RV CORYSTES 08/2002 High Resolution Conductivity-Temperature-Depth (CTD) Data

The data in this archive were collected from CEFAS (Or DFR) research cruises.
They broadly cover the European Shelf with some data from the Iberian Abyssal
Plain. Data were collected using the lowered CTD rosette system which is used
when the vessel is stationary. Usually bottles were fired at particular depths
and samples taken for calibration. In early years only a limited set of
parameters were collected. Notably Pressure (Depth), Temperature and
Conductivity (CTD). From Conductivity Salinity can be calculated using the
UNESCO 1978,1983 formulations . In subsequent years more sensors have been
added, notably fluorometers, Optical back scatter or transmissometers and
Light (PAR, photo synthetically available radiation). The exact configuration
varies between cruises and this is reflected in the data format of the output
files.

Data was collected from research vessels on station, a profile from the
surface to near the sea bed is undertaken. The down cast data should be a
clean profile. Water bottles for sample collection and calibration are fired
on the up cast.

本数据集之数据源自于CEFAS（或DFR）的科研远航活动。其内容广泛涵盖了欧洲大陆架，并包含部分伊比利亚海盆的数据。数据采集采用下放式CTD罗塞特系统，该系统适用于船舶静止时使用。通常在特定深度释放瓶体，以采集用于校准的样本。早期年份仅收集有限参数，特别是压力（深度）、温度和电导率（CTD）。通过电导率，可利用UNESCO 1978、1983年的公式计算出盐度。随后的年份，增加了更多传感器，包括荧光计、光学后向散射或透射计以及光照（叶绿素a荧光、光合有效辐射）。具体的配置因航次而异，并在输出文件的数据格式中得到体现。数据采集自固定站点的科研船只，进行从海面至近海底的剖面测量。下降时的数据应呈现为干净剖面，用于样本采集和校准的水瓶则在上升时释放。