RV CIROLANA 01/1996 Low 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.

本档案中的数据源自于 CEFAS（或 DFR）科研考察航行。这些数据广泛覆盖了欧洲大陆架，并包含伊比利亚海盆的一些数据。数据采集采用了降下的CTD罗盘系统，该系统适用于船舶停泊时使用。通常在特定深度释放瓶具进行采样，并收集用于校准的样本。在早期年份，仅采集了有限的参数，其中包括压力（深度）、温度和电导率（CTD）。通过电导率，可利用联合国教科文组织1978年和1983年的公式计算出盐度。在随后的年份中，增加了更多的传感器，特别是荧光计、光学后向散射或透射计以及光（如光合有效辐射）。具体的配置在不同航次之间有所差异，这也在输出文件的格式中得到了体现。在考察站点的科研船舶上采集数据时，进行的从海面至近海底的剖面调查应得到一个干净的数据剖面。用于采样和校准的水瓶在上升过程中被释放。