Aligned and Depth Binned profile data that are collecting profile data are described here. This data product is generated on-demand / on-the-fly and with several improvements over Aligned and Depth-Binned Profile Data (Legacy). 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.
Generally, the descending portion of the cast is then extracted (this will be user configuration in the future, as well a as cast detection, alignment, binning parameters). This data product is only used with aligned and depth binned data. To distinguish it from the Aligned and Depth-Binned Profile Data (Legacy) data product, these files are named without "-CORRECTED" added to the standard file-name. This data product includes data from connected sensors when applicable. If connected sensors have been included. this is denoted by having "-ALLCONNECTEDSENSORS" add to the standard file-name. This data product retrieves all aligned and depth binned casts within the search range and produces one output file with one or more casts within it. Each cast is prefaced by a header which contains additional information associated with the cast. An example of this header can be seen below. The columns of data are labelled with numbers counting from left to right. Each number is labelled with the type of data contained within it and the associated units. The columns of data are comma-delimited with one space on either side of the comma. This data product is very similar to Aligned and Depth-Binned Profile Data (Legacy), however, each cast and instrument in the search range is included in one file (up to file and memory size limits).