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- W2519873350 abstract "In the near-coastal regions of Antarctica, a significant fraction of the solid precipitation is removed again through sublimation, either directly from the surface or from drifting snow particles. Meteorological observations from an Automatic Weather Station (AWS 16) near the Belgian research station Princess Elisabeth in Dronning Maud Land, East-Antarctica, are used to study surface and snowdrift sublimation and to assess their impacts on both the surface mass balance and the surface energy balance. From February 2009 to September 2010, surface sublimation was found to remove 3% of the annual solid precipitation. Vertically-integrated snowdrift sublimation was estimated using three different ‘state-of-the-art’ parameterisations: on average, this process was responsible for ablating 4% of all solid precipitation at AWS 16. Application of SNOWSTORM, an atmospheric surface layer/snowdrift model, confirms that the three snowdrift sublimation parameterisations succeed in predicting snowdrift sublimation amounts. A detailed process study and investigation of the near-surface meteorological conditions are conducted to explain these anomalously low sublimation values at AWS 16. Surface & snowdrift sublimation at Princess Elisabeth Location and Methods Results a) b) Dronning Maud Land An estimation of the individual SMB components at the Belgian Antarctic station Princess Elisabeth (fig.1, 3) was done using From February 2009 till September 2010, surface and snowdrift sublimation removed a mass equivalent to 5 mm w.e. yr-1, respectively meteorological observations gathered there since February 2009 (fig.2) and following the method developed by Van Den Broeke and colleagues (2004). The core of this SMB model 8 mm w.e. yr-1 at Princess Elisabeth (fig.5a,c). The three parameterisations withstand testing by SNOWSTORM (fig.5c). Considered together, surface and snowdrift builds on the findings from Monin-Obukhov similarity theory, and contains three different parameterisations for snowdrift sublimation: sublimation have a significant impact on the SMB at Princess Elisabeth (fig.5d): sublimation removed nearly half of the total accumulation d) c)" @default.
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- W2519873350 date "2011-07-07" @default.
- W2519873350 modified "2023-09-25" @default.
- W2519873350 title "Contribution of surface and snowdrift sublimation to the surface mass balance at the Belgian Antarctic station Princess Elisabeth" @default.
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