THE UBL/CLU-ESCOMPTE EXPERIMENT : DESCRIPTION AND FIRST RESULTS

摘要

The UBL/CLU-Escompte experiment aimed at documenting the four-dimensional structure of the urban boundary layer in connection with the urban canopy thermodynamics during a summer period of low wind and breeze conditions, from June 5 to July 15, 2001. The objective was mainly to construct a data base allowing to test urban energy exchange schemes and high resolution meteorological and chemistry-transport models. The project took advantage of the large experimental set-up of the campaign ESCOMPTE (http:∥medias.obs-mip.fr/escompte) over the Berre-Marseille area, especially as concerns remote sensing from ground, airborne measurements, and the intense documentation of the regional meteorology. UBL/CLU appeared thus as an "associated project" of ESCOMPTE, with an additional experimental set-up to document the fine scale dynamics and thermodynamics of the urban atmosphere over the Marseille area, situated at Mediterranean coast, and involving more than one million of inhabitants. While the ESCOMPTE campaign is described by the poster [P4.2], several participations in UBL/CLU are presented at this conference, and referred in this paper by their communication number between square brackets