Version 9 (modified by rlod, 3 years ago) (diff) |
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Name and subject of the action
Last edition: Wikinfo(changed_ts)? by Wikinfo(changed_by)?
The PI is responsible to closely follow the progress of the action, and especially to contact NEMO project manager if the delay on preview (or review) are longer than the 2 weeks expected.
Summary
Action | Validation of the TOP Antarctic Ice Sheet Tracer Module |
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PI(S) | Person R. |
Digest | Validation of AIS iron source in eORCA1 |
Dependencies | If any |
Branch | source:/NEMO/branches/{YEAR}/dev_r{REV}_{ACTION_NAME} |
Previewer(s) | O. Aumont, C. Ethé |
Reviewer(s) | O. Aumont, C. Ethé |
Ticket | #2656 |
Description
Validation of the TOP trcais.F90 module for representing the external source of biogeochemical tracers from icebergs and ice shelves, currently active for dissolved Fe.
The validation consists of activating the AIS source of Fe in the TOP namelist with open and non-open ice shelf cavities in eORCA1 configuration grid and comparing the results with a control experiment where the external source is not activated.
Each experiment have a duration of 10 years.
Implementation
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Documentation updates
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Preview
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Tests
Results of the validation experiments:
See attachment for plots of surface Fe anomalies (relative to CTL) for parameterized ice shelf cavities (Fig. 1) and resolved ice shelf cavities (Fig. 2) when activating Fe input from the Antarctic ice sheet (nn_ais_tr = 1, prescribed tracer concentration in iceberg and ice shelf).
- The results for the parameterized ice shelf cavities are as expected with a net positive effect on surface Fe concentrations.
- For the resolved ice cavities, the results are more surprising as there are areas with a positive effect on surface iron concentrations and areas with a negative effect potentially induced by seawater circulation in the cavities. This point deserves further investigation.
The model outputs are available on jeanzay (idris)
- CTL run : /gpfsstore/rech/omr/romr014/IGCM_OUT/NEMO/DEVT/clim/eOR1Si3Pv4-CLIM-CORE-CTL
- ice shelf cavities parametrized (nn_ais_tr = 1): /gpfsstore/rech/omr/romr014/IGCM_OUT/NEMO/DEVT/clim/eOR1Si3Pv4-AISFe-PAR1
- ice shelf cavities resolved (nn_ais_tr = 1): /gpfsstore/rech/omr/romr014/IGCM_OUT/NEMO/DEVT/clim/eOR1Si3Pv4-AISFe-CAV1
- ice shelf cavities parametrized (nn_ais_tr = 0): /gpfsstore/rech/omr/romr014/IGCM_OUT/NEMO/DEVT/clim/eOR1Si3Pv4-AISFe-PAR0
- ice shelf cavities resolved (nn_ais_tr = 0): /gpfsstore/rech/omr/romr014/IGCM_OUT/NEMO/DEVT/clim/eOR1Si3Pv4-AISFe-CAV0
Review
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Attachments (5)
- Fig1.2.png (162.0 KB) - added by rlod 2 years ago.
- Fig2.png (165.4 KB) - added by rlod 2 years ago.
- Fig3.png (141.8 KB) - added by rlod 2 years ago.
- Fig1.png (162.0 KB) - added by rlod 2 years ago.
- Fig2.2.png (165.4 KB) - added by rlod 2 years ago.
Download all attachments as: .zip