Results 71 to 80 of about 7,293 (255)
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
Contrail life cycle and properties from 1 year of MSG/SEVIRI rapid-scan images [PDF]
Atmospheric Chemistry and Physics, 2015 The automatic contrail tracking algorithm (ACTA) – developed to automatically follow contrails as they age, drift and spread – enables the study of a large number of contrails and the evolution of contrail properties with time. In this paper we present a
M. Vázquez-Navarro +2 more
doaj +1 more source
H-alpha features with hot onsets III. Fibrils in Lyman-alpha and with ALMA
, 2016 In H-alpha most of the solar surface is covered by dense canopies of long opaque fibrils, but predictions for quiet-Sun observations with ALMA have ignored this fact.
Rutten, Robert J.
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 +7 more
wiley +1 more source
Contrail formation on ambient aerosol particles for aircraft with hydrogen combustion: a box model trajectory study [PDF]
Atmospheric Chemistry and PhysicsFuture air traffic using (green) hydrogen (H2) promises zero carbon emissions, but the effects of contrails from this new technology have hardly been investigated.
A. Bier +5 more
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Properties of young contrails – a parametrisation based on large-eddy simulations [PDF]
Atmospheric Chemistry and Physics, 2016 Contrail–cirrus is probably the largest climate forcing from aviation. The evolution of contrail–cirrus and its radiative impact depends not only on a multitude of atmospheric parameters, but also on the geometric and microphysical ...
S. Unterstrasser
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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
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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 +4 more
wiley +1 more source
Factors limiting contrail detection in satellite imagery [PDF]
Atmospheric Measurement TechniquesContrails (ice clouds, originally line-shaped after initiation by aircraft exhaust) provide a significant warming contribution to the overall climate impact of aviation.
O. G. A. Driver +3 more
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, 2002 A contrail (a term introduced for “condensation trail” in 1942 by British pilots) is a visible cloud forming behind aircraft, mainly due to water vapor emissions from the engines. Contrails were first observed behind propeller-driven aircraft in 1915 but form as well from the exhaust of jet engines in cold ambient air (Schumann 1996a).
openaire +4 more sources