Note : The file  Frank_IO_trax.pdf  in this subdirectory is
         a plot ( pdf format ) of the 3 Indian Ocean cruises .

  Variables for Indcruz ( Franklin Indian Ocean Cruises ) experiments :

     date = year-month-day
     hour = decimal hour
     lat = latitude North ( - = South )
     lon = longitude East ( - = West )
     ws = true wind speed ( at 13m above surface )
     seaT = sea near-surface temperature from thermo-salinograph ( 2.4m depth )
     skinT = calculated skin temperature from COARE bulk model
     airT = air temperature ( at 11m for 94 & 96 data, at 7.1m for 99 data ) 
     qa = specific humidity ( at 11m for 94 & 96 data, at 7.1m for 99 data )
     swr = downwelling shortwave radiation
     lwr = downwelling longwave radiation
     shf = calculated sensible heat flux ( +ve out of ocean ) COARE bulk algorithm ( version 2.6a )
     lhf = calculated latent heat flux from COARE bulk algorithm ( version 2.6a )
     mf = calculated momentum flux ( wind stress ) from COARE bulk algorithm ( version 2.6a )
     rain = precipitation rate
     pres = atmospheric pressure
     wdir = wind direction at 17m above surface
     rshf = heat flux carried by rain
     rmf = momentum carried by rainfall
     shspeed = ship speed from log ( relative to water )
     head = ship's heading
     flag = possible contamination :
            0 = OK
            1 = relative wind astern
            2 = ship hove to

     Accuracies of measurements :

     Variable         Uncertainty    

       ws             +- 0.2 m/s
       wdir           +- 5 deg.
       seaT           +- 0.01 deg. C
       airT           +- 0.05 deg. C
       qa             +- 0.15 g/kg
       swr            +- 5 W/m^2
       lwr            +- 3 W/m^2
       shf            +- 2 W/m^2
       lhf            +- 8 W/m^2
       mf               10 %

    Data from :

      E. F. Bradley
      CSIRO Land & Water
      P O Box 1666
      Canberra, ACT 2601
      Australia
                  frank.bradley@cbr.clw.csiro.au