ESD_DS_DataDict_2017_CNMI_ADCP

Unique identifier for each Diel Suite deployed

Defined as the Ship ICES code + departure date formatted as YYYYMMDD

More descriptive name of cruise/mission and is usually in the format [MissionID]-[REGIONDesignation]-[IslandCode if only one visited]

A single designation that applies to all the rounds associated with a given mission/cruise

An identifier for the ecological site at the island or atoll (LOCATION) associated with the diel survey. Combines a 3-letter island code (derived from LOCATIONCODE) with a 2-4 digit site number.

A 3-dimensional identifier for the fixed location (LATITUDE and LONGITUDE) and depth where the subsurface temperature logger (STR) was deployed at the island or atoll (LOCATION). Includes "OCC" prefix, a 3-letter location code (derived from LOCATION), and a 3-digit site number. A newly deployed instrument is assigned to a pre-existing OCC_SITEID if its coordinates are within a 100-m diameter and its depth is within a 3-m depth cylinder of a pre-existing OCC_SITEID, otherwise, the instrument is assigned a new OCC_SITEID.

The name of the region where the diel survey was conducted in the Pacific Islands region: American Samoa, Pacific Remote Island Areas, Mariana Archipelago, main Hawaiian Islands, Northwestern Hawaiian Islands.

Code for the region surveyed in the Pacific Islands region: American Samoa (SAMOA), Pacific Remote Island Areas (PRIA), Mariana Archipelago (MARIAN), main Hawaiian Islands (MHI), Northwestern Hawaiian Islands (NWHI).

Name of island or atoll where the sample was collected in the Pacific Islands region (REGION).

3-Letter unique code for LOCATION.

Latitude in decimal degrees, WGS84, for the given Site

Longitude in decimal degrees, WGS84, for the given Site

OCC Survey depth (m) from dive computer at diel suite deployment

Year of the mission

UTC date and time of pressure measured from the ADCP, collected every 2 minutes.

Sample interval for CTD data.

Measured pressure value in decibars, measured from an ADCP co-located at the SiteID with a CTD that collected only temperature and conductivity (a non-standard CTD for most diel surveys). ADCP pressure is substituted for pressure measured from the CTD in the carbonate chemistry calculations for diel surveys conducted in 2016 in the PRIA.

Measured temperature value in degrees Celsius.

Calculated salinity value in Practical Salinity Units (PSU) .

Calculated sigma-t density value, the density of seawater at atmospheric pressure minus 1000 kilograms/cubic meter. NULL if pressure is NULL.

Sample interval for ADCP data.

Height bin above the ADCP. Each height bin is represented as the upper limit of the bin height above the sensor on the seafloor (for example, a 1.4 m bin represents current data collected between 0.4 m and 1.4 m above the ADCP). ADCP data include a blanking region, or a small distance in front of the transducer in which measurements cannot be made, of 0.2-0.4 m, and typically grouped into 1-m height bins, though smaller bin sizes (0.25 m or 0.5 m) are used for shallower deployments (2016).

Current direction, measured in degrees (0-360). Data are trimmed to a maximum height bin for each time interval using pressure data to remove above-water signal. As a result, NULL values may exist for larger height bins above the surface of the water due to waves and tides.

Current magnitude (speed), measured in meters per second. Calculated as the square root of the sum of the squared u and v velocities. Data are trimmed to a maximum height bin for each time interval using pressure data to remove above-water signal. As a result, NULL values may exist for larger height bins above the surface of the water due to waves and tides.