MGL1704_Gradients2_Surface_O2Ar_NCP

Data were collected between May 28, 2017 and June 13, 2017 using an equilibrated inlet mass spectrometer (EIMS, Cassar et al., 2009) connected to the surface uncontaminated seawater supply of the Research Vessel <em>Marcus G. Langseth</em> on Cruise ID MGL1704. Data were collected near-continuously over the cruise track which departed and returned from Honolulu, HI and sampled waters of the North Pacific subtropical gyre and transition zone. The xls file ‘MGL1704_Gradients2_Surface_O2Ar_NCP.xls’ and companion ASCII text file ‘MGL1704_Gradients3_Surface_O2Ar_NCP.txt’ contain columns for UTC date/time (yyyy-mm-ddTHH:MM:ssZ), Latitude (decimal deg), Longitude (decimal deg), Surface Sea Temperature measured in the wetlab with a SeaBird Thermosalinograph (degrees C), Surface Salinity measured in the wetlab with a Seabird Thermosalinograph (no units), the Saturation of O₂ /Ar (O₂/Ar measured divided by O₂/Ar saturation, %), and the calculated net community production in surface seawater (mmol O₂ m-2 d-1). Missing data is indicated by an empty cell.本数据集采集于2017年5月28日至2017年6月13日，采用平衡式进气质谱仪（equilibrated inlet mass spectrometer，EIMS，Cassar等，2009），连接至“马库斯·G·兰格斯号”（Marcus G. Langseth）研究船的表层未受污染海水供应系统，该航次编号为MGL1704。数据沿整个航次航线近乎连续采集，该航次从美国夏威夷州檀香山起航并返回，采样区域涵盖北太平洋副热带环流区及其过渡带海域。XLS格式文件"MGL1704_Gradients2_Surface_O2Ar_NCP.xls"及其配套ASCII文本文件"MGL1704_Gradients3_Surface_O2Ar_NCP.txt"包含以下数据列：UTC日期/时间（格式为yyyy-mm-ddTHH:MM:ssZ）、纬度（十进制度）、经度（十进制度）、实验室现场测量的表层海水温度（采用SeaBird温盐计，单位：摄氏度）、实验室现场测量的表层海水盐度（采用SeaBird温盐计，无计量单位）、O₂/Ar饱和度（实测O₂/Ar与饱和O₂/Ar的比值，以百分比计），以及表层海水净群落生产力计算值（单位：mmol O₂ m⁻² d⁻¹）。缺失数据以空白单元格标注。