Results 71 to 80 of about 480 (177)

Contrails, contrail cirrus, and ship tracks [PDF]

, 2006
The following text is an enlarged version of the conference tutorial lecture on contrails, contrail cirrus, and ship tracks. I start with a general introduction into aerosol effects on clouds. Contrail formation and persistence, aviation’s share to cirrus trends and ship tracks are treated then.
openaire   +2 more sources

High-resolution modeling of early contrail evolution from hydrogen-powered aircraft [PDF]

Atmospheric Chemistry and Physics
In this study, we investigate the properties of young contrails formed behind hydrogen-powered aircraft, particularly compared to contrails from conventional kerosene combustion. High-resolution simulations of individual contrails are performed using the
A. Lottermoser, S. Unterstrasser
doaj   +1 more source

Contrail, or not contrail, that is the question: the "feasibility" of climate-optimal routing

The environmental impact of aviation has been a focus of significant research for several decades. While there is a broad consensus among stakeholders on reducing carbon emissions, leading to efforts to improve route efficiency in air traffic management, the impact of non-carbon emissions like contrails has sparked a different debate.
Sun, Junzi, Olive, Xavier
openaire   +4 more sources

Real-Time Contrail Monitoring and Mitigation Using CubeSat Constellations

Atmosphere
Contrails, or condensation trails, left by aircraft, significantly contribute to global warming by trapping heat in the Earth’s atmosphere. Despite their critical role in climate dynamics, the environmental impact of contrails remains underexplored. This
Nishanth Pushparaj, Luis Cormier, Chantal Cappelletti, Vilius Portapas   +3 more
doaj   +1 more source

Addressing Confidence in Modeling of Contrail Formation from E-Fuels in Aviation Using Large Eddy Simulation Parametrization

Energies
As it becomes increasingly necessary to reduce aviation-related emissions, condensation trails present an additional challenge. These are arguably responsible for the largest contribution to radiative forcing in the sector, but the phenomenon is still ...
Eduardo Cabrera, João M. Melo de Sousa
doaj   +1 more source

Characteristics of Ice Super Saturated Regions in Washington, D.C. Airspace (2019–2023)

Aerospace
Contrails are estimated to contribute 2% of the Earth’s anthropogenic global warming. Contrails are ice crystal clouds formed by the emission of soot and water vapor from jet engines in atmospheric conditions known as Ice Super Saturated (ISS) regions ...
Kayla Ebright, Lance Sherry
doaj   +1 more source

Intercomparison of radiative forcing calculations of stratospheric water vapour and contrails

Meteorologische Zeitschrift, 2009
Seven groups have participated in an intercomparison study of calculations of radiative forcing (RF) due to stratospheric water vapour (SWV) and contrails.
Gunnar Myhre, Maria Kvalevåg, Gaby Rädel, Jolene Cook, Keith P. Shine, Hannah Clark, Fernand Karcher, Krzysztof Markowicz, Aleksandra Kardas, Paulina Wolkenberg, Yves Balkanski, Michael Ponater, Piers Forster, Alexandrude Rap, Ruben Leon, Rodriguez   +15 more
doaj   +1 more source

Operational differences lead to longer lifetimes of satellite detectable contrails from more fuel efficient aircraft

Environmental Research Letters
Clouds produced by aircraft (known as contrails) contribute over half of the positive radiative forcing from aviation, but the size of this warming effect is highly uncertain. Their radiative effect is highly dependent on the microphysical properties and
Edward Gryspeerdt, Marc E J Stettler, Roger Teoh, Ulrike Burkhardt, Toni Delovski, Oliver G A Driver, David Painemal   +6 more
doaj   +1 more source

Contrail Detection in Satellite Images

, 2012
Methods for detecting linear contrail pixels in satellite infrared images are described. An objective contrail detection algorithm has been developed and extensively applied to data from various polar and geostationary satellite sensors. The method uses the contrast in brightness temperatures near 11 and 12 μm wavelengths and detects linear contrails ...
Mannstein, Hermann, Vazquez-Navarro, Margarita, Graf, Kaspar, Duda, David P., Schumann, Ulrich   +4 more
openaire   +2 more sources

Visual Analysis and Detection of Contrails in Aircraft Engine Simulations. [PDF]

IEEE Trans Vis Comput Graph, 2023
Nipu N, Floricel C, Naghashzadeh N, Paoli R, Marai GE.   +4 more
europepmc   +1 more source