Search Results - "van Geffen, J. H. G. M."

Improved spectral fitting of nitrogen dioxide from OMI in the 405–465 nm window by van Geffen, J. H. G. M., Boersma, K. F., Van Roozendael, M., Hendrick, F., Mahieu, E., De Smedt, I., Sneep, M., Veefkind, J. P.

“…An improved nitrogen dioxide (NO2) slant column density retrieval for the Ozone Monitoring Instrument (OMI) in the 405–465 nm spectral region is presented…”
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NOx Emissions Reduction and Rebound in China Due to the COVID‐19 Crisis by Ding, J., A, R. J., Eskes, H. J., Mijling, B., Stavrakou, T., Geffen, J. H. G. M., Veefkind, J. P.

“…During the COVID‐19 lockdown (24 January–20 March) in China low air pollution levels were reported in the media as a consequence of reduced economic and social…”
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Quantification of nitrogen oxides emissions from build-up of pollution over Paris with TROPOMI by Lorente, A., Boersma, K. F., Eskes, H. J., Veefkind, J. P., van Geffen, J. H. G. M., de Zeeuw, M. B., Denier van der Gon, H. A. C., Beirle, S., Krol, M. C.

“…Nitrogen dioxide (NO 2 ) is a regulated air pollutant that is of particular concern in many cities, where concentrations are high. Emissions of nitrogen oxides…”
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Improving algorithms and uncertainty estimates for satellite NO2 retrievals: results from the quality assurance for the essential climate variables (QA4ECV) project by K Folkert Boersma, Eskes, Henk J, Richter, Andreas, De Smedt, Isabelle, Lorente, Alba, Beirle, Steffen, Jos H G M van Geffen, Zara, Marina, Peters, Enno, Michel Van Roozendael, Wagner, Thomas, Maasakkers, Joannes D, Ronald J van der A, Nightingale, Joanne, De Rudder, Anne, Irie, Hitoshi, Pinardi, Gaia, Jean-Christopher, Lambert, Compernolle, Steven C

“…Global observations of tropospheric nitrogen dioxide (NO2) columns have been shown to be feasible from space, but consistent multi-sensor records do not yet…”
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Improved slant column density retrieval of nitrogen dioxide and formaldehyde for OMI and GOME-2A from QA4ECV: intercomparison, uncertainty characterisation, and trends by Zara, Marina, Boersma, K. Folkert, De Smedt, Isabelle, Richter, Andreas, Peters, Enno, van Geffen, Jos H. G. M, Beirle, Steffen, Wagner, Thomas, Van Roozendael, Michel, Marchenko, Sergey, Lamsal, Lok N, Eskes, Henk J

“…Nitrogen dioxide (NO2) and formaldehyde (HCHO) column data from satellite instruments are used for air quality and climate studies. Both NO2 and HCHO have been…”
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TEMIS UV product validation using NILU-UV ground-based measurements in Thessaloniki, Greece by Zempila, Melina-Maria, van Geffen, Jos H. G. M, Taylor, Michael, Fountoulakis, Ilias, Koukouli, Maria-Elissavet, van Weele, Michiel, van der A, Ronald J, Bais, Alkiviadis, Meleti, Charikleia, Balis, Dimitrios

“…This study aims to cross-validate ground-based and satellite-based models of three photobiological UV effective dose products: the Commission Internationale de…”
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A monopolar vortex encounters an isolated topographic feature on a β-plane by van Geffen, J.H.G.M., Davies, P.A.

“…A two-dimensional (2D) numerical model is used to investigate the possible effects of a cosine-shaped, circularly symmetric seamount on the motion of a…”
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Interaction of a monopolar vortex with a topographic ridge by Van Geffen, J. H. G. M., Davies, P. A.

“…The interaction of a monopolar vortex with a cosine-shaped topographic ridge at the equator is investigated with a two-dimensional numerical model, where the…”
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