Journal

Final words from Chief Scientist, cruise leader Bill Williams

A big thanks to all the science team, and the Captain and crew of the CCGS Louis S. St-Laurent. This has been a very successful 15th expedition and in very good company. Over the last month, we have covered the Beaufort GyreA spiral oceanic surface current driven by the wind. with our grid of oceanographic stations, completing a huge amount of work with two ice stations, the three BGOS moorings recovered and redeployed, 69 XCTD casts, 59 CTDA research tool that is submerged in the water to measure conductivity (salinity), temperature, and depth./Rosette casts, and 48 bongo net tows. In collecting water for geochemical analysis from the Niskin bottles on the Rosette, the day and night watches have filled over 10,000 sample bottles, most of which have been analyzed on board our team of analysts.

The ice conditions this year have been unusual, though with the loss of ice in the Arctic, unusual ice conditions in the Beaufort GyreA spiral oceanic surface current driven by the wind. region are becoming expected. This year there was very little ice left by September and we needed to steam far north of our regular grid of stations to find ice that was suitable for buoy deployments. Once we returned to the open water in the ‘south’, we were able to travel faster, with no ice, but had constant concern over the potential for ocean swell to rock the ship and stop sampling. In the end we have been lucky, with only the last day of sampling where we needed to try to continue with CTDA research tool that is submerged in the water to measure conductivity (salinity), temperature, and depth./Rosette casts during a storm with 30kt winds and 3m seas.

It is now time to take the suggestion from the westerly winds and head east back to Kugluktuk, and fly home.

Thanks again to all, until next year.

Bill Williams.

Bill Williams
Bill Williams with his final cruise words.
2017 expedition cruise track and completed stations
2017 expedition cruise track and completed stations.
JOIS 2017 participants
JOIS 2017 CCGS Louis S. St-Laurent participants.
David Jones and Andrey Proshutinsky
Dispatchers from left to right: David Jones and Andrey Proshutinsky.
CCGS Sir Wilfrid Laurier
The CCGS Sir Wilfrid Laurier in the Beaufort Sea.
Boom removal
Wilfred Parsons helps the Science crew remove the bow boom for ice thickness measurements.
High angle ops
Wilfred Parsons does some vertical work helping the Science crew remove the bow boom for ice thickness measurements.
The CTD rosette crew
The CTD Rosette Crew poses in front of the CTD rosette sampler.

Details
Author
Dave Jones
Date
Location
Kugluktuk
Expedition
CO2 and pH Studies of the Arctic Ocean
Weather Summary
Sunny, swells
Temperature
2˚ C
Wind Speed
15 knot winds from the west

View Comments

Comments

Wed, 10/04/2017 - 12:15

Makenna Vukasin

overall what was the most challenging part of this years expedition? and what was the most exciting part?

Sat, 10/07/2017 - 18:41

Dave Jones

Most challenging part for the crew was getting the last mooring redeployed and doing the last few CTD rosette casts. The waves were BIG. Personally the biggest challenge was not eating too many of the unbelievable chocolate chip cookies!!dj

From: PolarTREC
To:
Sent: 10/4/2017 12:15 PM
Subject: Re: Makenna Vukasin commented on 2 October 2017 Time to go Home eh