California Current Ecosystem LTER

CTD Downcast Data (P0904, Student Cruise)

Title
Conductivity Temperature Depth (CTD) sensor profile data binned by depth from stations within the CCE region from CCE LTER P0904 student cruise, April 2009.

Abstract
Data from deployed Seabird 911 CTD mounted on a 24-bottle rosette during P0904 student cruise in the CCE region. The CTD-rosette is lowered into the ocean (to depths up to 1000m) at selected hydrographic stations and multiple times across fronts, using the ship's conductive-wire winch. Data from many sensors are transmitted up the conductive wire and displayed real-time on a data aquistion computer. Discrete seawater samples are collected in 10L bottles at specific depths determined by the chlorophyll maximum and mixed layer depth. These samples are analyzed at sea and used to assess the CTD sensor data quality, plus measure additional properties. Processed CTD profile data are binned by depth and include: depth, temperature, salinity, density (sigma theta), oxygen, O2 saturation, PAR (radiation, surface radiation, and % irradiance), fluorescence, transmission, and nitrate. These data are then compared to the seawater sample data, and corrected if necessary.

Keywords
habitats, marine, measurements, radiation, temperature, nitrate

LTER Data System Record
http://dx.doi.org/10.6073/pasta/fae601f79f10ce0578f722f5f663a90a
Projects
California Current Ecosystem LTER

Creators
Stukel, Mike (mstukel@fsu.edu)

Contact
CCE LTER Information Manager (ccelter.im@gmail.com)

Data

table CTD Downcast Data
Conductivity Temperature Depth (CTD) sensor profile data
Rows: 11150
Columns: 26
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Protocols


CTD General Practices
http://www.calcofi.org/references/methods.html