Scheduled Downtime
On Tuesday 24 October 2023 @ 5pm MT the forums will be in read only mode in preparation for the downtime. On Wednesday 25 October 2023 @ 5am MT, this website will be down for maintenance and expected to return online later in the morning.
Normal Operations
The forums are back online with normal operations. If you notice any issues or errors related to the forums, please reach out to help@ucar.edu

Ice roughness length in CICE

J

jon_bergh@nersc_no

New Member
Hi
I try to find out the roughness length used in the CICE model. I am running CAM4.0 in a stand alone configuration. I can only see one value of the roughness length in CICE, the default value of iceruf = 5e-4. This seems to be a very low value!

Is this the only value for the roughness length in the CICE?

Thanks!
Jon
 
D

dbailey

CSEG and Liaisons
Staff member
The boundary layer over ice has to make certain assumptions. The roughness of the ice surface is one of these assumptions. If you are referring to the ice-ocean interface, this boundary layer formulation is even simpler and assumes a constant heat transfer coefficient and drag coefficient. You are certainly welcome to develop your own formulation and present your findings at a Polar Climate Working Group meeting in the near future.

Dave
 
You must log in or register to reply here.
Top