DYCOMS ¶

Purpose ¶

With this example stratocumulus-topped boundary layers can be studied.

Description ¶

The setup is based on the ​GCSS LES intercomparison case ​DYCOMS-II-RF01 (​Stevens et al. (2005)). It describes stratocumulus convection in the sub-tropics over the ocean. With PALM, a well-mixed, coupled boundary layer with a continuous cloud deck can be simulated. Results from DYCOMS simulations with PALM were published in Heinze et al., (2012).

References ¶

• Heinze, R., S. Raasch and D. Mironov, 2012: Budgets of scalar fluxes for cloudy boundary layers
  20th Symposium on Boundary Layers and Turbulence, Boston, MA, USA (talk) ​extended abstract
  
  

PALM version ¶

Changelog not available

Required user code ¶

Please find the user code attached​. The DYCOMS case requires a special radiative forcing which is contained in calc_radiation_dycoms.f90. Due to this radiation scheme, small adjustments in the Makefile and in prognostic_equations.f90 are necessary. Additionally, prandtl_fluxes.f90 has to be slightly modified. The files mentioned before can be found in the attachment user_code​ in addition to the user routines. All the files in the attachment​ have to be placed in the same directory as the user routines.