Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown GOMECC2021 cruise RB2103 (EXPOCODE 33RO20210913) in the Gulf of Mexico, North Atlantic Ocean from 2021-09-13 to 2021-10-21 (NCEI Accession 0288999)

This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown GOMECC2021 cruise RB2103 (EXPOCODE 33RO20210913) in the Gulf of Mexico, North Atlantic Ocean from 2021-09-13 to 2021-10-21. Data were collected from the ship's underway seawater supply during the GOMECC-4 cruise. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.本数据集包含2021年9月13日至10月21日，在北大西洋墨西哥湾海域，由美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）罗纳德·H·布朗号科考船执行GOMECC2021航次RB2103（EXPOCODE 33RO20210913）期间采集的表层海水走航观测数据，涵盖总碱度、水温、盐度及其他相关变量。该批数据采集自GOMECC-4航次期间科考船的走航海水供给系统。本工作属于NOAA海洋酸化项目（Ocean Acidification Program, OAP）资助课题的一部分，课题名称为“通过多协作模式拓展东海岸与墨西哥湾近岸碳酸盐测量工作”。数据集除总碱度外，还包含对应的温度与盐度测量结果。本航次获取的二氧化碳分压（pCO₂）测量数据可从NOAA大西洋海洋与气象实验室（Atlantic Oceanographic and Meteorological Laboratory, AOML）获取。