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

user_nl_cice (with the compset of B_RCP4.5_CN)

Hello, I am trying to understand the impact of sea ice albedo on the seasonal cycle of sea ice volume.I managed to decrease ice albedo simply by adding three lines in the namelist, user_nl_cice:&ice_nml
albicev = 0.6
albsnowv = 0.8=> It works well for the present  day simulations, such as B_2000_CN; the Arctic sea ice concentration and thickness substantially decrease in 15 years.However, there is no change in sea ice volume in the case when this method (changing 'user_nl_cice') is applied to RCP scenarios, such as B_RCP4.5_CN:In B_RCP4.5_CN simulation, there is no difference in sea ice volume between the default ice albedo and the modified ice albedo.    
 

dbailey

CSEG and Liaisons
Staff member
What shortwave are you using? If it is shortwave = 'dEdd' then these have no effect. See the following FAQ:https://bb.cgd.ucar.edu/faq-albedoradiation-tuning-cesm-ciceDave
 
Top