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Q&A: Sudden Increase in Salinity

Q&A: Sudden Increase in Salinity

November 2018 Newsletter The figure above originated from an SBE 37-SMP MicroCAT moored CTD deployed in shallow seawater. On day 38, the salinity data appears to jump from a near-zero value, steadily increasing until around day 43, where it stayed around 30psu. Nearby...

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Salinity Spikes: Sensor or Environment?

Salinity Spikes: Sensor or Environment?

These data show a subtle problem that is producing “fuzzy” salinity and oxygen data. While the overall shape of the profile appears reasonable, small spikes are present throughout the CTD cast. The black lines encompass a particularly strange spot where both salinity...

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Q&A: Profiling CTD Data Spikes

Q&A: Profiling CTD Data Spikes

October 2018 Newsletter The four figures above come from the same 9plus CTD profile. As you can see, massive spikes punctuate the data stream and wreak havoc on data quality. While post-processing can filter out some spikes, they can also affect the CTD’s in-situ...

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HyperNAV Hyperspectral Radiometer

HyperNAV Hyperspectral Radiometer

As remote sensing satellites orbit Earth, Sea-Bird Scientific and NASA are developing a tool to drift with ocean currents. The HyperNav, a combination of hyperspectral radiometers and a Navis profiling float, provides in-situ calibration and verification for ocean...

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FRM4SOC Project

FRM4SOC Project

Scientists from around the world donned white jumpsuits and entered an unusual room. Inside, all furniture and walls were painted black, and very particular lamps emitted light directly into a device harnessed to a dark table. This was Laboratory Comparison Exercise 2...

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Radiometer Calibration Transfer

Radiometer Calibration Transfer

Positive pressure and sticky mats shun light-scattering dust from a room in Philomath, Oregon—the site of a new brand new radiometer calibration facility. As Sea-Bird Scientific’s facility in Halifax, Nova Scotia (formerly Satlantic) shuttered its doors, radiometer...

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Featured Posts

Video: Simulating an Inductive Mooring

Conceptually, inductive moorings seem complex - communicating with 100 instruments through a single cable doesn’t exactly sound intuitive. But, in practice, the setup is surprisingly simple. Watch our latest video to see how easy it is to test and simulate an...

Moored CTD Troubleshooting Guide

Deploying a moored CTD can be a game of trust. Nobody wants to return to their long-estranged CTD to find poor data quality. Of course, nobody wants to visit the middle of the ocean everyday either. Fortunately, we’ve created a basic troubleshooting guide for moored...

5 Inductive Modem Configurations

A buoy, a jacketed wire rope, and some exposed metal. In its simplest form, that’s all you need to create an inductive modem (IM) mooring. The buoy supports the surface modem, power supply, and data logging/transmission. Some buoys may also contain weather sensors, or...