I
I. Köhler
Researcher at German Aerospace Center
Publications - 13
Citations - 930
I. Köhler is an academic researcher from German Aerospace Center. The author has contributed to research in topics: NOx & Ozone layer. The author has an hindex of 9, co-authored 13 publications receiving 911 citations.
Papers
More filters
Journal ArticleDOI
Estimations of global no, emissions and their uncertainties
David S. Lee,I. Köhler,E. Grobler,Franz Rohrer,Robert Sausen,L. Gallardo-Klenner,J. G. J. Olivier,Frank Dentener,Alexander F. Bouwman +8 more
TL;DR: The AERONOX program investigated the impact of NOx emissions from aircraft on the atmosphere and included an extensive modelling program as discussed by the authors, which was used to compare emissions from both aviation and non-aviation sources.
Journal ArticleDOI
Evaluation and intercomparison of global atmospheric transport models using 222Rn and other short-lived tracers
Daniel J. Jacob,Michael J. Prather,Philip J. Rasch,Run-Lie Shia,Yves Balkanski,S. R. Beagley,Daniel Bergmann,W. T. Blackshear,Margaret Brown,Masaru Chiba,Martyn P. Chipperfield,J. de Grandpré,Jane Dignon,Johann Feichter,Christophe Genthon,William L. Grose,Prasad S. Kasibhatla,I. Köhler,Mark A. Kritz,K. S. Law,Joyce E. Penner,Michel Ramonet,Claire E. Reeves,D. A. Rotman,Deianeira Z. Stockwell,Peter van Velthoven,Gé Verver,Oliver Wild,Hu Yang,Peter H. Zimmermann +29 more
TL;DR: In this article, simulations of 222Rn and other short-lived tracers are used to evaluate and intercompare the representations of convective and synoptic processes in 20 global atmospheric transport models.
Journal ArticleDOI
Results of an interactively coupled atmospheric chemistry – general circulation model: Comparison with observations
R. Hein,Martin Dameris,C. Schnadt,C. Land,C. Land,Volker Grewe,I. Köhler,Michael Ponater,Robert Sausen,Benedikt Steil,J. Landgraf,Christoph Brühl +11 more
TL;DR: The coupled climate-chemistry model ECHAM4.L39(DLR)/CHEM is presented in this article which enables a simultaneous treatment of meteorology and atmospheric chemistry and their feedbacks.
Journal ArticleDOI
Contributions of aircraft emissions to the atmospheric NOx content
TL;DR: In this paper, the relative contribution of aircraft emissions to the total atmospheric NOx content is studied by means of the atmosphere general circulation model ECHAM, which was extended by a simplified (linear) NOx chemistry module with NOx and HNO3 as prognostic variables.
Journal ArticleDOI
Impact of aircraft NOx emissions on tropospheric and stratospheric ozone. part II: 3-D model results
TL;DR: In this paper, the global three-dimensional dynamic-chemical model ECHAM3/CHEM is employed to estimate the impact of present and future sub-and supersonic aircraft NOx emissions on ozone.