In-cloud Variability of LIDAR Depolarization of Polar and Midlatitude Cirrus (Articolo in rivista)

Type
Label
  • In-cloud Variability of LIDAR Depolarization of Polar and Midlatitude Cirrus (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Del Guasta M. 1, Vallar E. 2 (2003)
    In-cloud Variability of LIDAR Depolarization of Polar and Midlatitude Cirrus
    in Geophysical research letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Del Guasta M. 1, Vallar E. 2 (literal)
Pagina inizio
  • 101029 (literal)
Pagina fine
  • 101033 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 30 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • LIDAR depolarization is commonly used for discriminating liquid and ice particles. Since depolarization depends in a complicated manner on particle shape and size, in-cloud variability of depolarization has been used as an indicator of the microphysical homogeneity of cirrus. The comparison between midlatitude (Florence, Italy, 43.60°N) and polar (Dumont d’Urville, Antarctica, 66.68°S) cirrus showed a lower mean depolarization and a higher in-cloud uniformity of cloud depolarization for polar clouds in the (-80, -50°C) temperature range. A wider in-cloud variability of depolarization was observed in polar clouds at higher temperatures (-50, -30°C), reflecting the presence of supercooled liquid layers. The large in-cloud variability of depolarization in Florence cirrus could be explained with a microphysics that is dynamically and chemically perturbed as compared with the polar site. Aged jet contrails are, in fact, present in many Florence cirrus records. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 IFAC-CNR; 2 Physics Department, De La Salle University, Manila, Philippines. (literal)
Titolo
  • In-cloud Variability of LIDAR Depolarization of Polar and Midlatitude Cirrus (literal)
Abstract
  • LIDAR depolarization is commonly used for discriminating liquid and ice particles. Since depolarization depends in a complicated manner on particle shape and size, in-cloud variability of depolarization has been used as an indicator of the microphysical homogeneity of cirrus. The comparison between midlatitude (Florence, Italy, 43.60°N) and polar (Dumont d’Urville, Antarctica, 66.68°S) cirrus showed a lower mean depolarization and a higher in-cloud uniformity of cloud depolarization for polar clouds in the (-80, -50°C) temperature range. A wider in-cloud variability of depolarization was observed in polar clouds at higher temperatures (-50, -30°C), reflecting the presence of supercooled liquid layers. The large in-cloud variability of depolarization in Florence cirrus could be explained with a microphysics that is dynamically and chemically perturbed as compared with the polar site. Aged jet contrails are, in fact, present in many Florence cirrus records. (literal)
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