Dr Femke de Jong 🌊

Physical Oceanographer at the Netherlands Institute for Sea Research (NIOZ). I am a human as well as a scientist. Views my own. @[email protected]

[Dr Femke de Jong 🌊 @fmkdejong]

@LeonSimons8 It has been investigated and proven wrong

[Dr Femke de Jong 🌊 @fmkdejong]

@LeonSimons8 https://t.co/72ehZJXbJI

[Dr Femke de Jong 🌊 @fmkdejong]

@DominikFahrner Congrats on the new position 🎉

[Dr Femke de Jong 🌊 @fmkdejong]

Now at https://t.co/8bcCljxG5F. Will probably take a while to get up to steam

[Dr Femke de Jong 🌊 @fmkdejong]

Mostly stopped posting here, but still looking for a good alternative. Mastodon isn’t quite it. If anyone has an invite code to the blue place I’d like to give it a try. DM me

[Dr Femke de Jong 🌊 @fmkdejong]

That was fast! Many thanks 😁

[David Ho @_david_ho_]

Deliberate tracer release experiments (TREs) are needed for MRV of ocean CO₂ removal (CDR). We need to develop the expertise.

If you are a Ph.D. student or recent Ph.D. and interested in joining a cruise to the Labrador Sea in Nov/Dec 2023 to assist with a TRE, please email me.

[Dr Femke de Jong 🌊 @fmkdejong]

@oceanografer Great story. Thanks for sharing

[Dr Femke de Jong 🌊 @fmkdejong]

@np_holliday Congratulations 🎉

[EPOC project @EpocProject]

@Ollie__Tooth @David_Smeed @RAPID_AMOC @Foukalpoint @ShaneKahn @MsadekRym @JonIRobson @BenMoat1 @mpc_ocean @SabOceano @CristinaArumi97 Where does that leave us? (2)
- #GulfStream transport is large, and contributes to gyres and overturning.
- #AMOC is smaller, but dominates heat transport.

Review from Jackson et al. (2022) on AMOC since 1980 https://t.co/qr1soWZSZz

[EPOC project @EpocProject]

@Ollie__Tooth @David_Smeed @RAPID_AMOC @Foukalpoint @ShaneKahn @MsadekRym @JonIRobson @BenMoat1 Where does that leave us? (1)
- #GulfStream spans Florida to Boston.
- #AMOC spans South Africa to Arctic.

Southern AMOC review (no Gulf Stream needed) from Chidichimo et al. (2023) https://t.co/EUbYhNuqrj
@mpc_ocean

[EPOC project @EpocProject]

@Ollie__Tooth @David_Smeed @RAPID_AMOC @Foukalpoint Major difference #2: Heat transport
At 26°N, the #gyre moves little heat. ~0.2 PW (0.2 x 10^15 watts).
The #AMOC transports almost all the heat (1.2 PW), even though it only claims a fraction of the #GulfStream.
Johns et al. 2011 (https://t.co/UrLqoWiojc)

[EPOC project @EpocProject]

@Ollie__Tooth @David_Smeed @RAPID_AMOC @Foukalpoint What about the #AMOC?

No simple theory explains its existence! In fact doesn’t *need* to exist at all (cf. the Pacific, or an AMOC ‘shut down’ state).
And we can’t write down an equation that describes the flow.

Talley et al 2010 (https://t.co/WcdqGkSIRg)

[EPOC project @EpocProject]

@Ollie__Tooth @David_Smeed @RAPID_AMOC @Foukalpoint Major difference #1: #GulfStream v #AMOC

The gyres are nicely described by theory. We can write an equation for them.
As long as the wind blows and the earth rotates, a gyre will exist. A #GulfStream is essentially unavoidable.

Image from Stommel 1948 (https://t.co/RQnbE8W4w5)

[EPOC project @EpocProject]

@Ollie__Tooth @David_Smeed @RAPID_AMOC @Foukalpoint Where is the #GulfStream in all this?

It’s part of both the horizontal and vertical circulations!
It contains the western boundary current of the gyre and the northward limb of the #AMOC in the northern subtropics.

Image from IPCC FAQ 9.3 https://t.co/UqHTHzHlr5

[EPOC project @EpocProject]

@Ollie__Tooth @David_Smeed @RAPID_AMOC The overturning goes up and down.

It’s a vertical circulation (seen in the yz-plane), and described in a integrative sense (across x-dir) where the net effect is to ‘tip’ the waters over (= overturning).

Only found in the Atlantic. (Ok, the A in #AMOC gives it away.)

[EPOC project @EpocProject]

In the Atlantic Ocean, there are two main large-scale circulations: the gyres and the overturning.

#Gyres go round-and-round.

They are a ‘horizontal’ circulation (xy-plane) and are found in multiple oceans.

[EPOC project @EpocProject]

What’s the difference between the #GulfStream and the #AMOC?

Isn’t it just ‘you say potato, I say potahto’?

A 🧵

Image from NASA 2009 (https://t.co/SR25T4MSVq)

[Han Dolman @han_dolman]

‘Era of global boiling has arrived,’ says UN chief as July set to be hottest month on record https://t.co/l5IWmXYlzC

[Laura Bergshoef @Science_Lau]

Vandaag voorin de krant:Volgens Deense onderzoekers komt de machtige oceaanstroming in de Noord-Atlantische Oceaan, die het klimaat over een groot deel van de wereld regelt, mogelijk al binnen enkele decennia abrupt tot stilstand. @NIOZnieuws @fmkdejong https://t.co/H72kdmF2XK