Role of surface heat fluxes underneath cold pools

The role of surface heat fluxes underneath cold pools is investigated using cloud-resolving simulations with either interactive or horizontally homogenous surface heat fluxes over an ocean and a simplified land surface. Over the ocean, there are limited changes in the distribution of the cold pool t...

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Détails bibliographiques
Publié dans:Geophysical research letters. - 1984. - 43(2016), 2 vom: 28. Jan., Seite 874-883
Auteur principal: Gentine, Pierre (Auteur)
Autres auteurs: Garelli, Alix, Park, Seung-Bu, Nie, Ji, Torri, Giuseppe, Kuang, Zhiming
Format: Article
Langue:English
Publié: 2016
Accès à la collection:Geophysical research letters
Sujets:Journal Article cold pools convection entrainment mass flux surface fluxes
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520 |a The role of surface heat fluxes underneath cold pools is investigated using cloud-resolving simulations with either interactive or horizontally homogenous surface heat fluxes over an ocean and a simplified land surface. Over the ocean, there are limited changes in the distribution of the cold pool temperature, humidity, and gust front velocity, yet interactive heat fluxes induce more cold pools, which are smaller, and convection is then less organized. Correspondingly, the updraft mass flux and lateral entrainment are modified. Over the land surface, the heat fluxes underneath cold pools drastically impact the cold pool characteristics with more numerous and smaller pools, which are warmer and more humid and accompanied by smaller gust front velocities. The interactive fluxes also modify the updraft mass flux and reduce convective organization. These results emphasize the importance of interactive surface fluxes instead of prescribed flux boundary conditions, as well as the formulation of surface heat fluxes, when studying convection 
650 4 |a Journal Article 
650 4 |a cold pools 
650 4 |a convection 
650 4 |a entrainment 
650 4 |a mass flux 
650 4 |a surface fluxes 
700 1 |a Garelli, Alix  |e verfasserin  |4 aut 
700 1 |a Park, Seung-Bu  |e verfasserin  |4 aut 
700 1 |a Nie, Ji  |e verfasserin  |4 aut 
700 1 |a Torri, Giuseppe  |e verfasserin  |4 aut 
700 1 |a Kuang, Zhiming  |e verfasserin  |4 aut 
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