CTD data collected during the SAZ-SENSE voyage, January-February 2007

Metadata record for data from ASAC Project 2720See the link below for public details on this project.The overall objective is to characterise Southern Ocean marine ecosystems, their influence on carbon dioxide exchange with the atmosphere and the deep ocean, and their sensitivity to past and future global change including climate warming, ocean stratification, and ocean ... acidification from anthropogenic CO2 emissions. In particular we plan to take advantage of naturally-occurring, persistent, zonal variations in Southern Ocean primary production and biomass in the Australian Sector to investigate the effects of iron addition from natural sources, and CO2 addition from anthropogenic sources, on Southern Ocean plankton communities of differing initial structure and composition.These samples were collected on the SAZ-SENSE scientific voyage of the Australian Antarctic Program (Voyage 3 of the Aurora Australis, 2006-2007 season). SAZ-SENSE VOYAGE AU0703 CTD DATAOceanographic measurements were collected aboard Aurora Australis cruise au0703 (voyage 3 2006/2007, 17th January to 20th February 2007) as part of the "SAZ-SENSE" experiment south of Tasmania, between 43 degrees and 55 degrees south. A total of 109 CTD vertical profile stations were taken to various depths, focussing chiefly on the upper water column. Over 1300 Niskin bottle water samples were collected for the measurement of salinity, dissolved oxygen, nutrients (phosphate, nitrate+nitrite, silicate, ammonia and nitrite), dissolved inorganic carbon, alkalinity, particulate organic carbon/nitrogen/silicate, dissolved and particulate barium, thorium, dissolved organic carbon, ammonium, pigments, phytoplankton, bacteria, viruses, diatoms, amino acids, and other biological parameters (list incomplete), using a 24 bottle rosette sampler. Near surface current profile data were collected by a ship mounted ADCP. Data from the array of ship's underway sensors are included in the data set.This report describes the processing/calibration of the CTD and ADCP data, and details the data quality. An offset correction is derived for the underway sea surface temperature and salinity data, by comparison with near surface CTD data.

本元数据记录对应ASAC项目2720的数据集，有关该项目的公开详情，请参阅下方链接。
本项目的总体目标为表征南大洋（Southern Ocean）海洋生态系统的特征、其与大气及深海之间的二氧化碳交换过程，以及其对过往与未来全球变化的敏感性——包括气候变暖、海洋层结，以及由人为二氧化碳排放引发的海洋酸化。具体而言，本计划将依托南大洋澳大利亚海域扇区内天然存在且持续稳定的纬向初级生产力与生物量变异，探究天然来源铁输入与人为来源二氧化碳输入，对初始结构与组成各异的南大洋浮游生物群落所产生的影响。
本次采集的样本取自澳大利亚南极计划的SAZ-SENSE科学考察航次，即2006-2007航季的南极光号（Aurora Australis）第3航次。
SAZ-SENSE航次AU0703温盐深剖面仪（Conductivity, Temperature, Depth，简称CTD）数据
南极光号AU0703航次（2006/2007年度第3航次，2007年1月17日至2月20日）在塔斯马尼亚以南、南纬43°至55°海域开展的"SAZ-SENSE"实验中，采集了海洋学观测数据。本次航次共设置109个温盐深垂直剖面测站，测量覆盖不同水深，重点关注上层水柱。
研究团队采用24瓶式多联采水器，共采集超过1300个尼斯金采水器水样，用于测定盐度、溶解氧、营养盐（磷酸盐、硝酸盐+亚硝酸盐、硅酸盐、氨与亚硝酸盐）、溶解无机碳、碱度、颗粒态有机碳/氮/硅酸盐、溶解态与颗粒态钡、钍、溶解有机碳、铵离子、色素、浮游植物、细菌、病毒、硅藻、氨基酸及其他生物参数（列表未完全穷尽）。
船载声学多普勒流速剖面仪（Acoustic Doppler Current Profiler，简称ADCP）采集了近表层海流剖面数据。本数据集还纳入了船载走航传感器阵列采集的相关数据。
本元数据记录说明了温盐深剖面仪与声学多普勒流速剖面仪数据的处理与校准流程，并详述了数据质量情况。通过与近表层温盐深剖面仪数据进行比对，本研究为走航海表温度与盐度数据推导得到了偏移校正量。