Results 61 to 70 of about 10,076 (197)

Climate impact of contrail cirrus [PDF]

, 2023
Der Luftverkehr ist in den letzten Jahrzehnten exponentiell angewachsen und spielt deshalb eine wichtige Rolle in der Diskussion über zukünftige Strategien zur Reduzierung von Klimaänderungen. Basierend auf Strahlungsantrieben liefern Kondensstreifen-Zirren vermutlich den größten Beitrag zur Klimawirkung des Luftverkehrs und übertreffen damit die CO2 ...
openaire   +1 more source

The Importance of Tire Wear Particles for Atmospheric Ice Nucleation

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Tire wear particles (TWPs) are prevalent microplastic particles in the atmosphere and pose significant environmental and health risks to humans. Here, we investigated the ice nucleation activity (INA) of TWPs under mixed‐phase cloud conditions (∼−20.0°C < T < −5.0°C) and its changes caused by different environmental exposures, including UV and
Siyuan Jing, Kaiqi Wang, Yanting Wang, Shuling Chen, Jie Chen, Heike Wex, Thomas C. Wanger, Xianda Gong   +7 more
wiley   +1 more source

What Is Triggering Ice in Mixed‐Phase Clouds: A Process Analysis With ECHAM6.1‐HAM2.3 Using the Factorial Method

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract Mixed‐phase clouds can be found at temperatures between 0 and −38° ${}^{\circ}$C and consist of supercooled cloud droplets and ice crystals. The phase of mixed‐phase clouds is crucial for the radiation budget, which determines the atmosphere's energy balance.
L. Ickes, D. Neubauer, U. Proske, D. Villanueva, U. Lohmann   +4 more
wiley   +1 more source

Numerical simulations of homogeneously nucleated natural cirrus and contrail-cirrus. Part 2: Interaction on local scale

Meteorologische Zeitschrift, 2017
The interaction of contrail-cirrus and natural cirrus formed by homogeneous nucleation is studied over up to ten hours by means of a LES model equipped with a Lagrangian ice microphysics module.
Simon Unterstrasser, Klaus Gierens, Ingo Sölch, Martin Wirth   +3 more
doaj   +1 more source

Buoyancy Flux and Its Environmental Modulation in the Vertical Development of Shallow Cumulus in the Central Amazon

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract This study investigates the vertical development of shallow cumulus (ShCu) clouds in the Central Amazon (CAMZ) by combining large‐eddy simulations (LES) with observational data from the GoAmazon2014/5 campaign. Analyses of turbulent kinetic energy budgets, updraft mass flux, moisture flux, and surface fluxes across cloud sizes indicate that ...
Silvio N. Figueroa, Jhonatan A. A. Manco, Georgios A. Efstathiou   +2 more
wiley   +1 more source

A fast and robust cirrus removal method for Landsat 8/9 images

International Journal of Applied Earth Observations and Geoinformation
High-quality cirrus removal plays a crucial role in remote sensing data analysis. Cirrus parallaxes are commonly observed within the vicinity of cirrus clouds in the visible and near-infrared (VNIR) bands of Landsat 8/9 images.
Tao Jiang, Huanfeng Shen, Huifang Li, Chi Zhang, Liying Xu, Dekun Lin   +5 more
doaj   +1 more source

An Analysis of Hurricane Eyewall Ice Using a Novel Lagrangian Trajectory and Growth Model

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract Ice crystals in tropical cyclones (TCs) remain infrequently observed and difficult to model using Eulerian microphysics parameterizations. To better understand TC eyewall ice crystal processes, the Ice Crystal Trajectory Growth (ICTG) model, previously applied to an idealized squall line, was used to simulate Lagrangian ice crystal ...
Bruno S. Rojas, Anthony C. Didlake Jr., Jerry Y. Harrington, Chelsey N. Laurencin, Yunji Zhang   +4 more
wiley   +1 more source

What Sets the Tropical Cold Point in GSRMs During Boreal Winter? Overshooting Convection Versus Cirrus Lofting

Earth and Space Science
The cold point tropopause, the minimum temperature within the tropical upper troposphere‐lower stratosphere region (UTLS), significantly impacts Earth's climate by influencing the amount of water vapor entering the lower stratosphere. Understanding which
Jacqueline M. Nugent, Christopher S. Bretherton, Peter N. Blossey   +2 more
doaj   +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

How does the lifetime of detrained cirrus impact the high-cloud radiative effect in the tropics? [PDF]

Atmospheric Chemistry and Physics
The lifetime of cirrus clouds from deep convection plays an important role in determining their overall cloud radiative effect (CRE). The net CRE of cirrus clouds from deep convection is close to zero over their whole lifetime.
G. Horner, E. Gryspeerdt, E. Gryspeerdt
doaj   +1 more source