1. CIRRUS IN LEM & LARGE-SCALE MODELS
  -  Assemble well-observed cirrus cases based on the Chilbolton and ARM-SGP IOP
-  Assess UM running at various horizontal (4km to 300km) and vertical resolutions to predict cirrus cloud formation and evolution
- Evaluate how well the LEM performs in predicting cirrus cloud formation and evolution properties for these well-observed cases. How well are the microphysical, dynamical, and radiative characteristics of the cirrus compared to the observations.

2. CIRRUS IN LEM & LARGE-SCALE MODELS
 -  Determine the importance of various subgrid factors on the development of cirrus:
- vertical turbulent fluxes of vapour and condensate as determined from the LEM,
- effects of 3D radiative heating rates on the fluxes and cloud evolution
- Will be Met Office contribution to GCSS
working group 2. Will enable access to
results from a large range of CRMs and large
scale models.