COARE CTD Data Format Description                                                                                     COARE CTD data were collected using a SeaBird CTD at the maximum sampling rate of 24 samples per second (24 Hz). They are         screened for errors and processed to 2 dbar averages. Details of the CTD processing can be found in HOT Data Report #1.                                                                            CTD data are written to files using formats specified by the     WOCE Hydrographic Programme Office. These formats are based on   NODC formats, and are detailed in the WHP Office Report WHPO     90-1, available from Dr. Terrence Joyce, Director, WHP Office,   Dept. of Physical Oceanography, WHOI, Woods Hole, MA 02543.                                                                       Data consist of pressure, temperature and salinity for all       casts. Details of this format are given in the file Readme.formatBriefly, the format consists of a 6-line header followed by      the data. The header is self-documenting, and contains cast      information such as cruise, station, cast number, date, etc. The data records are written so that they can be read with a simple  FORTRAN read statement.                                                                                                           The cruise and position information are given in the COA1.SUM    file.  The EXPOCODE, station number and cast number are used to  cross-reference the "SUM" file to the "CTD" files.  Please refer to Readme.sum for a description of the EXPOCODE.                                                                                  Temperature is reported in ITS-90 units. Since temperature       sensor calibrations were done in IPTS-68 units, and the UNESCO   routines require IPTS-68 temperature, all intermediate           processing was done in IPTS-68. As a final step, temperature and potential temperature were converted to ITS-90 using             t_90 = 0.99976 t_68.                                                                                                              The CTD data are then followed by the number of observations,    which, when positive is the number of 24-Hz data points averaged within the respective 2 dbar bin. Sometimes, especially near the start of a cast, the number of salinity data points in a bin is  less than the number of temperature data points (because air     bubbles affect the conductivity measurement more than they affecttemperature). When this occurs, the number of data points going  into the salinity average is reported.                                                                                            The last column contains the quality word.  The fifth header lineunderscores thoses parameter requiring quality bytes.  The qualitvalues are defined as follows:                                                                                                    	Quality           Definition                                    	Value                                                           	   2     Acceptable measurement.                                	   3     Questionable measurement.                              	   4     Bad measurement.                                       	   5     Not reported.                                          	   6     Interpolated value.                                    	  7-8    Not assigned for CTD data.                             	   9     Not sampled.