@wavygk@mastodon.nz
@wavygk@mastodon.nz avatar

wavygk

@wavygk@mastodon.nz

Living in Te Whanganui-a-Tara. An oceanographer w Co-appointment at the Uni of Auckland and NIWA. #Ocean mixing especially beneath Antarctic ice and in fast tidal flows. #Science advocacy with NZ Assoc Scientists. The rest of the time is #guitars #ArtSci #swimming and #ebikes. Thoughts my own. #oceanography #Antarctica #Turbulence #oceans #climate #TransMultiCrossDisciplinary

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iangriffin, to random
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Here’s the team in the banquet hall 2/n

image/png

wavygk,
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@iangriffin - great session thanks - it was amazing to see it all together! It blows my mind that the funding stopped. Why would you can something that was designed to inspire kids?

wavygk, to random
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in other news... the present austerity is hitting NZ environmental science positions... it takes a decade or more to reinstate lost research areas - sometimes never.

https://www.rnz.co.nz/news/political/513799/niwa-proposes-to-cut-up-to-90-jobs-union

wavygk, to climate
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Scientists supporting our youth as they seek a better future.

Friday April 5 will see what organisers intend to the be largest School Strike For Climate since 2019.

https://scientists.org.nz/news/13338462

wavygk, to random
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We don’t have cats anymore but am visiting the folks and they have Georgie so I can participate in - deaf as a post and loved to bits (main conversation round here is if it is cool enough at night to warrant warming the heat bag for Georgie to sleep on 🙄)

wavygk, to climate
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did a radio podcast thing for our voyage - it was a great conversation (Sharon Brettkelly was so on to it) but I rambled as usual - the team at Radio NZ crafted a great (and dare I say important) story. And our PhD student Liv just aced it with enthusiasm to counter my school principal vibe.

https://www.rnz.co.nz/programmes/the-detail/story/2018930763/the-sea-ice-factories-of-antarctica

Brendanjones, to climate
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Blimey, we just hit 21.2°C global average sea surface temperature. First time that's happened in recorded history.

wavygk,
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@AlexsandraSmart @Brendanjones @drclareharris

@AlexsandraSmart @Brendanjones @drclareharris
Yes its the biggest existential question for our civilization at the moment. Sea surface temperatures are easy for everyone to understand but the real story is Ocean Heat Content - the Joules of energy stored in the ocean. Typically the total over 700m or 2000m is what is tracked.

The figure is from => https://www.epa.gov/climate-indicators/climate-change-indicators-ocean-heat

wavygk,
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@AlexsandraSmart @Brendanjones @drclareharris

not sure if this is open access but this paper by Melissa Bowen and Phil Sutton shows the temperature with depth for some of NZ oceans.

They also look at the depth at which the surface data stops being representative of deeper temperatures. It varies with latitude and season but sort of 50-150 m - ish.

https://www.tandfonline.com/doi/full/10.1080/00288330.2018.1562945

wavygk, to random
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Almost home - Pilot being dropped off… I had to do this last year but the professionals make it look easy.

A yellow boat coming up alongside a large ship. The boat is yellow and black which contrasts with the grey green of the sea.

wavygk, to ocean
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We get into port tomorrow morning all going well. Last night the moon and cool breeze was just something else.

wavygk, to random
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Reasonably accurate representation… the close metal ship is in sharp focus and the world outside is ever so slightly blurry… just left the 60S

View out a porthole with waves - the occasional whitecap goes past

wavygk,
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@jaztrophysicist I missed it!

wavygk, to worldwithoutus
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Well it’s time to head north - and as we do it has decided to snow so our little icebreaker looks like (northern hemisphere) Christmas .. likely no more sea ice or bergs … we likely have some proper waves ahead for the 6 day transit… although there is a path through the waves

wavygk, to climate
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just did TV interview and got asked if the changes we are observing are "just due to climate change"...

wavygk, to aotearoa
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know any 18-24 yo in who would be keen on being on Youth Advisory Group for ?

https://careers.mfe.govt.nz/jobs/Flexible/MFE-1777832

wavygk, to random
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implausibly real... layer cake of cloud, Victoria Land mountains (some being 4 km high) and an ocean right at the point of forming... we slowly drifted up to it before starting a sampling line moving up the coast.

wavygk,
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@msquebanh thanks! it is so spectacular down here it’s a struggle to take bad photographs… my normal trips are to ice shelf camps where it’s absolutely flat and white or grey so this was magic - I say was as we are just getting underway north…

wavygk, to climate
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a few days back I was in my cabin on an icebreaker rambling over WhatsApp to a reporter and she made something coherent emerge.
here's something beyond the incomprehensibly beautiful scenes we've had the privilege to witness

https://www.stuff.co.nz/climate-change/350180428/voyage-solve-mystery-antarcticas-plummeting-sea-ice

wavygk, to random
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It’s been days since we’ve seen the sun and then this happened… the sun sank below the cloud bank and lit everything up… and kept going so it’s also the first sunset I’ve seen in 5 weeks. that’s the shadow of Coulman Island. All this is at around 72S in the Ross Sea. Oh and there were indifferent seals lounging on the sea ice right in front of us. Almost the entire team was out getting cold taking photos and then warming up on the bridge. Our planet is spectacular and precious.

wavygk, to random
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update... ship has wedged itself into pack ice in order to damp out waves as we prepare to ride out next storm. The angle of this one leaves us with nowhere to hide. The sky is so dark partly because there is open water a little distance away

wavygk, to worldwithoutus
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More from the research voyage: these puppies grew on our gear that had spent a year at 2km depth in the oceans - Anthoathecata (thecate hydroids) - I'm told. Dunno why people focus on aliens from other planets when these folks are pootling around in the depths This is them in water - image about 5 cm across.

wavygk, to random
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Voyage Update: We managed to sneak through a break in the storms to retrieve a sediment trap - a reasonably clever device that sits near the seafloor for a year and catches the tiny particles that rain down... here are it's buoys bobbing alongside the ship after returning from the 2km deep seafloor in a - such a relief to see these pop up (we sent them an acoustic signal to come to the surface). Now we head south fast for shelter.

some floats travel across the image from left to right. A pair of floats on the left are yellow and float nicely, the float on the right is orange and is getting pulled beneath the surface. The floats are about 10 m apart and tied together. The sea is calm. You can see little waves radiate out from the floats.

wavygk, to climate
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The sun finally came out... we are at 74S in about 600 m of water measuring the cold, salty oxygen-rich water draining north to replenish the global ocean. A process that seems to be changing.

wavygk, to climate
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so we got our awesome that could back - - it was a nervous juggle getting it to surface away from an advancing field of - all while we were stuck with weather - as it was after a 50 km journey it ended up just being 100 m the right side of a messy band of ice. It would have been quite the pain if it had come up in that chilly soup.

wavygk,
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@elaterite temperature, salinity, some biological parameters and a particle sizer so we can see layers of meltwater that has dust in it which will affect growth of new sea ice when autumn kicks in.

davidho, to random
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You’d be amazed at how much of our decision making on a recent 5-week research cruise in the Labrador Sea was made using windy.com.

wavygk,
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@davidho same same… we are presently tucked in the lee of Cape Colbeck in anticipation of bad weather - according to Windy.com

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