Results 51 to 60 of about 5,933 (229)

Chandra imaging of the X-ray core of Abell 1795 [PDF]

, 2000
We report the discovery of a 40 arcsec long X-ray filament in the core of the cluster of galaxies A1795. The feature coincides with an Halpha+NII filament found by Cowie et al in the early 1980s and resolved into at least 2 U-band filaments by McNamara ...
Allen, S. W., Crawford, C. S., Ettori, S., Fabian, A. C., Iwasawa, K., Johnstone, R. M., Sanders, J. S., Taylor, G. B.   +7 more
core   +2 more sources

Modeling the Impact of Alternative Fuels and Hydrogen Propulsion on Contrail‐Cirrus: A Parameter Study

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 2, 28 January 2026.
Abstract Line‐shaped contrails formed behind aircraft can evolve into broadly spread and long‐living cirrus clouds under favorable conditions. These contrail‐cirrus contribute significantly to the aviation‐induced radiative forcing. While past modeling studies have examined contrail‐cirrus across various atmospheric and aircraft‐type dependent ...
Annemarie Lottermoser, Simon Unterstrasser   +1 more
wiley   +1 more source

Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissions

Journal of Advances in Modeling Earth Systems, 2012
This paper documents the incorporation of an inventory of the AEDT (Aviation Environmental Design Tool) global commercial aircraft emissions for the year of 2006 into the National Center for Atmospheric Research Community Earth System Model (CESM ...
Cheryl Craig, Andrew Gettelman, Chih-Chieh Chen, Patrick Minnis, David Duda   +4 more
doaj  

Formation of Hole Punch Clouds

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 1, 16 January 2026.
Abstract Hole‐punch clouds (HPCs) are circular or oval cloudless holes in thin supercooled cloud layers. They are believed to be generated by aircraft passing through supercooled cloud layers; however, the exact formation mechanisms remain poorly understood due to the scarcity of observations.
S. Iwasaki, H. Fujii
wiley   +1 more source

Modelling and evaluation of aircraft contrails for 4-dimensional trajectory optimisation [PDF]

, 2015
Contrails and aircraft-induced cirrus clouds are reputed being the largest components of aviation-induced global warming, even greater than carbon dioxide (CO2) exhaust emissions by aircraft.
Gardi, A, Lim, Y, Sabatini, R
core   +1 more source

Freshly Generated Super Sunrise Plasma Bubbles During the Geomagnetic Storm on November 5–6, 2023

Space Weather, Volume 24, Issue 1, January 2026.
Abstract During the geomagnetic storm on November 5–6, 2023, freshly generated super sunrise equatorial plasma bubbles (EPBs) and associated irregularities over the 80°–140°E sector were observed combining ground‐based and space observations from GNSS, ionosondes, HF Doppler records, and several satellite missions (COSMIC2, Swarm, and DMSP).
Ke Li, Donghe Zhang, Yaoyu Tian, Yi Zeng, Guanglin Yang, Xiukuan Zhao, Guozhu Li, Yongqiang Hao   +7 more
wiley   +1 more source

Nighttime Contrail Characterization from Multisource Lidar and Meteorological Observations

Remote Sensing
The present study provides a comprehensive nighttime contrail characterization combining Raman lidar, ADS-B flight data, and ECMWF ERA5 reanalysis over southern France.
Florian Mandija, Philippe Keckhut, Dunya Alraddawi, Abdanour Irbah, Alain Sarkissian, Sergey Khaykin, Frédéric Peyrin, Jean-Luc Baray   +7 more
doaj   +1 more source

Influence of temperature and humidity on contrail formation regions in the general circulation model EMAC: a spring case study [PDF]

Atmospheric Chemistry and Physics
While carbon dioxide emissions from aviation often dominate climate change discussions, non-CO2 effects such as contrails and contrail cirrus must also be considered.
P. Peter, P. Peter, S. Matthes, C. Frömming, P. Jöckel, L. Bugliaro, A. Giez, M. Krämer, M. Krämer, V. Grewe, V. Grewe   +10 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

Impact of biofuels on contrail warming

Environmental Research Letters, 2017
Contrails and contrail-cirrus may be the largest source of radiative forcing (RF) attributable to aviation. Biomass-derived alternative jet fuels are a potentially major way to mitigate the climate impacts of aviation by reducing lifecycle CO _2 ...
Fabio Caiazzo, Akshat Agarwal, Raymond L Speth, Steven R H Barrett   +3 more
doaj   +1 more source