Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during NOAA Ship Henry B. Bigelow cruises in the North Atlantic Ocean, U.S. East Coast in 2021 (NCEI Accession 0288836)

This data package contains data measured using an autonomous total alkalinity titrator on board the NOAA Ship Henry B. Bigelow cruises in 2021. Data were collected from the ship's underway seawater supply during the seven hydrographic surveys, from March 12 to November 3, 2021. Spatial data coverage extends from the Gulf of Maine to Cape Hatteras. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Optimizing Ocean Acidification Observations for Model Parameterization in the Coupled Slope Water". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

本数据包包含2021年搭载于美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）亨利·B·比奇洛号科考船航次中，使用自主式总碱度滴定仪测得的观测数据。数据采集自该船的走航海水采集系统，采集时段为2021年3月12日至11月3日期间开展的7次水文调查。本次数据集的空间覆盖范围从缅因湾延伸至哈特拉斯角。本研究工作隶属于NOAA海洋酸化项目（Ocean Acidification Program, OAP）的资助课题，课题名称为"耦合斜坡水区域模型参数化的海洋酸化观测优化"（Optimizing Ocean Acidification Observations for Model Parameterization in the Coupled Slope Water）。数据集除总碱度数据外，还包含配套的温度与盐度测量结果。本次航次获取的二氧化碳分压（pCO2）测量数据，可从NOAA大西洋海洋学与气象学实验室（Atlantic Oceanographic and Meteorological Laboratory, AOML）获取。