Janne Rinne
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View article: BVOC and speciated monoterpene concentrations and fluxes at a Scandinavian boreal forest
BVOC and speciated monoterpene concentrations and fluxes at a Scandinavian boreal forest Open
Boreal forests emit terpenoid biogenic volatile organic compounds (BVOCs) that significantly affect atmospheric chemistry. Our understanding of the variation of BVOC species emitted from boreal ecosystems is based on relatively few dataset…
View article: Boreal Rivers as Sources of Terpenoid Emissions
Boreal Rivers as Sources of Terpenoid Emissions Open
Streams and rivers are biogeochemical hotspots that contribute substantially to inland water CO 2 emissions. However, their role as sources of biogenic volatile organic compounds (BVOCs) remains poorly understood. We quantified terpenoid e…
View article: Year‐Round δ <sup>13</sup> C‐CH <sub>4</sub> Reveals Seasonal Transition in Methane‐Related Processes in a Boreal Mire
Year‐Round δ <sup>13</sup> C‐CH <sub>4</sub> Reveals Seasonal Transition in Methane‐Related Processes in a Boreal Mire Open
While boreal mires are known to be a significant natural source of methane (CH 4 ), the seasonality of the related processes and their controls are still poorly understood. Here we aim to characterize CH 4 production, oxidation and transpo…
View article: Assimilating multi-site eddy-covariance data to calibrate the wetland CH <sub>4</sub> emission module in a terrestrial ecosystem model
Assimilating multi-site eddy-covariance data to calibrate the wetland CH <sub>4</sub> emission module in a terrestrial ecosystem model Open
In this study, we use a data assimilation framework based on the adaptive Markov chain Monte Carlo (MCMC) algorithm to constrain process parameters in LPJ-GUESS model using CH4 eddy-covariance flux observations from 14 different natural bo…
View article: Are natural mires warming or cooling Earth’s climate? - A perspective by the new ACME metric
Are natural mires warming or cooling Earth’s climate? - A perspective by the new ACME metric Open
Introduction Mire ecosystems, i.e. peat forming wetlands, have sequestered carbon dioxide (CO 2 ) from the atmosphere for millenia accumulating its carbon (C) into thick peat deposits. This has created a negative perturbation to the atmosp…
View article: Environmental impacts of peat extraction site rewetting – Establishing of new intensive monitoring site
Environmental impacts of peat extraction site rewetting – Establishing of new intensive monitoring site Open
Peat extraction and use of peat resources for energy purposes are ending in Finland as part of societal green transition and energy production shift. Former peat extraction areas are often restored by rewetting, but short- and long-term im…
View article: IRISCC: Fostering multi- and interdisciplinary research through integrated services for climate risk research
IRISCC: Fostering multi- and interdisciplinary research through integrated services for climate risk research Open
Introduction The IRISCC ( Integrated Research Infrastructure Services for Climate Change risks, www.iriscc.eu ) project delivers scientific and knowledge-based services aimed to support society’s capacity to address and strengthen resilien…
View article: A practical metric for estimating the current climate forcing of natural mires
A practical metric for estimating the current climate forcing of natural mires Open
Commensuration of the radiative effects of different greenhouse gases (GHGs) is crucial for understanding the effects of land cover and ecosystem changes on the global climate. However, none of the current commensuration approaches are sui…
View article: BVOC fluxes and concentrations at a boreal forest site in Sweden: an overview of long-term observations at ICOS Norunda and the impacts of forest clear-cutting on BVOC emissions
BVOC fluxes and concentrations at a boreal forest site in Sweden: an overview of long-term observations at ICOS Norunda and the impacts of forest clear-cutting on BVOC emissions Open
Vegetation is the major source of volatile organic compounds (VOCs) in the atmosphere, which affect both air quality and climate. Long-term ecosystem-level data on biogenic VOC (BVOC) emissions, however, are limited. This limits assessment…
View article: Multi-year GHG flux measurements from grasslands on boreal mineral and drained organic soils
Multi-year GHG flux measurements from grasslands on boreal mineral and drained organic soils Open
Managed grasslands are valuable from the viewpoint of the various ecosystem services they provide. They not only provide nutritious feed for the dairy cows and benefit a fertile soil but are also considered to have the potential to play a …
View article: IRISCC: Advancing Environmental Science through Integrated Services for Climate Change Risks
IRISCC: Advancing Environmental Science through Integrated Services for Climate Change Risks Open
The IRISCC (Integrated Research Infrastructure Services for Climate Change risks, www.iriscc.eu) project delivers scientific and knowledge-based services aimed to support society’s capacity to address and strengthen resilience to cli…
View article: A novel metric for estimating the climatic effect of natural mire ecosystems
A novel metric for estimating the climatic effect of natural mire ecosystems Open
Mire ecosystems, i.e. peat forming wetlands, have sequestered carbon (C) from the atmosphere for millennia, storing it in peat and thus creating a negative perturbation on the atmospheric carbon dioxide CO2 content. At the same time the mi…
View article: Equilibrium unveiled: Carbon fluxes of a natural Fennoscandian river
Equilibrium unveiled: Carbon fluxes of a natural Fennoscandian river Open
According to recent data-driven upscaling, emissions from rivers in the Arctic-boreal region offset between half to all of the wetland carbon dioxide (CO2) sink, and release substantial amounts of methane (CH4) despite their much smaller s…
View article: A practical metric for estimating the current climate forcing of natural mires
A practical metric for estimating the current climate forcing of natural mires Open
Commensuration of the radiative effects of different greenhouse gases (GHGs) is crucial for understanding the effects of land cover and ecosystem changes on the global climate. However, none of the current commensuration approaches are sui…
View article: Rewetting drained boreal peatland forests does not mitigate climate warming in the 21st century
Rewetting drained boreal peatland forests does not mitigate climate warming in the 21st century Open
Rewetting of drained peatland forests restores ecosystem functions and improves peatland ecological status. It is also considered to mitigate climate change, yet some studies challenge this view Recently, Laine et al. (2024, Restoration Ec…
View article: Eddy covariance measurements of CO2 and sensible and latent heat fluxes during a full year in a boreal pine forest trunk-space
Eddy covariance measurements of CO2 and sensible and latent heat fluxes during a full year in a boreal pine forest trunk-space Open
The eddy covariance method was used to determine turbulent heat fluxes and CO2 flux below a boreal Scots pine canopy 3 m above the forest floor. Data were filtered using standard deviation of the vertical velocity as a measure of the turbu…
View article: Integrated land ecosystem–atmosphere processes study (iLEAPS) assessment of global observational networks
Integrated land ecosystem–atmosphere processes study (iLEAPS) assessment of global observational networks Open
Long-term, continuous observations are needed for Earth system investigations and evaluation of simulations. The atmospheric and ecological communities have independently established field sites that have been running for many decades and …
View article: On-line PTR-MS measurements of atmospheric concentrations of volatile organic compounds in a European boreal forest ecosystem
On-line PTR-MS measurements of atmospheric concentrations of volatile organic compounds in a European boreal forest ecosystem Open
On-line measurements of atmospheric VOC concentrations in the European boreal zone with a proton transfer reaction mass spectrometer were conducted at SMEAR II station in Hyytiälä, south-western Finland on 2–22 July 2004. The measurements …
View article: Finnish Centre of Excellence in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change : summary and outlook
Finnish Centre of Excellence in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change : summary and outlook Open
markku Kulmala1)*, hanna K. lappalainen1)2), Jaana Back1)3), ari laaksonen2)4), eero nikinmaa3), marja-liisa riekkola5), timo vesala1), Yrjo viisanen2), tuula aalto2), michael Boy1), miikka Dal maso6), mikael ehn1), hannele hakola2), Pertt…
View article: Monoterpene pollution episodes in a forest environment : indication of anthropogenic origin and association with aerosol particles
Monoterpene pollution episodes in a forest environment : indication of anthropogenic origin and association with aerosol particles Open
We used a monoterpene volume mixing ratio dataset measured from 12 June 2006 to 24 September 2007 and from 1 June 2008 to 3 March 2009 at the SMEAR II station to quantify the magnitude of anthropogenic monoterpene emissions aside from biog…
View article: On-line field measurements of monoterpene emissions from Scots pine by proton-transfer-reaction mass spectrometry
On-line field measurements of monoterpene emissions from Scots pine by proton-transfer-reaction mass spectrometry Open
We measured the daily patterns of monoterpene emissions from Scots pine (Pinus sylvestris) trees in a boreal coniferous forest in August and September 2004, using an on-line chamber method combined with a proton-transfer-reaction mass spec…
View article: Variation of the VOC emission rates of birch species during the growing season
Variation of the VOC emission rates of birch species during the growing season Open
The VOC emission rates of 16 Betula pubescens and 15 Betula pendula trees were measured during the 1997 growing season in southern Finland. Since the monoterpene emission rates of Betula pubescens showed large variations between the tree s…