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File:Ligne de grain.svg

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Français : Diagramme montrant une coupe verticale à travers une ligne de grain (orage) ou un système convectif de méso-échelle. On y voit la circulation de l'air et les zones de précipitations :
  1. Un courant-jet entrant arrière ;
  2. Un flux ascendant de l'avant vers l'arrière ;
  3. Une dépression dans le sillage, à la surface à la bordure arrière de la pluie stratiforme, associée au réchauffement de l'air non saturé du courant-jet entrant arrière ;
  4. Un anticyclone de méso-échelle sous la zone de pluie torrentielle convective ;
  5. une faible dépression due au réchauffement de l'air par compensation à l'avant du front de rafales ;
  6. Une faible dépression au niveau moyen de l'atmosphère (D3), apparemment due aux effets hydrostatiques, dans le flux ascendant près de la zone convective ;
  7. Un dépression de méso-échelle près de la zone de fonte (bande brillante) (D4) plus étendue que la précédente ;
  8. Anticyclone (A) au sommet du nuage, particulièrement important avec un complexe convectif de méso-échelle.
English: Conceptual vertical cross-section of a trailing stratiform Mesoscale convective storm flow structure:
  • A descending mesoscale rear inflow jet (RIJ)
  • An ascending front-to-rear flow
  • A "wake" low (L) occurs at the surface of the back edge of the stratiform rain, in association with warming due to unsaturated descent
  • A mesohigh (H) occurs below the convective region.
  • A weak mesolow (L1), associated with warming by compensating downward motion is often noted ahead of the convective line at the surface.
  • In the midtroposphere a small, apparently hydrostatic mesolow (L3) is located below the primary sloping buoyant convective updraft.
  • In the vicinity of the melting layer or just above, is another mesolow (L4) that is larger in scale.
  • A mesohigh at upper levels (H) atop the mesoscale system becomes particularly well marked in the case of mesoscale convective complexes.
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    Date/TimeThumbnailDimensionsUserComment
    current22:46, 13 March 2016Thumbnail for version as of 22:46, 13 March 20161,264 × 466 (69 KB)Pierre cb (talk | contribs)Text correction in English
    13:48, 26 February 2015Thumbnail for version as of 13:48, 26 February 20151,264 × 466 (68 KB)Whidou (talk | contribs)Add English translation.
    10:40, 25 February 2015Thumbnail for version as of 10:40, 25 February 20151,264 × 466 (56 KB)Whidou (talk | contribs)Push cloud accordingly to air flow.
    23:07, 23 February 2015Thumbnail for version as of 23:07, 23 February 20151,264 × 466 (54 KB)Whidou (talk | contribs)Raise cloud tail.
    20:35, 23 February 2015Thumbnail for version as of 20:35, 23 February 20151,264 × 466 (54 KB)Whidou (talk | contribs)Improve readability.
    17:39, 23 February 2015Thumbnail for version as of 17:39, 23 February 20151,264 × 466 (54 KB)Whidou (talk | contribs)Cleanup of Pierre cb's improvements
    14:13, 23 February 2015Thumbnail for version as of 14:13, 23 February 20152,000 × 752 (192 KB)Pierre cb (talk | contribs)Modifications pour ajouter couleur et quelques informations supplémentaires
    22:00, 22 February 2015Thumbnail for version as of 22:00, 22 February 2015620 × 233 (50 KB)Whidou (talk | contribs)User created page with UploadWizard

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