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

• Main Authors: Argentini, S., Pietro Viola, A., Mastrantonio, G., Maurizi, A., Georgiadis, T., Nardino, M.
• Other Authors: Argentini, S.; Istituto di Scienze dell'Atmosfera e del Clima (ISAC), CNR, Roma, Italy, Pietro Viola, A.; Istituto di Scienze dell'Atmosfera e del Clima (ISAC), CNR, Roma, Italy, Mastrantonio, G.; Istituto di Scienze dell'Atmosfera e del Clima (ISAC), CNR, Roma, Italy, Maurizi, A.; Istituto di Biometeorologia (IBIMET), CNR, Bologna, Italy, Georgiadis, T.; Istituto di Biometeorologia (IBIMET), CNR, Bologna, Italy, Nardino, M.; Istituto di Biometeorologia (IBIMET), CNR, Bologna, Italy, Istituto di Scienze dell'Atmosfera e del Clima (ISAC), CNR, Roma, Italy, Istituto di Biometeorologia (IBIMET), CNR, Bologna, Italy
• Format: Article in Journal/Newspaper
• Language: English
• Published: INGV 2003
• Subjects: Arctic; sodar; planetary boundary layer; turbulence; 01. Atmosphere::01.01. Atmosphere::01.01.04. Processes and Dynamics; 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous; Ny-Ålesund; Kongsfjord*; Kongsfjorden; Ny Ålesund; Spitzbergen
• Online Access: http://hdl.handle.net/2122/952

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. Published JCR Journal open