Implementation of a micro-physical scheme for warm clouds in the meteorological model 'MERCURE': Application to cooling tower plumes and to orographic precipitation
Creators
- Bouzereau, Emmanuel
- Universite Paris VI (France)
- Groupe Meteorologie Appliquee et Environnement Atmospherique, EDF R et D (France)
- Centre d'Enseignement et de Recherche en Environnement Atmospherique - CEREA, Ecole des Ponts Paris Tech, 6-8 avenue Blaise Pascal, Cite Descartes, Champs-sur-Marne, 77455 Marne la Vallee Cedex 2 (France)
Description
A two-moment semi-spectral warm micro-physical scheme has been implemented inside the meteorological model 'MERCURE'. A new formulation of the buoyancy flux (v'>) is proposed, which is coherent with the corrigendum of Mellor (1977) but differs from Bougeault (1981). The non-precipitating cloud microphysics is validated by comparing the numerical simulations of fifteen cases of cooling tower plumes with data from a measurement campaign in Bugey in 1980. Satisfactory results are obtained on the plumes shape, on the temperature and vertical velocity fields and on the droplets spectrums, although the liquid water contents tend to be overestimated. The precipitating cloud microphysics is tested by reproducing the academical cases of orographic precipitation of Chaumerliac et al. (1987) and Richard and Chaumerliac (1989). The simulations allow a check of the action of different micro-physical terms. (author)
Abstract (French)
modele meteorologique 'MERCURE'. Une nouvelle ecriture du flux de flottabilite (v'>) est proposee; elle est coherente avec le corrigendum de Mellor (1977) mais differe de Bougeault (1981). La microphysique nuageuse est validee par des simulations numeriques d'une quinzaine de cas de panaches d'aerorefrigerants qui sont comparees aux donnees provenant d'une campagne de mesures realisees au Bugey en 1980. Des resultats satisfaisants sont obtenus sur la forme du panache, sur les champs de temperature et de vitesse verticale et sur les spectres de gouttelettes; cependant les simulations ont tendance a surestimer le contenu en eau liquide. Le schema microphysique est aussi teste sur les simulations de cas academiques de precipitations orographiques de Chaumerliac et al. (1987) et Richard et Chaumerliac (1989). Lors des simulations, nous retrouvons l'action de differents termes microphysiques. (auteur)Files
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Additional details
Additional titles
- Original title (French)
- Representation des nuages chauds dans le modele meteorologique 'MERCURE': Application aux panaches d'aerorefrigerants et aux precipitations orographiques
Identifiers
Publishing Information
- Imprint Pagination
- 350 p.
- Report number
- FRNC-TH--9920
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 49015644
- Subject category
- S42: ENGINEERING; S54: ENVIRONMENTAL SCIENCES; S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ATMOSPHERIC CIRCULATION; ATMOSPHERIC PRECIPITATIONS; BUGEY-1 REACTOR; CLOUDS; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; COOLING TOWERS; DROPLETS; EVAPORATION; INTERPOLATION; M CODES; METEOROLOGY; NUCLEATION; PLUMES; SENSITIVITY ANALYSIS; TEMPERATURE DISTRIBUTION; VALIDATION; VAPOR CONDENSATION; VELOCITY; WATER SATURATION
- Descriptors DEC
- CARBON DIOXIDE COOLED REACTORS; COMPUTER CODES; EVALUATION; GAS COOLED REACTORS; GCR TYPE REACTORS; GRAPHITE MODERATED REACTORS; MATHEMATICAL SOLUTIONS; NUMERICAL SOLUTION; PARTICLES; PHASE TRANSFORMATIONS; POWER REACTORS; REACTORS; SATURATION; SIMULATION; TESTING; THERMAL REACTORS
Optional Information
- Notes
- 116 refs.; Available from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS web site for current contact and E-mail addresses: http://www.iaea.org/inis/Contacts/