Very high resolution surface mass balance of Svalbard with the regional climate model MAR

We present climate and surface mass balance (SMB) results over Svalbard simulated by a new version of the regional climate MAR model allowing to reach ∼km resolution without highly time-consuming runs. Spitsbergen, the largest island of the Svalbard archipelago, has a very hilly topography and, as t...

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Bibliographic Details
Main Authors: Lang, Charlotte, Fettweis, Xavier
Format: Conference Object
Language:English
Published: 2015
Subjects:
Svalbard
Surface mass balance
regional climate model
Physical
chemical
mathematical & earth Sciences
Earth sciences & physical geography
Physique
chimie
mathématiques & sciences de la terre
Sciences de la terre & géographie physique
Spitsbergen
Online Access:https://orbi.uliege.be/handle/2268/192550
https://orbi.uliege.be/bitstream/2268/192550/1/lang_EGU_2015.pdf
Description
Summary:We present climate and surface mass balance (SMB) results over Svalbard simulated by a new version of the regional climate MAR model allowing to reach ∼km resolution without highly time-consuming runs. Spitsbergen, the largest island of the Svalbard archipelago, has a very hilly topography and, as the SMB strongly depends on the local topography and ice distribution, we need a high spatial resolution to accurately represent the SMB of Svalbard and its complex spatial distribution. However, higher resolution simulations are also very time consuming. That is why we have developed a new version of the MAR model in which the atmospheric module runs at a resolution of 7.5 km and the snow/ice module runs at a resolution of 3.75 km. Simulations over 1960-2014 forced by ERA show better agreement with SMB observations compared to our recent 10 km resolution recently published results.

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