 |
| Titel |
Investigating the impact of atmospheric blocking on temperature extremes across Europe using an objective index |
| VerfasserIn |
Lukas Brunner, Andrea Steiner, Jana Sillmann |
| Konferenz |
EGU General Assembly 2017
|
| Medientyp |
Artikel
|
| Sprache |
en
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250148048
|
| Publikation (Nr.) |
 EGU/EGU2017-12277.pdf |
|
|
|
|
|
| Zusammenfassung |
| Atmospheric blocking is a key contributor to European temperature extremes. It leads to
stable, long-lasting weather patterns, which favor the development of cold and warm spells.
The link between blocking and such temperature extremes differs significantly across Europe.
In northern Europe a majority of warm spells are connected to blocking, while cold
spells are suppressed during blocked conditions. In southern Europe the opposite
picture arises with most cold spells occurring during blocking and warm spells
suppressed.
Building on earlier work by Brunner et al. (2017) this study aims at a better understanding of
the connection between blocking and temperature extremes in Europe. We investigate cold
and warm spells with and without blocking in observations from the European daily
high-resolution gridded dataset (E-OBS) from 1979 to 2015. We use an objective extreme
index (Russo et al. 2015) to identify and compare cold and warm spells across Europe. Our
work is lead by the main question: Are cold/warm spells coinciding with blocking different
from cold/warm spells during unblocked conditions in regard to duration, extend, or
amplitude? Here we present our research question and the study setup, and show first results
of our analysis on European temperature extremes.
Brunner, L., G. Hegerl, and A. Steiner (2017): Connecting Atmospheric Blocking
to European Temperature Extremes in Spring. J. Climate, 30, 585–594, doi:
10.1175/JCLI-D-16-0518.1.
Russo, S., J. Sillmann, and E. M. Fischer (2015): Top ten European heatwaves since 1950 and
their occurrence in the coming decades. Environ. Res. Lett. 10.12, S. 124003. doi:
10.1088/1748-9326/10/12/124003. |
|
|
|
|
|
|