acoustic remote sensing of large- scale temperature variability in the north pacific ocean peter f....
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Acoustic Remote Sensing of Large-Scale Temperature Variability in the
North Pacific OceanPeter F. Worcester, Bruce D. Cornuelle,Matthew A. Dzieciuch, Walter H. Munk
Scripps Institution of Oceanography, University of California, San Diego
Brian D. Dushaw, Bruce M. Howe,James A. Mercer, Robert C. Spindel
Applied Physics Laboratory, University of WashingtonDimitris Menemenlis
Jet Propulsion Laboratory, NASADetlef Stammer
Institut für Meereskunde, Universität Hamburg
AGU Ocean Sciences MeetingPortland, Oregon, 26-30 January 2004
Acoustic Thermometry of Ocean Climate: Goals
Determine the precision with which acoustic methods can measure large-scale changes in ocean temperature
Determine what effects, if any, the acoustic transmissions have on marine mammals and other marine life
North Pacific Acoustic Laboratory
North Pacific Acoustic Laboratory: Goals
To perform the second phase of research on the feasibility and value of large-scale acoustic thermometry
To study the behavior of sound transmissions in the ocean over long distances
To conduct studies on the possible long-term effects from the sound transmissions on marine life
ECCO OGCM: SIO
Summary
Long-term trends in large-scale ocean temperature are easily visible in the acoustic time series
Travel times can now be readily computed from OGCMs for comparison with acoustic data
Travel times have good signal-to-noise ratios for differences between models
Assimilation of travel times into OGCMs is needed to objectively assess the value of acoustic methods
OGCM parallelization makes non-local observations more complicated to assimilate using adjoint methods