Parametrization (atmospheric modeling) (original) (raw)
Parameterization in a weather or climate model in the context of numerical weather prediction is a method of replacing processes that are too small-scale or complex to be physically represented in the model by a simplified process. This can be contrasted with other processes—e.g., large-scale flow of the atmosphere—that are explicitly resolved within the models. Associated with these parameterizations are various parameters used in the simplified processes. Examples include the descent rate of raindrops, convective clouds, simplifications of the atmospheric radiative transfer on the basis of atmospheric radiative transfer codes, and cloud microphysics. Radiative parameterizations are important to both atmospheric and oceanic modeling alike. Atmospheric emissions from different sources with
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| dbo:abstract | La paramétrisation, dans le contexte de la prévision numérique du temps, est une méthode de remplacement des processus trop petits ou complexes pour être physiquement représentée dans un modèle numérique par un processus simplifié. Cela s'oppose aux processus qui peuvent être résolus par la maille de la grille du modèle, par exemple un écoulement atmosphérique à grande échelle, qui sont explicitement résolus. Les exemples incluent la vitesse de chute des gouttes de pluie, les nuages convectifs, les simplifications du transfert radiatif atmosphérique et la microphysique des nuages. Les paramétrisations radiatives jouent un rôle important dans la modélisation atmosphérique et océanique. Les émissions atmosphériques de différentes sources ponctuelles doivent également être paramétrées pour déterminer leur impact sur la qualité de l'air. (fr) Parameterization in a weather or climate model in the context of numerical weather prediction is a method of replacing processes that are too small-scale or complex to be physically represented in the model by a simplified process. This can be contrasted with other processes—e.g., large-scale flow of the atmosphere—that are explicitly resolved within the models. Associated with these parameterizations are various parameters used in the simplified processes. Examples include the descent rate of raindrops, convective clouds, simplifications of the atmospheric radiative transfer on the basis of atmospheric radiative transfer codes, and cloud microphysics. Radiative parameterizations are important to both atmospheric and oceanic modeling alike. Atmospheric emissions from different sources within individual grid boxes also need to be parameterized to determine their impact on air quality. (en) In meteorologia e climatologia il termine parametrizzazione è un termine molto utilizzato nell'ambito della modellistica meteorologica e climatica per riferirsi al metodo modellistico di sostituire processi, che risultano a scala troppo piccola, oppure troppo complessa, per essere fisicamente rappresentati nel grigliato del modello, con processi semplificati. Questo approccio è in contrasto con quanto avviene invece con numerosi altri processi, ad esempio flussi a larga scala dell'atmosfera (es. scala sinottica), che sono invece risolti esplicitamente all'interno dei modelli. Associate a queste parametrizzazioni ci sono vari parametri usati per caratterizzare i processi semplificati. Esempi di questi parametri includono il tasso decrescente delle gocce di pioggia, le nubi convettive, le semplificazioni del trasferimento radiativo dell'atmosfera sulla base dei codici di trasferimento radiativo atmosferici e la . (it) |
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| rdfs:comment | Parameterization in a weather or climate model in the context of numerical weather prediction is a method of replacing processes that are too small-scale or complex to be physically represented in the model by a simplified process. This can be contrasted with other processes—e.g., large-scale flow of the atmosphere—that are explicitly resolved within the models. Associated with these parameterizations are various parameters used in the simplified processes. Examples include the descent rate of raindrops, convective clouds, simplifications of the atmospheric radiative transfer on the basis of atmospheric radiative transfer codes, and cloud microphysics. Radiative parameterizations are important to both atmospheric and oceanic modeling alike. Atmospheric emissions from different sources with (en) La paramétrisation, dans le contexte de la prévision numérique du temps, est une méthode de remplacement des processus trop petits ou complexes pour être physiquement représentée dans un modèle numérique par un processus simplifié. Cela s'oppose aux processus qui peuvent être résolus par la maille de la grille du modèle, par exemple un écoulement atmosphérique à grande échelle, qui sont explicitement résolus. (fr) In meteorologia e climatologia il termine parametrizzazione è un termine molto utilizzato nell'ambito della modellistica meteorologica e climatica per riferirsi al metodo modellistico di sostituire processi, che risultano a scala troppo piccola, oppure troppo complessa, per essere fisicamente rappresentati nel grigliato del modello, con processi semplificati. Questo approccio è in contrasto con quanto avviene invece con numerosi altri processi, ad esempio flussi a larga scala dell'atmosfera (es. scala sinottica), che sono invece risolti esplicitamente all'interno dei modelli. (it) |
| rdfs:label | Parametrizzazione (clima) (it) Paramétrisation (modèle atmosphérique) (fr) Parametrization (atmospheric modeling) (en) |
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