Opened 4 years ago
Closed 4 years ago
#518 closed enhancement (fixed)
How to calculate the fraction covered by snow
| Reported by: | luyssaert | Owned by: | somebody |
|---|---|---|---|
| Priority: | major | Milestone: | IPSLCM6.v2 |
| Component: | Physical processes | Version: | |
| Keywords: | Cc: |
Description
- condveg.f90. condveg_frac_snow is calculated differently equations. It needs to be discussed which approach is preferred. The merge now follows the CAN approach but it can go back to the trunk version if wanted.
Change History (2)
comment:1 Changed 4 years ago by luyssaert
comment:2 Changed 4 years ago by luyssaert
- Resolution set to fixed
- Status changed from new to closed
Changes were commited in r5821
Note: See
TracTickets for help on using
tickets.
For the calculation of frac_snow the trunk was followed and the approach initially adopted in CN-CAN was abandoned. For the calculation of albedo the CLM3 approach was set as the default and is controled by the flag OK_SNOW_ALBEDO_CLM3. If the flag is set to .TRUE. the CLM3 approach is used. If set to .FALSE. the trunk approach was used. CLM3 was used a the default because it distinguished between diffuse and direct light, snow age and the solar angle to calculate the albedo. The use of the solar angle is in line with the two stream albedo approach.