Feb 22 2008 @0952


 Summary of Channel Names:

   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_Tak    = Moisture Saturated Atm pCO2 (uatm) ... using equations of Takahashi
   9 = SEA_pCO2_uatm_Tak    = Moisture Saturated Atm pCO2 (uatm) ... using equations of Takahashi (Takahashi t-corr)
  10 = EQT                  = Equilibrator Temperature (no observed value for some cruises ... so used fixed offset from SST)
  11 = SST                  = Surface Seawater Temp (C)
  12 = WARMING              = EQT - SST          (higher values indicate flow rate problems)
  13 = DQ_FLAG              = Data Quality flag, based on amt of warming
  14 = SAL                  = Surface Salinity   (no thermosal data on some cruises ... so used generously interpolated surface CTD data)
  15 = SLP                  = Barometer Pressure at Sea Surface  (kPa)
  16 = DBT                  = Dry Bulb Temp (ie Air Temp)  (C)
  17 = WBT                  = Wet Bulb Temp                (C)
  18 = RELH                 = Relative Humidity            (%)         Sensor often flaky
  19 = U10                  = Wind Speed                   (m/sec)     Corrected to 10m reference height
  20 = Sequence Number      = 1,2,3,...

 pCO2 values are computed from pCO2 (Takahashi, 2000)

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

                 dt <= -1.5  ==> DQ Flag = "e"   (SYSTEM FAILURE)
         -1.5 <  dt <= -1.0  ==> DQ Flag = "d"   (BAD DATA)
         -1.0 <  dt <= -0.5  ==> DQ Flag = "c"   (SUSPICIOUS DATA)
         -0.5 <  dt <   1.5  ==> DQ Flag = " "   (ACCEPTABLE DATA)
          1.5 <= dt <   2.0  ==> DQ Flag = "c"   (SUSPICIOUS DATA)
          2.0 <= dt <   3.0  ==> DQ Flag = "d"   (BAD DATA)
          3.0 <= dt          ==> DQ Flag = "e"   (SYSTEM FAILURE)

Warning - auxiliary data (SST,SAL,Met) were heavily interpolated for the whole data set - and data used for LineP portion.
        - fresh look at aux data may be necessary for use with Arctic portion of the data where aux data is more variable.

J.Page