Table of Contents
ISRN Meteorology
Volume 2012 (2012), Article ID 675820, 12 pages
http://dx.doi.org/10.5402/2012/675820
Research Article

First Observations of Energy Budget and Bulk Fluxes at Ny Ålesund (Svalbard) during a 2010 Transition Period as Analyzed with the BEAR Station

1LATMOS (ESTER), 11 Boulevard D'Alembert, 78280 Guyancourt, France
2LOCEAN, Université Pierre et Marie Curie, Tour 45, 4 Place Jussieu, 75005 Paris, France
3DT INSU, 4 place Aristide Briand, 92195 Meudon Cedex, France
4Centre d'Etude de la Neige (Meteo France), 1441 rue de la Piscine, Grenoble Cedex 9, France
5Istituto di Scienze dell'Atmosfera e del Clima (ISAC), Consiglio Nazionale delle Ricerche (CNR), Via Fosso del Cavaliere, 100 00133 Rome, Italy
6Institute of Building Climatology, Faculty of Architecture TU Dresden, Zellescher Weg 17, 01062 Dresden, Germany

Received 30 January 2012; Accepted 13 March 2012

Academic Editors: D. Moreira and A. Saha

Copyright © 2012 Alain Weill et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A small-size meteorological mast, BEAR (Budget of Energy for Arctic regions) has been developed as a part of a new autonomous buoy for monitoring the sea ice mass balance. BEAR complements observations of the thickness and thermodynamic properties of the ice/snow pack determined by the so-called Ice-T (Ice-Thickness) buoy, giving access to bulk fluxes and energy budget at the surface, using meteorological measurements. The BEAR mast has been tested with success during ten days in April-May 2010 at Ny Alesund, in the Svalbard archipelago (Norway) showing that meteorological data were close to measurements at the same level of the Italian Climate Change Tower (CCT) from the ISAC-CNR. A discussion is undertaken on bulk fluxes determination and uncertainties. Particularly, the strategy to systematically use different relevant fluxes parameterizations is pointed out to explore flux range uncertainty before to analyze energy budget. Net radiation, bulk fluxes and energy budget are estimated using as average 10 minutes, 24 hours and the ten days of the experiment. The observation period was very short, but we observe a spring transition when the net radiation begins to warm the surface while the very small turbulent heat flux cools the surface.