Latest GIOMAS/PIOMAS volume data for Antarctica

[Lord M Vader]

From Wipneus page where data from GIOMAS and PIOMAS for Antarctica are available. I think it's time for a thread that looks at the volume data around Antarctica given the record low extent numbers there.

While the extent numbers currently are at a record low level I doubt that the minimum volume as well as the SIE minimum will be at record low level given that the modeled average sea ice thickness around Antarctica have had a positive upward trend wrt the ice thickness. What will determine the final outcome for this melting season is whether the sea ice in the Ross Sea will melt out or not.

The only thing I miss from Wipneus site is similar thickness maps like the one for the Arctic basin.

Courtesy: Wipneus/Arctische Penguin

[crandles]

no redirects in image name - ie posting here gets too many views and causes problems. But there does appear to be a giomas antarctic mean thickness graph at
https://sites.google.com/site/arctischepinguin/home/giomas

Thickness seems very close to record low so surely volume is record low for this time of year (were you referring to record low ever?).

Ahh, I was looking at graph of thicknesses since 2001. 1980 have lower volume anomaly but not at this time of year. 1981 at this time of year is slightly hard to judge on tale of the tape graph, but Antarctic volume is lowest or second lowest for this time of year.

[Wipneus]

GIOMAS data has been updated to 2018-12-31.

I have updated most of the graphs, let me know if there is one that I overlooked.

Even better is that daily data is now available. All the graphs are will have to be modified. It is a huge improvement but will take some time as the amount of data is causing performance problems.

The place for these graphs are (arctic and antarctic):
https://sites.google.com/site/arctischepinguin/home/giomas

A few global (NH+SH) are on the global sea ice page:
https://sites.google.com/site/arctischepinguin/home/global-sea-ice

Attached are Antarctic volume and volume-anomaly graphs

[Wipneus]

Animated GIOMAS Antarctic sea ice thickness, the first forty years...

[uniquorn]

 

[LeedsIso]

Hi,

I'm looking for Antarctic sea ice thickness and volume from PIOMAS - do you know where I can find the data?

Thanks,
Iso

[Wipneus]

Hi,

I'm looking for Antarctic sea ice thickness and volume from PIOMAS - do you know where I can find the data?

There is no Antartctic PIOMAS, P is Pan-Arctic. GIOMAS is the a (G=) Global model, restricting the data to the Southern Hemisphere gives you the Antarctic data. GIOMAS has a courser grid, be careful with comparing to PIOMAS.

See my GIOMAS page (link my second post above) for the sources of GIOMAS data, that is gridded thickness data. Calculated volume is at the bottom of my page, in spreadsheet form and a link to a text file.
 

[LeedsIso]

Got it - thank you!

[Blizzard92]

If anyone is still interested in this data, I've just started including a page of GIOMAS thickness/volume figures for the Southern Hemisphere (Antarctic) at https://zacklabe.com/antarctic-sea-ice-extentconcentration/. My graphics are updated monthly.

[gerontocrat]

If anyone is still interested in this data, I've just started including a page of GIOMAS thickness/volume figures for the Southern Hemisphere (Antarctic) at https://zacklabe.com/antarctic-sea-ice-extentconcentration/. My graphics are updated monthly.

Very impressive graphics.

I was asked some time ago to do a look at Antarctic Ice Sheet Mass change combined with Antarctic sea ice volume/mass, though how useful that would be I do not know.

Does the Polar Science Center publish the GIOMAS data in the same way as for PIOMAS, and have you any views on the data quality? (I remember Wipneus was not that interested in it).

[Blizzard92]

Thanks! The data is updated monthly at http://psc.apl.washington.edu/zhang/Global_seaice/data.html, but I think only in the gridded binary file format.

I decided to additionally create a graphic of total ice volume as calculated by GIOMAS (Arctic + Antarctic), which I will update monthly at https://zacklabe.com/global-sea-ice-extent-conc/.

GIOMAS was recently validated in a new study, which helps to provide much more understanding on how well it performs in the Antarctic (https://tc.copernicus.org/articles/16/1807/2022/). GIOMAS was also just used in a new paper on Earth's energy imbalance (https://essd.copernicus.org/articles/15/1675/2023/). So there is definitely some interest in the climate science community for its use, and I think it is just another piece of the puzzle for monitoring polar climate change.

[oren]

Thank you Zack.

[grixm]

If anyone is still interested in this data, I've just started including a page of GIOMAS thickness/volume figures for the Southern Hemisphere (Antarctic) at https://zacklabe.com/antarctic-sea-ice-extentconcentration/. My graphics are updated monthly.

When in the month is is typically updated? I.e when will the June numbers come in?

[Blizzard92]

It's usually around the 3rd week of the following month. I just updated June 2023's GIOMAS numbers a few days ago...

Global: https://zacklabe.com/global-sea-ice-extent-conc/
Antarctic: https://zacklabe.com/antarctic-sea-ice-extentconcentration/