Partial pressure (or fugacity) of carbon dioxide, water temperature, salinity and other variables collected from surface underway observations during the R/V Cape Hatteras cruises in the US South East Coastal Waters and North Atlantic Ocean from 2005-01-05 to 2006-05-27 (NCEI Accession 0051983)

This NCEI Accession includes surface underway, chemical, meteorological and physical data collected during the R/V Cape Hatteras cruises in the US South East Coastal Waters and North Atlantic Ocean from 2005-01-05 to 2006-05-27. These data include partial pressure (or fugacity) of carbon dioxide - water, sea surface salinity, sea surface water temperature and barometric pressure. 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 Wei-Jun Cai of University of Georgia; School of Marine Programs as part of the South Atlantic Bight (SAB) data set. The survey was carried out on six cruises: 5-16 January 2005, 19-30 March 2005, 27 July - 5 August 2005, 7-17 October 2005, 16-21 December 2005, and 17-27 May 2006. In all of the sampling cruises except for the one in December 2005, the research vessel transected the whole SAB from coastline to about 500 m water depth. The survey focused on 5 cross-shelf transects that are named E-, D-, C-, B-, and A-transects respectively from north to south (Figure 1). In December 2005 the ship still transected the whole SAB, but did not cover D- and B-transects and did not go beyond the 200 m isobath. Sea level pressure was recorded using an on board R.M. Young® barometric pressure sensor. Sea surface temperature (SST) and salinity were recorded continuously with an on-board SeaBird® flow through thermosalinography. Surface water and atmospheric xCO2 were also measured underway during all cruises.

本国家环境信息中心（National Centers for Environmental Information, NCEI）收录的数据集，涵盖2005年1月5日至2006年5月27日期间，R/V哈特拉斯角号（R/V Cape Hatteras）科考船于美国东南近海水域及北大西洋执行航次时采集的走航表层化学、气象与物理观测数据。本次数据集包含水体二氧化碳分压（或逸度）、海表盐度、海表水温及大气气压观测数据。采集上述数据所用仪器包括用于自主式二氧化碳测量的二氧化碳气体分析仪与淋浴头式平衡舱。本批数据由佐治亚大学海洋项目学院的蔡伟俊采集，作为南大西洋湾（South Atlantic Bight, SAB）数据集的组成部分。本次科考共执行6个航次，分别为2005年1月5日至16日、2005年3月19日至30日、2005年7月27日至8月5日、2005年10月7日至17日、2005年12月16日至21日，以及2006年5月17日至27日。除2005年12月航次外，其余所有采样航次中，科考船均沿航线横跨整个南大西洋湾，从近岸海域直至约500米水深区域。本次科考聚焦5条跨陆架断面，自北向南依次命名为E断面、D断面、C断面、B断面与A断面（图1）。2005年12月航次中，科考船仍横跨南大西洋湾，但未覆盖D断面与B断面，且作业水深未超过200米等深线。海平面气压通过船载R.M. Young®气压传感器进行记录。海表水温（SST）与盐度通过船载SeaBird®流动式温盐仪进行连续记录。所有航次期间均同步开展表层海水与大气中的二氧化碳摩尔分数（xCO₂）走航测量。