 |
| Titel |
Reproducing mesoscale structures in flow over Hofsjökull during the FLOHOF campaign |
| VerfasserIn |
M. O. Jonassen, H. Ólafsson, J. Reuder |
| Konferenz |
EGU General Assembly 2009
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250026752
|
|
|
|
|
|
| Zusammenfassung |
| Hofsjökull glacier rises to about 1800 meters above sea level and some 1000 meters above
its surroundings in the central part of Iceland. The glacier is fairly circular and
symmetric.
During the summer of 2007, flow over and around Hofsjökull glacier in central Iceland
was observed with a network of automatic weather stations, balloons and small
unmanned aircrafts. The flow during the period has been simulated at high spatial
resolution with the numerical model WRF, based on boundary conditions from the
ECMWF.Â
Â
In general, the airflow is well reproduced. This accounts both for thermally driven
circulations as well as flow patterns that arise as a consequence of the synoptic-scale flow
impinging the glacier. A major characteristic of the summertime windstorm is upstream
deceleration and downstream acceleration. These features are reproduced, but the amplitude
of both the acceleration and the deceleration tends to be somewhat underestimated by the
numerical model. |
|
|
|
|
|
|