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Pseftogkas, A. (author), Koukouli, M.E. (author), Segers, A.J. (author), Manders, A.M.M. (author), van Geffen, J. (author), Balis, D. (author), Meleti, C. (author), Stavrakou, T. (author), Eskes, H. (author)The aim of this paper is to evaluate the surface concentration of nitrogen dioxide (NO2) inferred from the Sentinel-5 Precursor Tropospheric Monitoring Instrument (S5P/TROPOMI) NO2 tropospheric column densities over Central Europe for two time periods, summer 2019 and winter 2019–2020. Simulations of the NO2 tropospheric vertical column...article 2022
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BuendDia, V.G. (author), Podilchak, S.K. (author), Liberto, S. (author), Walkinshaw, T. (author), Constantinides, C. (author), Anagnostou, D.E. (author), Goussetis, G. (author), Vorst, M.V.D. (author)A miniaturized planar Yagi-Uda antenna for integration with PicoSats or other SmallSat missions is proposed. Miniaturization techniques, such as meandering and 1-D artificial dielectric concepts to reduce the guided wavelength, are employed to overcome space constraints imposed by the SmallSat footprint while still maintaining good performance...article 2022
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Derkink, F.M. (author), Doelman, D. (author), van Dam, D. (author), Brenny, B.J.M. (author), Speet, B.G. (author), van Brug, H. (author), Keller, C. (author), Snik, F. (author)While the concentrations of trace gases in Earth’s atmosphere were roughly constant for thousands of years, human activities such as the burning of fossil fuels have caused significant changes ever since the industrial revolution. The remote sensing of trace gases has proved to be a useful technique for mapping and monitoring on the global scale...conference paper 2022
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Kurchaba, S. (author), van Vliet, J. (author), Verbeek, F.J. (author), Meulman, J.J. (author), Veenman, C.J. (author)The shipping industry is one of the strongest anthropogenic emitters of NOx—a substance harmful both to human health and the environment. The rapid growth of the industry causes societal pressure on controlling the emission levels produced by ships. All the methods currently used for ship emission monitoring are costly and require proximity to a...article 2022
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Swartz, W.H. (author), Krotkov, N.A. (author), Lamsal, L.N. (author), Otter, G.C.J. (author), van Kempen, F.C.M. (author), Boldt, J.D. (author), Morgan, M.F. (author), der Laan, L.W.van (author), Zimbeck, W.R. (author), Storck, S.M. (author), Post, Z.J. (author), Janz, S.J. (author), Kowalewski, M.G. (author), Li, C. (author), Veefkind, J.P. (author), Levelt, P.F. (author)Adverse air quality impacts human health and climate and has implications for environmental equity. The Compact Hyperspectral Air Pollution Sensor (CHAPS) is a newly designed small imaging spectrometer for remote sensing of nitrogen dioxide (NO2) and other air pollutants from space. It incorporates two emerging technologies, to achieve the...conference paper 2021
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van Brug, H. (author), Visser, H. (author), Brenny, B.J.M. (author), van der Valk, N.C.J. (author), Sierk, B. (author), Heliere, A. (author), Rusli, S. (author), Landgraf, J. (author)CarbonHIGS is a 2D imager designed to measure the enhancement of CO2 concentration in emission plumes from power plants. The origin of HIGS, and the physics of the working principle will be explained. Two possible implementations of HIGS will be presented, i.e. one that uses power splitting while the other one uses polarization splitting. The...conference paper 2020
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Devecchi, B.A. (author), Benoist, K.W. (author), Scheers, L.C.W. (author), Veerman, H.E.T. (author), Binsbergen, S.A. (author), van Eijk, A.M.J. (author)Infrared imaging of the sea surface is used for many purposes, such as remote sensing of large oceanographic structures, environmental monitoring, surveillance applications and platform signature research. Many of these studies rely on determining the contrast of a target feature with its background and therefore benefit from accurately...conference paper 2019
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Court, A.J. (author), Bezy, J.L. (author), Levelt, P. (author), Siegl, M. (author), Leemhuis, A.P. (author), van de Valk, N.C.J. (author), Veefkind, P. (author)The impact of NO2 and other atmospheric trace gases on health and the environment is now acknowledged by governments around the world. The sources, both natural and anthropogenic, have been shown to affect the quality of life due to low air quality in densely populated areas. Consequently, the need for accurate global NO2 measurements with high...conference paper 2018
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Pinto, M.J. (author), Barros, A.I. (author), Noomen, R. (author), van Gelder, P.H.A.J.M. (author), Lamballais Tessensohn, T. (author)The operational use of satellite systems has been increasing due to technological advances and the reduced costs of satellites and their launching. As such it has become more relevant to determine how to better use these new capabilities which is reflected in an increase in application studies in this area. This work focuses on the problem of...conference paper 2018
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Fokker, P.A. (author), van Leijen, F.J. (author), Orlic, B. (author), van der Marel, H. (author), Hanssen, R.F. (author)Ground surface dynamics is one of the processes influencing the future of the Wadden Sea area. Vertical land movement, both subsidence and heave, is a direct contributor to changes in the relative sea level. It is defined as the change of height of the Earth’s surface with respect to a vertical datum. In the Netherlands, the Normaal Amsterdams...article 2018
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Müller, W. (author), Kuwertz, A. (author), Grönwall, C. (author), Petersson, H. (author), Dekker, R. (author), Reinert, F. (author), Ditzel, M. (author)Experiences from recent conflicts show the strong need for smart sensor suites comprising different multi-spectral imaging sensors as core elements as well as additional non-imaging sensors. Smart sensor suites should be part of a smart sensor network - A network of sensors, databases, evaluation stations and user terminals. Its goal is to...conference paper 2017
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Lu, S. (author), Heemink, A. (author), Lin, H.X. (author), Segers, A. (author), Fu, G. (author)Remote sensing, as a powerful tool for monitoring atmospheric phenomena, has been playing an increasingly important role in inverse modeling. Remote sensing instruments measure quantities that often combine several state variables as one. This creates very strong correlations between the state variables that share the same observation variable....article 2017
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Pinto, M.J. (author), Barros, A.I. (author), Noomen, R. (author), van Gelder, P.H.A.J.M. (author), Lamballais Tessensohn, T. (author)The operational use of satellite systems has been increasing due to technological advances and the reduced costs of satellites and their launching. As such it has become more relevant to determine how to better use these new capabilities which is reflected in an increase in application studies in this area. This work focuses on the problem of...conference paper 2017
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Albert, M.F.M.A. (author), Anguelova, M.D. (author), Manders, A.M.M. (author), Schaap, M. (author), de Leeuw, G. (author)Satellite-based whitecap fraction (W) data have been used to predict sea spray aerosol (SSA) emission rates. This allows to evaluate how an account for natural variability of whitecaps in the W parameterization would affect SSA mass flux predictions when using a sea spray source function (SSSF) based on the whitecap method. Data set containing W...conference paper 2017
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- Bekers, J. (author), Van Rossum, W.L. (author), Jacobs, S. (author), Heiligers, M.J.C. (author), Anitori, L. (author), Stolp, E. (author), Cifola, L. (author), Podt, M. (author) conference paper 2016
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van Brug, H. (author), Visser, H. (author)This paper describes one of the issues that are facing the remote sensing community in the not so far future; scientists ask for certain requirement that cannot be fulfilled either due to cost issues or technological issues. The paper starts with giving a short and quick historical overview of the development of spectrometer based remote sensing...conference paper 2016
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van der Wal, L.F. (author), de Goeij, B.T.G. (author), Jansen, R. (author), Oosterling, J.A.J. (author), Snijders, B. (author)The market for nano-and microsatellites is developing rapidly. There is a strong focus on 2D imaging of the Earth's surface, with limited possibilities to obtain spectral information. More demanding applications, such as monitoring trace gases, aerosols or water quality still require advanced imaging instruments, which are large, heavy and...conference paper 2016
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Gür, B. (author), Bol, H. (author), Xu, P. (author), Li, B. (author)The present paper describes the challenging diffuser design and verification activities of TNO under contract of a customer for an earth observation instrument with observation conditions that require feasible BRDF under large angles of incidence of up to 70° with respect to the surface normal. Not only the design though but also the...conference paper 2015
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Li, Y. (author), Hoogeboom, P. (author), Russchenberg, H. (author)Fog is a significant factor affecting the public traffic because visibility is reduced to a large extent. Therefore the determination of optical visibility in fog from radar instruments has received much interest. To observe fog with radar, high frequency bands (millimeter waves) have the best option. A 35 GHz cloud radar at the Cabauw...conference paper 2014
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Sutanudjaja, E.H. (author), van Beek, L.P.H. (author), de Jong, S.M. (author), van Geer, F.C. (author), Bierkens, M.F.P. (author)We explore the possibility of using remotely sensed soil moisture data and in situ discharge observations to calibrate a large-extent hydrological model. The model used is PCR-GLOBWB-MOD, which is a physically based and fully coupled groundwater-land surface model operating at a daily basis and having a resolution of 30 arc sec (about 1 km at...article 2014