Eulerian-Lagrangian modelling of dispersion in a convective boundary layer

Authors
Cassiani, M Giostra, U
Citation
M. Cassiani et U. Giostra, Eulerian-Lagrangian modelling of dispersion in a convective boundary layer, NUOV CIM C, 22(5), 1999, pp. 705-714
Citations number
27
Categorie Soggetti
Space Sciences
Journal title
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-GEOPHYSICS AND SPACE PHYSICS
ISSN journal
11241896 → ACNP
Volume
22
Issue
5
Year of publication
1999
Pages
705 - 714
Database
ISI
SICI code
1124-1896(199909/10)22:5<705:EMODIA>2.0.ZU;2-W
Abstract
A simple Eulerian-Lagrangian dispersion model is proposed. The relative dis persion is treated as a Gaussian puff, whereas the puff trajectory is deriv ed by a Lagrangian particle model. Dispersion in a Convective Boundary Laye r has been simulated for three different source heights. A comparison with the classical experiments of Willis and Deardoff is proposed. An overall ag reement is obtained in modelling dispersion in a 1-dimensional CBL. It is n oteworthy that the proposed model is about 25 times faster than a Lagrangia n model.