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Conceptual Models (CMs): Wave - Upper wave

Conceptual Models (CMs): Wave - Upper wave. How to use MSG satellite images similarities to and improvements over MTP. Contact person: Veronika Zwatz-Meise zwatz-meise@zamg.ac.at Version 1.0. 13 July 2004. CM: Wave - Upper wave.

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Conceptual Models (CMs): Wave - Upper wave

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  1. Conceptual Models (CMs):Wave - Upper wave How to use MSG satellite images similarities to and improvements over MTP Contact person: Veronika Zwatz-Meise zwatz-meise@zamg.ac.at Version 1.0. 13 July 2004

  2. CM:Wave - Upper wave • MTP channels in comparison with the corresponding MSG channels • CM Wave: IR image + relevant NWP parameters • MSG additional channels + Channel combinations • WV and WV difference images

  3. MTP: ir As the image time between MTP and MSG differs, a shift between the cloud systems can be noticed in the two images

  4. MSG: ch09 Sharper contours through improved space resolution

  5. MTP: vis

  6. MSG: ch01 Looks relatively similar; but: somewhat coarser space resolution

  7. MTP:VIS(2x)+IR

  8. MSG:129 Sharper contours and more detailed grey-shades through improved space resolution in IRand additional information from 2 different VIS channels

  9. CM:Wave - Upper wave • MTP channels in comparison with the corresponding MSG channels • CM Wave: IR image + relevant NWP parameters • MSG additional channels + Channel combinations • WV and WV difference images

  10. H1000 Upper wave: No or only very weak surface minimum

  11. H500 Wave and upper wave: Upper level trough at rear side of front

  12. Equ. Thickness + TFP Thickness gradient and TFP; transition from Kata to Anatype; TFP at leading edge typical for upper wave

  13. TFP + TA 700 hPa Upper wave: CA at 700 hPawithin whole cloud band

  14. H500 + PVA Upper level trough at rear side of front PVA max along as well as above frontal cloud band

  15. CM:Wave - Upper wave • MTP channels in comparison with the corresponding MSG channels • CM Wave: IR image + relevant NWP parameters • MSG additional channels + Channel combinations • WV and WV difference images

  16. Recognition of water and ice clouds: dark grey: ice clouds white: water clouds CH03

  17. 139: The IR ch09 is inverted 4 different colours within upper wave: different cloud layers and stages; best separation between colours

  18. 139 + Shear vorticity 300 hpa Jet axis is along the blue stripe at the rear side representing high ice cloud

  19. MSG:139: The IR ch09 is not inverted but used as original radiation Brown: thin cold ice cloud Brown-red:thick, multilayered cloud Yellow: thick water cloud

  20. CM:Wave - Upper wave • MTP channels in comparison with the corresponding MSG channels • CM Wave: IR image + relevant NWP parameters • MSG additional channels + Channel combinations • WV and WV difference images

  21. Ch05

  22. Ch06

  23. Ch05 Distinct black stripe only in upper layers grey area in both levels; darker in the lower layer No big difference between the two channels: cloud edge

  24. Example for dry air in lower levels below frontal surface and jet axis wet dry wet dry

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