Results 41 to 50 of about 1,937 (214)

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

Iron Energy Carrier: Experimental Characterisation, Combustion Diagnostic and Benchmarking with Other Clean Metal Fuels

Energy Science &Engineering, EarlyView.
This study investigates how iron particles burn across a wide size range, revealing late‐stage nanoparticle release and a previously unrecognised shift in combustion behaviour near 118 µm. High‐speed imaging, PMT diagnostics and SEM analyses have been conducted.
Zakaria Mansouri
wiley   +1 more source

Regional and seasonal impact of hydrogen propulsion systems on potential contrail cirrus cover

Atmospheric Environment: X
The decarbonization of air transportation requires novel propulsion concepts in order to replace fossil kerosene powered gas turbines. Within various options, H2 based propulsion is one of the most promising candidates, at least for regional and short ...
Stefan Kaufmann, Rebecca Dischl, Christiane Voigt   +2 more
doaj   +1 more source

Do supersonic aircraft avoid contrails? [PDF]

Atmospheric Chemistry and Physics, 2008
The impact of a potential future fleet of supersonic aircraft on contrail coverage and contrail radiative forcing is investigated by means of simulations with the general circulation model ECHAM4.L39(DLR) including a contrail parameterization.
A. Stenke, V. Grewe, S. Pechtl
doaj  

Satellite‐Derived Leaf Photosynthetic Capacity Data Set Improves Atmospheric Inversion of Terrestrial Carbon Fluxes

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Accurately estimating the terrestrial carbon sink is crucial for understanding the global carbon cycle. Here, we examine how different parameterizations of the key leaf photosynthetic capacity parameter, namely the maximum Rubisco carboxylation rate normalized to 25°C (Vcmax25), influence terrestrial carbon flux estimates within an atmospheric
Lei Shu, Jing M. Chen, Mingzhu Xu, Yihong Liu, Fei Jiang, Weimin Ju   +5 more
wiley   +1 more source

Feasibility of contrail avoidance in a commercial flight planning system: an operational analysis

Environmental Research: Infrastructure and Sustainability
Aircraft condensation trails, also known as contrails, contribute a substantial portion of aviation’s overall climate footprint. Contrail impacts can be reduced through smart flight planning that avoids contrail-forming regions of the atmosphere.
A Martin Frias, M L Shapiro, Z Engberg, R Zopp, M Soler, M E J Stettler   +5 more
doaj   +1 more source

Differentiating Solar Radiation Modification Field Experiments: Scale, Technical Characteristics, and Governance Implications

Earth's Future, Volume 14, Issue 5, May 2026.
Abstract Proposed solar radiation modification (SRM) field experiments are receiving growing scientific and policy attention, with several localized experiments having occurred or under development. While they may be critical for improving technical understanding and reducing uncertainties, SRM field experiments remain controversial and inadequately ...
B. H. Redmond Roche, I. Hernandez‐Galindo, A. Määttänen, J. C. Moore, O. Boucher, B. M. Dollner, A. Duffey, B. Gasparini, J. Henneberger, A. N. Koyun, D. McGrath, I. Steinke, J. Vinders, D. Visioni, P. J. Irvine   +14 more
wiley   +1 more source

Understanding sources of contrail cirrus radiative forcing uncertainty using a new diagnostic contrail scheme for the UK Earth System Model

, 2023
Condensation trails (contrails) are aircraft-induced line-shaped high clouds, which may persist and grow to form contrail cirrus in ice supersaturated regions.
Morcrette, Cyril, Van Weverberg, Kwinten, Furtado, Kalli, Francis, Timmy, Forster, Piers, Rap, Alexandru, Feng, Wuhu, Zhang, Weiyu   +7 more
core   +1 more source

Contrail Formation Within Cirrus: Contrail Induced Perturbations and Cirrus Adjustments

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Contrail formation constitutes a large fraction of the aviation climate impact. But only part of the effect has been studied in detail, as research focused on contrail formation in cloud‐free air. Even though it is known that the impact of contrail formation within cirrus can be detected in space‐born remote sensing data, little research has ...
Pooja Verma, Ulrike Burkhardt
wiley   +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