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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

RS-232 Sensor Integration Guide

Unlike analog auxiliary sensors, instruments that output serial RS-232 data are more challenging to integrate with Sea-Bird Scientific CTDs. Despite RS-232 being a standard communication protocol, most instruments have a unique data output format and command set. As...

Sea-Bird Scientific Photo Contest

From today until April 30th , submit your best photos and view entries to our 5 categories for a chance to win one of several prizes, including Sea-Bird Scientific swag and some grand prizes. Most Biofouled Sea-Bird Scientific instrument: biofouling sets in and–in...

Tech Tip: Cable Search

Consider this hypothetical situation: you find a loose cable with a 6-pin connector and a 4-pin connector - exactly what you need to connect an oxygen sensor to your CTD. However, just because the cable ends fit on the instrument connectors, you still don’t know if...