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Data Exercises

Q&A: Unusual Test Bath Data – a Cautionary Tale

Q&A: Unusual Test Bath Data – a Cautionary Tale

September 2019 Newsletter These data show a small but rather catastrophic deployment error. Shown above, pH and dissolved oxygen data before the highlighted area did not match bottle samples or nearby validation sensors, but data after the highlighted area accurately...

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Q&A: High Residuals in pH Data

Q&A: High Residuals in pH Data

March 2019 Newsletter The data shown above come from a SeapHOx V2 (red) and Deep SeapHOx V2 (blue) deployed next to one another in a dynamic estuarine environment. Regular pH validation samples were collected throughout the time-series. According to the 0.05 pH...

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Q&A: What is Causing This “Feature” in pH?

Q&A: What is Causing This “Feature” in pH?

The data above originate from a SeaFET pH sensor connected to a flow-through system that should provide stable, consistent data. As you can see, the Internal pH value experiences a dramatic drop in pH and a subsequent increase in noise midway through data collection....

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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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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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Sponsoring the Next Generation of Ocean Scientists

Sea-Bird Scientific was proud to have exhibited at the Ocean Optics Conference in Quy Nhon, Binh Dinh, Vietnam, from October 2 - 7, this year. The next generation of ocean scientists will contribute to the preservation of our oceans, and ultimately our planet. That’s...

OCEANS 2022

Sea-Bird Scientific is excited to announce our exhibition at the OCEANS Conference in Virginia Beach, Virginia from October 17 - 20 this year. Don't forget to stop by and see us at booth #500. Want to reserve your spot? Register now here. From the organizers: "Global...

Ocean Optics 2022

Sea-Bird Scientific is excited to announce our exhibition at the Ocean Optics Conference in Quy Nhon, Binh Dinh, Vietnam, from October 2 - 7 this year.  Want to reserve your spot? Register now here. From the organizers: "Ocean Optics XXV will take place October 2–7,...

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