Computer Science – Sound
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3518706v&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 18, CiteID L18706
Computer Science
Sound
10
Atmospheric Processes: Polar Meteorology, Atmospheric Processes: Radiative Processes, Oceanography: Physical: Ice Mechanics And Air/Sea/Ice Exchange Processes (0700, 0750, 0752, 0754), Global Change: Atmosphere (0315, 0325), Global Change: Cryospheric Change (0776)
Scientific paper
Meteorological observations were made at the drifting ice station Tara in the central Arctic Ocean from 23 March to 19 September 2007, constituting a unique data set from the season preceding the record-low sea ice extent. Comparisons of the Tara data with observations at the Russian drifting ice stations in 1937-1938 and 1950-1991 and at SHEBA in 1998 indicated that at Tara and SHEBA the atmospheric transmissivity for shortwave radiation was smaller than at the Russian stations, suggesting a higher cloud fraction or optical thickness. Compared to the mean conditions at the Russian stations, at Tara the melting season was twice as long and in April the 2-m air temperature was 7.0°C higher, but in July the 2-m temperature difference disappeared. The Tara tethersonde sounding data suggest that the air temperature at the altitudes of 200-1000 m was approximately 1°C higher than the mean of 1954-1985.
Jaagus Jaak
Jakobson Erko
Palo Timo
Vihma Timo
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