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| Titel |
Ocean Surface Observations of the Diurnal Cycle of Turbulence with ASIP |
| VerfasserIn |
Brian Ward, Graig Sutherland, Gilles Reverdin, Louis Marié, Kai Christensen, Göran Broström, Ramsey Harcourt, Øyvind Breivik |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250108193
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| Publikation (Nr.) |
 EGU/EGU2015-7935.pdf |
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| Zusammenfassung |
| The STRASSE field experiment was conducted in August/September 2012 as
part of the Salinity Processes in the Upper Ocean Regional Study
(SPURS) campaign. The average conditions during STRASSE were low wind
and high insolation, which are typical for the generation of
near-surface diurnal warming. We deployed the Air-Sea Interaction
Profiler (ASIP), an autonomous upwardly-rising microstructure
instrument capable of resolving small-scale processes close to the
air-sea interface. ASIP provides direct estimates of the dissipation
rate of turbulent kinetic energy, temperature, salinity, and PAR at
timescales suitable for the study of diurnal processes. In combination
with the ASIP data, we had shipboard meteorological data for
calculation of atmospheric forcing, and a surface mounted Lagrangian
ADCP for determination of the near-surface velocity. There was a
strong diurnal cycle of temperature and dissipation (from ASIP) and
shear (from an ADCP). As air-sea fluxes are driven by turbulence
immediately at the air-sea interface, the presence of this enhanced
shear-induced turbulence will enhance fluxes. |
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