Several cases have been identified by the WG3 participants as being excellent testbeds for the development of the needed cloud parameterizations of extra-tropical layer clouds. A brief summary of these cases is shown in the following tables.

EXTRA-TROPICAL LAYER CLOUD SYSTEM SIMULATIONS

LOCATION        STUDY   SITUATION             CONTACT

oceanic situations:
Arctic Canada   BASE    Warm Front            K Szeto
Atlantic Canada CASP II Deepening Storm       K. Szeto
East Atlantic   FRONTS  Storm systems         S. Clough
North Sea       EUCREX  Occlusion             L. Levkov
East Atlantic   FASTEX  Frontal systems       S. Clough

coastal situations:
Australia       CFRP    Cool Change            B. Ryan
Germany         BALTEX  Frontal system         B Rockel
Japan           TREX    Frontal system         Y Fujiyoshi

continental cases:
New Zealand     SALPEX  Heavy Rain             M Revell
Colorado        WISP    Upslope Snow           R Rasmussen
North America   GCIP-NC                        R. Lawford (experiment in 1997/98)


FUNDAMENTAL PROCESSES IN DIFFERENT SITUATIONS

Sub-Cloud
 Diabatic Heat CFRP, BASE
Embedded
 Convection    SALPEX
Frontogenesis  BASE, CASP II, FRONTS92, CFRP, BALTEX
Microphysical
 nucleation    WISP
 evaporation/
  sublimation  BASE, CFRP
 multi-phases  CASP II, WISP
Layering       EUCREX, BASE, WISP, FRONTS92
Radiation      BASE, CFRP, BALTEX, EUCREX
Rain           SALPEX, FRONTS92, BALTEX
Slant Ascent   WISP
Snow           BASE, WISP, CASP II
Subgrid
  Orography    SALPEX, WISP