HIGH RESOLUTION NWP MODELLING OF THE ATMOSPHERIC CONDITIONS ACROSS VATNAJÖKULL (ICELAND)

Abstract: We investigate the skill of an operational NWP model (HIRLAM) to reproduce the near-surface atmospheric conditions across the Vatnajökull Ice Sheet (Iceland). The study focuses on a mesoscale glaciometeorological observation campaign of summer 1996, which provided a wealth of meteorologica...

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Bibliographic Details
Main Authors: Laura Rontu, Friedrich Obleitner, Er Tijm, Christoph Zingerle, Stefan Gollvik
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
HIRLAM
parametrization
Vatnajökul Ice Cap
mass and energy balance
Vatnajökull
glacier
Ice cap
Ice Sheet
Iceland
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.618.8431
http://www.cnrm.meteo.fr/icam2007/ICAM2007/extended/manuscript_143.pdf
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Summary:Abstract: We investigate the skill of an operational NWP model (HIRLAM) to reproduce the near-surface atmospheric conditions across the Vatnajökull Ice Sheet (Iceland). The study focuses on a mesoscale glaciometeorological observation campaign of summer 1996, which provided a wealth of meteorological and glaciological data. The modelling concept is based on nesting fine-scale (2.8km horizontal resolution) hydrostatic HIRLAM experiments into the downscaled ERA40 analyses. The results of a reference run are compared to a subset of observations following a height transect across Brei-damerkurjökull, a southern outlet glacier of Vatnajökull, which reveals some severe deficiencies regarding the treatment of the surface energy balance.

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