Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2739
AuthorsDel Guasta, M.* 
Morandi, M.* 
Stefanutti, L.* 
Balestri, S.* 
Castagnoli, F.* 
Kyro, E.* 
Rummukainen, M.* 
Rizi, V.* 
Masci, F.* 
Stein, B.* 
Mielke, B.* 
Matthey, R.* 
TitleObservation of Liquid Particles at -65° in a Polar Cirrus
Issue Date6-Nov-1995
URIhttp://hdl.handle.net/2122/2739
KeywordsPolar cirrus
Subject Classification01. Atmosphere::01.01. Atmosphere::01.01.99. General or miscellaneous 
AbstractIt is widely accepted that pure water cannot exist as a liquid below about -40°. Theoretical and laboratory studies confirm this behavior for pure water. Liquid droplets have been seldom observed in cirrus clouds down to about -50°C. The LIDAR technique can help to find out unusual supercooled clouds, when the depolarization technique is implemented: the presence of non-depolarizing layers in a cloud is indicative of a very special scattering media: scattering particles must have a symmetry axis oriented along the laser beam. This is possible either with spherical droplets or ice plates horizontally oriented. In this work, a -65°C cold, non-depolarizing cloud observed in Finland is studied, concluding that supercooled droplets are responsible for the absence of depolarization in most of the cloud. This is the coldest supercooled cirrus ever observed.
Appears in Collections:Conference materials

Files in This Item:
File Description SizeFormat 
Proc_6_work_It_res_ant_atmos_1995_247-252.pdf2.3 MBAdobe PDFView/Open
Show full item record

Page view(s)

74
Last Week
0
Last month
checked on Jun 27, 2017

Download(s)

73
checked on Jun 27, 2017

Google ScholarTM

Check