J
Jouni Heiskanen
Researcher at University of Helsinki
Publications - 22
Citations - 529
Jouni Heiskanen is an academic researcher from University of Helsinki. The author has contributed to research in topics: Eddy covariance & Greenhouse gas. The author has an hindex of 8, co-authored 21 publications receiving 385 citations. Previous affiliations of Jouni Heiskanen include Icos.
Papers
More filters
Journal ArticleDOI
Effects of cooling and internal wave motions on gas transfer coefficients in a boreal lake
Jouni Heiskanen,Ivan Mammarella,Sami Haapanala,Jukka Pumpanen,Timo Vesala,Sally Macintyre,Anne Ojala +6 more
TL;DR: In this paper, a boundary-layer approach that included wind shear and cooling was used to estimate k 600, a gas transfer coefficient that measures the difference in concentration across the diffusive boundary layer at the air-water interface.
Journal ArticleDOI
Methane and carbon dioxide fluxes over a lake: comparison between eddy covariance, floating chambers and boundary layer method
Kukka-Maaria Erkkilä,Anne Ojala,David Bastviken,Tobias Biermann,Jouni Heiskanen,Anders Lindroth,Olli Peltola,Miitta Rantakari,Timo Vesala,Ivan Mammarella +9 more
TL;DR: In this paper, the boundary layer method (BLM) was used to estimate the flux of CO 2 and CH 4 at Lake Kuivajarvi in Finland, and the results showed that BLM fluxes were mainly lower than EC, with the more recent model kTE giving the best fit with EC fluxes.
Journal ArticleDOI
Effects of water clarity on lake stratification and lake‐atmosphere heat exchange
Jouni Heiskanen,Ivan Mammarella,Anne Ojala,Victor Stepanenko,Kukka-Maaria Erkkilä,Heli Miettinen,Heidi Sandström,Werner Eugster,Matti Leppäranta,Heikki Järvinen,Timo Vesala,Annika Nordbo +11 more
TL;DR: In this paper, the authors used direct eddy covariance fluxes and basic meteorological measurements coupled with lake water temperature and clarity measurements from a boreal lake to estimate the performance of two lake models, LAKE and FLake.
Journal ArticleDOI
Carbon dioxide and energy fluxes over a small boreal lake in Southern Finland
Ivan Mammarella,Annika Nordbo,Üllar Rannik,Sami Haapanala,Janne Levula,Heikki Laakso,Anne Ojala,Olli Peltola,Jouni Heiskanen,Jukka Pumpanen,Timo Vesala +10 more
TL;DR: In this article, the authors investigated the dynamics of carbon dioxide and energy exchange over a small boreal lake and found that during period of high wind speed (>3m/m/s−1) shear-induced water turbulence controls the water-air gas transfer efficiency.
Journal ArticleDOI
Towards long-term standardised carbon and greenhouse gas observations for monitoring Europe's terrestrial ecosystems: a review
Daniela Franz,Manuel Acosta,Nuria Altimir,Nicola Arriga,Dominique Arrouays,Marc Aubinet,Mika Aurela,Edward Ayres,Ana López-Ballesteros,Mireille Barbaste,Daniel Berveiller,Sébastien C. Biraud,Hakima Boukir,Timothy Brown,Christian Brümmer,Nina Buchmann,George Burba,Arnaud Carrara,A. Cescatti,Eric Ceschia,Robert Clement,Edoardo Cremonese,Patrick M. Crill,Eva Darenova,Sigrid Dengel,Petra D'Odorico,Gianluca Filippa,Stefan Fleck,Gerardo Fratini,Roland Fuß,Bert Gielen,Sébastien Gogo,John Grace,Alexander Graf,Achim Grelle,Patrick Gross,Thomas Grünwald,Sami Haapanala,Markus Hehn,Bernard Heinesch,Jouni Heiskanen,Mathias Herbst,Christine Herschlein,Lukas Hörtnagl,Koen Hufkens,Andreas Ibrom,Claudy Jolivet,Lilian Joly,Michael P. Jones,Ralf Kiese,Leif Klemedtsson,Natascha Kljun,Katja Klumpp,Pasi Kolari,Olaf Kolle,Andrew S. Kowalski,Werner L. Kutsch,Tuomas Laurila,Anne De Ligne,Sune Linder,Anders Lindroth,Annalea Lohila,B. Longdoz,Ivan Mammarella,Tanguy Manise,Sara Maraňón Jiménez,Giorgio Matteucci,Matthias Mauder,Philip Meier,Lutz Merbold,Simone Mereu,Stefan Metzger,Mirco Migliavacca,Meelis Mölder,Leonardo Montagnani,Christine Moureaux,David R. Nelson,Eiko Nemitz,Giacomo Nicolini,Mats Nilsson,Maarten Op de Beeck,Bruce Osborne,Mikaell Ottosson Löfvenius,Marian Pavelka,Matthias Peichl,Olli Peltola,Mari Pihlatie,Andrea Pitacco,Radek Pokorný,Jukka Pumpanen,Céline Ratié,Corinna Rebmann,Marilyn Roland,Simone Sabbatini,Nicolas Saby,Matthew Saunders,Hans Peter Schmid,Marion Schrumpf,Pavel Sedlák,Penélope Serrano Ortiz,Lukas Siebicke,Ladislav Šigut,Hanna Silvennoinen,Guillaume Simioni,Ute Skiba,Oliver Sonnentag,Kamel Soudani,Patrice Soulé,Rainer Steinbrecher,Tiphaine Tallec,Anne Thimonier,Eeva-Stiina Tuittila,Juha-Pekka Tuovinen,Patrik Vestin,Gaëlle Vincent,Caroline Vincke,Domenico Vitale,Peter Waldner,Per Weslien,Lisa Wingate,Georg Wohlfahrt,Mark S. Zahniser,Timo Vesala +122 more
TL;DR: The pan-European Integrated Carbon Observation System combines carbon and greenhouse gas (GHG; CO2, CH4, N2O, H2O) observations within the atmosphere, terrestrial ecosystems and oceans.