Sea-Bird Scientific has developed cosine collectors that are specifically designed to optimize performance in the intended media of operation (air or water). So in water irradiance sensors have cosine collectors that provide an excellent response in water but not in...
Sea-Bird Scientific multispectral 500 series radiometers measure light at each fixed wavelength with an interference filter/detector assembly. The analog output of each detector is amplified and digitized. The amplification stage and noise filtering is...
The acquisition of conductivity/salinity data alongside the SeaFETTM is recommended. The acquisition of temperature data is not necessary as the SeaFETTM performs temperature measurements. Typically, conductivity and temperature measurements are combined in...
The SUNA V2 determines nitrate concentrations from the shape of the UV absorption curve. The least squares curve fitting algorithm uses calibrated extinction coefficients for nitrate and bromide (strong absorbing species in salt water) to calculate the concentration...
Instrument specific calibrations are more accurate and correspond to the published accuracy specifications. The accuracy of the class based calibration is estimated to be 2.2 uM +/- 20%.
The SeaFETTM reports pH measurements on the total scale. Values of pH reported on the total scale represent the effective hydrogen ion concentration with contributions from both free hydrogen ions and those which have reacted with sulfate.
Derivation of Kd from a In what follows we have left off the dependence on wavelength. In addition we have left off effects due to inelastic scattering. Modeling Kd(z) requires the inclusion of the depth dependence of the shape of the radiance...
To first order, the vertical resolution is set by the vertical profiling speed. The profiling speed is user configurable (which can be changed during the deployment). At typical profiling speeds of 20 cm/sec, the Thetis Profiler provides the required 0.25 m vertical...
All data on-board the Thetis Profiler is time stamped using the on-board processor clock. This clock provides 10 ms resolution. The on-board clock is synced to the shore side host controller computer during each surface telemetry session, though the user can...
The numeric difference between psu and ppt is small; both indicate ocean salinity. Prior to 1978, oceanographers referred to the physical quantity ppt (kg salt per kg water in parts per thousand). In 1978, the Practical Salinity Scale (PSS-78) was adopted, which...
We were so grateful for another successful year at Ocean Business in Southampton, UK. This year, we sent a cross functional team consisting of sales, marketing, science, service, and more, to ensure that we had a large associate group on-hand that could answer a...
Sea-Bird Scientific will soon be part of Veralto! We’re excited to share some news – later this year, Sea-Bird Scientific will be part of a new public company – Veralto! As you may know, Sea-Bird Scientific has been part of Danaher as our parent company since 2008. In...
Technical Forum in Partnership with Scripps Sea-Bird Scientific is eternally grateful for having had the opportunity to present at a Technical Forum to the Scripps Institute of Oceanography community on April 6, 2023. In this session, our optical experts, Cris...