Now showing items 1-20 of 26

  • The adjoint method of data assimilation used operationally for shelf circulation 

    Griffin, DA, and KR Thompson. 1996. "The adjoint method of data assimilation used operationally for shelf circulation." Journal of Geophysical Research-Oceans 101(C2): 3457-3477. DOI:10.1029/95JC03218
    A real-time shelf circulation model with data assimilation has been successfully used, possibly for the first time, on the outer Nova Scotian Shelf, The adjoint method was used to infer the time histories of flows across ...
  • Assimilating long-term hydrographic information into an eddy-permitting model of the North Atlantic 

    Wright, D. G., K. R. Thompson, and Y. Lu. 2006. "Assimilating long-term hydrographic information into an eddy-permitting model of the North Atlantic." Journal of Geophysical Research 111(C9): 09022-C09022. DOI: 10.1029/2005JC003200
    No abstract available.
  • A description of water types on the Mackenzie Shelf of the Beaufort Sea during winter 

    Moore, R. M., H. Melling, and K. R. Thompson. 1992. "A description of water types on the Mackenzie Shelf of the Beaufort Sea during winter." Journal of Geophysical Research.C.Oceans 97(C8): 12607-12618. DOI:10.1029/92JC00842
    For a number of years during the 1980s, observations of the physical and chemical properties of seawater in the southeastern Beaufort Sea have been acquired in late winter. The most complete data set, from 1987, has been ...
  • The detection of coastal-trapped waves 

    Haines, J. W., K. R. Thompson, and D. P. Wiens. 1991. "The detection of coastal-trapped waves." Journal of Geophysical Research 96: 2593-7. DOI:10.1029/90JC02218
    The authors outline a simple method for estimating the cross-spectral matrix of coastal-trapped wave amplitudes, A, from a set of oceanographic observations. Specifically, they propose that A may be estimated by ...
  • Effects of temperature and circulation on the population dynamics of Calanus finmarchicus in the Gulf of St. Lawrence and Scotian Shelf: Study with a coupled, three-dimensional hydrodynamic, stage-based life history model 

    Zakardjian, BA, JY Sheng, JA Runge, I. McLaren, et al. 2003. "Effects of temperature and circulation on the population dynamics of Calanus finmarchicus in the Gulf of St. Lawrence and Scotian Shelf: Study with a coupled, three-dimensional hydrodynamic, stage-based life history model." Journal of Geophysical Research-Oceans 108(C11): 8016-8016. DOI:10.1029/2002JC001410
    We developed a physical-biological model for the Gulf of St. Lawrence (GSL) and Scotian Shelf (SS) by coupling a stage-based life-history model of the planktonic copepod Calanus finmarchicus to a three-dimensional ocean ...
  • Estimation of Low-Frequency Wind Stress Fluctuations Over the Open Ocean 

    THOMPSON, KR, RF MARSDEN, and DG WRIGHT. 1983. "Estimation of Low-Frequency Wind Stress Fluctuations Over the Open Ocean." Journal of Physical Oceanography 13(6): 1003-1011. © Copyright 1983 American Meteorological Society (AMS)
    No abstract available.
  • Extraction of tidal streams from a ship-borne acoustic Doppler current profiler using a statistical-dynamical model 

    Dowd, M., and KR Thompson. 1996. "Extraction of tidal streams from a ship-borne acoustic Doppler current profiler using a statistical-dynamical model." Journal of Geophysical Research-Oceans 101(C4): 8943-8956. DOI:10.1029/95JC02693
    We present a method for extracting the barotropic tide directly from the time-space series of horizontal velocity obtained by a ship-borne acoustic Doppler current profiler (ADCP). The method is conceptually straightforward, ...
  • Low-Frequency Fluctuations in the Strait of Gibraltar from Medalpex Sea-Level Data 

    GARRETT, C., J. AKERLEY, and K. THOMPSON. 1989. "Low-Frequency Fluctuations in the Strait of Gibraltar from Medalpex Sea-Level Data." Journal of Physical Oceanography 19(11): 1682-1696. © Copyright 1989 American Meteorological Society (AMS)
    No abstract available.
  • Madden-Julian Oscillation and sea level: Local and remote forcing 

    Oliver, ECJ, and K. R. Thompson. 2010. "Madden-Julian Oscillation and sea level: Local and remote forcing." Journal of Geophysical Research.C.Oceans 115(C01). DOI:10.1029/2009JC005337
    The Madden-Julian Oscillation (MJO) is the dominant mode of atmospheric variability in the tropical atmosphere on intraseasonal time scales (i.e., weeks to seasons). This study examines the connection between the MJO and ...
  • Mapping the relationship between northern hemisphere winter surface air temperature and the Madden-Julian oscillation 

    Zhou, Yang, K. R. Thompson, and Youyu Lu. 2011. "Mapping the relationship between northern hemisphere winter surface air temperature and the Madden-Julian oscillation." Monthly Weather Review 139(8): 2439-54. doi:10.1175/2011MWR3587.1
    A regression-based modeling approach is described for mapping the dependence of atmospheric state variables such as surface air temperature (SAT) on the Madden-Julian oscillation (MJO). For the special case of a linear ...
  • The mean surface circulation of the North Atlantic subpolar gyre: A comparison of estimates derived from new gravity and oceanographic measurements 

    Higginson, S., K. R. Thompson, J. Huang, M. Veronneau, et al. 2011. "The mean surface circulation of the North Atlantic subpolar gyre: A comparison of estimates derived from new gravity and oceanographic measurements." Journal of Geophysical Research-Oceans 116: 08016-C08016.DOI:10.1029/2010JC006877
    A new mean sea surface topography (MSST) is used to estimate the surface circulation of the subpolar gyre of the northwest Atlantic. The MSST is produced using a new geoid model derived from a blend of gravity data from ...
  • Mean surface topography of the northwest Atlantic: Comparison of estimates based on satellite, terrestrial gravity, and oceanographic observations 

    Thompson, K. R., J. Huang, M. Veronneau, D. G. Wright, et al. 2009. "Mean surface topography of the northwest Atlantic: Comparison of estimates based on satellite, terrestrial gravity, and oceanographic observations." Journal of Geophysical Research - Part C - Oceans 114: 0701511. DOI:10.1029/2008JC004859
    The accuracy of a new mean sea surface topography (MSST) of the northwest Atlantic is assessed. The MSST is estimated from 12 years of altimeter observations referenced with respect to a new regional geoid based on a blend ...
  • A model of the circulation on the outer Scotian shelf with open boundary conditions inferred by data assimilation 

    Thompson, K. R., and D. A. Griffin. 1998. "A model of the circulation on the outer Scotian shelf with open boundary conditions inferred by data assimilation." Journal of Geophysical Research 103: 30641-60. DOI:10.1029/98JC01765
    The circulation on Western Bank is described using data collected in spring 1991 and 1992 as part of an interdisciplinary study of the early life history of Atlantic cod (Gadus morhua). The mean circulation over the crest ...
  • Modeling events of sea-surface variability using spectral nudging in an eddy permitting model of the northeast Pacific Ocean 

    Stacey, Michael W., Jennifer Shore, Daniel G. Wright, and Keith R. Thompson. 2006. "Modeling events of sea-surface variability using spectral nudging in an eddy permitting model of the northeast Pacific Ocean." Journal of Geophysical Research-Oceans 111(C6): 06037-C06037. DOI:10.1029/2005JC003278
    [ 1] Eddies are an important part of the current system that hugs the coasts of British Columbia and Alaska. The ability of "spectral nudging'' to improve the eddy statistics determined from model simulations of this current ...
  • A modified galerkin-spectral model for three-dimensional, barotropic, wind-driven shelf circulation 

    Sheng, Jinyu, and K. R. Thompson. 1993. "A modified galerkin-spectral model for three-dimensional, barotropic, wind-driven shelf circulation." Journal of Geophysical Research.C.Oceans 98(C4): 7011-7022. DOI:10.1029/92JC02963
    The authors describe an efficient numerical scheme for calculating wind-driven currents on the continental shelf. Our scheme is based on the spectral approach introduced by Heaps and subsequently modified by Lardner. The ...
  • Predicting mesoscale variability of the North Atlantic using a physically motivated scheme for assimilating altimeter and Argo observations 

    Liu, Yimin, and K. R. Thompson. 2009. "Predicting mesoscale variability of the North Atlantic using a physically motivated scheme for assimilating altimeter and Argo observations." Monthly Weather Review 137(7): 2223-37. doi:10.1175/2008MWR2625.1
    A computationally efficient scheme is described for assimilating sea level measured by altimeters and vertical profiles of temperature and salinity measured by Argo floats. The scheme is based on a transformation of ...
  • Predicting the frequency of storm surges and extreme sea levels in the northwest Atlantic 

    Bernier, N. B., and K. R. Thompson. 2006. "Predicting the frequency of storm surges and extreme sea levels in the northwest Atlantic." Journal of Geophysical Research-Oceans 111(C10): 10009-C10009. DOI:10.1029/2005JC003168
    [1] A 40 year hindcast of storm surges in the northwest Atlantic and adjacent shelf seas is performed using a 2-D nonlinear barotropic ocean model forced by realistic 6 hourly winds and air pressures. This hindcast is used ...
  • Prediction of surface currents and drifter trajectories on the inner Scotian Shelf 

    Thompson, KR, JY Sheng, PC Smith, and LZ Cong. 2003. "Prediction of surface currents and drifter trajectories on the inner Scotian Shelf." Journal of Geophysical Research-Oceans 108(C9): 3287-3287. DOI:10.1029/2001JC001119
    The predictive skill of a simple model of surface flow on the Scotian Shelf is assessed using oceanographic data collected in February 1996. The model is forced by wind stress, water density, and sea level along the open ...
  • Return periods of extreme sea levels from short records 

    Middleton, J. F., and K. R. Thompson. 1986. "Return periods of extreme sea levels from short records." Journal of Geophysical Research 91: 11707-16. DOI: 10.1029/JC091iC10p11707
    Extreme sea levels usually arise from a combination of the tides (assumed here to be deterministic) and storm surges (assumed stochastic). The authors show how tide and surge statistics derived from short (~1 year) records ...
  • A robust method for diagnosing regional shelf circulation from scattered density profiles 

    Sheng, JY, and KR Thompson. 1996. "A robust method for diagnosing regional shelf circulation from scattered density profiles." Journal of Geophysical Research-Oceans 101(C11): 25647-25659. DOI:10.1029/96JC01331
    We present a straightforward method for estimating surface circulation on an f plane from a set of irregularly spaced vertical density profiles. The first step is to express bottom density rho(h) as the sum of a mean for ...