Upper-air temperatures around Greenland: 1964-2005

Jason E. Box, Ariel E. Cohen

Publikation: Bidrag til tidsskriftArtikelForskningpeer review

32 Citationer (Scopus)

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.

OriginalsprogEngelsk
ArtikelnummerL12706
Antal sider4
TidsskriftGeophysical Research Letters
Vol/bind33
Udgave nummer12
DOI
StatusUdgivet - jun. 2006
Udgivet eksterntJa

Programområde

  • Programområde 5: Natur og klima

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