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Spatial and Temporal Variability in Summer Snow Pack in the Dronning Maud Land, Antarctica : Volume 4, Issue 3 (22/07/2010)

By Vihma, T.

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Book Id: WPLBN0003988855
Format Type: PDF Article :
File Size: Pages 44
Reproduction Date: 2015

Title: Spatial and Temporal Variability in Summer Snow Pack in the Dronning Maud Land, Antarctica : Volume 4, Issue 3 (22/07/2010)  
Author: Vihma, T.
Volume: Vol. 4, Issue 3
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Pirazzini, R., Mattila, O., Johansson, M. M., & Vihma, T. (2010). Spatial and Temporal Variability in Summer Snow Pack in the Dronning Maud Land, Antarctica : Volume 4, Issue 3 (22/07/2010). Retrieved from http://www.ebooklibrary.org/


Description
Description: Finnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, Finland. Snow temperature, density, and layering were measured in four summers in the Dronning Maud Land, Antarctica. Data from a 310-km-long transect showed that the most homogeneous snow pack located in the Riiser-Larsen Ice Shelf, while horizontal gradients in snow density, temperature, and hardness were larger in the escarpment region. In the local scale, day-to-day temporal variability dominated the standard deviation of snow temperature, while the diurnal cycle was next important, and horizontal variability in the scale of 0.4 to 10 m was the smallest component. The day-to-day and total small-scale variability decreased exponentially with depth with an e-folding depth at 0.25 to 0.30 m. Snow temperature depended on the cloud cover in the uppermost 0.30 m and snow density in the uppermost 0.10 m. Both in the intra-pit and transect scales, the ratio of horizontal to temporal variability increased with depth. In the intra-pit scale the temporal variability in snow density exceeded the horizontal variability throughout the uppermost 0.50 m layer, but in the 100-km scale only in the uppermost centimetres. The horizontal standard deviation of snow density increased rapidly between the scales of 0.4 and 2 m, and much more gradually from 101 to 102 m.

Summary
Spatial and temporal variability in summer snow pack in the Dronning Maud Land, Antarctica

Excerpt
Albert, M. R. and McGilvary, W. R.: Thermal effects due to air flow and vapour transport in dry snow, J. Glaciol., 38, 273–281, 1992.; Bakermans, L. and Jamieson, B.: Swarm: a simple regression model to estimate near-surface snowpack warming for back-country avalanche forecasting, Cold Reg. Sci. Technol., 59, 133–142, 2009.; Brandt, R. E. and Warren, S. G.: Temperature measurements and heat transfer in near-surface snow at the South Pole, J. Glaciol., 43, 339–351, 1997.; Cheng, B., Launiainen, J., and Vihma, T.: Modelling of superimposed ice formation and sub-surface melting in the Baltic Sea, Geophysica, 39, 31–50, 2003.; Cheng, B., Zhang, Z., Vihma, T., Johansson, M., Bian, L., Li, Z., and Wu, H.: Model experiments on snow and ice thermodynamics in the Arctic Ocean with CHINARE2003 data, J. Geophys. Res., 113, C09020, doi:10.1029/2007JC004654, 2008a.; Cheng, B., Vihma, T., Zhang, Z., Li, Z., and Wu, H.: Snow and sea ice thermodynamics in the Arctic: model validation and sensitivity study against SHEBA data, Chinese Journal of Polar Science, 19, 108–122, 2008b.; Colbeck, S.: Layered character of snow covers, Rev. Geophys., 29, 81–96, 1991.; Colbeck, S. C., Akitaya, E., Armstrong, R., Gubler, H., Lafeuille, J., Lied, K., McClung, D., and Morris, E.: International classification for seasonal snow on the ground, International Commision on Snow and Ice of the International Association of Scientific Hydrology, World Data Centre – Association for Glaciology, Univeristy of Colorado, Boulder, CO, 23 pp., 1990.; Courville, Z. R., Albert, M. R., Fahnestock, M. A., Cathles IV, L. M., and Shuman, C. A.: Impacts of an accumulation hiatus on the physical properties of firn at a low-accumulation polar site, J. Geophys. Res., 112, F02030, doi:10.1029/2005JF000429, 2007.; Dadic, R., Schneebeli, M., Lehning, M., Hutterli, M. A., and Ohmura, A.: Impact of the microstructure of snow on its temperature: a model validation with measurements from Summit, Greenland, J. Geophys. Res., 113, D14303, doi:10.1029/2007JD009562, 2008.; Eisen, O., Frezzotti, M., Genthon, C., et al.: Ground-based measurements of spatial and temporal variability of snow accumulation in East Antarctica, Rev. Geophys., 46, RG2001, doi:10.1029/2006RG000218, 2008.; Frezzotti, M., Gandolfi, S., La Marca, F., and Urbini, S.: Snow dunes and glazed surfaces in Antarctica: new field and remote-sensing data, Ann. Glaciol., 34, 81–88, 2002a.; Frezzotti, M., Gandolfi, S., and Urbini, S.: Snow megadunes in Antarcitca: sedimentary structure and genesis, J. Geophys Res., 107, 4344, doi:10.1029/2001JD000673, 2002b.; 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., and Fily, M.: New estimations of precipitation and surface sublimation in East Antarctica from snow accumulation measurements, Clim. Dynam., 23, 803–813, doi:10.1007/s

 

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