stable boundary layer. Geoscientific Model Development, 9, 2925−2949.10.5194/gmd-9-2925-2016.
1.1.
2016
Babkovskaia, N.; Rannik, Ü.; Phillips, V.; Siebert, H.; Wehner, B.; and Boy, M (2016). A DNS study of aerosol and small-scale cloud turbulence interaction. Atmospheric Chemistry and Physics, 16, 7889−7898.10.5194/acp-16-7889-2016.
1.1.
2016
Rannik, Ü.; Peltola, O.; and Mammarella, I. (2016). Random uncertainties of flux measurements by the eddy covariance technique. Atmospheric Measurement Techniques Discussions, 9, 5163−5181.10.5194/amt-9-5163-2016.
1.1.
2015
Lönnell, N.; Norros, V.; Sundberg, S.; Rannik, Ü.; Johansson, V.; Ovaskainen, O.; Hylander, K. (2015). Testing a mechanistic dispersal model against a dispersal experiment with a wind-dispersed moss. Oikos, 001−009.10.1111/oik.01886.
1.1.
2015
Rannik, Ü.; Haapanala, S.; Shurpali, N. J.; Mammarella, I.; Lind, S.; Hyvönen, N.; Peltola, O.; Zahniser, M.; Martikainen, P. J.; Vesala, T. (2015). Intercomparison of fast response commercial gas analysers for nitrous oxide flux measurements under field condition. Biogeosciences, 12, 415−432.10.5194/bg-12-415-2015.
1.1.
2015
Babkovskaia, N.; Boy, M.; Smolander, S.; Romakkaniemi, S.; Rannik, Ü.; Kulmala, M. (2015). A study of aerosol activation at the cloud edge with high resolution numerical simulations. Atmospheric Research, 153, 49−58. DOI: 10.1016/j.atmosres.2014.07.017.
1.1.
2015
Johansson, V.; Lönnell, N.; Rannik, Ü.; Sundberg, S.; Hylander, K. (2015). Air humidity thresholds trigger active moss spore release to extend dispersal in space and time. Functional Ecology, n/a− n/a.10.1111/1365-2435.12606.
1.1.
2015
Mammarella, I.; Nordbo, A.; Rannik, Ü.; Haapanala, S.; Levula, J.; Laakso, H.; Ojala, A.; Peltola, O.; Heiskanen, J.; Pumpanen, J.; Vesala, T. (2015). Eddy covariance measurements of carbon dioxide and energy fluxes over a small boreal lake in Southern Finland. Journal of Geophysical Research Biogeosciences, 120, 7, 1296−1314. DOI: 10.1002/2014JG002873.
1.1.
2014
Järvi, L.; Nordbo, A.; Rannik, Ü.; Haapanala, S.; Riikonen, A.; Mammarella, I.; Pihlatie, M.; Vesala, T. (2014). Urban nitrous oxide fluxes measured using the eddy-covariance technique in Helsinki, Finland. Boreal Environment Research, 19, 108−121.
1.1.
2014
Norros, V.; Rannik, Ü.; Hussein, T.; Petäjä, T.; Vesala, T.; Ovaskainen, O. (2014). Do small spores disperse further than large spores? Ecology, 95, 1612−1621.
1.1.
2013
Alekseychik, Pavel; Mammarella, Ivan; Launiainen, Samuli; Rannik, Üllar; Vesala, Timo (2013). Evolution of the nocturnal decoupled layer in the pine forest canopy. Agricultural and Forest Meteorology, 15−27.10.1016/j.agrformet.2013.01.011.
1.1.
2013
Wang, Kai; Zheng, Xunhua; Pihlatie, Mari; Vesala, Timo; Liu, Chunyan; Haapanala, Sami; Mammarella, Ivan; Rannik, Üllar; Liu, Huizhi (2013). Comparison between static chamber and tunable diode laser-based eddy covariance techniques for measuring nitrous oxide fluxes from a cotton field. Agricultural and Forest Meteorology, 171, 9−19.10.1016/j.agrformet.2012.11.009.
1.1.
2013
Hussein, Tareq; Norros, Veera; Hakala, Jani; Petäjä, Tuukka; Aalto, Pasi P.; Rannik, Üllar; Vesala, Timo; Ovaskainen, Otso (2013). Species Traits and Inertial Deposition of Fungal Spores. Journal of Aerosol Science, 1−32.10.1016/j.jaerosci.2013.03.004.
1.1.
2012
Rinne, J.; Markkanen, T.; Ruuskanen, T.M.; Petäjä, T.; Keronen, P.; Tang, M.J.; Crowley, J.N.; Rannik, Ü.; Vesala, T. (2012). Effect of chemical degradation on fluxes of reactive compounds –a study with a stochastic Lagrangian transport model. Atmospheric Chemistry and Physics, 12 (11), 4843−4854.10.5194/acp-12-4843-2012.
1.1.
2012
Rannik, Ü.; Altimir, N.; Mammarella, I.; Bäck, J.; Rinne, J.; Ruuskanen, T.M.; Hari, P.; Vesala, T.; Kulmala, M. (2012). Ozone deposition into a boreal forest over a decade of observations: evaluating deposition partitioning and driving variables. Atmospheric Chemistry and Physics, 12 (24), 12165−12182.10.5194/acp-12-12165-2012.
3.1.
2012
Rannik, Ü.; Sogachev, A.; Foken, T.; Göckede, M.; Kljun, N.; Leclerc, M.Y.; Vesala, T. (2012). Footprint Analysis. In: Aubinet, Marc; Vesala, Timo; Papale, Dario (Ed.). Eddy Covariance A Practical Guide to Measurement and Data Analysis (211−261). Springer. DOI: 10.1007/978-94-007-2351-1.
1.1.
2011
Lauros, J.; Sogachev, A.; Smolander, S.; Vuollekoski, H.; Sihto, S.-L.; Mammarella, I.; Laakso, L.; Rannik, Ü., Boy, M. (2011). Particle concentration and flux dynamics in the atmospheric boundary layer as the indicator of formation mechanism. Atmospheric Chemistry and Physics, 11 (12), 5591−5601.10.5194/acp-11-5591-2011.
1.1.
2010
Ilvesniemi, H.; Pumpanen, J.; Duursma, R.; Hari, P.; Keronen, P.; Kolari, P.; Kulmala, M.; Mammarella, I.; Nikinmaa, E.; Rannik, Ü.; Pohja, T.; Siivola, E.; Vesala, T. (2010). Water balance of a boreal scots pine forest. Boreal Environment Research, 15, 375−396.
1.1.
2010
Mammarella, I.; Werle, P.; Pihlatie, M.; Eugster, W.; Haapanala, S.; Kiese, R.; Markkanen, T.; Rannik, Ü.; Vesala, T. (2010). A case study of eddy covariance flux of N2O measured within forest ecosystems: quality control and flux error analysis. Biogeosciences, 7 (2), 427−440.10.5194/bg-7-427-2010.
1.1.
2009
Järvi, L.; Rannik, Ü.; Mammarella, I.; Sogachev, A.; Aalto, P.P.; Keronen, P.; Siivola, E.; Kulmala, M.; Vesala, T. (2009). Annual particle flux observations over a heterogeneous urban area. Atmospheric Chemistry and Physics, 9 (20), 7847−7856.
1.1.
2009
Mammarella, I.; Launiainen, S.; Gronholm, T.; Keronen, P.; Pumpanen, J.; Rannik, Ü.; Vesala, T. (2009). Relative Humidity Effect on the High-Frequency Attenuation of Water Vapor Flux Measured by a Closed-Path Eddy Covariance System. Journal of Atmospheric and Oceanic Technology, 26 (9), 1856−1866. DOI: 10.1175/2009JTECHA1179.1.
1.1.
2009
Rannik, Ü.; Mammarella, I.; Keronen, P.; Vesala, T. (2009). Vertical advection and nocturnal deposition of ozone over a boreal pine forest. Atmospheric Chemistry and Physics, 9 (6), 2089−2095.
1.1.
2009
Rannik, Ü.; Mammarella, I.; Aalto, P.; Keronen, P.; Vesala, T.; Kulmala, M. (2009). Long-term aerosol particle flux observations Part I: Uncertainties and time-average statistics. Atmospheric Environment, 43 (21), 3431−3439. DOI: 10.1016/j.atmosenv.2009.02.049.
1.1.
2008
Grönholm, T.; Haapanala, S.; Launiainen, S.; Rinne, J.; Vesala, T.; Rannik, Ü. (2008). The dependence of the beta coefficient of REA system with dynamic deadband on atmospheric conditions. Environmental Pollution, 152 (3), 597−603. DOI: 10.1016/j.envpol.2007.06.071.
1.1.
2008
Vesala, T.; Järvi, L.; Launiainen, S.; Sogachev, A.; Rannik, Ü.; Mammarella, I.; Siivola, E.; Keronen, P.; Rinne, J.; Riikonen, A.; Nikinmaa, E. (2008). Surface-atmosphere interactions over complex urban terrain in Helsinki, Finland. Tellus. Series B: Chemical and Physical Meteorology, 60 (2), 188−199. DOI: 10.1111/j.1600-0889.2007.00312.x.
1.1.
2008
Vesala, T.; Kljun, N.; Rannik, Ü.; Rinne, J.; Sogachev, A.; Markkanen, T.; Sabelfeld, K.; Foken, Th.; Leclerc, M.Y. (2008). Flux and concentration footprint modelling: State of the art. Environmental Pollution, 152 (3), 653−666. DOI: 10.1016/j.envpol.2007.06.070.
1.1.
2008
Sogachev, A.; Leclerc, M.Y.; Zhang, G.; Rannik, Ü.; Vesala, T. (2008). CO2 fluxes NEAR a forest edge: a numerical study. Ecological Applications, 18 (6), 1454−1469. DOI: 10.1890/06-1119.1.
1.1.
2008
Pryor, S.C.; Barthelmie, R.J.; Sørensen, L.L.; Larsen, S.E.; Sempreviva, A.M.; Grönholm, T.; Rannik, Ü.; Kulmala, M.; Vesala, T. (2008). Upward fluxes of particles over forests: when, where,why? Tellus. Series B: Chemical and Physical Meteorology, 60 (3), 372−380. DOI: 10.1111/j.1600-0889.2008.00341.x.
3.1.
2008
Rannik, Ü.; Vesala, T.; Sogacheva, L.; Hari, P. (2008). Environmental factors. Chapter 3. In: Hari, Pertti; Kulmala, Liisa (Ed.). Boreal Forest and Climate Change (57−74). Springer. (Advances in Global Change Research; 34). DOI: 10.1007/978-1-4020-8718-9_3.
3.1.
2008
Rannik, Ü.; Kolari, P.; Launiainen, S. (2008). Environmental Factors in the Canopy. Chapter 7.3. In: Hari, Pertti; Kulmala, Liisa (Ed.). Boreal Forest and Climate Change (298−305). Springer. (Advances in Global Change Research; 34).
1.1.
2007
Grönholm, T.; Aalto, P.P.; Hiltunen, V.; Rannik, Ü.; Rinne, J.; Laakso, L.; Hyvönen, S.; Vesala, T.; Kulmala, M. (2007). Measurements of aerosol particle dry deposition velocity using the relaxed eddy accumulation technique. Tellus. Series B: Chemical and Physical Meteorology, 59 (3), 381−386. DOI: 10.1111/j.1600-0889.2007.00268.x.
1.1.
2007
Pryor, S.C.; Larsen, S.E.; Sørensen, L.L.; Barthelmie, R.J.; Grönholm, T.; Kulmala, M.; Launiainen, S.; Rannik, Ü.; Vesala, T. (2007). Particle fluxes over forests: Analyses of flux methods and functional dependencies. Journal of Geophysical Research Atmospheres, 112, D07205. DOI: 10.1029/2006JD008066.
1.1.
2007
Launiainen, S.; Vesala, T.; Mölder, M.; Mammarella, I.; Smolander, S.; Rannik, Ü.; Kolari, P.; Hari, P.; Lindroth, A.; Katul, G.G. (2007). Vertical variability and effect of stability on turbulence characteristics down to the floor of a pine forest. Tellus. Series B: Chemical and Physical Meteorology, 59 (5), 919−936. DOI: 10.1111/j.1600-0889.2007.00313.x.
1.1.
2006
Vesala, T.; Huotari, J.; Rannik, Ü.; Suni, T.; Smolander, S.; Sogachev, A.; Ojala, A. (2006). Eddy covariance measurements of carbon exchange and latent and sensible heat fluxes over a boreal lake for a full open-water period. Journal of Geophysical Research Atmospheres, 111, D11101. DOI: 10.1029/2005JD006365.
1.1.
2006
Rannik, Ü.; Kolari, P.; Vesala, T.; Hari, P. (2006). Uncertainties in measurement and modelling of net ecosystem exchange of a forest. Agricultural and Forest Meteorology, 138, 244−257. DOI: 10.1016/j.agrformet.2006.05.007.
1.1.
2005
Rebmann, C.; Göckede, M.; Foken, T.; Aubinet, M.; Aurela, M.; Berbigier, P.; Bernhofer, C.; Buchmann, N.; Carrara, A.; Cescatti, A.; Ceulemans, R.; Clement, R.; Elbers, J.A.; Granier, A.; Grünwald, T.; Guyon, D.; Havránkova, K.; Heinesch, B.; Knohl, A.; Laurila, T. ... Yakir, D. (2005). Quality analysis applied on eddy covariance measurements at complex forest sites using footprint modelling. Theoretical and Applied Climatology, 80, 121−141. DOI: 10.1007/s00704-004-0095-y.
1.1.
2005
Geever, M.; O'Dowd, C.; van Ekeren, S.; Flanagan, R.; Nilsson, D.; de Leeuw, G.; Rannik, Ü. (2005). Submicron Sea Spray Fluxes. Geophysical Research Letters, 32 (15), L15810. DOI: 10.1029/2005GL023081.
1.1.
2005
Pihlatie, M.; Rinne, J.; Ambus, P.; Pilegaard, K.; Dorsey, J.R.; Rannik, U.; Markkanen, T.; Launiainen, S.; Vesala, T. (2005). Nitrous oxide emissions from a beech forest floor measured by eddy covariance and soil enclosure techniques. Biogeosciences, 2 (4), 377−387.
1.1.
2005
Vesala, T.; Suni, T.; Rannik, Ü.; Keronen, P.; Markkanen, T.; Sevanto, S.; Gronholm, T.; Smolander, S.; Kulmala, M.; Ilvesniemi, H.; Ojansuu, R.; Uotila, A.; Levula, J.; Makela, A.; Pumpanen, J.; Kolari, P.; Kulmala, L.; Altimir, N.; Berninger, F.; Nikinmaa, E. ... Hari, P. (2005). Effect of thinning on surface fluxes in a boreal forest. Global Biogeochemical Cycles, 19 (2), GB2001. DOI: 10.1029/2004GB002316.
1.1.
2005
Ilvesniemi, H.; Kähkönen, M.A.; Pumpanen, J.; Rannik, Ü.; Wittmann, C.; Perämäki, M.; Keronen, P.; Hari, P.; Vesala, T.; Salkinoja-Salonen, M. (2005). Wintertime CO2 evolution from a boreal forest ecosystem. Boreal Environment Research, 10 (5), 401−408.
1.1.
2004
Gaman, A.; Rannik, Ü.; Aalto, P.; Pohja, T.; Siivola, E.; Kulmala, M.; Vesala, T. (2004). Relaxed Eddy Accumulation System for Size-Resolved Aerosol Particle Flux Measurements. Journal of Atmospheric and Oceanic Technology, 21 (6), 933−943. DOI: 10.1175/1520-0426(2004)021<0933:REASFS>2.0.CO;2.
1.1.
2004
Boy, M.; Petäjä, T.; Dal Maso, M.; Rannik, Ü.; Rinne, J.; Aalto, P.; Laaksonen, A.; Vaattovaara, P.; Joutsensaari, J.; Hoffmann, T.; Warnke, J.; Apostolaki, M.; Stephanou, E.G.; Tsapakis, M.; Kouvarakis, A.; Pio, C.; Carvalho, A.; Römpp, A.; Moortgat, G.; Spirig, C. ... Kulmala, M. (2004). Overview of the field measurement campaign in Hyytiälä, August 2001 in the framework of the EU project OSOA. Atmospheric Chemistry and Physics, 4, 657−678.
1.1.
2004
Kulmala, M.; Suni, T.; Lehtinen, K.E.J.; Dal Maso, M.; Boy, M.; Reissell, A.; Rannik, Ü.; Aalto, P.; Keronen, P.; Hakola, H.; Bäck, J.; Hoffmann, T.; Vesala, T.; Hari, P. (2004). A New Feedback Mechanism Linking Forests, Aerosols, and Climate. Atmospheric Chemistry and Physics, 4, 557−562.
1.1.
2004
Kulmala, M.; Boy, M.; Suni, T.; Gaman, A.; Raivonen, M.; Aaltonen, V.; Adler, H.; Anttila, T.; Fiedler, V.; Grönholm, T.; Hellén, H.; Herrmann, E.; Jalonen, R.; Jussila, M.; Komppula, M.; Kosmale, M.; Plauskaite, K.; Reis, R.; Savola, N.; Soini, P. ... Hari, P. (2004). Aerosols in boreal forest: wintertime relations between formation events and bio-geo-chemical activity. Boreal Environment Research, 9 (1), 63−74.
1.1.
2004
Kolari, P.; Pumpanen, J.; Rannik, Ü.; Ilvesniemi, H.; Hari, P.; Berninger, F. (2004). Carbon balance of different aged Scots pine forests in Southern Finland. Global Change Biology, 10 (7), 1106−1119. DOI: 10.1111/j.1529-8817.2003.00797.x.
1.1.
2004
Kowalski, A.S.; Loustau, D.; Berbigier, P.; Manca, G.; Tedeschi, V.; Borghetti, M.; Valentini, R.; Kolari, P.; Berninger, F.; Rannik, Ü.; Hari, P.; Rayment, M.; Mencuccini, M.; Moncrieff, J.; Grace, J. (2004). Paired comparisons of carbon exchange between undisturbed and regenerating stands in four managed forests in Europe. Global Change Biology, 10 (10), 1707−1723. DOI: 10.1111/j.1365-2486.2004.00846.x.
1.1.
2004
Vehkamäki, H.; Dal Maso, M.; Hussein, T.; Flanagan, R.; Hyvärinen, A.; Lauros, J.; Merikanto, J.; Mönkkönen, P.; Pihlatie, M.; Salminen, K.; Sogacheva, L.; Thum, L.; Ruuskanen, T.; Keronen, P.; Aalto, P.P.; Hari, P.; Lehtinen, K.E.J.; Rannik, Ü.; Kulmala, M. (2004). Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998 – 2002. Atmospheric Chemistry and Physics, 4, 2015−2023.
1.1.
2004
Sogachev, A.; Rannik, U.; Vesala, T. (2004). Flux footprints over complex terrain covered by heterogeneous forest. Agricultural and Forest Meteorology, 127, 143−158. DOI: 10.1016/j.agrformet.2004.07.010.
1.1.
2004
Vesala, T.; Rannik, Ü.; Leclerc, M.; Foken, T.; Sabelfeld, K. (2004). Flux and concentration footprints. Agricultural and Forest Meteorology, 127, 111−116. DOI: 10.1016/j.agrformet.2004.07.007.
1.1.
2004
Rannik, Ü.; Keronen, P.; Hari, P.; Vesala, T. (2004). Estimation of forest-atmosphere CO2 exchange by eddy covariance and profile techniques. Agricultural and Forest Meteorology, 126, 141−155. DOI: 10.1016/j.agrformet.2004.06.010.
1.1.
2004
Lehtinen, K.E.J.; Rannik, Ü.; Petäjä, T.; Kulmala, M.; Hari, P. (2004). Nucleation rate and vapor concentration estimations using a least squares aerosol dynamics method. Journal of Geophysical Research Atmospheres, 109, D21209. DOI: 10.1029/2004JD004893.
1.2.
2004
Petäjä, T.; Lehtinen, K.E.J.; Rannik, Ü.; Kulmala, M. (2004). Condensable vapour concentrations and aerosol formation rates in toluene oxidation experiments using a least-squares aerosol dynamics model. Journal of Aerosol Science, 35 (1), 355−368. DOI: 10.1016/j.jaerosci.2004.06.073.
1.1.
2003
Churkina, G.; Tenhunen, J.; Thornton, P.; Falge, E.M.; Elbers, J.A.; Erhard, M.; Grünwald, T.; Kowalski, A.S.; Rannik, Ü.; Sprinz, D.F. (2003). Analyzing the ecosystem carbon dynamics of four European coniferous forests using a biogeochemistry model. Ecosystems, 6 (2), 168−184. DOI: 10.1007/s10021-002-0197-2.
1.1.
2003
Buzorius, G.; Rannik, Ü.; Nilsson, E.D.; Vesala, T.; Kulmala, M. (2003). Analysis of measurement techniques to determine dry deposition velocities of aerosols with diameters less than 100 nm. Journal of Aerosol Science, 34 (6), 747−764. DOI: 10.1016/S0021-8502(03)00025-9.
1.1.
2003
Markkanen, T.; Rannik, Ü.; Marcolla, B.; Cescatti, A.; Vesala, T. (2003). Footprints and fetches for fluxes over forest canopies with varying structure and density. Boundary-Layer Meteorology, 437−459. DOI: 10.1023/A:1021261606719.
1.1.
2003
Rannik, Ü.; Markkanen, T.; Raittila, J.; Hari, P.; Vesala, T. (2003). Turbulence statistics inside and over forest: influence on footprint prediction. Boundary-Layer Meteorology, 109 (2), 163−189. DOI: 10.1023/A:1025404923169.
1.1.
2003
Laakso, L.; Grönholm, T.; Rannik, Ü.; Kosmale, M.; Fiedler, V.; Vehkamäki, H.; Kulmala, M. (2003). Ultrafine particle scavenging coefficients calculated from 6 years field measurements. Atmospheric Environment, 37 (25), 3605−3613. DOI: 10.1016/S1352-2310(03)00326-1.
1.1.
2003
Keronen, P.; Reissell, A.; Rannik, Ü.; Pohja, T.; Siivola, E.; Hiltunen, V.; Hari, P.; Kulmala, M.; Vesala, T. (2003). Ozone flux measurements over a Scots pine forest using eddy covariance method: performance evaluation and comparison with flux-profile method. Boreal Environment Research, 8 (4), 425−443.
1.1.
2003
Suni, T.; Rinne, J.; Reissell, A.; Altimir, N.; Keronen, P.; Rannik, Ü.; Dal Maso, M.; Kulmala, M.; Vesala, T. (2003). Long-term measurements of surface fluxes above a Scots pine forest in Hyytiälä, Southern Finland, 1996 – 2001. Boreal Environment Research, 8 (4), 287−301.
1.1.
2003
Suni, T.; Berninger, F.; Markkanen, T.; Keronen, P., Rannik, Ü.; Vesala, T. (2003). Interannual variability and timing of growing-season CO2 exchange in a boreal forest. Journal of Geophysical Research Atmospheres, 108, No 4265. DOI: 10.1029/2002JD002381.
1.1.
2003
Buzorius, G.; Rannik, Ü.; Aalto, P.; dal Maso, M.; Nilsson, E.D.; Lehtinen, K.E.J.; Kulmala, M. (2003). On particle formation prediction in continental boreal forest using micrometeorological parameters. Journal of Geophysical Research Atmospheres, 108, No 4377. DOI: 10.1029/2002JD002850.
1.1.
2003
Rannik, Ü.; Aalto, P.; Keronen, P.; Vesala, T.; Kulmala, M. (2003). Interpretation of aerosol particle fluxes over a pine forest: Dry deposition and random errors. Journal of Geophysical Research Atmospheres, 108, No 4544. DOI: 10.1029/2003JD003542.
1.1.
2003
Boy, M.; Rannik, Ü.; Lehtinen, K.E.J.; Tarvainen, V.; Hakola, H.; Kulmala, M. (2003). Nucleation events in the cointinental boundary layer: Long-term statistical analyses of aerosol relevant characteristics. Journal of Geophysical Research Atmospheres, 108, No 4667. DOI: 10.1029/2003JD003838.
1.2.
2003
Kurbanmuradov, O.; Levykin, A.I.; Rannik, Ü.; Sabelfeld, K.; Vesala, T. (2003). Stochastic Lagrangian footprint calculations over a surface with an abrupt change of roughness height. Monte Carlo Methods and Applications, 9 (2), 167−188. DOI: 10.1515/156939603322663330.
3.1.
2003
Ceulemans, R.; Kowalski, A.S.; Berbigier, P.; Dolman, A.J.; Grelle, A.; Lindroth, A.; Moors, E.; Rannik, Ü.; Vesala, T. (2003). Coniferous forests (Scots and Maritime pine): carbon and water fluxes, balances, ecological and ecophysiological determinants. In: Valentini, R. (_EditorsAbbr). Fluxes of carbon, water and energy of European forests (71−98).. Berlin: Springer. (Ecological Studies; 163).
3.1.
2003
Falge, E.; Tenhunen, J.; Aubinet, M.; Bernhofer, C.; Clement, R.; Granier, A.; Kowalski, A.; Moors, E.; Pilegaard, K.; Rannik, Ü.; Rebmann, C. (2003). A Model-Based Study of Carbon Fluxes at Ten European Forest Sites. In: Valentini, R. (_EditorsAbbr). Fluxes of Carbon, Water and Energy of European Forests (151−177).. Springer. (Ecological Studies ; 163).
3.1.
2003
Aubinet, M.; Clement, R.; Elbers, J.A.; Foken, T.; Grelle, A.; Ibrom, A.; Moncrieff, J.; Pilegaard, K.; Rannik, Ü.; Rebmann, C. (2003). Methodology for Data Acquisition, Storage and Treatment. In: Valentini, R. (_EditorsAbbr). Fluxes of Carbon, Water and Energy of European Forests (9−36).. Springer. (Ecological Studies; 163).
9.06.2021

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IUTIUT20-11Nanoosakesed õhus ja nende osa meteoroloogilistes protsessides01.01.201431.12.2019Urmas HõrrakTartu Ülikool, Loodus- ja täppisteaduste valdkond, füüsika instituut1 013 400,00 EUR