Dataset: Seabird CTD data R/V Melosira

File name to link the metadata & profile data extracted from each cast's raw data (.CNV) file

Unique sample ID based on the gear type, date, and CTD cast within that date in the format CTD_MMDDYYYY_#. Example: The third cast of the day on October 7, 2015 would have the sampleID CTD_10072015_3.

Year cast was taken

Date the CTD cast was taken

Start time of cast, local time

Lake Champlain major basin: Main Lake, Malletts Bay, or Inland Sea

Lake Champlain region based on coordinates and/or field notes: North, Central, or South Main Lake; Inland Sea; Malletts Bay

Numeric description of major basin in Lake Champlain

Numeric description of minor basin (within major basin) in Lake Champlain

Latitude in decimal degrees (WGS84) for CTD cast; reported to 6 decimal places but may have been recorded to as few as 3 decimal places

Longitude in decimal degrees (WGS84) for CTD cast; reported to 6 decimal places but may have been recorded to as few as 3 decimal places

A value of 1 indicates missing coordinates which were estimated based on site descriptions from R/V Melosira ship logs.

Depth in meters from the water surface. Measurements taken at negative depths (above water surface) have been removed.

Conductivity measured in milliSiemens per centimeter

Rate CTD descended in water column

Time in seconds since start of CTD cast

Salinity

Recorded on SBE 43 Dissolved Oxygen Sensor

Water temperature in degrees Celsius

Measured with LI-193 Spherical Quantum Sensor

Sequential scan number recorded during each cast, as an index for when each row of data was collected. Only present for some years.

Measurements with data outside normal value ranges are flagged with 1.