Further work of
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Workplan
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The plan for further work for Working Group 2: An experiment on the urban boundary layer (UBL) is being planned
during the large French photochemistry experimental campaign ESCOMPTE (June-July
2001). The UBL-Escompte experiment is concerned with urban meteorology and
remote sensing by satellite, encouraged by the Antwerp expert meeting
discussions and recommendations. The WG2 members are keen to help in planning
this experiment and to use its data for testing/validating the existing schemes
and models. Another opportunity to stimulate forthcoming work of WG2 will be
BUBBLE, the Basle Urban Boundary Layer Experiment, already accepted by the Swiss
COST financial authorities, a joint action of six Swiss institutes, lead by
Mathias Rotach. The urban boundary layer at Basle will be investigated by a
one-year monitoring of near-surface turbulence characteristics as well as the
UBL's vertical structure. A mesoscale numerical model will be used to validate
and improve urban surface parameterisations. A recent COST 715 Management Committee Meeting in Greenwich,
UK, decided to support exchange amongst the working groups by planning and
conducting joint workshops. In May 2001, in close co-operation with BUBBLE,
WG1 and WG2 will conduct a workshop on boundary layer parameterisations at
Zurich, followed by a common WG2 and WG3 workshop on mixing heights in urban
areas, with special emphasis on peak pollution episodes, scheduled for
autumn 2001 in Toulouse.
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