TY - CONF
TI - MONITORING ICE CRYSTALS CLOUDS: INVESTIGATION OF THE LIDAR
DEPOLARIZATION RATIOS
AU - Voudouri, Kalliopi-Artemis
AU - Giannakaki, Elina
AU - Komppula, Mika and
AU - Gialitaki, Anna
AU - Natsis, Athanasios
AU - Balis, Dimitris
PY - 2020
SP - null
PB - E D P SCIENCES
T2 - 29TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 29)
TODO - 10.1051/epjconf/202023708013
TODO - null
TODO - A cirrus cloud dataset from a groundbased lidar in a sub-arctic station
is analyzed in terms of the particle depolarization ratio. The
depolarization values -delta- showed a broad distribution, ranging
between 0.25 and 0.7, with a mean value of 0.38 +/- 0.07. This
variability is examined in correlation with temperature dependencies and
the cirrus optical depth. Depolarization values greater than 0.45 are
observed from temperatures between -60 degrees C and -40 degrees C,
where horizontally oriented planar ice crystals are to be expected. Two
case studies are also, discussed and analyzed in terms of depolarization
height dependence.
ER -