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