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Vertical temperature profiles were obtained with XBTs (Expendable Bathythermograph) during the first 24 HOT cruises. XBT data are distributed in ASCII format. A summary of profiles taken on a cruise are listed in the hot#xbt.hdr (where # is the cruise number) file. The first line specifies the cruise number. The second line labels the columns. The remaining records contain information on each profile.
Column Format Item
1- 3 i3 XBT #
4- 7 i4 Day of the month
8-11 a4 Month
12-14 i3 Year
15-18 i4 Time (hour)
20-21 i2 Time (minute)
23-24 i2 Time (second)
25-31 f6.2 Latitude
32-32 a1 N/S (North/South)
33-40 f7.2 Longitude
41-41 a1 E/W (East/West)
42-46 a5 Probe type
47- a Comments
FORTRAN FORMAT(i3,i4,a4,i3,i4,1x,i2,1x,i2,f6.2,a1,f7.2,a1,a5,a)
C FORMAT "%d %d %c4 %d %d %c %i2 %c %d %6.2f %c %7.2f %c %5s %s"
Data for each profile are stored in a separate file. A file's name can
be determined by the concatenation of 1 character version indicator (usually
'a'), 1 digit probe type, profile number, and a file extension of dt2.
For example, HOT-4, drop 10, probe type T-7, would be found in a710.dt2.
The first nine records of a XBT file contain header information:
Record Contains Description
1: Ship: ___________ Ship name
2: Cruise: HOT-__ Hot cruise number
3: XBT #: _ Drop number
4: Date: __ ___ __ Time: __:__:__ Z Day, month, year, hh:mm:ss
5: Probe T-_ Probe type
6: Latitude: __ __._ _ Degrees, minutes, N or S
7: Longitude: ___ __._ _ Degrees, minutes, E or W
8: Depth Temperature Labels for data columns
9: m ITS-90 Unit header for data columns.
The remaining records contain XBT data:
Data Record Format:
Column Format Item
1- 6 f6.2 Depth (Meters)
7-17 f6.3 Temperature (Degrees Celsius,
International Temperature Scale of 1990)
FORTRAN FORMAT(f6.2, f11.3)
C FORMAT "%f %f"
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