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Q&A: Two pH Sensors – what is causing this difference?

Q&A: Two pH Sensors – what is causing this difference?

January 2019 Newsletter The data shown above originate from two different pH sensors deployed in the same well-mixed test bath. Both sensors were cleaned, tested, and calibrated before deployment, and were given 24 hours to equilibrate before recording data. So why...

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Prototype pH Sensors: Eyes on an Experimental Kelp Farm

Prototype pH Sensors: Eyes on an Experimental Kelp Farm

December 2018 Newsletter Spanning January to July 2018, two alpha SeapHOx V2s (serial numbers 001 and 002) tracked changes in pH at an experimental kelp farm funded by the Paul Allen Foundation. The purpose of the experiment was twofold: field-test the upgraded...

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Basic Maintenance videos for the SeaFET V2

Basic Maintenance videos for the SeaFET V2

Upgrading to a SeaFET V2 from the original SeaFET is completely internal—aside from the most inaccessible hardware within the instrument, the V2 uses the same housing, sensors, and batteries as the V1. Therefore, the basic maintenance procedures for the V1 and V2 are...

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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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Featured Posts

Announcing the NEW SBS 83 In-Air Oxygen Sensor

We are so excited to announce the launch of our SBS 83 Optical Oxygen Sensor, which is set to become the standard for Navis floats as part of the GO-BGC program, which is meant to build a network of chemical and biological sensors to monitor global ocean health. This...

The Oceanography Society Early Career Awards Ceremony 2022

Watch the Awards Ceremony The Virtual Awards Ceremony took place on Thursday, October 27th.  _______________________________________________________________ We are excited to announce Sea-Bird Scientific is hosting a virtual Awards Ceremony in collaboration with one...

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