Index of /ftp/oceans/Tully_1989

Icon  Name                    Last modified      Size  Description
[DIR] Parent Directory                             -   
[DIR] BLOG_MET/               25-Feb-2008 15:00    -   
[DIR] BOTTLE_SST_SAL/         25-Feb-2008 15:00    -   
[DIR] PCO2-DATA-01_RAW/       25-Feb-2008 15:00    -   
[DIR] PCO2-DATA-02_CALC/      25-Feb-2008 15:00    -   
[DIR] SAIL_SST_SAL_NUTR_MET/  07-Mar-2008 14:38    -   
[   ] Tully_1989-45_north.csv 18-Feb-2008 16:56   59K  
[   ] Tully_1989-45_south.csv 18-Feb-2008 16:55   55K  
[IMG] Tully_1989.jpg          18-Feb-2008 17:09   85K  

Please cite this data set as:

Wong, C.S. 1989. Underway air and surface seawater pCO2 data measured during the 1989 on board the 
R/V John P. Tully operated by the Institute of Ocean Sciences (IOC), Canada
 -  http://cdiac.ornl.gov/oceans/VOS_Program/line_P.html. Carbon Dioxide Information Analysis Center, 
Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee. 


 Summary of Variables:

   1 = GYRD                 = Decimal Year
   2 = LATY                 = Scaled Latitude  [-90,+90]
   3 = LNGY                 = Scaled Lngitude  [-180,+180]
   4 = CRUZ_ID              = Cruise ID        yyyy-xx
   5 = AIR_XCO2_ppm         = Atm XCO2 (ppm) from original .COR data file
   6 = AIRCO2_FLAG          = "I" if interpolated value, otherwise blank
   7 = EQU_XCO2_ppm         = Equ XCO2 (ppm) from original .COR data file
   8 = AIR_pCO2_uatm_YHC    = Moisture Saturated Atm pCO2 (uatm) ... using equations of Y-H Chan
   9 = SEA_pCO2_uatm_YHC    = Moisture Saturated Sea pCO2 (uatm) ... using equations of Y-H Chan  (Weiss t-corr)
  10 = AIR_pCO2_uatm_Tak    = Moisture Saturated Atm pCO2 (uatm) ... using equations of Takahashi
  11 = SEA_pCO2_uatm_Tak    = Moisture Saturated Atm pCO2 (uatm) ... using equations of Takahashi (Takahashi t-corr)
  12 = AIR_fCO2_uatm        = Moisture Saturated Atm fCO2 (uatm)
  13 = SEA_fCO2_uatm        = Moisture Saturated Sea fCO2 (uatm)       (at insitu SST,SAL)
  14 = DEL_fCO2             = Delta fCO2 = (Sea fCO2 - Air fCO2)
  15 = L86_CO2FLX           = CO2 flux using MSat Delta fCO2 and equations of Liss & Merlivat (1986)
  16 = W92_CO2FLX           = CO2 flux using MSat Delta fCO2 and equations of Wanninkhof      (1992)   Quadratic
  17 = W99_CO2FLX           = CO2 flux using MSat Delta fCO2 and equations of Wanninkhof      (1999)   Cubic
  18 = EQT                  = Equilibrator Temperature (no observed value for some cruises ... so used fixed offset from SST)
  19 = SST                  = Surface Seawater Temp (C)
  20 = WARMING              = EQT - SST          (higher values indicate flow rate problems)
  21 = DQ_FLAG              = Data Quality flag, based on amt of warming
  22 = SAL                  = Surface Salinity   (no thermosal data on some cruises ... so used generously interpolated surface CTD data)
  23 = SLP                  = Barometer Pressure at Sea Surface  (kPa)
  24 = DBT                  = Dry Bulb Temp (ie Air Temp)  (C)
  25 = WBT                  = Wet Bulb Temp                (C)
  26 = RELH                 = Relative Humidity            (%)         Sensor often flaky
  27 = U10                  = Wind Speed                   (m/sec)     Corrected to 10m reference height

 pCO2 values by Y-H Chan and Takashi are redundant for comparison of Old method (YHC) and New method (Tak)

 fCO2 values are computed from pCO2 (Takahashi)

 Description of OSD DQ flags for Sea pCO2 based on amount of warming from SST to EQT

                 dt <= -1.5  ==> DQ Flag = "5"   (SYSTEM FAILURE)
         -1.5 <  dt <= -1.0  ==> DQ Flag = "4"   (BAD DATA)
         -1.0 <  dt <= -0.5  ==> DQ Flag = "3"   (SUSPICIOUS DATA)
         -0.5 <  dt <   1.5  ==> DQ Flag = "2"   (ACCEPTABLE DATA)
          1.5 <= dt <   2.0  ==> DQ Flag = "3"   (SUSPICIOUS DATA)
          2.0 <= dt <   3.0  ==> DQ Flag = "4"   (BAD DATA)
          3.0 <= dt          ==> DQ Flag = "5"   (SYSTEM FAILURE)