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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
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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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

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.

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

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