Resumé
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.
Originalsprog | Engelsk |
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Artikelnummer | L12706 |
Antal sider | 4 |
Tidsskrift | Geophysical Research Letters |
Vol/bind | 33 |
Udgave nummer | 12 |
DOI | |
Status | Udgivet - jun. 2006 |
Udgivet eksternt | Ja |
Programområde
- Programområde 5: Natur og klima