SOOP New Century -- Metadata

Metadata

Investigators	Name: Shin-ichiro Nakaoka Organization: National Institute for Environmental Studies Address: 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan Phone: +81-29-850-2554 Email: nakaoka.shinichiro@nies.go.jp
Platform Type	Ship
Vessel Name	M/S New Century2
Geographical Coverage	North Pacific, North Atlantic
Ports of Call	Tahara Balboa Jacksonville Newark Cristobal Long Beach Benicia others
Bounds	North: 60 West: 120 South: 6 East: -60
Method Sampling and Equilibrator Design	Description: Depth of Sea Water Intake: 7 (m) Location of Sea Water Intake: bottom at stern Equilibrator Type: Tandem Type Equilibrator Equilibrator Volume: approx. 30L Water Flow Rate: 20 L/min Headspace Gas Flow Rate: 500 ml/min Vented: Yes Drying Method for CO2 in Water: Dehumidifier and Membrane Dryer
System Design/CO2 Sensor	Measurement Method: NDIR measurement of dry base xCO2 in seawater equilibrated air and atmosphere Manufacturer: Kimoto Electric Co., Osaka, Japan. Model: MOG-701 using LI-7000 CO2 Analyzer by LI-COR Frequency: 10sec (except during calibration routines) Accuracy of CO2 Water: 0.1ppm Accuracy of CO2 Air: 0.1ppm Precision of CO2 Water: 0.01ppm Precision of CO2 Air: 0.01ppm CO2 Sensor Calibration: Introducing CO2 standards to NIDR every 8 hours (10min each standard, 40 min. total) for air and 12 hours (15min each standard, 60 min total ) for seawater. Manufacturer of CO2 calibration gases: Taiyo Nippon Sanso Corporation, Japan. All of the standard gases are certified by NIES laboratory as WMO traceable standards. CO2 gas concentrations are approximately 360, 380, 400, 420ppm for air, 270, 330, 390, 450ppm with non-CO2 gas as 0 ppm for seawater.
Method References/CO2 in Marine Air	Measurement: yes, every 10 seconds Location and Height: 30m above sea level
Sea Surface Temperature	Location: 7m Manufacturer: Sea-Bird Electronics. Inc. Model: SBE38 Accuracy: ±0.001 degC Resolution: 0.00025 degC Typical Stability: 0.001 degC Calibration: Temperature sensor is calibrated by Sea-Bird Scientific every 4 years and confirmed that the calibrated equation is stable to measure temperature with accuracy of 0.05 deg C.
Sea Surface Salinity	Location: Equilibrator room Manufacturer: Sea-Bird Electronics. Inc. Model: SBE21 and SBE45 Accuracy: ±0.005 Resolution: 0.0002 Typical Stability: 0.003 Calibration: SBE21 Salinity is calibrated by sal bottle value which is measured by Guildline Portable Salinometer 8410A.
Equilibrator Temperature	Location: Inlet of Equilibrator Manufacturer: Sea-Bird Electronics. Inc. Model: SBE38 Accuracy: ±0.001 degC Resolution: 0.00025 degC Typical Stability: 0.001 degC Calibration: Temperature sensor is calibrated by Sea-Bird Scientific every 4 years and confirmed that the calibrated equation is stable to measure temperature with accuracy of 0.05 deg C.
Equilibrator Pressure	Location: Ocean Observation Room Manufacturer: COPAL electronics Model: PG-200 Accuracy: 0.5hPa Resolution: 0.1hPa Other comments: Differential pressure gauge between Equilibrator and room periodically checked with observation room pressure. Calibration is performed every cruise.
Atmospheric Pressure	Location: Bridge above sea level (32m) Manufacturer: COPAL electronics Model: PG-200 Accuracy: 0.5 hPa Resolution: 0.1 hPa Calibration: Calibration is performed every 6 hours by JMA certified barometer.