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CLOUD MODEL [1 record]

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Record 1 1999-04-06

English

Subject field(s)
  • Atmospheric Physics
  • Atmospheric, Climatic and Meteorological Phenomena
  • Statistics
DEF

Representation of the physical and dynamical processes associated with clouds.

CONT

There are several serious difficulties in including clouds in models. First, cloud properties are largely subgrid-scale. Even the most regular layered cloud systems have wide variations on a 100-km scale, and boundary-layer cumulus clouds can be of a scale less than 1 km. ... Second, there is a wide variety of cloud types, each of whose radiative properties varies widely from cloud system to cloud system. ... The third, and perhaps most serious difficulty, is that processes of cloud formation and cloud radiative properties have not been satisfactorily related observationally to other meteorological processes. ... As a consequence of the limitations discussed above, the current approach of modellers is to make up some "cloud model" based on simple physical arguments, include this parameterization in a GCM simulation, and compare the resulting model cloud climatology with one or several observational climatologies.

French

Domaine(s)
  • Physique de l'atmosphère
  • Phénomènes météorologiques, climatiques et atmosphériques
  • Statistique
DEF

Représentation des processus physiques et dynamiques associés aux nuages.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Fenómenos meteorológicos, climáticos y atmosféricos
  • Estadística
DEF

Representación de los procesos físicos y dinámicos asociados con las nubes.

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