1. Conceptual Models (CMs): Wave - Upper wave
How to use MSG satellite images
similarities to and improvements
over MTP
Contact person:
Veronika Zwatz-Meise
Version 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 CM Wave: IR image + relevant NWP parameters
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 MSG additional channels + Channel combinations
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. CH03 Recognition of water and ice clouds: dark grey: ice clouds
white: water clouds
CH03

17. 134 4 different colours within upper wave:
different cloud layers and stages

18. 149 4 different colours within upper wave:
different cloud layers and stages

19. 139 4 different colours within upper wave:
different cloud layers and stages;
best separation between colours

20. 139 + Shear vorticity 300 hpa

21. CM: Wave - Upper wave WV and WV difference images
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

22. Ch05

23. Ch06

24. 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

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