Results 81 to 90 of about 7,293 (255)
Chemtrails are Not Contrails: Radiometric Evidence
, 2020 Aims: Concerted efforts are made to deceive the public into falsely believing the jet-emplaced tropospheric aerosol trails, called chemtrails by some, are harmless ice-crystal contrails from aircraft engine exhaust-moisture.
J. Herndon +2 more
semanticscholar +1 more source
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 +10 more
wiley +1 more source
A Lagrangian analysis of ice-supersaturated air over the North Atlantic [PDF]
, 2013 Understanding the nature of air parcels that exhibit ice-supersaturation is important because they are the regions of potential formation of both cirrus and aircraft contrails, which affect the radiation balance.
Hoskins, B. J. +2 more
core +1 more source
Aircraft induced contrail cirrus over Europe
Meteorologische Zeitschrift, 2005 Condensation trails (contrails) and aircraft induced cirrus are nowadays a common feature at the mid latitude skies. Previously the impact of aircraft induced cirrus changes has been roughly estimated from observed decadal trends in cirrus cover but the ...
Hermann Mannstein, Ulrich Schumann
doaj +1 more source
Ground-based mobile scanning LIDAR for remote sensing of contrails [PDF]
Annales Geophysicae, 1994 Air traffic is a source of trace gases in the upper troposphere and lower stratosphere. Contrails readily form from water vapor exhausts under favorable meteorological conditions. Since contrails are ice crystal clouds like natural cirrus clouds, they
V. Freudenthaler, F. Homburg, H. Jäger
doaj +1 more source
, 2004 This PDF document discusses a field activity for K-12 students. The purpose of the activity is to observe type and cover of clouds including contrails.
GLOBE Program of the United States of America
core
Evaluation of the use of radiosonde humidity data to predict the occurrence of persistent contrails [PDF]
, 2007 Regular visual observations of persistent contrails over Reading, UK, have been used to evaluate radiosonde measurements of temperature and humidity defining cold ice-supersaturated atmospheric regions which are assumed to be a necessary condition for ...
Appleman +37 more
core +1 more source
Journal of Advances in Modeling Earth Systems, Volume 17, Issue 10, October 2025.Abstract Shallow cumulus cloud fields in subtropical marine trade wind environments, particularly over the tropical Atlantic Ocean, show distinct organizational patterns. Among these, Flower‐type clouds are characterized by expansive stratiform cloud patches surrounded by regions of scattered convection.
Girish Nigamanth Raghunathan +7 more
wiley +1 more source
Selected topics on the interaction between cirrus clouds and embedded contrails [PDF]
Atmospheric Chemistry and Physics, 2012 Persistent contrails and natural cirrus clouds often coexist in the upper troposphere and contrails can be embedded within cirrus clouds. The present paper deals with some questions regarding the interaction of cirrus clouds and embedded contrails.
K. Gierens
doaj +1 more source
Earth's Future, Volume 13, Issue 10, October 2025.Abstract Several lines of evidence indicate that aviation‐induced cirrus clouds contribute to global warming. These clouds produce both longwave and shortwave radiative forcing, yet their climate impacts are not well understood. To improve understanding of the climate effects of radiative forcing associated with aviation‐induced cirrus clouds, we use ...
Tresa Mary Thomas +3 more
wiley +1 more source