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#2476 (Missing mixing length parameterization under sea-ice) – NEMO

Opened 4 years ago

Closed 3 years ago

#2476 closed Defect (fixed)

Missing mixing length parameterization under sea-ice

Reported by: cetlod Owned by: systeam
Priority: low Milestone:
Component: ZDF Version:
Severity: minor Keywords:
Cc:

Description

Context

There is an important missing TKE parameterization under sea-ice used in CMIP6 experiments

Analysis

It has been observed that without a source of TKE other than ocean ice stress there is a severe lack of mixing under the ice so that MLD under very weak ice, reaching 1m in the melting period with ridiculously weak SSS cf. Gurvan

Recommendation

add a parameterization of mixing length scaling with sea ice thickness as it has been done in SHACONEMO

   zmxlm(:,:,1) = ( ( 1. - fr_i(:,:) ) * zraug * taum(:,:) + fr_i(:,:) * hm_i(:,:) * 2. ) * tmask(:,:,1)

Commit History (2)

ChangesetAuthorTimeChangeLog
13007cetlod2020-06-02T18:21:37+02:00

trunk:add mixing length parameterization depending on sea-ice thickness, see ticket #2476

13006cetlod2020-06-02T18:06:07+02:00

branch clem_dan_fixcpl : add mixing length parameterization depending on sea-ice thickness, see ticket #2476

Change History (3)

comment:1 Changed 4 years ago by cetlod

In 13006:

Error: Failed to load processor CommitTicketReference
No macro or processor named 'CommitTicketReference' found

comment:2 Changed 4 years ago by cetlod

In 13007:

Error: Failed to load processor CommitTicketReference
No macro or processor named 'CommitTicketReference' found

comment:3 Changed 3 years ago by clem

  • Resolution set to fixed
  • Status changed from new to closed
  • Version v4.0.* deleted
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