******************************************************************************* NOTE: This ReadMe is a combination of the five individual ReadMe's (one for each buoy). ******************************************************************************* Arctic Ocean ARGOS Ocean Buoys during SHEBA 1997-98 - Surface Heat Budget of the Arctic Ocean - MicroCat Buoy 07100 During SHEBA, the Pacific Marine Environmental Laboratory (PMEL) deployed three data buoys forming an "inner buoy triangle' about the central SHEBA camp. The Polar Science Center at the University of Washington collaborated by suspending a single SeaBird MicroCAT SBE 37SM Ocean Conductivity and Temperature Recorderfrom each of these buoys at ten meters depth beneath the ice. Conductivity and temperature were transmitted via the ARGOS satelite system along with the buoys other measurements. The buoy's positions were also determined by the ARGOS system. In addition, each MicroCAT recorded the entire temperature and conductivity series internally. Deployed in early October 1997, these buoys often lived a short and brutal life due to ice activity, but 07100 was the exception, continuing to transmit until 3 July 1998. Since the final position was known, it was possible to visit the site in mid-August and actually recover the MicroCAT. As a result, we were able to recover and present here the complete mixed layer temperature and conductivity record as recorded by the MicroCAT itself. Position is marked missing when the ARGOS system was unable to provide it. The data file is offered here in two forms, as an ASCII matrix (Microcat07100) and as a MATLAB mat-file (Microcat07100.mat). The file is 7 columns wide, as follows. Column: 1 - Observation time (Day of 1997. 1998 days are thus 365 greater than their day of 1998 number. For example, 2 January 1998 12GMT = 367.500) 2 - Latitude (¡North) 3 - Longitude (¡East) 4 = Temperature (¡C) 5 = Conductivity (mmhos) 6 = Salinity (assuming pressure-depth = 10 decibar) (psu) 7 = Sigma-theta Following the MATLAB conventions, missing data in the mat-file is filled with floating point Not-a-Numbers (NaN). Missing data in the ASCII file is filled with the obviously bad value -999.99 in any column. Questions concerning the ocean measurements should be directed to- James Morison, Principal Investigator (morison@apl.washington.edu) or Roger Andersen (roger@apl.washington.edu) Polar Science Center Applied Physics Laboratory University of Washington 1013 NE 40th Seattle, WA 98105-6698 USA Telephone (206) 543-6613 FAX (206) 616-3142 Questions concerning these buoys other measurements should be directed to- James Overland, Principal Investigator (overland@pmel.noaa.gov) 206/526-6795 or Sigrid Salo (salo@pmel.noaa.gov) 206/526-6802 ******************************************************************************* Arctic Ocean ARGOS Ocean Buoys during SHEBA 1997-98 - Surface Heat Budget of the Arctic Ocean - MicroCat Buoy 20726 During SHEBA, the Pacific Marine Environmental Laboratory (PMEL) deployed three data buoys forming an "inner buoy triangle' about the central SHEBA camp. The Polar Science Center at the University of Washington collaborated by suspending a single SeaBird MicroCAT SBE 37SM Ocean Conductivity and Temperature Recorderfrom each of these buoys at ten meters depth beneath the ice. Conductivity and temperature were transmitted via the ARGOS satelite system along with the buoys other measurements. The buoy's positions were also determined by the ARGOS system. In addition, each MicroCAT recorded the entire temperature and conductivity series internally. Deployed in early October 1997, this buoy (20726) ceased transmitting regularly about 15 January 1998, although occasional ARGOS hits gave some hope it might be found and recovered. Repeated efforts to find it in early summer 1998 were unsuccessful. The data file is offered here in two forms, as an ASCII matrix (Microcat20726) and as a MATLAB mat-file (Microcat20726.mat). The file is 7 columns wide, as follows. Column: 1 - Observation time (Day of 1997. 1998 days are thus 365 greater than their day of 1998 number. For example, 2 January 1998 12GMT = 367.500) 2 - Latitude (¡North) 3 - Longitude (¡East) 4 = Temperature (¡C) 5 = Conductivity (mmhos) 6 = Salinity (assuming pressure-depth = 10 decibar) (psu) 7 = Sigma-theta Following the MATLAB conventions, missing data in the mat-file is filled with floating point Not-a-Numbers (NaN). Missing data in the ASCII file is filled with the obviously bad value -999.99 in any column. Questions concerning the ocean measurements should be directed to- James Morison, Principal Investigator (morison@apl.washington.edu) or Roger Andersen (roger@apl.washington.edu) Polar Science Center Applied Physics Laboratory University of Washington 1013 NE 40th Seattle, WA 98105-6698 USA Telephone (206) 543-6613 FAX (206) 616-3142 Questions concerning these buoys other measurements should be directed to- James Overland, , Principal Investigator (overland@pmel.noaa.gov) 206/526-6795 or Sigrid Salo (salo@pmel.noaa.gov) 206/526-6802 ******************************************************************************* Arctic Ocean ARGOS Ocean Buoys during SHEBA 1997-98 - Surface Heat Budget of the Arctic Ocean - MicroCat Buoy 22206 During SHEBA, the Pacific Marine Environmental Laboratory (PMEL) deployed three data buoys forming an "inner buoy triangle' about the central SHEBA camp. The Polar Science Center at the University of Washington collaborated by suspending a single SeaBird MicroCAT SBE 37SM Ocean Conductivity and Temperature Recorderfrom each of these buoys at ten meters depth beneath the ice. Conductivity and temperature were transmitted via the ARGOS satelite system along with the buoys other measurements. The buoy's positions were also determined by the ARGOS system. In addition, each MicroCAT recorded the entire temperature and conductivity series internally. Deployed in early October 1997, this buoy (22206) ceased transmitting about 20 November 1997. It could not be recovered. The data file is offered here in two forms, as an ASCII matrix (Microcat22206) and as a MATLAB mat-file (Microcat22206.mat). The file is 7 columns wide, as follows. Column: 1 - Observation time (Day of 1997) 2 - Latitude (¡North) 3 - Longitude (¡East) 4 = Temperature (¡C) 5 = Conductivity (mmhos) 6 = Salinity (assuming pressure-depth = 10 decibar) (psu) 7 = Sigma-theta Following the MATLAB conventions, missing data in the mat-file is filled with floating point Not-a-Numbers (NaN). Missing data in the ASCII file is filled with the obviously bad value -999.99 in any column. Questions concerning the ocean measurements should be directed to- James Morison, Principal Investigator (morison@apl.washington.edu) or Roger Andersen (roger@apl.washington.edu) Polar Science Center Applied Physics Laboratory University of Washington 1013 NE 40th Seattle, WA 98105-6698 USA Telephone (206) 543-6613 FAX (206) 616-3142 Questions concerning these buoys other measurements should be directed to- James Overland, Principal Investigator (overland@pmel.noaa.gov) 206/526-6795 or Sigrid Salo (salo@pmel.noaa.gov) 206/526-6802 ******************************************************************************* Arctic Ocean ARGOS Salinity Buoys during SHEBA 1997-98 - Surface Heat Budget of the Arctic Ocean - Polar Ocean Profiler Buoy 12795 During SHEBA, the Polar Science Center at the University of Washington deployed 2 ARGOS Polar Ocean Profiler data buoys in ice floes approximately 50km from the SHEBA ship. These were to measure horizontal variation of oceanic parameters. Each buoy consists of a tube mounted vertically through the ice from which a cable dangled down into the ocean measuring pressure, temperature, and conductivity at 6 levels, nominally 10M, 25M, 40M, 70M, 110M, and 155M. Atmospheric pressure and temperature were measured up in the tube. All measurements were reported every 12 minutes via the ARGOS satellite system, which also calculated the buoy's position. POP Buoy 12795 installed at Site 1 north of the SHEBA camp, lasted the full year, and was recovered in early October 1998. Early in January, the SeaBird SeaKitten sensor package at level 2 flooded and the measurements at that level were lost for the remainder of the drift. Before flooding, the conductivity at level 2 appeared unreasonably high. The conductivity from level 4 was also anomolously high during the entire drift. We are seeking an explanation (calibration?) and hope to revise these data later. For the moment, conductivity is marked missing from levels 2 and 4. The data file is offered here in two forms, as an ASCII matrix (POPBuoy12795) and as a MATLAB mat-file (POPBuoy12795.mat). The file is 35 columns wide, as follows. Column: 1 - Observation time (Day of 1997. 1998 days are thus 365 greater than their day of 1998 number. For example, 2 January 1998 12GMT = 367.500) 2 - Latitude (¡North) 3 - Longitude (¡East) 4 - Air Temperature (¡C) 5 - Air Pressure (mb) 6-11 = Pressure(levels 1-6) (dbar) 12-17 = Temperature(levels 1-6) (¡C) 18-23 = Conductivity(levels 1-6) (mmhos) 24-29 = Salinity(levels 1-6) (psu) 30-35 = Sigma-theta(levels 1-6) Following the MATLAB conventions, missing data in the mat-file is filled with floating point Not-a-Numbers (NaN). Missing data in the ASCII file is filled with the obviously bad value -999.99 in any column. Questions should be directed to- James Morison, Principal Investigator (morison@apl.washington.edu) or Roger Andersen (roger@apl.washington.edu) Polar Science Center Applied Physics Laboratory University of Washington 1013 NE 40th Seattle, WA 98105-6698 USA Telephone (206) 543-6613 FAX (206) 616-3142 End-of-ReadMe document ******************************************************************************* Arctic Ocean ARGOS Salinity Buoys during SHEBA 1997-98 - Surface Heat Budget of the Arctic Ocean - Polar Ocean Profiler Buoy 12796 During SHEBA, the Polar Science Center at the University of Washington deployed 2 ARGOS Polar Ocean Profiler data buoys in ice floes approximately 50km from the SHEBA ship. These were to measure horizontal variation of oceanic parameters. Each buoy consists of a tube mounted vertically through the ice from which a cable dangled down into the ocean measuring pressure, temperature, and conductivity at 6 levels, nominally 10M, 25M, 40M, 70M, 110M, and 155M. Atmospheric pressure and temperature were measured up in the tube. All measurements were reported every 12 minutes via the ARGOS satellite system, which also calculated the buoy's position. POP Buoy 12796 installed at Site 2 southwest of the SHEBA camp, operated normally only until 15 November 1997, when it was visited by a polar bear who actually tore off the antenna top hat and caused severe damage. 12796 did continue to transmit, providing a record of its position and atmospheric pressure, but none of the ocean channels got through after the bear's visit. Two visits by helicopter during May 1998 attempted to make repairs, but were not successful, and at that point, the buoy electronics were recovered. During 12796's relatively short life, the conductivity from the SeaBird SeaKitten sensors at levels 1 and 3 appeared unreasonably high. We are seeking an explanation (calibration?) and hope to revise these data later. For the moment, conductivity is marked missing from levels 1 and 3. The data file is offered here in two forms, as an ASCII matrix (POPBuoy12796) and as a MATLAB mat-file (POPBuoy12796.mat). The file is 35 columns wide, as follows. Column: 1 - Observation time (Day of 1997. 1998 days are thus 365 greater than their day of 1998 number. For example, 2 January 1998 12GMT = 367.500) 2 - Latitude (¡North) 3 - Longitude (¡East) 4 - Air Temperature (¡C) 5 - Air Pressure (mb) 6-11 = Pressure(levels 1-6) (dbar) 12-17 = Temperature(levels 1-6) (¡C) 18-23 = Conductivity(levels 1-6) (mmhos) 24-29 = Salinity(levels 1-6) (psu) 30-35 = Sigma-theta(levels 1-6) Following the MATLAB conventions, missing data in the mat-file is filled with floating point Not-a-Numbers (NaN). Missing data in the ASCII file is filled with the obviously bad value -999.99 in any column. Questions should be directed to- James Morison, Principal Investigator (morison@apl.washington.edu) or Roger Andersen (roger@apl.washington.edu) Polar Science Center Applied Physics Laboratory University of Washington 1013 NE 40th Seattle, WA 98105-6698 USA Telephone (206) 543-6613 FAX (206) 616-3142