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SOIREE Summary of daily light levels, attenuation coefficients and critical depths
See SOIREE Preliminary Voyage Report
For more information refer to Gall et al (2001) "Phytoplankton processes (Part 2): Rates of primary production and factors controlling algal growth during the
Southern Ocean Iron RElease Experiment (SOIREE)".
BCO-DMO Processing Notes
Generated from original file Light_Summary.xls Tab: LightDataSummaryprovided on the
Deep-Sea Research II 48 (2001) accompanying CD-Rom
- parameter names modified to conform to BCO-DMO convention
- date reformatted to YYYYMMDD
- noontime lat/lon position inserted from ships track data to make these data mapable
None available yet
The Sea-Bird SBE 911 is a type of CTD instrument package. The SBE 911 includes the SBE 9 Underwater Unit and the SBE 11 Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). More information from Sea-Bird Electronics.
NIWA's Seabird 911plus CTD and related instrumentation
Photosynthetically Active Radiation (PAR) -400-700 nm.
Light Attenuation Estimates
Calculated from the beam attenuation relationship with CTDKo.
Defined as the 1% Light Level (Kirk, 1994).
Critical Light Depth
The critical light depth was calculated from the equations outlined in Nelson & Smith (1991)
latitude, negative denotes South
longitude, negative denotes West
Biological and Chemical Oceanography Data Management Office.
Funded by the U.S. National Science Foundation