Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from underway - surface observations using Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement and other instruments from the Ryofu Maru II in the

NODC Accession 0081046 includes chemical, meteorological, physical and underway - surface data collected from Ryofu Maru II in the Bismarck Sea, East China Sea (Tung Hai), North Pacific Ocean, Philippine Sea, Sea of Japan and South Pacific Ocean from 1989-11-17 to 2011-03-14 and retrieved during cruise 49RY19891117. These data include BAROMETRIC PRESSURE, CARBON DIOXIDE - AIR, Partial pressure (or fugacity) of carbon dioxide, SALINITY and SEA SURFACE TEMPERATURE. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement. These data were collected by Akira Nakadate and Shu Saito of Japan Meteorological Agency; Pollutants Chemical Analysis Center; Marine Division; Global Environment and Marine Depertment as part of the VOS R/V Ryofu Maru Lines data set.

The Global Volunteer Observing Ship (VOS) Program is coordinated by the UNESCO International Ocean Carbon Coordination Project (IOCCP). International groups from 14 countries have been outfitting research ships and commercial vessels with automated CO2 sampling equipment to analyze the carbon exchange between the ocean and atmosphere.

NODC编号0081046的数据集包含1989年11月17日至2011年3月14日期间，在俾斯麦海、东海（Tung Hai）、北太平洋、菲律宾海、日本海及南太平洋的Ryofu Maru II号采集的化学、气象、物理及走航表层数据，该数据由航次49RY19891117获取。此类数据涵盖气压（BAROMETRIC PRESSURE）、大气二氧化碳（CARBON DIOXIDE - AIR）、二氧化碳分压（或逸度）（Partial pressure (or fugacity) of carbon dioxide）、盐度（SALINITY）及海表温度（SEA SURFACE TEMPERATURE）。采集此类数据所用的仪器包括二氧化碳（CO₂）气体分析仪及用于自主二氧化碳（CO₂）测量的淋浴头式舱室平衡器（Shower head chamber equilibrator）。该数据集由日本气象厅的Akira Nakadate、Shu Saito，以及污染物化学分析中心、海洋部、全球环境与海洋司作为志愿观测船（Volunteer Observing Ship，简称VOS）Ryofu Maru航线数据集的一部分完成采集。

全球志愿观测船（VOS）计划由联合国教科文组织国际海洋碳协调项目（International Ocean Carbon Coordination Project，简称IOCCP）统筹协调。来自14个国家的国际团队已为科研船舶及商业船舶配备自动化二氧化碳（CO₂）采样设备，用于分析海洋与大气间的碳交换过程。