CTD SAM Data Files from R/V Roger Revelle KNOX22RR in the Patagonian Shelf (SW South Atlantic) from December 2008 (COPAS08 project)

<p>SAM data - CTD profile sampling files used to calibrate the various sensors<br />
<br />
'sam' files are sampling files used to calibrate the various sensors for the CTD profile data<br />
The files contain information from the moment each Niskin bottle was closed for each<br />
measured parameter (salinity, temperature, oxygen, etc), as well as the salinometry<br />
bottle data and the discrete Winkler oxygen titration data which have been pasted into<br />
each sam file.<br />
<br />
These data have been included in these files as it should allow the calibration coefficients<br />
to be recalculated if necessary but more importantly also provides an accountable record<br />
of how the data were calibrated. It is worth noting that the sam files are created for<br />
the purpose of deriving calibration coefficients from uncalibrated datafiles. Once the<br />
calibration is derived the sam files are not recreated. This means that the salinity and<br />
oxygen values found in the sam files are based on the manufacturers calibration only.</p>

SAM数据集——用于各类传感器校准的CTD剖面采样文件

"sam"格式文件为采样文件，用于CTD剖面数据配套的各类传感器校准。此类文件存储了各测量参数（盐度、温度、溶解氧等）对应的每只尼斯金采水器（Niskin bottle）关闭时刻的相关信息，同时还包含已粘贴至各sam文件内的盐度测定采水器数据，以及离散温克勒氧气滴定法测定数据。

将此类数据纳入文件，一方面可在必要时重新计算校准系数，更重要的是能够留存数据校准过程的可追溯记录。

需特别说明的是，sam文件的创建初衷是从未经校准的原始数据文件中推导校准系数，一旦校准系数推导完成，便不会重新生成sam文件。这意味着sam文件内的盐度与溶解氧数值仅基于厂商初始校准结果。