McKee Theresa K.

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Theresa K.

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  • Technical Report
    Knorr 147 leg v hydrographic data report : Labrador Sea Deep Convection Experiment
    (Woods Hole Oceanographic Institution, 2000-05) Zimmermann, Sarah ; McKee, Theresa K. ; Pickart, Robert S. ; Smethie, William M.
    Between 2 February and 20 March 1997, the first phase of the Labrador Sea Deep Convection Experiment was carried out on R/V Knorr, during which 127 hydrographic stations were occupied throughout the Labrador basin. This included five boundary crossings (two on the east and three on the west). Special emphasis was placed on the western portion of the basin were deep convection occurs. Expendable Bathy Thermographs (XBTs) were launched regularly to increase resolution near the boundary and to help optimally place interior stations. Three "to-yo" CTD surveys were conducted, and Langrangian floats were delpoyed throughout the cruise. Despite extremely difficult working conditions, this cruise was successful in observing deep convection under "classic" wintertime conditions. This report describes the CTD operation and performance and also presents vertical profiles of CTD Potential Temperature, Salinity, and Potential Density (referenced to the surface and 1500 db) plotted versus Depth. Instructions for obtaining the data via anonymous FTP are included in Appendix B.
  • Technical Report
    Impact of Irminger Rings on Deep Convection in the Labrador Sea : mooring instrument, cruise CTD, and APEX data report September 2007 – September 2009
    (Woods Hole Oceanographic Institution, 2013-05) Furey, Heather H. ; McKee, Theresa K. ; de Jong, Marieke F. ; Robbins, Paul E. ; Bower, Amy S.
    This is the final data report of all hydrographic station, mooring, and subsurface float data collected by the Woods Hole Oceanographic Institution in 2007-2009 during the Impact of Irminger Rings on Deep Convection in the Labrador Sea experiment (IRINGS). The objectives of IRINGS were to (1) to determine the full water column hydrographic and velocity structure of newlyformed Irminger Rings that have entered the interior Labrador Sea; (2) to observe how Irminger Ring core properties are modified by atmospheric forcing over their lifetime; and (3) to improve the interpretation of sea surface height (SSH) anomalies in terms of newly formed coherent heat containing Irminger Rings. The mooring deployment and recovery cruises were both on the R/V Knorr: KN192-01 in September 2007 and KN196-01 in September 2009, respectively. The single mooring held eight Aanderaa current meters (RCM-11), two Submerged Autonomous Launch Platforms (SALPs), and nine Seabird microcats (SBE37), deployed from 26 September 2007 through 27 September 2009, yeilding full water column (100-3000 meters) records of temperature, salinity, pressure, and velocity data for the two year period. The two SALP cages contained eleven APEX floats, and released some of these floats according to local oceanographic conditions, so as to seed the floats in passing Irminger Rings, and the remainder of floats as timed releases. Thirteen conductivity-temperature-depth (CTD) stations were taken on the mooring recovery cruise, creating a boundary current cross-section from the mooring site to Nuuk, Greenland.
  • Technical Report
    CLIMODE bobber data report : July 2005 - May 2009
    (Woods Hole Oceanographic Institution, 2010-03) Fratantoni, David M. ; McKee, Theresa K. ; Hodges, Benjamin A. ; Furey, Heather H. ; Lund, John M.
    This report summarizes direct observations of Eighteen Degree Water (EDW) subduction and dispersal within the subtropical gyre of the North Atlantic Ocean. Forty acoustically-tracked bobbing, profiling floats (“bobbers”) were deployed to study the formation and dispersal of EDW in the western North Atlantic. The unique bobber dataset described herein provides insight into the evolution of EDW by means of direct, eddy-resolving measurement of EDW Lagrangian dispersal pathways and stratification. Bobbers are modified Autonomous Profiling Explorer (APEX) profiling floats which actively servo their buoyancy control mechanism to follow a particular isothermal surface. The CLIVAR Mode Water Dynamics Experiment (CLIMODE) bobbers tracked the 18.5°C temperature surface for 3 days, then bobbed quickly between the 17°C and 19°C isotherms. This cycle was repeated for one month, after which each bobber profiled to 1000 m before ascending to the surface to transmit data. The resulting dataset (37/40 tracked bobbers; more than half still profiling as of January 2010) yields well-resolved trajectories, unprecedented velocity statistics in the core of the subducting and spreading EDW, and detailed information about the Lagrangian evolution of EDW thickness and vertical structure. This report provides an overview of the experimental procedure employed and summarizes the initial processing of the bobber dataset.