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

General Cruise Information:			
Ship				Ronald H. Brown
Year				1999
Cruise name			RB-99-06 (NOPP)
Leg				1
Date depart			9/13/99
Date arrive			9/21/99
Port depart			Kwajalein
Port arrive			Hawaii
Chief scientist			Jim Butler
pCO2 operator			Marilyn Roberts
pCO2 (responsible person)	Robert Castle
TCO2 (responsible person)	Esa Peltola
Chl (responsible person)	Robert Castle
O2 (responsible person)		George Berberian


Underway SOMMA (AOML-2) Operations, Data Reduction and Quality Control:			
			
Operations:			
1. Sept 13: Departure from Kwajalein			
2. Sept 14: Problems filling the pipette. The pressure was increased using a tubing squeezer.			
3. Sept 15: The system had begun noisy and had shut down during the night.			
            Gas  standard cylinder had completely drained out.			
4. Sept 16: The system was noisy again and did not run over night.			
            An other gas cylinder drained out of gas. It was replaced with a new one.			
5. Sept 17: System ran through the night. The pressure of the standard gas cylinder had dropped 300 psi.			
            The stainless steal tubing and fittings from the gas cylinder to SOMMA were changed.			
6. Sept 18: The system was noisy during the night.			
            The stainless steal tubing and fittings to CO2 ON/OFF toggle valve under sample bath were changed.	
7. Sept 19: The system ran all night.	
8. Sept 20: The system ran all night.	
9. Sept 21: The system ran all night. Arrival to Honolulu.	


Data Reduction and Quality Control:	
1. LAT, LONG and TSG S were merged.	
2. Salinity correction was applied for the samples. SOMMA program had calculated the CRM values using	
    certified salinity values and therefore no salinity correction was made for the CRMs.	
3. CRM correction:	
    Batch #43 was used during the entire cruise	
    Average:		1995.667427
    Stdev:		0.872422555
    Certified Value:	1988.64
    Correction:		-7.03
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