A description of tides near the Chesapeake Bay entrance using in situ data with an adjoint model

Z. R. Hallock, P. Pistek, J. W. Book, J. L. Miller, Lynn K Shay, H. T. Perkins

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Time series of surface elevation and current velocity in the vicinity of the Chesapeake Bay entrance are assimilated into a linear, barotropic model using an iterative adjoint method. Tide surface elevations, NOAA-NOS tidal data, moored acoustic Doppler current profiler (ADCP), and ocean surface current radar (OSCR) data are included in the assimilation. Data are analyzed for three tidal constituents (M2, S2, O1); tidal series are constructed from these constituents and then used in the model assimilations. Statistics of predicted currents compare favorably with those calculated from data not used in the assimilation. An error analysis of the data distribution is performed for the M2 tidal component, showing lower errors near assimilation data series but large errors, particularly for velocity, at some locations. Addition of a hypothetical current mooring dramatically reduces errors over most of the domain. We believe these results give the most demonstrably accurate description now available of tidal currents for this region of strong currents and heavy shipping.

Original languageEnglish (US)
Pages (from-to)20-21
Number of pages2
JournalJournal of Geophysical Research C: Oceans
Volume108
Issue number3
StatePublished - Mar 15 2003

Fingerprint

Chesapeake Bay (US)
Tides
tides
entrances
tide
assimilation
Mooring
Freight transportation
Iterative methods
Error analysis
Time series
adjoint method
Radar
tidal constituent
Acoustics
Statistics
Acoustic Doppler Current Profiler
error analysis
tidal current
shipping

Keywords

  • Chesapeake Bay
  • Data assimilation
  • Tides

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Atmospheric Science
  • Geochemistry and Petrology
  • Geophysics
  • Oceanography
  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Hallock, Z. R., Pistek, P., Book, J. W., Miller, J. L., Shay, L. K., & Perkins, H. T. (2003). A description of tides near the Chesapeake Bay entrance using in situ data with an adjoint model. Journal of Geophysical Research C: Oceans, 108(3), 20-21.

A description of tides near the Chesapeake Bay entrance using in situ data with an adjoint model. / Hallock, Z. R.; Pistek, P.; Book, J. W.; Miller, J. L.; Shay, Lynn K; Perkins, H. T.

In: Journal of Geophysical Research C: Oceans, Vol. 108, No. 3, 15.03.2003, p. 20-21.

Research output: Contribution to journalArticle

Hallock, ZR, Pistek, P, Book, JW, Miller, JL, Shay, LK & Perkins, HT 2003, 'A description of tides near the Chesapeake Bay entrance using in situ data with an adjoint model', Journal of Geophysical Research C: Oceans, vol. 108, no. 3, pp. 20-21.
Hallock, Z. R. ; Pistek, P. ; Book, J. W. ; Miller, J. L. ; Shay, Lynn K ; Perkins, H. T. / A description of tides near the Chesapeake Bay entrance using in situ data with an adjoint model. In: Journal of Geophysical Research C: Oceans. 2003 ; Vol. 108, No. 3. pp. 20-21.
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AU - Pistek, P.

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N2 - Time series of surface elevation and current velocity in the vicinity of the Chesapeake Bay entrance are assimilated into a linear, barotropic model using an iterative adjoint method. Tide surface elevations, NOAA-NOS tidal data, moored acoustic Doppler current profiler (ADCP), and ocean surface current radar (OSCR) data are included in the assimilation. Data are analyzed for three tidal constituents (M2, S2, O1); tidal series are constructed from these constituents and then used in the model assimilations. Statistics of predicted currents compare favorably with those calculated from data not used in the assimilation. An error analysis of the data distribution is performed for the M2 tidal component, showing lower errors near assimilation data series but large errors, particularly for velocity, at some locations. Addition of a hypothetical current mooring dramatically reduces errors over most of the domain. We believe these results give the most demonstrably accurate description now available of tidal currents for this region of strong currents and heavy shipping.

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