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Twigg, M.M. (author), Berkhout, A.J.C. (author), Cowan, N. (author), Crunaire, S. (author), Dammers, E. (author), Ebert, V. (author), Gaudion, V. (author), Haaima, M. (author), Häni, C. (author), John, L. (author), Jones, M.R. (author), Kamps, B. (author), Kentisbeer, J. (author), Kupper, T. (author), Leeson, S.R. (author), Leuenberger, D. (author), Lüttschwager, N.O.B. (author), Makkonen, U. (author), Martin, N.A. (author), Missler, D. (author), Mounsor, D. (author), Neftel, A. (author), Nelson, C. (author), Nemitz, E. (author), Oudwater, R. (author), Pascale, C. (author), Petit, J.E. (author), Pogany, A. (author), Redon, N. (author), Sintermann, J. (author), Stephens, A. (author), Sutton, M.A. (author), Tang, Y.S. (author), Zijlmans, R. (author), Braban, C.F. (author), Niederhauser, B. (author)Ammonia (NH3) in the atmosphere affects both the environment and human health. It is therefore increasingly recognised by policy makers as an important air pollutant that needs to be mitigated, though it still remains unregulated in many countries. In order to understand the effectiveness of abatement strategies, routine NH3 monitoring is...article 2022
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van Beek, P.J.G. (author)For measurement of the gas temperature inside process piping, temperature sensors are installed in a thermowell. In most cases these cylindrical thermowells are installed perpendicular to the flow direction. Declining pressures of many aging oil & gas assets results in higher gas velocities. This will increase the so-called Strouhal frequency...conference paper 2020
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- Sprung, D. (author), Sucher, E. (author), Grossmann, P. (author), Kociok, T. (author), van Eijk, A.M.J. (author), Stein, K. (author) conference paper 2019
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Fioletov, V. (author), McLinden, C.A. (author), Kharol, S.K. (author), Krotkov, N.A. (author), Li, C. (author), Joiner, J. (author), Moran, M.D. (author), Vet, R. (author), Visschedijk, A.J.H. (author), Denier Van Der Gon, H.A.C. (author)Reported sulfur dioxide (SO2) emissions from US and Canadian sources have declined dramatically since the 1990s as a result of emission control measures. Observations from the Ozone Monitoring Instrument (OMI) on NASA's Aura satellite and ground-based in situ measurements are examined to verify whether the observed changes from SO2 abundance...article 2017
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Donovan, D.P. (author), Klein Baltink, H. (author), Henzing, J.S. (author), de Roode, S.R. (author), Siebesma, A.P. (author)The fact that polarisation lidars measure a depolarisation signal in liquid clouds due to the occurrence of multiple scattering is well known. The degree of measured depolarisation depends on the lidar characteristics (e.g. wavelength and receiver field of view) as well as the cloud macrophysical (e.g. cloud-base altitude) and microphysical (e.g...article 2015
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Vellvehi, M. (author), Perpina, X. (author), Jorda, X. (author), Werkhoven, R.J. (author), Kunen, J.M.G. (author), Jakovenko, J. (author), Bancken, P. (author), Bolt, P.J. (author)This work deals with the extraction of key thermal parameters for accurate thermal modelling of LED lamps: air exchange coefficient around the lamp, emissivity and thermal conductivity of all lamp parts. As a case study, an 8W retrofit lamp is presented. To assess simulation results, temperature is monitored on the lamp by infrared thermography...conference paper 2013
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de Louw, P.G.B. (author), Eeman, S. (author), Siemon, B. (author), Voortman, B.R. (author), Gunnink, J. (author), van Baaren, E.S. (author), Oude Essink, G.H.P. (author)In deltaic areas with saline seepage, fresh water availability is often limited to shallow rainwater lenses lying on top of saline groundwater. Here we describe the characteristics and spatial variability of such lenses in areas with saline seepage and the mechanisms that control their occurrence and size. Our findings are based on different...article 2011
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TNO Bouw en Ondergrond (author), Hultin, K.A.H. (author), Nilsson, E.D. (author), Krejci, R. (author), Mrtensson, E.M. (author), Ehn, M. (author), Hagström, Å. (author), de Leeuw, G. (author)Bubbles bursting from whitecaps are considered to be the most effective mechanism for particulate matter to be ejected into the atmosphere from the Earth's oceans. To realistically predict the climate effect of marine aerosols, global climate models require process-based understanding of particle formation from bubble bursting. During a cruise...article 2010
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Leeuwenburgh, O. (author), TNO Bouw en Ondergrond (author)The assimilation of high-quality in situ data into ocean models is known to lead to imbalanced analyses and spurious circulations when the model dynamics or the forcing contain systematic errors. Use of a bias estimation and correction scheme has been shown to significantly improve the balance of the analysed states in such cases. Given the...article 2008
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TNO Defensie en Veiligheid (author), Heard, D.E. (author), Read, K.A. (author), Methven, J. (author), Al-Haider, S. (author), Bloss, W.J. (author), Johnson, G.P. (author), Pilling, M.J. (author), Seakins, P.W. (author), Smith, S.C. (author), Sommariva, R. (author), Stanton, J.C. (author), Still, T.J. (author), Ingham, T. (author), Brooks, B. (author), de Leeuw, G. (author), Jackson, A.V. (author), McQuaid, J.B. (author), Morgan, R. (author), Smith, M.H. (author), Carpenter, L.J. (author), Carslaw, N. (author), Hamilton, J. (author), Hopkins, J.R. (author), Lee, J.D. (author), Lewis, A.C. (author), Purvis, R.M. (author), Wevill, D.J. (author), Brough, N. (author), Green, T. (author), Mills, G. (author), Penkett, S.A. (author), Plane, J.M.C. (author), Saiz-Lopez, A. (author), Worten, D. (author), Monks, P.S. (author), Fleming, Z. (author), Rickard, A.R. (author), Alfarra, M.R. (author), Allan, J.D. (author), Bower, K. (author), Coe, H. (author), Cubison, M. (author), Flynn, M. (author), McFiggans, G. (author), Gallagher, M. (author), Norton, E.G. (author), O'Dowd, C.D. (author), Shillito, J. (author), Topping, D. (author), Vaughan, G. (author), Williams, P. (author), Bitter, M. (author), Ball, S.M. (author), Jones, R.L. (author), Povey, I.M. (author), O'Doherty, S. (author), Simmonds, P.G. (author), Allen, A. (author), Kinnersley, R.P. (author), Beddows, D.C.S. (author), Dall'Osto, M. (author), Harrison, R.M. (author), Donovan, R.J. (author), Heal, M.R. (author), Jennings, S.G. (author), Noone, C. (author), Spain, G. (author)The North Atlantic Marine Boundary Layer Experiment (NAMBLEX), involving over 50 scientists from 12 institutions, took place at Mace Head, Ireland (53.32° N, 9.90° W), between 23 July and 4 September 2002. A wide range of state-of-the-art instrumentation enabled detailed measurements of the boundary layer structure and atmospheric composition in...article 2006