CROZEX, CROZet natural iron bloom and Export experiment. Multidisciplinary dataset from the Crozet Plateau in the Southern Indian Ocean/Southern Ocean.

The dataset contains physical, biogeochemical and biological data, including measurements of water temperature, salinity, fluorescence, dissolved gases and current velocities; plankton samples from nets and plankton recorders; water samples for analysis of nutrients, phytoplankton, radioactivity and biogeochemical parameters; benthic cores; meteorological time series (pressure, temperature, humidity, wind velocities); atmospheric samples and ocean-atmosphere fluxes; and results from incubation experiments. The data were collected north of the Crozet Plateau in the Southern Ocean/Southwest Indian Ocean on RRS Discovery cruises D285 (3rd November - 10th December 2004) and D286 (13th December 2004 - 21st January 2005). Much of the data collection focussed on a series of Major Stations (called M1 to M10), with measurements being collected at these stations every two or three days. Conductivity-temperature-depth (CTD) casts were undertaken at each station, providing both hydrographic data and water samples from a range of depths. Other work at each Major Station included zooplankton nets, Longhurst-Hardy Plankton Recorder (LHPR) tows, sediment coring and Argo float deployment. In between Major Stations some additional CTD casts were undertaken. The SeaSoar oceanographic undulator provided further hydrographic data, while hull-mounted acoustic Doppler current profilers (ADCPs) provided current velocity data across the survey area. In addition, continuous underway measurements of hydrographic and meteorological parameters and surface water samples were collected along the cruise track. Five moorings were deployed, one of which was recovered at the end of D286. The other four, including sediment traps, current profilers and CTDs were deployed for one year. CROZEX (CROZet circulation, iron fertilization and Export production experiment) is a complex, multidisciplinary project to examine, from surface to sediment, the structure, causes and consequences of a naturally occurring annual phytoplankton bloom that forms. This collaborative project involved researchers in Ireland and the UK, and was administered by the National Oceanography Centre (NOC), Southampton. Data are managed by the British Oceanographic Data Centre. Much of the CROZEX data processing is ongoing and a number of datasets have yet to be submitted to BODC. The data described here are those presently held by BODC, with the exception of the Argo floats (these data are not expected by BODC and should be accessible via the Argo website) and the four year-long mooring deployments (data from these will be submitted to BODC in the future).

该数据集囊括了物理、生物地球化学及生物数据，涵盖了水温、盐度、荧光、溶解气体及流速等测量值；浮游生物样品，包括网捕和浮游生物记录器采集的样品；用于分析营养素、浮游植物、放射性及生物地球化学参数的水样；底质柱状样品；气象时间序列数据（气压、温度、湿度、风速）；大气样品及海洋-大气通量；以及培养实验的结果。数据采集地点位于南大洋/西南印度洋的克罗泽台地北部，在RRS Discovery号考察船的D285（2004年11月3日至12月10日）和D286（2004年12月13日至2005年1月21日）航次中进行。数据收集主要集中在一系列主要站（编号为M1至M10），每两至三天在这些站点进行一次测量。在每个站点进行了电导率-温度-深度（CTD）测量，提供了水文数据以及不同深度的水样。在每个主要站点还进行了其他工作，包括浮游动物网、Longhurst-Hardy浮游生物记录器（LHPR）拖曳、沉积物钻取和Argo浮标部署。在主要站点之间，还进行了额外的CTD测量。SeaSoar海洋学振荡器提供了进一步的水文数据，而船体安装的声学多普勒流速剖面仪（ADCP）提供了调查区域的流速数据。此外，在航迹沿线收集了水文和气象参数的连续测量数据以及表层水样。部署了五套锚系，其中一套在D286航次结束时回收，其他四套，包括沉积物陷阱、流速剖面仪和CTD，部署了为期一年。CROZEX（克罗泽环流、铁施肥及出口生产实验）是一项复杂的多学科项目，旨在从表层至沉积物，研究自然形成的年度浮游植物 blooms的结构、成因及后果。该合作项目涉及爱尔兰和英国的研究人员，由南安普顿的国家海洋学中心（NOC）管理。数据由英国海洋数据中心（BODC）管理。大部分CROZEX数据处理工作仍在进行中，尚有多个数据集尚未提交至BODC。此处描述的数据为BODC目前持有的数据，除外Argo浮标（这些数据BODC预期不会获得，应可通过Argo网站获取）及为期四年的锚系部署（这些数据将在未来提交至BODC）。