General Cruise Information, 			
Underway SOMMA:  Operations, Data Reduction and Quality Control		

General Cruise Information:			
Ship				Ronald H. Brown
Year				1998
Cruise name			RB-98-03 (VENTS)
Leg				3
Date depart			8/26/98
Date arrive			9/20/98
Port depart			Newport
Port arrive			Victoria
Chief scientist			Robert Embley
pCO2 operator			Jim Gendron
pCO2 (responsible person)	Robert Castle
TCO2 (responsible person)	Esa Peltola
Chl (responsible person)	Jason Masters
O2 (responsible person)		George Berberian


Underway SOMMA (AOML-1) Operations, Data Reduction and Quality Control:		
			
Operations:			
1. Aug. 26: 	Departure from Newport.		
		The computer froze at 23:52		
2. Aug. 28:	The system was noisy, but ran overnight	
3. Sept. 8:	The readings were unstable		
4. Sept. 9:	Someone unplugged the compressor. It was recognized at 4:09		
5. Sept. 13:	The system was unstable.		
6. Sept. 20:	Arrival to Victoria		

Data Reduction and Quality Control:			
1. Salinity correction was applied for the samples.			
2. CRM correction:			
    Batch #42 was used during the entire cruise			
    Average: 			1982.71
    Stdev: 			3.41
    Number of standards:	6
    Certified Value:		1985.10
    Correction:			2.4
3. LAT and LONG were added.			
4. Quality control:			
    The following plots were created and used to evaluate the data:			
    TCO2 vs. Julian Time			
    TCO2 vs. LAT			
    TCO2 vs. LONG			
    Chlorophyll  vs. Julian Time			
    Chlorophyll  vs. LAT			
    Chlorophyll  vs. LONG
    Chlorophyll vs. TCO2
    Temperature vs. TCO2
    Salinity vs. TCO2
    fCO2 (water) vs. TCO2
    fCO2 (air) vs. TCO2