Searched for: author%3A%22Kroon%2C+P.S.%22
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Moors, E.J. (author), Dolman, H. (author), Elbers, J. (author), Hensen, A. (author), Duyzer, J.H. (author), Kroon, P.S. (author), Veenendaal, E.M. (author), van Huissteden, J. (author), Bosveld, F. (author), Jacobs, C. (author), Jans, W. (author), Kuikman, P. (author), Nol, L. (author), van Beek, C. (author)
report 2012
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Stolk, P.C. (author), Hendriks, R.F.A. (author), Jacobs, C.M.J. (author), Duyzer, J.H. (author), Moors, E.J. (author), van Groenigen, J.W. (author), Kroon, P.S. (author), Schrier-Uijl, A.P. (author), Veenendaal, E.M. (author), Kabat, P. (author)
Simulation of emissions of the greenhouse gas N2O from agricultural land is still a challenge. This is mainly due to its high temporal variability, with low background emissions and a few transient peaks. In this study, a first attempt was made to simulate observations of N2O fluxes with a daily time step from managed peat soils. We used a new...
article 2011
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Kroon, P.S. (author)
Atmospheric greenhouse gas concentrations have been increased significantly by human activities since the pre-industrial era which causes an enhanced global warming of the Earth. If measures are to be taken to globally decrease these concentrations and the related temperature increase, a part of these measures can be related to our ecosystems...
bookPart 2010
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Kroon, P.S. (author), Schrier, A.P. (author), Veenendaal, E.M. (author), Leffelaar, P.A. (author), Berendse, F. (author), va. Huissteden, J. (author)
Methane (CH4) emissions were compared for an intensively and extensively managed agricultural area on peat soils in the Netherlands to evaluate the effect of reduced management on the CH4 balance. Chamber measurements (photoacoustic methods) for CH4 were performed for a period of three years in the contributing landscape elements in the research...
article 2010
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Hensen, A. (author), Kroon, P.S. (author), Schrier, A.P. (author), Jonker, H. (author), Veenendaal, E.M. (author)
Annual terrestrial balances of methane (CH4) and nitrous oxide (N2O) are presented for a managed fen meadow in the Netherlands for 2006, 2007 and 2008, using eddy covariance (EC) flux measurements. Annual emissions derived from different methods are compared. The most accurate annual CH4 flux is achieved by gap filling EC fluxes with an...
article 2010
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Kroon, P.S. (author), Veenendaal, E.M. (author), van Huissteden, J. (author), Kwakernaak, C. (author), van de. Akker, J.J.H. (author)
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article 2010
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Energieonderzoek Centrum Nederland (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author)
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article 2010
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Hensen, A. (author), Kroon, P.S. (author), Schrier, A.P. (author), Veenendaal, E.M. (author), Leffelaar, P.A. (author), Berendse, F. (author)
Fluxes of methane (CH4) and carbon dioxide (CO2) estimated by empirical models based on small-scale chamber measurements were compared to large-scale eddy covariance (EC) measurements for CH4 and to a combination of EC measurements and EC-based models for CO2. The experimental area was a flat peat meadow in the Netherlands with heterogeneous...
article 2010
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Hensen, A. (author), Kroon, P.S. (author), Veenendaal, E.M. (author), Duyzer, J.H. (author), Dolman, A.J. (author), van Huissteden, J. (author), Elbers, J.A. (author), van Beek, C.L. (author), Mosquera, J. (author)
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article 2010
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Hensen, A. (author), Kroon, P.S. (author), Schrier, A.P. (author), Veenendaal, E.M. (author), Stolk, P.C. (author), van Evert, F.K. (author), Kuikman, P.J. (author)
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article 2010
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Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author), Bosveld, F.C. (author), Schuitmaker, A. (author), Tummers, M.J. (author)
Eddy covariance (EC) technique is often used to determine greenhouse gas exchange at the earth’s surface. In general, the instruments involved have a limited high frequency response which reduces the ability to detect the contribution to the flux of small eddies and in addition sensor separation gives high frequency losses. These missing...
article 2010
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Vermeulen, A.T. (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author), Bosveld, F.C. (author), Ouwersloot, H.G. (author)
The uncertainty in eddy covariance (EC) flux measurements is assessed for CH4 and N2O using data measured at a dairy farm site in the Netherlands in 2006 and 2007. An overview is given of the contributing uncertainties and theirmagnitude. The relative and absolute uncertainty of a 30 min EC flux are estimated for CH4 and N2O using N = 2185 EC...
article 2010
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Kroon, P.S. (author), Bosveld, F.C. (author), d. Roode, S.R. (author)
Observations collected between 2000 and 2008 at the Cabauw meteorological measurement platform in the Netherlands were conditionally sampled to select nights with stably stratified atmospheric conditions, clear skies and weak horizontal wind speeds (<3ms-1). For these conditions the eddy-correlation latent heat fluxes are found to be...
article 2010
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Kroon, P.S. (author), Vesala, T. (author), Grace, J. (author)
This special issue is the result of a workshop about eddy covariance (EC) flux measurements of CH4 and N2O held at the Hyytia??la?? Forestry Field station in Finland in April 2008 in relation to NitroEurope IP and ICOS (Integrated Carbon Observation System) ESFRI preparatory phase project.
article 2010
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Energieonderzoek Centrum Nederland (author), Hensen, A. (author), Kroon, P.S. (author)
Closed (non-steady state) chamber measurements are often used to determine the gas exchange of N2O. Many researchers have addressed the underestimation of the emission estimates obtained from closed chamber measurements when using linear regression methods. Several theoretical models are given in the literature, which are all based on different...
conference paper 2009
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Energieonderzoek Centrum Nederland (author), Kroon, P.S. (author), Schrier, A.P. (author), Hendriks, D.M.D. (author), Veenendaal, E.M. (author), Leffelaar, P.A. (author), Berendse, F. (author)
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conference paper 2009
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Energieonderzoek Centrum Nederland (author), Hensen, A. (author), Kroon, P.S. (author), Schrier, A.P. (author), Jonker, H. (author), Bosveld, F.C. (author), Tummers, M.J. (author)
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conference paper 2009
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Hensen, A. (author), Kroon, P.S. (author), Schrier, A.P. (author), Veenendaal, E.M. (author)
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public lecture 2009
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Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author)
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public lecture 2009
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van `t Veen, W.H. (author), Vermeulen, A.T. (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author), Bosveld, F.C. (author), Ouwersloot, H.G. (author)
The overall uncertainty in annual flux estimates derived from chamber measurements may be as high as 50% due to the temporal and spatial variability in the fluxes (Flechard et al., 2005). As even a large number of chamber plots still cover typically less than 1% of the total field area, the field-scale integrated emission necessarily remains a...
public lecture 2009
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