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Klaus Gierens
The theory of contrail formation for fuel cells is derived. It is a variant of the well-known Schmidt-Appleman theory. The contrail factor or G-factor for fuel cells is much larger than for jet engines, such that condensation of the exhaust water vapour ...
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Lena Wilhelm, Klaus Gierens and Susanne Rohs
Persistent contrails and contrail cirrus are estimated to have a larger impact on climate than all CO2
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emissions from global aviation since the introduction of jet engines. However, the measure for this impact, the effective radiative forcing (ERF) or...
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Klaus Gierens, Sigrun Matthes and Susanne Rohs
Persistent contrails and contrail cirrus are responsible for a large part of aviation induced radiative forcing. A considerable fraction of their warming effect could be eliminated by diverting only a quite small fraction of flight paths, namely those th...
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Feijia Yin, Volker Grewe and Klaus Gierens
Aviation is responsible for approximately 5% of global warming and is expected to increase substantially in the future. Given the continuing expansion of air traffic, mitigation of aviation?s climate impact becomes challenging but imperative. Among vario...
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Volker Grewe, Katrin Dahlmann, Jan Flink, Christine Frömming, Robin Ghosh, Klaus Gierens, Romy Heller, Johannes Hendricks, Patrick Jöckel, Stefan Kaufmann, Katrin Kölker, Florian Linke, Tanja Luchkova, Benjamin Lührs, Jesper Van Manen, Sigrun Matthes, Andreas Minikin, Malte Niklaß, Martin Plohr, Mattia Righi, Simon Rosanka, Angela Schmitt, Ulrich Schumann, Ivan Terekhov, Simon Unterstrasser, Margarita Vázquez-Navarro, Christiane Voigt, Kai Wicke, Hiroshi Yamashita, Andreas Zahn and Helmut ZiereisaddShow full author listremoveHide full author list
The WeCare project (Utilizing Weather information for Climate efficient and eco efficient future aviation), an internal project of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt, DLR), aimed at finding solutions for reducing the c...
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Volker Grewe, Katrin Dahlmann, Jan Flink, Christine Frömming, Robin Ghosh, Klaus Gierens, Romy Heller, Johannes Hendricks, Patrick Jöckel, Stefan Kaufmann, Katrin Kölker, Florian Linke, Tanja Luchkova, Benjamin Lührs, Jesper Van Manen, Sigrun Matthes, Andreas Minikin, Malte Niklaß, Martin Plohr, Mattia Righi, Simon Rosanka, Angela Schmitt, Ulrich Schumann, Ivan Terekhov, Simon Unterstrasser, Margarita Vázquez-Navarro, Christiane Voigt, Kai Wicke, Hiroshi Yamashita, Andreas Zahn and Helmut Ziereis
The WeCare project (Utilizing Weather information for Climate efficient and eco efficient future aviation), an internal project of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt, DLR), aimed at finding solutions for reducing the c...
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