Results 71 to 80 of about 4,670 (221)

Measurements of Terminal Velocities of Cirrus Clouds in the Upper Trosphere

EPJ Web of Conferences, 2016
Cirrus clouds are composed of ice crystals condensed from humidity due to low temperature condition in the upper atmosphere. The microphysics of cirrus clouds including sizes and shapes of ice particles are not well understood but are important in ...
Nee Jan Bai, Chen W. N., Chiang C. W., Das S.K.   +3 more
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

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

Geometrical and optical properties of cirrus clouds

, 2023
Statistics of geometrical and optical properties of cirrus clouds from 5 years of Micro Pulse Lidar measurements. These data are from 203 high-altitude cirrus clouds, to which the two-way transmittance method has been properly ...
Gil Diaz, Cristina
core   +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

Ice nucleation under cirrus cloud conditions [PDF]

, 2012
Cirrus are thin upper tropospheric clouds that are composed entirely of ice particles. Due to their extensive coverage of the Earth’s surface, they have a significant impact on the Earth’s radiative balance.
Wilson, Theodore W
core  

Spatial Heterogeneity and Inhomogeneity of Cirrus Microphysical Properties on Kilometer Spatial Scales

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Previous studies reporting the spatial inhomogeneity and heterogeneity of cirrus cloud properties have primarily been case studies derived from relatively small data sets. This study evaluates the spatial heterogeneity and inhomogeneity of cirrus bulk microphysical properties using ∼60 hr of in situ measurements from eight field campaigns. The
John D’Alessandro, Odran Sourdeval, Martina Krämer   +2 more
wiley   +1 more source

Height of Cirrus Cloud [PDF]

Nature, 1872
IT would be interesting if any of the readers of NATURE could give some information respecting the usual height of cirrus clouds. Mr. Clement Ley, in his work, “The Laws of the Winds,” states—“The time occupied by these clouds in passing from the zenith to 45°, or the contrary, furnishes us with a standard of measurement which is both convenient for ...
openaire   +2 more sources

Oxalic acid as a heterogeneous ice nucleus in the upper troposphere and its indirect aerosol effect

, 2006
Zobrist B, Marcolli C, Koop T, et al. Oxalic acid as a heterogeneous ice nucleus in the upper troposphere and its indirect aerosol effect. ATMOSPHERIC CHEMISTRY AND PHYSICS.
Koop, Thomas, Cziczo, Daniel J., Corti, Thierry, Murphy, D. M., Fueglistaler, Stephan, B. Zobrist, P. K. Hudson, Koop, T., Hudson, P.K., Koop, Thomas ; https://orcid.org/, Krieger, U. K., Corti, T., Lohmann, Ulrike, Thomson, D. S., U. K. Krieger, Marcolli, C., D. S. Thomson, D. J. Cziczo, T. Corti, T. Peter, U. Lohmann, Lohmann, U., Peter, Thomas, T. Koop, Luo, Beiping P., Murphy, Daniel M., A. A. Zardini, Krieger, Ulrich; id_orcid, Luo, B. P., Hudson, P. K., Thomson, D.S., B. P. Luo, Zardini, A., Cziczo, D. J., Zardini, A. A., Zardini, Alessandro A., D. M. Murphy, C. Marcolli, S. Fueglistaler, Peter, T., Marcolli, Claudia, Zobrist, Bernhard, Zobrist, B., Fueglistaler, S.   +43 more
core   +1 more source

Characteristics of Cirrus Clouds from Different Formation Mechanisms

Journal of Remote Sensing
Cirrus clouds, formed through various atmospheric processes, vary in distribution and microphysical properties, playing distinct roles in regulating Earth’s radiative balance.
Xiaoyu Hu, Lang Zhang, Jinming Ge, Leyi Wang, Xiaoyu Huang, Jiajing Du, Qingyu Mu, Bochun Liu, Hui Wang   +8 more
doaj   +1 more source