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Polar stratospheric clouds observed at Eureka (80°N, 86°W) in the Canadian Arctic during the 1994/1995 winter
Author(s) -
Nagai T.,
Uchino O.,
Itabe T.,
Shibata T.,
Mizutani K.,
Fujimoto T.
Publication year - 1997
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/97gl02094
Subject(s) - polar , atmospheric sciences , frost (temperature) , arctic , the arctic , stratosphere , lidar , environmental science , sulfuric acid , climatology , meteorology , geology , oceanography , physics , chemistry , remote sensing , astronomy , inorganic chemistry
A lidar system was installed at Eureka (80°N, 86°W) in January 1993 to monitor stratospheric aerosols and polar stratospheric clouds (PSCs). In the winter of 1994/1995, PSCs were found at altitudes of around 20km in the middle of December. In early January 1995, PSCs were observed at altitudes from 14.3 km to 16 km, where the temperature ranged from 199K to 202K. Since this range is higher than the frost point of nitric acid trihydrate (NAT), the particles in these PSCs may have consisted of sulfuric acid tetrahydrate (SAT).