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 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
MTP: ir As the image time between MTP and MSG differs, a shift between the cloud systems can be noticed in the two images
MSG: ch09 Sharper contours through improved space resolution
MTP: vis
MSG: ch01 Looks relatively similar; but: somewhat coarser space resolution
MTP:VIS(2x)+IR
MSG:129 Sharper contours and more detailed grey-shades through improved space resolution in IRand additional information from 2 different VIS channels
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
H1000 Upper wave: No or only very weak surface minimum
H500 Wave and upper wave: Upper level trough at rear side of front
Equ. Thickness + TFP Thickness gradient and TFP; transition from Kata to Anatype; TFP at leading edge typical for upper wave
TFP + TA 700 hPa Upper wave: CA at 700 hPawithin whole cloud band
H500 + PVA Upper level trough at rear side of front PVA max along as well as above frontal cloud band
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
CH03 Recognition of water and ice clouds: dark grey: ice clouds white: water clouds CH03
134 4 different colours within upper wave: different cloud layers and stages
149 4 different colours within upper wave: different cloud layers and stages
139 4 different colours within upper wave: different cloud layers and stages; best separation between colours
139 + Shear vorticity 300 hpa
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
Ch05
Ch06
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
Example for dry air in lower levels below frontal surface and jet axis wet dry wet dry