Results 61 to 70 of about 15,587 (203)

On the radiative properties of contrail cirrus [PDF]

Geophysical Research Letters, 1998
Using the observed ice crystal size distribution in contrail cirrus from SUCCESS, we have carried out the scattering and absorption calculations based on a unified theory for light scattering by ice crystals covering all sizes and shapes. We illustrate the effects of ice crystal size and surface roughness on the scattering phase function features for ...
K. N. Liou, P. Yang, Y. Takano, K. Sassen, T. Charlock, W. Arnott   +5 more
openaire   +1 more source

In-situ observations of young contrails – overview and selected results from the CONCERT campaign [PDF]

Atmospheric Chemistry and Physics, 2010
Lineshaped contrails were detected with the research aircraft Falcon during the CONCERT – CONtrail and Cirrus ExpeRimenT – campaign in October/November 2008.
C. Voigt, U. Schumann, T. Jurkat, D. Schäuble, H. Schlager, A. Petzold, J.-F. Gayet, M. Krämer, J. Schneider, S. Borrmann, J. Schmale, P. Jessberger, T. Hamburger, M. Lichtenstern, M. Scheibe, C. Gourbeyre, J. Meyer, M. Kübbeler, W. Frey, H. Kalesse, T. Butler, M. G. Lawrence, F. Holzäpfel, F. Arnold, M. Wendisch, A. Döpelheuer, K. Gottschaldt, R. Baumann, M. Zöger, I. Sölch, M. Rautenhaus, A. Dörnbrack   +31 more
doaj   +1 more source

Atmospheric Adjustments to In Situ Cirrus Formation in Ice Supersaturated Regions

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract High‐level ice clouds exert a net warming on the climate system because their greenhouse effect outweighs their albedo effect. Focusing on in‐situ cirrus, their formation involves the conversion of upper‐tropospheric water vapor into ice crystals.
Jérémie Juvin‐Quarroz, Audran Borella, Patryk Kiepas, Thomas Dubos, Olivier Boucher, Nicolas Bellouin   +5 more
wiley   +1 more source

Properties of individual contrails: a compilation of observations and some comparisons [PDF]

Atmospheric Chemistry and Physics, 2017
Mean properties of individual contrails are characterized for a wide range of jet aircraft as a function of age during their life cycle from seconds to 11.5 h (7.4–18.7 km altitude, −88 to −31 °C ambient temperature), based on a compilation of about 230 ...
U. Schumann, R. Baumann, D. Baumgardner, S. T. Bedka, D. P. Duda, V. Freudenthaler, J.-F. Gayet, A. J. Heymsfield, P. Minnis, M. Quante, E. Raschke, H. Schlager, M. Vázquez-Navarro, C. Voigt, Z. Wang   +14 more
doaj   +1 more source

Assessment of Cirrus Cloud Optical and Microphysical Data Reliability by Applying Statistical Procedures

, 2005
A methodology of employing statistical procedures, specifically the principal component analysis (PCA) technique, to assess cirrus cloud data reliability is described.
Ström, Johan, Minikin, Andreas, Gayet, J.F., Gayet, Jean-François, Jourdan, Olivier, Shcherbakov, V., Jourdan, O., Petzold, A., Ström, J., Shcherbakov, Valery, Minikin, A., Petzold, Andreas   +11 more
core   +1 more source

Beyond Contrail Avoidance: Efficacy of Flight Altitude Changes to Minimise Contrail Climate Forcing

Aerospace, 2020
Contrail cirrus introduce a short-lived but significant climate forcing that could be mitigated by small changes in aircraft cruising altitudes. This paper extends a recent study to evaluate the efficacy of several vertical flight diversion strategies to
Roger Teoh, Ulrich Schumann, Marc E. J. Stettler   +2 more
doaj   +1 more source

Contrail Observation Limitations Using Geostationary Satellites

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Contrails are a significant contributor to aviation's climate impact with an effective radiative forcing similar to that from aviation's CO2 ${\text{CO}}_{2}$ emissions, yet large uncertainties remain. Many observational contrail studies rely on data from a single sensor, in recent years increasingly from a geostationary imager, accepting ...
Marlene V. Euchenhofer, Prakash Prashanth, Sydney A. Parke, Sebastian D. Eastham, Ian A. Waitz   +4 more
wiley   +1 more source

A New Classification of In Situ and Anvil Cirrus Clouds Uncovers Their Properties and Interhemispheric Connections

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract The challenge of distinguishing convective anvil cirrus from in situ cirrus has long limited the quantification of their distinct roles in regulating upper‐tropospheric moisture and modulating Earth's energy budget. In this study, we address this ambiguity by introducing a physically constrained classification framework that applies advanced ...
Qingyu Mu, Jinming Ge, Jianping Huang, Xiaoyu Hu, Nan Peng, Yize Li, Meihua Wang, Jie Zhang, Ziyang Xu, Chi Zhang, Bochun Liu   +10 more
wiley   +1 more source

Assessing the climate impact of the AHEAD multi-fuel blended wing body

Meteorologische Zeitschrift, 2017
Air traffic is important to our society and guarantees mobility especially for long distances. Air traffic is also contributing to climate warming via emissions of CO2 and various non-CO2 effects, such as contrail-cirrus or increase in ozone ...
Volker Grewe, Lisa Bock, Ulrike Burkhardt, Katrin Dahlmann, Klaus Gierens, Ludwig Hüttenhofer, Simon Unterstrasser, Arvind Gangoli Rao, Abhishek Bhat, Feijia Yin, Thoralf G. Reichel, Oliver Paschereit, Yeshayahou Levy   +12 more
doaj   +1 more source

Influence of vortex dynamics and atmospheric turbulence on the early evolution of a contrail [PDF]

Atmospheric Chemistry and Physics, 2010
This study describes three-dimensional numerical simulations of the evolution of an aircraft contrail during the first 30 min following the emission of exhausts.
R. Paugam, R. Paoli, D. Cariolle
doaj   +1 more source