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| Titel |
Drifting snow measurements on the Greenland Ice Sheet and their application for model evaluation |
| VerfasserIn |
J. T. M. Lenaerts, C. J. P. P. Smeets, K. Nishimura, M. Eijkelboom, W. Boot, M. R. Broeke, W. J. Berg |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 8, no. 2 ; Nr. 8, no. 2 (2014-04-30), S.801-814 |
| Datensatznummer |
250116101
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| Publikation (Nr.) |
 copernicus.org/tc-8-801-2014.pdf |
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| Zusammenfassung |
| This paper presents autonomous drifting snow observations performed on the
Greenland Ice Sheet in the fall of 2012. High-frequency snow particle counter
(SPC) observations at ~ 1 m above the surface provided drifting snow
number fluxes and size distributions; these were combined with meteorological
observations at six levels. We identify two types of drifting snow events:
katabatic events are relatively cold and dry, with prevalent winds from the
southeast, whereas synoptic events are short lived, warm and wet.
Precipitating snow during synoptic events disturbs the drifting snow
measurements. Output of the regional atmospheric climate model RACMO2, which
includes the drifting snow routine PIEKTUK-B, agrees well with the observed
near-surface climate at the site, as well as with the frequency and timing of
drifting snow events. Direct comparisons with the SPC observations at 1 m
reveal that the model overestimates the horizontal snow transport at this
level, which can be related to an overestimation of saltation and the typical
size of drifting snow particles. |
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