Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: Frezzotti, M.*
Pourchet, M.*
Flora, O.*
Gandolfi, S.*
Gay, M.*
Urbini, S.*
Vincent, C.*
Becagli, S.*
Gragnani, R.*
Proposito, M.*
Severi, M.*
Traversi, R.*
Udisti, R.*
Fily, M.*
Title: New estimations of precipitation and surface sublimation in East Antarctica from snow accumulation measurements
Title of journal: Climate Dynamics
Series/Report no.: 7 / 23 (2004)
Publisher: Springer - Verlag
Issue Date: Dec-2004
DOI: 10.1007/s00382-004-0462-5
Keywords: East Antarctica
Surface Mass Balance
Snow accumulation
Abstract: Surface mass balance (SMB) distribution and its temporal and spatial variability is an essential input parameter in mass balance studies. Different methods were used, compared and integrated (stake farms, ice cores, snow radar, surface morphology, remote sensing) at eight sites along a transect from Terra Nova Bay (TNB) to Dome C (DC) (East Antarctica), to provide detailed information on the SMB. Spatial variability measurements show that the measured maximum snow accumulation (SA) in a 15 km area is well correlated to firn temperature. Wind-driven sublimation processes, controlled by the surface slope in the wind direction, have a huge impact (up to 85% of snow precipitation) on SMB and are significant in terms of past, present and future SMB evaluations. The snow redistribution process is local and has a strong impact on the annual variability of accumulation. The spatial variability of SMB at the kilometre scale is one order of magnitude higher than its temporal variability (20–30%) at the centennial time scale. This high spatial variability is due to wind-driven sublimation. Compared with our SMB calculations, previous compilations generally over-estimate SMB, up to 65% in some areas.
Appears in Collections:02.02.02. Cryosphere/atmosphere Interaction
02.02.06. Mass balance
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
CD_Frezzotti_2004.pdfmain article485.06 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA