Upper-air temperatures around Greenland: 1964-2005

Computer Science – Sound

Scientific paper

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Atmospheric Composition And Structure: Pressure, Density, And Temperature, Cryosphere: General Or Miscellaneous, Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Global Change: Regional Climate Change, Atmospheric Processes: Climatology (1616, 1620, 3305, 4215, 8408)

Scientific paper

A 42-year collection of 12h balloon soundings from six sites surrounding Greenland reveal distinct patterns of tropospheric and stratospheric temperature variability. Seasonal mean upper-air temperatures exhibit statistically significant correlations with surface air temperature records. Over the full 1964-2005 record, patterns of statistically significant tropospheric warming and stratospheric cooling are evident. Overall, the magnitude of warming decreases with height, becoming cooling in the mid-stratosphere. During the recent 12-year period (1994-2005) lacking major volcanic forcing, statistically significant warming (+2.5 K to +5 K) is evident throughout the troposphere at all sites, with seasonal changes in the +3 K to +9 K range near the surface at 1000 hPa. The recent (1994-2005) tropospheric warming has dominated the 1964-2005 lower troposphere temperature change, despite 1964-1982 upper-tropospheric cooling.

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