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2020WP/ASINTER-03_laurent_bulk_and_wave – NEMO
wiki:2020WP/ASINTER-03_laurent_bulk_and_wave

Version 11 (modified by laurent, 2 years ago) (diff)

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Wave-aware bulk formula parameterizations

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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.

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

Summary

See ticket #2158 https://forge.ipsl.jussieu.fr/nemo/ticket/2158

Action Wave-aware bulk formula parameterizations
PI(S) Laurent Brodeau @ Ocean Next

Digest

Improvement of bulk closures and parameterizations for more accurate estimate of bulk exchange coefficients, through the use of the relevant surface wave information. In other words, the bulk parameterizations already included in NEMO/SBC, such as COARE or ECMWF, will have the possibility to deduce a more accurate roughness length (z0) of the sea-surface based on wave information originating either from the wave model (in the coupled case), or from a monthly climatology.

Dependencies #2159
Expected for ?
Ticket #2158
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Previewer(s)
Reviewer(s)
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Description

Implementation

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Documentation updates

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Preview

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Tests

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Test-case associated with this development:

  • Test case functionality: test-case STATION_ASF checks that all bulk algorithms available in NEMO, used to estimate the bulk transfer coefficients for turbulent air-sea and air-ice fluxes, are working properly. This is done by checking that all turbulent fluxes computed at the punctual location of STATION_ASF lie within a reasonable range.
  • Test case setup: in STATION_ASF nemo.exe runs on one processor and needs only 2 lightweight netCDF files as input. These 2 files provide hourly time-series of sea-surface variables (SST, SSH), and surface atmospheric state (wind, temperature, humidity and downwelling radiative fluxes), respectively, at the punctual location of STATION_ASF. 1 year of simulation with STATION_ASF takes a few tens of seconds on 1 proc.
  • Test case verification value: WILL BE boolean. Each computed turbulent flux (hourly time-series), namely evaporation, wind stress and sensible flux, will be checked for consistency during a whole year. This operation will be carried out with every bulk (air-sea and air-ice) parameterization algorithms available in NEMO, including the testing of different options: cool-skin/warm-layer and wave-pattern input).
  • Status of the test case as for now: Exists on the official GitHub? for NEMO. Boolean output not ready yet, version for air-ice fluxes in progress.

Review

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