Surface underway measurements of partial pressure of carbon dioxide (pCO2) in water and atmosphere, sea surface temperature, sea surface salinity and barometric pressure obtained during R/V Celtic Explorer research cruises in the North Atlantic Ocean from 2020-02-12 to 2020-07-09 (NCEI Accession 0224403)

This dataset includes surface underway, chemical, meteorological and physical data collected during R/V Celtic Explorer research cruises in the North Atlantic Ocean from 2020-02-12 to 2020-07-09. The measurements are done with a pCO2 instrument from General Oceanics (Miami/USA) and is described in detail in Pierrot et al. (2009). Surface water is pumped continuously from the intake to the equilibrator. The equilibrator contains a water spray head, and as the water flows through it the dissolved CO2 equilibrates with the headspace. The headspace is dried and xCO2 is determined and as the water flows through it the dissolved CO2 equilibrates with the headspace. The headspace is dried and xCO2 is determined by an infrared sensor. Calculations were performed following Pierrot (2009) and are described in detail in Steinhoff (2010).

本数据集涵盖2020年2月12日至2020年7月9日期间，“凯尔特探索者号”（R/V Celtic Explorer）研究船在北大西洋执行航次时采集的走航表层化学、气象与物理数据。本次测量采用美国迈阿密通用海洋科学公司（General Oceanics）生产的分压二氧化碳（pCO₂）分析仪完成，相关原理详见Pierrot等人（2009）的研究。表层海水经取水口持续泵送至水气平衡器（equilibrator），该平衡器内置喷水喷头；水流流经喷头时，溶解态二氧化碳与顶空气体达到平衡，顶空气体经干燥处理后通过红外传感器测定二氧化碳摩尔分数（xCO₂）。所有计算流程均遵循Pierrot（2009）提出的方法，详细说明可见Steinhoff（2010）的研究。