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				2

Date depart			9/25/99

Date arrive			10/3/99

Port depart			Hawaii

Port arrive			Dutch Harbor

Chief scientist			Hugh Milburn

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 25: Departure from Honolulu			

2. Oct 1: The system was noisy. The cell cap was changed. The system became less noisy. 			

3. Oct 3: Arrival to Dutch Harbor			





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:	

    Average:	1993.892972

    Stdev:	1.250162471

    Cert.value:	1988.64

    Correction:	-5.25



5. 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