Characteristics of the boundary layerat Ny-Ålesund in the Arctic during the ARTIST field experiment

A preliminary analysis of boundary layer data acquired during the Arctic Radiation and Turbulence Interaction Study Experiment (ARTIST) at Ny-Ålesund (Spitzbergen) in 1998 is presented. As expected, the wind fi eld and the thermal structure of the boundary layer are strongly infl uenced by the katab...

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Bibliographic Details
Published in:Annals of Geophysics
Main Authors: T. Georgiadis, A. Maurizi, G. Mastrantonio, A. Pietro Viola, S. Argentini, M. Nardino
Format: Article in Journal/Newspaper
Language:English
Published: Istituto Nazionale di Geofisica e Vulcanologia (INGV) 2003
Subjects:
Arctic
sodar
planetary boundary layer
turbulence
Meteorology. Climatology
QC851-999
Geophysics. Cosmic physics
QC801-809
Ny-Ålesund
Kongsfjord*
Kongsfjorden
Ny Ålesund
Spitzbergen
Online Access:https://doi.org/10.4401/ag-3414
https://doaj.org/article/bb1673bf79894550be6c167fec9509c3
Description
Summary:A preliminary analysis of boundary layer data acquired during the Arctic Radiation and Turbulence Interaction Study Experiment (ARTIST) at Ny-Ålesund (Spitzbergen) in 1998 is presented. As expected, the wind fi eld and the thermal structure of the boundary layer are strongly infl uenced by the katabatic fl ow blowing along the Kongsfjorden. In particular, if the large scale circulation has a component along the same direction, the resulting low level wind reaches velocities comparable with geostrophic wind. Stable to neutral conditions occurred most of the time, sustaining inversion or spiky layers respectively, depending on the wind intensity. The behaviour of some micrometeorological parameters was examined in relation to the general fl ow pattern and the characteristics of this area. The highest values of surface sensible heat fl ux (with negative sign) were observed during daytime, in presence of forced convection, due to the transfer of warmer upper layer air into the surface layer.

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