Data processing steps

General (samples) data processing

General data processing procedure for projects
General samples data processing procedure ©

Our general data processing procedure for discrete samples data is

1. Archive original data. When data are first received they go through our Accession procedure. The data are securely archived in their original form along with any associated documentation.

2. Quality control is carried out to ensure that data are correctly linked to the appropriate sampling event (e.g. CTD bottle, non-toxic sample, zooplankton net, optics rig deployment). This is done by investigation using log sheets, cruise reports and other data sets, going back to the scientists if the problem cannot be resolved.

3. Load data into the relevant data table in the NODB. Derived parameters easily calculated from other parameters (e.g. ratios between two concentrations) are not loaded. Equations are provided in accompanying documentation to allow users to calculate derived parameters themselves.

4. Documentation is written to accompany the data. This is based on text about the collection method supplied by the data originator. Any data processing steps and comments about data quality are included.

5. The data are audited by a different member of staff to check that no errors have been made.

6. Distribution and delivery. Data are distributed to project participants on request or via our web site.

Related BODC pages

Overview of data processing at BODC      Moored instrument processing
CTD data processing     BODC parameter codes
Underway data processing     Code and format definitions