Bio-Optical Measurements from RV Investigator Voyage IN2016_V01

2016 data from the Australian Marine National Facility RV Investigator voyage IN2016_V01 contains bio-optical measurements for particle and phytoplankton characterization. The dataset includes radiometry, spectral backscatter, attenuation, and absorption data collected using instruments like SeaBird CTD, Satlantic HyperOCR, WetLabs ac-9, and HobiLabs Hydroscat-6. It was processed and quality controlled by CSIRO.

Use Cases

• Analyze phytoplankton concentration using fluorescence measurements from the SeaBird CTD and Hydroscat-6.
• Model spectral light absorption and attenuation coefficients using the WetLabs ac-9 data at 9 wavelengths.
• Calculate water column optical properties from upwelling radiance (Lu) and downwelling irradiance (Ed) spectral data from the Satlantic HyperOCR.
• Characterize particle backscattering at six wavelengths (442, 488, 550, 589, 676, 850 nm) using Hydroscat-6 measurements.

Strengths

• Multi-instrument suite provides complementary measurements (CTD, radiometers, backscatter, absorption/attenuation).
• Data includes high-frequency sampling (CTD at 4 Hz, ac-9 at 2 Hz).
• Profiles extend to depths of 240 meters or near the seafloor.

Limitations

• Radiometric measurements were only taken during daylight hours.
• Specific row counts, column counts, and dataset size are unknown.
• Data availability was projected for late 2016, indicating potential staleness.

Provenance

Source

Australian Marine National Facility RV Investigator voyage IN2016_V01.

Collection Method

Instrument package lowered to depth at 20 m/minute; raw and calibrated data files created onboard.

Time Range

2016.

Freshness

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Geography

Australian marine regions covered by voyage IN2016_V01.