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Brief Description: Summary of daily light levels, attenuation coefficients and critical depths
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