<p>I heard that some ocean oscillations act on a time scale of a millennium. Is this true, or at least argued by some oceanographers? If so, what are they and what causes them? If not, what are the largest time scale ocean oscillations</p>
<p>Edit: After some research, I believe I may be looking for &quot;Atlantic meridional overturning circulation&quot; (AMOC). However, I haven't been able to understand so far if it is a true oscillation with 1000 year period. Can anyone conform if this is so? Or is it rather that it has changed over this timescale but not necessarily following an oscillation pattern?</p>
<p>Thank you</p>

CC BY-SA 4.0
2023-02-26T06:59:25.463Z
what type of oscillations are you talking about,El Niño ?, amoc?.
trond hansen
CC BY-SA 4.0
2023-02-26T07:19:11.897Z
I have in mind any process that happens in the oceans on a cyclic basis where the cycle length is much longer than annual
Peter A
CC BY-SA 4.0
2023-02-26T14:39:38.897Z
Yes this is just the kind of thing I am looking for, but on much longer time scale. The specific quote I am trying to verify is there are some oscillations on the scale of 1000 years
Peter A
CC BY-SA 4.0
2023-02-26T14:53:51.990Z
I believe what I am looking for may be "Atlantic meridional overturning circulation". Will update the question
Peter A
<climate><oceanography><paleoclimatology><ocean-currents><ocean-models>
Ocean oscillations with long time periods
Peter A
# Ocean oscillations with long time periods

(Asked by: username_0 on 2023-02-25)

I heard that some ocean oscillations act on a time scale of a millennium. Is this true, or at least argued by some oceanographers? If so, what are they and what causes them? If not, what are the largest time scale ocean oscillations

Edit: After some research, I believe I may be looking for "Atlantic meridional overturning circulation" (AMOC). However, I haven't been able to understand so far if it is a true oscillation with 1000 year period. Can anyone conform if this is so? Or is it rather that it has changed over this timescale but not necessarily following an oscillation pattern?

Thank you

**Tags:** climate, oceanography, paleoclimatology, ocean-currents, ocean-models

> **Comments:**
> **username_1**: what type of oscillations are you talking about,El Niño ?, amoc?.  
> **username_0**: I have in mind any process that happens in the oceans on a cyclic basis where the cycle length is much longer than annual  
> **username_0**: Yes this is just the kind of thing I am looking for, but on much longer time scale. The specific quote I am trying to verify is there are some oscillations on the scale of 1000 years  
> **username_0**: I believe what I am looking for may be "Atlantic meridional overturning circulation". Will update the question  

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