BATHY

Report of bathythermal observation

  
Section 1

  
JJYY (JJXX) YY MM
  J GGgg/ Qc LaLaLaLa
  LoLoLoLoLo
  (iu dd
  ff) (4sn
  TTT)
  
Section 2

  
8888 k1 IxIxIx XRXR z0z0 T0T0T0 z1z1
  T1T1T1 .... znzn TnTnTn 999zz z1z1 T1T1T1 .... znzn
  TnTnTn (00000)
  
Section 3

  
(66666 (1ZdZdZdZd)
  (k5 DcDc VcVc))
  
Section 4

  
D.....D or 99999 A1
  bw nbnbnb

YY


Day of the month (UTC), with 01 indicating the first day, 02 the second day,etc. on which the actual time of observation falls

MM


Month of the year (UTC), i.e. 01=January; 02=February, etc.

J


Units digit of the year (UTC), i.e. 1994 = 4

GGgg

Time of observation, in hours and minutes (UTC)
(In BATHY and TESAC, GGgg is the time of launching the bathythermograph.)

Qc

Quadrant of the globe.
Code figure Latitude Longitude
1 North East
3 South East
5 South West
7 North West

Note: The choice is left to the observer in the following cases:
When the ship is on the Greenwich meridian or the 180th meridian (LoLoLoLo = 0000 or 1800 respectively):
Qc = 1 or 7 (northern hemisphere) or
Qc = 3 or 5 (southern hemisphere);
When the ship is on the Equator (LaLaLa = 000):
Qc = 1 or 3 (eastern longitude) or
Qc = 5 or 7 (western longitude).



LaLaLaLa

Latitude, in degrees and minutes

LoLoLoLoLo

Longitude, in degrees and minutes


iu

Indicator for units of wind speed and type of instrumentation

Code
figure		 Units used Instruments certified or otherwise
0 Metres per second Land stations, and ships with certified instruments
1 Knots Land stations, and ships with certified instruments
2 Metres per second Ships with uncertified instruments
3 Knots Ships with uncertified instruments

dd


True dirction, in tens of degrees, from which wind is blowing

Code			
figure				
00	Calm		
01	5-14
02	15-24
03	25-34

etc.	etc.

36	335-4
99	Variable, or all directions or unknown or waves 
	confused, direction indetermininate


ff


Wind speed, in units indicated by iw

sn


Sign of the data


code
figure
0	Positive or zero
1	Negative




TTT


Air temperature, in tenths of a degree Celsius, its sign being given by sn


k1


Indicator for digitization


Code
figure
7	Values at selected depths 
	(data points fixed by the instrument or 
	selected by any other method)

8	Values at significant depths 
	(data points taken from traces at 
	significant depths)




IxIxIx


Instrument type for XBT, with fall rate equation coefficients. (When the first group of the report is JJXX, this group is not reported.)




Notes:
(1)	The depth is calculated from coefficients 
	a and b and the time t, as follows:   
	z = at + 10-3 bt2.
(2)	All unassigned numbers are reserved.




XRXR


Recorder type (When the first group of the report is JJXX, this group is not reported.)




z0z0
z1z1
....
znzn


Significant depths, in meters, starting with the surface


T0T0T0
T1T1T1
......
TnTnTn


Temperature, in tenths of a degree Celsius, at specified depths starting with sea surface

For negative temperatures, 500 shall be added to the absolute value of the temperature in tenths of a degree Celius



zz


Depth, in hundreds of meters, starting with the surface

00000


The group 00000 shall be included only when the temperature at the lowest depth of the sounding, which is reported in the last temperature group, is actually the bottom layer temperature.

ZdZdZdZd


Total water depth, in meters.


k5


Indicator for the method of current measurement

Code
figure
2	GEK (Geomagnetic ElectroKinetograph)
3	Ship's set and drift determined by fixes 
	3-6 hours apart
4	Ship's set and drift determined by fixes 
	more than 6 hours but less than 12 hours apart



DcDc


Surface current direction, in tens of degrees.

VcVc


Surface current speed, in tenths of a knot.

D.....D


Ship's call sign consisting of three or more alphanumeric characters



A1


WMO Regional Association area in which buoy, drilling rig or oil- or gas-production platform has been deployed (1 - Region I; 2 - Region II, etc.)


bw


Sub-area belonging to the area indicated by A1





nbnbnb


Type and serial number of buoy

Note: When the first group is JJXX, the group IxIxIxXRXR is not reported.