Searched for: author%3A%22Jonker%2C+H.%22
(1 - 19 of 19)
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Jonker, H. (author), Niessink, R.J.M. (author)
report 2022
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Schepers, J.G. (author), van Dorp, P. (author), Verzijlbergh, R. (author), Baas, P. (author), Jonker, H. (author)
This article describes a study in which the loads are assessed as calculated on a 10 MW wind turbine in response to extreme wind events on the North Sea. The turbine on which the loads are calculated is the 10 MW Reference Wind Turbine as designed in the EU project AVATAR (Sieros, et al., January 2015). The study is carried out within the Dutch...
article 2020
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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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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), 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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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), 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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Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author)
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public lecture 2009
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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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public lecture 2009
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Kroon, P.S. (author), Jonker, H. (author), Schuitmaker, A. (author), Tummers, M.J. (author)
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conference paper 2008
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Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author), Ouwersloot, H.G. (author)
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public lecture 2008
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van `t Veen, W.H. (author), Vermeulen, A.T. (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author)
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public lecture 2008
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van `t Veen, W.H. (author), Vermeulen, A.T. (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author)
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public lecture 2007
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Vermeulen, A.T. (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author)
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public lecture 2007
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ten Brink, H.M. (author), Vilà-Guerau de Arellano, J. (author), Jonker, H. (author), Pino, D. (author), Chaumerliac, N. (author), Faloona, I. (author), Galmarini, S. (author), Millán, M. (author), Stutz, J. (author)
The importance of atmospheric boundary layer (ABL) dynamics and physics in controlling key aspects of atmospheric chemistry is becoming increasingly recognized. Processes such as dispersion, mixing, transformation, and deposition are strongly dependent on the stratification of the ABL, on the presence of clouds, and on the interaction between...
conference paper 2007
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van `t Veen, W.H. (author), Vermeulen, A.T. (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author), Zahniser, M.S. (author)
A quantum cascade laser spectrometer was evaluated for eddy covariance flux measurements of CH4 and N2O using three months of continuous measurements at a field site. The required criteria for eddy covariance flux measurements including continuity, sampling frequency, precision and stationarity were examined. The system operated continuously at...
article 2007
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Thielen, L. (author), Hanjalić, K. (author), Jonker, H. (author), Manceau, R. (author), Technisch Physische Dienst TNO - TH (author)
We present numerical computations of flow and heat transfer in multiple jets impinging normally on a flat heated surface, obtained with a new second-moment turbulence closure combined with an elliptic blending model of non-viscous wall blocking effect. This model provides the mean velocity and turbulent stress fields in very good agreement with...
article 2005
Searched for: author%3A%22Jonker%2C+H.%22
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