Aligned and Depth-Binned Profile Data (Legacy)
Legacy Aligned and Depth Binned profile data for sensors that are collecting profile data are described here. A profile is a series of measurements made throughout the water column grouped by each pass through the water, known as a 'cast', as opposed to continuous time series data. Profiles of the water column can be created by performing casts with instruments. Casts involve lowering an instrument down into the water and back up again while it is making measurements. Cast detection or delineation is performed automatically with manual oversight, contact us for further details. The measurements from the various sensors attached to and within the instrument are processed to filter, smooth, align, and average data into depth bins. Information about the data processing is included in the header of the data product. Specifically, the default processing steps are:
- The alignment of oxygen to account for instrument response lags. This is instrument dependent.
- Chlorophyll is filtered using a 25 median point filter.
- Temperature and conductivity data is smoothed using a 5 point running mean.
- Practical salinity, sound speed, and density are calculated using smoothed temperature, smoothed conductivity, and pressure.
- Data is averaged into 1 m bins centred at 1 m intervals. Data is only averaged into its corresponding bin if 70% of the data within the bounds of the bin has a QAQC flag of 1.
The descending portion of the cast is then extracted. This aligned and depth binned process is announced by having "-CORRECTED" appended to the start time in the file name. This data product consists of one file per cast per device. For example, if three devices perform two casts at the same time this will result in six separate files. These files have a header that defines what each column of data is representing. Each sample of data is preceded by a timestamp. The timestamp is followed by the first column of data. All other columns of data are comma-delimited as can be seen below. This data product is very similar to data product Aligned and Depth-Binned Profile Data (On-Demand), however, each cast and device is a separate file.
Please note that these files are generated beforehand offline and are available through Data Search for applicable instruments. Production of these files was superseded by Aligned and Depth-Binned Profile Data (On-Demand) and ceased when the newer was made available. Availability is therefore limited. Existing files are maintained for data reproducibility.
Please consult individual instruments' documentation for more information.
Oceans 2.0 API filter:
- 20150302: Initial Release
There is only one format for this data product which is a text file with a .cor extension. This type of file can be open in a wide variety of programs such as notepad, Wordpad, etc.
Oceans 2.0 API filter:
An example file is available to download here: RBRCONCERTO65681_20150223T164920.000Z-CORRECTED.cor