| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-21 20:52 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Winter and summer blocking variability in the North Atlantic region. Evidence from long-term observational and proxy data from southwestern Greenland
Authors:
Norel Rimbu(1,2) and Gerrit Lohmann(1)
Affiliation:
(1) Bucharest University, Faculty of Physics, Department of Atmosphere and Earth Science, Bucharest-Magurele, Romania, (2) AWI, Bremerhaven, Germany
E-mail
norelrimbu@yahoo.com
Keywords:
atmospheric blocking, ice cores, Greenland
Abstract:
We investigate the relationship between the North Atlantic atmospheric blocking and winter and summer temperature variability as derived from long-term observational and proxy records from southwestern Greenland. It is shown that winter warm (cold) conditions in southwestern Greenland are related with high(low) blocking activity in the Greenland-Scandinavia region. Furthermore, the duration of blocking evens in the Atlantic region during warm years in the southwestern Greenland is significantly higher than during cold years in this region. An index for the North Atlantic blocking is significantly correlated with an oxygen isotope record from Greenland ice cores suggesting a possible reconstruction of blocking variability in this region during the last millennium. During summer high low) blocking activity n the Euro-Atlantic region is associated with cold (warm) conditions in southwestern Greenland. The duration of summer blocking evens in the Euro-Atlantic region is significantly higher during cold elative to warm periods in southwestern Greenland. E suggest that high resolution emperature records from southwestern Greenland can be used to reconstruct blocking activity in the North Atlantic region during pre-instrumental period.
|
|
|
|