G
Geert-Jan Roelofs
Researcher at Utrecht University
Publications - 60
Citations - 4661
Geert-Jan Roelofs is an academic researcher from Utrecht University. The author has contributed to research in topics: Troposphere & Stratosphere. The author has an hindex of 30, co-authored 60 publications receiving 4420 citations. Previous affiliations of Geert-Jan Roelofs include Wageningen University and Research Centre.
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Journal ArticleDOI
Global air pollution crossroads over the Mediterranean
Jos Lelieveld,Harald Berresheim,Stephan Borrmann,Paul J. Crutzen,Frank Dentener,Horst Fischer,Johann Feichter,Piotr J. Flatau,Piotr J. Flatau,J. Heland,Rupert Holzinger,R. Korrmann,Mark Lawrence,Zev Levin,Krzysztof M. Markowicz,Krzysztof M. Markowicz,Nikos Mihalopoulos,Andreas Minikin,Veerabhadran Ramanathan,M. de Reus,Geert-Jan Roelofs,H. A. Scheeren,Jean Sciare,Hans Schlager,Martin G. Schultz,Peter Siegmund,Benedikt Steil,Euripides G. Stephanou,Philip Stier,M. Traub,Carsten Warneke,Jonathan Williams,Helmut Ziereis +32 more
TL;DR: The Mediterranean Intensive Oxidant Study, performed in the summer of 2001, uncovered air pollution layers from the surface to an altitude of 15 kilometers, causing air pollution standards to be exceeded throughout the region.
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Stratosphere-troposphere exchange: A review, and what we have learned from STACCATO
Andreas Stohl,Paolo Bonasoni,Paolo Cristofanelli,William J. Collins,Johann Feichter,A. Frank,Caroline Forster,Evangelos Gerasopoulos,Heinz W. Gäggeler,P. James,T. Kentarchos,Helga Kromp-Kolb,B. C. Krüger,C. Land,J. Meloen,Alexandros Papayannis,Alfred Priller,Petra Seibert,Michael Sprenger,Geert-Jan Roelofs,H. E. Scheel,Christoph Schnabel,Peter Siegmund,Leonhard Tobler,Thomas Trickl,Heini Wernli,Volkmar Wirth,Prodromos Zanis,Christos Zerefos +28 more
TL;DR: The Influence of Stratosphere-Troposphere Exchange in a Changing Climate on Atmospheric Transport and Oxidation Capacity (STACCATO), recently funded by the European Union, provides a review of stratosphere-troposphere exchange (STE), with a focus on processes in the extratropics.
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Simulation of the tropospheric sulfur cycle in a global climate model
Johann Feichter,Erik Kjellström,Henning Rodhe,Frank Dentener,Jos Lelieveldi,Geert-Jan Roelofs +5 more
TL;DR: In this article, the authors used a global atmospheric circulation model to estimate the sulfur species DMS, SO2 and sulfate in clouds, and found that about 2 3 of the sulfate is produced within clouds, with H2O2 being the most efficient pathway.
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Variations in the predicted spatial distribution of atmospheric nitrogen deposition and their impact on carbon uptake by terrestrial ecosystems
Elisabeth A. Holland,Bobby H. Braswell,Jean-Francois Lamarque,Alan R. Townsend,Alan R. Townsend,James Sulzman,Jean-François Müller,Frank Dentener,Guy Brasseur,Hiram Levy,Joyce E. Penner,Geert-Jan Roelofs +11 more
TL;DR: In this article, the authors evaluated the importance of the spatial distribution of nitrogen deposition for carbon uptake and to better quantify its magnitude and uncertainty using five different three-dimensional chemical models, GCTM, GRANTOUR, IMAGES, MOGUNTIA, and ECHAM.
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Model study of the influence of cross-tropopause O3 transports on tropospheric O3 levels
Geert-Jan Roelofs,Jos Lelieveld +1 more
TL;DR: In this paper, a chemistry-based general circulation model with relatively high spatial and temporal resolution was used to estimate the contribution of the stratospheric O 3 source in the troposphere.