[ecco-support] [EXTERNAL] How to calculate Arctic Sea Ice Area in ECCOv4?

[Zhang, Hong (US 398K)]

> On Apr 2, 2025, at 2:03 PM, Ahmed, Ashfaq <ashfaq_ahmed at brown.edu> wrote:
> 
> Hi, ECCO team, 
> 
> I hope you guys are having a wonderful time.
> 
> I am writing this email to solve a problem that I am facing as I am trying to plot the Arctic sea ice area in km^2. We know that the area = sea ice conc. * grid size. However, the grid size in the Arctic cap is variable. 
> 
> Can anyone please tell me how can I calculate the Arctic tile's sea ice area, considering the grid variability in mind?

As in your email, 
actual sea-ice area (in terms of meter square)= sea ice conc. * cell_area
Where cell_area is from
        float rA(tile, j, i) ;
                rA:coordinate = "YC XC" ;
                rA:units = "m2" ;
                rA:long_name = "cell area" ;

Or you can read from model grid
RAC.meta + RAC.data

Hope it helps
Hong