[ecco-support] [EXTERNAL] Questions about ECCO2_cube92 data

[Dimitris Menemenlis]

Dear Mengdie, the drop in sea level probably means that Drake Passage transport has accelerated substantially during the last few years of the simulation.
My colleague Hong Zhang, cc-ed, has verified that this is indeed what happens in the cube92 simulation.
This drop is almost certainly caused because forcing changes from ERA-interim to JRA-55 in 2009.

What are you trying to study with the cube92 simulation?
How about using ECCO-v4r4: https://ecco-group.org/products-ECCO-V4r4.htm <https://ecco-group.org/products-ECCO-V4r4.htm>
or ECCO version5 Alpha: https://ecco.jpl.nasa.gov/drive/files/Version5/Alpha <https://ecco.jpl.nasa.gov/drive/files/Version5/Alpha>
instead?

Cheers, Dimitris


> On Jul 24, 2021, at 2:05 AM, Mengdie Xie <mengdie.xie at utas.edu.au> wrote:
> 
> Hello,
> 
> Sorry to bother you. I have a question about ECCO2_cube92 SSH(sea surface height) data.
> 
> The situation is that:
> I used ECCO2_cube92 SSH 3-day data over the period 1996.01-2016.12 to calculate the area average value of Antarctic(50°S-90°S). And I drew the time curve of SSH, as shown in the attachment. It shows a rapid decline in a short time.
> 
> I don't know why it drops so fast in such a short time, I'm not sure if it's reasonable. If it's unreasonable, there may be something wrong in my calculation. Could you please help me check whether the result is reasonable?
> 
> I would appreciate it very much if you could give me some information on this.
> 
> Best Regards,
> Mengdie 
> 
> 
> 
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