Dataset Title: Nathaniel B. Palmer JGOFS Data 

Cruise: NBP03-04a

Contact:
Jim Swift
UCSD/SIO, 0214
9500 Gilman Dr.
La Jolla, CA, USA 92093-0214
Phone:(619)534-3387
Fax:(619)534-7383
jswift@ucsd.edu



Data Description:

The JGOFS data set can be found on the distribution media in the file
/process/304Ajgof.tar.  The archive contains a single file produced each day
named jgDDD.dat.gz where DDD is the year-day the data was acquired. The ".gz"
extension indicates that the individual files are compressed before archiving.
The daily file consists of 22 columnar fields in text format described in the
table below. The JGOFS data set is obtained primarily by applying calibrations
to raw data and decimating to whole minute intervals. Several fields are
derived measurements from more than a single raw input.  For example, Course
Made Good (CMG) and Speed Over Ground (SOG) are calculated from gyro and GPS.
During the cruise, the JGOFS data set produces the daily data plots. Note: 
Null, unused, or unknown fields are indicated as "NAN" or as 9999 in the JGOFS
data. 

File Format: 
Field	Data	Units	   
01	GMT date	dd/mm/yy	   
02	GMT time	hh:mm:ss	   
03	NGL latitude (negative is South)	tt.tttt	   
04	NGL longitude (negative is West)	ggg.gggg	   
05	Speed over ground	Knots	   
06	GPS HDOP	-	   
07	Gyro Heading	Degrees (azimuth)	   
08	Course made good	Degrees (azimuth)	   
09	Mast PAR	mEinsteins/meters2 sec	   
10	Sea surface temperature	øC	   
11	Sea surface conductivity	siemens/meter	   
12	Sea surface salinity	PSU	   
13	Sea depth (uncorrected, calc. sw sound vel. 1500 m/s)	meters 	   
14	True wind speed (port windbird)	meters/sec	   
15	True wind direction (port windbird)	degrees (azimuth)	   
16	Ambient air temperature	øC	   
17	Relative humidity	%	   
18	Barometric pressure	mBars	   
19	Sea surface fluorometry	volts (0-5 FSO)	   
20	Not used	-	   
21	PSP	W/m2	   
22	PIR	W/m2