Drifting buoy/float data submission
BODC aims to ensure that all data incorporated into our database are adequately documented to allow long term viability and future access. Therefore, key data set information (metadata) are important for each data set we receive.
Our 'General guide to data submission' provides details of
- Data delivery mechanisms.
- Data file format and file naming.
- Parameter descriptions.
- General data set information (basic metadata)
- Where, when and how the data were collected.
- Who was responsible for data collection and how you refer to your data set.
- What has been done to the data.
- Watch points for other users (e.g. problems encountered and comments on data quality).
Information specific to drifting buoy/float data are described below. Metadata may be supplied in any standard document format (i.e. Microsoft Word or text), included in file headers or by providing a literature reference. Please do not be discouraged from sending us data even if some of the information is unavailable. We fully understand that there are many reasons why the standards specified may not be completely achieved.
Instructions for other data types are also available.
Ideally, all data from a buoy should be stored in a single file. A record should consist of date, time, position, position accuracy, observed parameters and any calculated values.
All relevant corrections and calibrations should be applied to the data. It should be checked for quality and pre-edited or flagged for erroneous values. Equations used to calculate values should also be provided.
Metadata specific to drifting buoy/float data
- Ship and cruise identifier.
- Project (if applicable).
- Country and organisation responsible for the station (i.e. buoy operator).
- Date/time of deployment.
- Position of deployment.
- Method of position fixing (i.e. DGPS or GPS).
- Buoy type and identifier(s).
- Drogue type.
- Date drogue was detached (if applicable).
- Instrument/sensor description. Include — reference number, manufacturer and model, resolution. Provide a literature reference, web site reference or briefly describe.
- Standard of calibration — method, quality, dates and calibration coefficients.
- Filtering, de-spiking or smoothing methods.
- Editing and quality control methods.
- Adjustments made due to variations in calibrations.
- Quality control report.