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1. Summary
2. Preview
3. Tests
4. Review

Summary

Action	Implementation of iceberg and ice shelf Fe source in PISCES
PI(S)	Renaud Person
Digest	see person et al. (2019), doi: 10.5194/bg-16-3583-2019
Dependencies	coupling with feshwater fluxes from ice shelf and iceberg
Branch	source:/NEMO/branches/2020/dev_r{REV}_{ACTION_NAME}
Previewer(s)	O.Aumont
Reviewer(s)	O.Aumont
Ticket	#XXXX

Description

Based on the development done with NEMO 3.6 of the representation of the missing external source of Fe from iceberg and ice shelf in the PISCES model

Implementation

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No macro or processor named 'box' found

Fe is actualized according to the external sources of Fe from iceberg and ice shelf. A sediment content associated to a solubility fraction of sediment Fe is added to the freshwater fluxes of iceberg and ice shelf. For ice shelf, the parameterization of Mathiot et al. (2017) is used for the distribution of Fe throughout the water column. For iceberg, a homogeneous distribution until 120 m of depth is applied.

modified routines :

• p4zsbc.F90
• p4zsed.F90

Intermediate variables to compute ziron variable in p4zsed:

• zironberg : "iron from iceberg freshwater flux"
  
• zironisf : "iron from ice shelf freshwater flux"

In namelist_pisces, 3 parameters are added:

• isffeinput : "Fraction of bioavailable iron from ice shelves"
  
• icbfeinput : "Fraction of bioavailable iron from icebergs"
  
• icbdep : "Mean underwater depth of iceberg (level depth)"

Documentation updates

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Preview

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Tests

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Review

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