March 04, 2013

Files included in this data set:
--------------------------------
README_SIO_Indian_2012.txt (this file)
SIO_Indian_2012.tar.gz

Principal Investigator:
-----------------------
	Dr. Dean Roemmich
	University of California, San Diego
	Scripps Institution of Oceanography
	9500 Gilman Drive, Dept 0230
	La Jolla, CA 92093-0230
	voice: 858-534-2307
	fax: 858-534-9820
	email: droemmich@ucsd.edu
	secondary contact: Lisa Lehmann (llehmann@ucsd.edu)

Program: High Resolution XBT Network (www-hrx.ucsd.edu)
--------

Lines:
------
Our name   Conventional name
--------   -----------------
i15	   IX02, IX15, IX21

Ship name and callsign:
-------------------------
i151204:           Hoegh St. Petersburg (LAII7) (1 transect)
i151207 & i151210: Hoegh Seoul          (LAD06) (2 transects)

NOTE: XBT launch height:
i151204 *Approximate* XBT launch height from SIO Autolauncher (AL) AND 
        Hand launcher (HL) for Hoegh St. Petersburg = 25m
        No AL height measurements were taken aboard St. Petersburg. This is
        an estimate from measurements taken aboard the "sister" ship Hoegh
        Seoul (both are Car Carriers).

i151207 Hoegh Seoul AL/HL XBT launch height: begin cruise = 24.88m, end cruise = 25.25m
i151210 Hoegh Seoul AL/HL XBT launch height: begin cruise = 25.07m, end cruise = 25.60m


Data Description:
-----------------
The unix compressed tar file contains all SIO Indian Ocean XBT data for the year 2012.

To uncompress on a unix machine:
	gunzip SIO_Indian_2012.tar.gz
To untar:
	tar xvf SIO_Indian_2012.tar

Creates directory SIO_Indian_2012, containing 3 cruise dated directories (yymm). 

Past examples: such as "0811" and "0910".  0910 stands for October 2009.
Each cruise dated directory contains "e" files (eg s370910e.003) which
are ascii files containing xbt drop data, and a synopsis data file
(eg s370910.dat) containing position info for each xbt drop.

Note this data set used Sippican Deep Blue XBT's using the
old fall rate coefficients:  a=6.472, b=-2.16

Recorder type= MK21

Software: Amverseas
Quality control:
----------------
We followed the CSIRO Marine Lab Report 221 "Quality Control Cookbook for
XBT Data" to mark:

Data Quality Class:
 Class 0 = No QC done
 Class 1 = Good data
 Class 2 = Probably good data
 Class 3 = Probably bad data
 Class 4 = Bad data
 Class 5 = Changed

Data Quality Code: 
 Class 1: EF = Eddy/Front
 Class 1: IV = Inversion confirmed
 Class 1: NU = Inversion in ML (nub confirmed)
 Class 1: ST = Fine structure step-like confirmed

 Class 2: BO = Bowing in ML
 Class 2: FS = Fine Structure Probable
 Class 2: HB = Hit Bottom isotherm boundary layer 
 Class 2: LE = Leakage Possible
 Class 2: PI = Inversion Probable
 Class 2: PL = Premature Launch (false splash)
 Class 2: PS = Fine Structure Step-Like Probable
 Class 2: SA = Surface Anomaly, Fine Structure Special Case
 Class 2: TD = Temperature Difference at Depth
 Class 2: WS = Wire Stretch Possible

 Class 3: HB = Hit Bottom Reject
 Class 3: IP = Insulation Penetration Reject
 Class 3: LE = Leakage Reject
 Class 3: TO = Temperature Offset Reject
 Class 3: WS = Wire Stretch Reject

 Class 4: HF - High Frequency Reject
 Class 4: SP - Spike Reject
 Class 4: WB - Wire Break Reject
 Class 4: TP - Test Probe Reject

 Class 5: SP = Spike (Changed)
 Class 5: HF = High Frequency Interference (Changed)
 Class 5: IP = Insulation Penetration (Changed)

SIO "e" file format   
----------------

Sample of the first 5 lines (records) of "e" file (p371110e.062):
---------cut here-------------------------
  062 051 06 WDD6033  33.802 210.496 2
 09-10-2011  18:25:55 DE088452 1130487 03-22-2010
  1 23334 1
  3 23294 1
  5 23294 1
---------cut here-------------------------

Sample of lines (records) 27-34 of "e" file (p371110e.062):
---------cut here-------------------------
 27  49 18502 1
 28  51 18361 5 IP 17753
 29  53 18220 2
 30  55 17830 2
 31  57 17084 2
 32  59 16997 5 IP 16430
 33  61 16910 5 IP 16120
 34  63 16823 2
---------cut here-------------------------

record 1:
column	notes 
1-2	blank
3-5	drop number in cruise (062)
6 	blank
7-9     WMO Code Table 1770 Instrument type, 051 = Sippican Deep Blue, a=6.472, b=-2.16
10	blank
11-12	WMO Code Table 4770 Recorder Type, 06 = Sippican MK21
13      blank
14-20	ship callsign (WDD6033) will always start in column 14
21      blank
22-28 	latitude in decimal, south negative (f7.3) (Assume Class 1)
29	blank
30-36	longitude in decimal, 0-360 East (f7.3) (Assume Class 1)
37	blank
38      SIO launcher tube number (1-6, 0=hand launched)

record 2:
column	notes
1	blank
2-11	date of drop (DD-MM-YEAR) (Assume Class 1)
12-13	blank
14-21	time of drop (HH:MM:SS) (Assume Class 1)
22      blank
23-30   SEASID (character*8) (if unknown= blank or -0000001 or 00000000 or -1) (Assume Class 2)
31      blank
32-38   XBT serial number (if unknown= blank or -000001 or 0000000 or -1) (Assume Class 2)
39      blank
40-49   XBT Date of Manufacture (MM-DD-YEAR) OR "XBT Date of Manufacture Beginning of Batch Run"
            (if unknown=blank or 00/00/0000) (Assume Class 2)
  *NOTE* date of drop is DD-MM-YYYY and Date of Manufacture is MM-DD-YYYY ****
  ****** Difference due to historical bookkeeping reasons***********
        

record 3- end of file:
column	notes
1-3	depth in meters (in 2 m increment samplings)
4	blank
5-9	temperature in degrees Celsius (multiply by 0.001)
10	blank
11	Data Quality Class (see above)
12	blank
13-14	Quality Control Code (present if marked by reviewer, otherwise blank) (character*2)
15	blank
16-20	blank unless Data Quality Class = 5 (Changed), then it's the original temperature in 
	      degrees Celsius (multiply by 0.001)

Deconstruct "e" filename: p371110e.062:
--------------------------
p37  = PX37
1110 = YYMM
e    = edited data
062  = drop number

--------------------------------------------------------------
The following is likely no longer needed as all this information is now
coded into the "e" file: 

Synopsis data file format:
--------------------------
Each cruise directory has a <cruise>.dat file.  <cruise> is replaced
by line (p50 or p81) and date (9603, 9606, etc) to get
a filename such as p509603.dat.  An example format of p509603.dat:

 001     1 13.427  9/ 3/96 12:58: 6   21.584  201.628   1    1    -2
 002     2  9.213  9/ 3/96 13: 7:43   21.626  201.637   1    1    -2
 003     3  5.919  9/ 3/96 13:17:13   21.667  201.648   1    1    -2
 004     4  4.983  9/ 3/96 13:35:47   21.751  201.667   1    1    -2
 005     5  5.038  9/ 3/96 13:54:32   21.834  201.690   1    1    -2

column  notes
1       blank
2-4     drop number
5-9     ignore
10      launcher tube number (e file may be = 0, *.dat file correct)
11-17   700 m temperature (or last temperature recorded)
18      blank
19-26   date (DD/MM/YY)
27      blank
28-35   time (HH:MM:SS)
36-37   blank
38-44   latitude in decimal (South negative) (f7.3)
45-46   blank
47-53   longitude in decimal (0-360 East) (f7.3)
54-60   ignore
61-62   "good data" code: 1 = good, -1 = bad: no e file exists
                          2 = good (maybe Sparton probe),-2 = bad: no e file exists
                          -4 = test cannister
63-80   ignore
