Comparison Ch01 and 03 Development of deep convection

Development phase

Contact person:Veronika Zwatz-Meisezwatz-meise@zamg.ac.atVersion 1.0. 13 July 2004

CH01; 10.30

Ch01: blackcloudfree

Ch01: blackcloudfreeCh01: white

cloud

CH03; 10.30

Ch01: blackCh03: blackcloudfree

Ch01: blackCh03: blackcloudfree

Ch01: whiteCh03: blackstart of icing(!?)

CH02; 10.45

Ch01: whitecloud

CH03; 10.45

Ch01: whiteCh03: blackcontinued icing(!?)

CH01; 11.00

Ch01: whitecloud

CH03; 11.00

Ch01: whiteCh03: blackcontinued icing(!?)

CH01; 11.15

Ch01: whitecloud

CH03; 11.15

Ch01: whiteCh03: blackcontinued icing(!?)

CH01; 11.30

Ch01: whitecloud

CH03; 11.30

Ch01: whiteCh03: blackcontinued icingbut: different greyshades

CH02; 11.45

CH03; 11.45

CH01; 12.00

CH03; 12.00

CH01; 12.15

CH03; 12.15

Development of grey shadestructure withinthe big dark area

Probable evaluation potential

• Darkening in Ch03 can be determined quantitatively and automatically

• Can be used together with the deviation images (difference of motion corrected images) for the life cycle of cells

Further development of convective cells

CH01; 12.30

CH03; 12.30

CH01; 13.30

CH03; 13.30

CH01; 13.45

CH03; 13.45

CH01; 14.15

CH03; 14.15

CH01; 14.30

CH03; 14.30

CH02; 14.45

CH03; 14.45

Comparison Ch01,03RGB 134, 149

Development of deep convection:„phase of icing“

CH03; 10.30

Ch01: blackCh03: blackcloudfree

Ch01: blackCh03: blackcloudfree

Ch01: whiteCh03: blackstart of icing(!?)

RGB134; 10.30

orange:area of

begin of icing

RGB149; 10.30

Some magenta dotsbut not as indicative as 134

Comparison Ch01,03,09,RGB 134, 149

Development of deep convection„phase of MCSs and merger of MCSs“

CH01; 14.15

CH09; 14.15

CH03; 14.15

Different greyshadesfrom nearly black to light grey;synoptic interpretation:combined signal from water and ice cloud (?)

RGB134; 14.15

RGB149; 14.15