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dc.contributor.author
Lopez, Maria Laura  
dc.contributor.author
Avila, Eldo Edgardo  
dc.date.available
2023-04-26T17:16:09Z  
dc.date.issued
2012-01  
dc.identifier.citation
Lopez, Maria Laura; Avila, Eldo Edgardo; Deformations of frozen droplets formed at-40C; American Geophysical Union; Geophysical Research Letters; 39; 1; 1-2012; 1805-1805  
dc.identifier.issn
0094-8276  
dc.identifier.uri
http://hdl.handle.net/11336/195490  
dc.description.abstract
The optical properties of cirrus clouds are frequently computed with respect to various ice-crystal size distributions and shapes; small ice crystals are generally considered to be quasi-spherical. This approximation can lead to significant errors in the analysis of the in-situ microphysical data and also in the theoretical study of the radiative properties of cirrus clouds. Effective size and aspect ratio of the particles are the key parameters required to determine the optical parameters that are included in modeling and prediction of climate; their parameterizations need to be as accurate as possible. In this work, laboratory experiments were conducted to study the ice crystal shape formed from the freezing of water droplets at-40°C. Liquid and ice clouds were separately formed and sampled in a cloud chamber at-30 and-40°C, respectively. The effective water droplet diameter ranged from 8 to 20 μm, while the effective ice particle diameter ranged from 8 to 30 m. The average effective diameters were 11 μm for water drops and 14 μm for frozen droplets. The deformation of the frozen droplets was evident during inspection under microscope; bulges and spikes protuberances were found in many of the observed ice particles. The results show that the aspect ratio of the frozen droplets is 1.2. Copyright 2012 by the American Geophysical Union.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Geophysical Union  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
SMALL ICE CRYSTALS  
dc.subject
FROZEN DROPS  
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ASPECT RATIO  
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CRYSTAL SHAPES  
dc.subject.classification
Meteorología y Ciencias Atmosféricas  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Deformations of frozen droplets formed at-40C  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-04-24T15:08:41Z  
dc.identifier.eissn
1944-8007  
dc.journal.volume
39  
dc.journal.number
1  
dc.journal.pagination
1805-1805  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Lopez, Maria Laura. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina  
dc.description.fil
Fil: Avila, Eldo Edgardo. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina  
dc.journal.title
Geophysical Research Letters  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2011GL050185  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2011GL050185