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Bilan de Masse de Surface Antarctique : Techniques de mesure et analyse critique

Abstract : The study of the cryosphere, which is one of the main active component in the global climate system, including global sea level, represents a major interest in the understanding of the current climatic changes. The polar zones are, at the moment, the world areas where the climatic changes appear in a spectacular way, and this reinforces the necessity of a better understanding of the total and surface mass balance of the ice sheets. Indeed, the Antarctic mass balance (surface and total), is not well known yet and is not correctly represented in current climatic models; this matter of fact contributes to strong uncertainties about future climate projection as well as associated potential contribution on sea level change. As a consequence, the continuation of studies on total and surface mass balance (and future change) in the different Antarctic regions, in response to the actual (and future climate), appears essential. In the framework of the present manuscript, I propose to reduce uncertainties in the Antarctic surface mass balance (SMB) estimates, inducing the possibility to optimize the reconstruction of the accumulation parameter over the continent with atmospheric general circulation (climatic) models and interpolation maps of in situ observations.
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https://tel.archives-ouvertes.fr/tel-00374371
Contributor : Olivier Magand <>
Submitted on : Wednesday, April 8, 2009 - 2:15:38 PM
Last modification on : Thursday, November 19, 2020 - 3:54:26 PM
Long-term archiving on: : Thursday, June 10, 2010 - 6:25:23 PM

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Olivier Magand. Bilan de Masse de Surface Antarctique : Techniques de mesure et analyse critique. Planète et Univers [physics]. Université Joseph-Fourier - Grenoble I, 2009. Français. ⟨tel-00374371⟩

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