[ecco-support] ECCOv4r4 Arctic Cap to WGS-84 geocentric coordinate system conversion

[Joe Gradone]

Hi Ashfaq,

If you’re using Python, you can use rioxarray to change the CRS like so:

ds = ds.rio.write_crs('WGS84', inplace=True)

This dataset then plays nicely with geopandas too, I’ve clipped to shapefiles from here like:

ds = ds.rio.clip(atl.geometry.values, atl.crs)

where atl is an Atlantic basin shapefile.

Hope this helps.


Joe Gradone
PhD Candidate in Oceanography
Center for Ocean Observing Leadership
Department of Marine and Coastal Sciences
Rutgers University
Mobile: (908) 566-5355
www.joegradone.com<http://www.joegradone.com/>


From: ecco-support <ecco-support-bounces at mit.edu> on behalf of Ahmed, Ashfaq <ashfaq_ahmed at brown.edu>
Date: Thursday, June 27, 2024 at 9:31 AM
To: ecco-support at mit.edu <ecco-support at mit.edu>
Subject: [ecco-support] ECCOv4r4 Arctic Cap to WGS-84 geocentric coordinate system conversion
Good morning team,

I am a PhD student at Brown University, and I study the dynamics of the near-surface circulation in the Arctic Ocean. As part of one of the projects, I am trying to make an intercomparison between the ECCO sea ice products (e.g., sea ice velocity, thickness, drift speed, curl, angle) with other reanalysis products (e.g., NSIDC, OSI-SAF).

To make this comparison, I need to convert the Arctic cap into a WGS-84 geocentric coordinate system. Because the coordinate reference system (CRS) for the rest of the products is WGS-84, and I want the ECCO to be the same for a perfect comparison.

I did not find any document that might allow me to make this conversion. Could you kindly help me with this? I would really appreciate any feedback from you!

[Many thank to Brown University for sponsoring our 50th Anniversary celebration]
Thanks,
Ashfaq Ahmed (he/his)
Doctoral Student,
Center for Fluids and Thermal Science<https://engineering.brown.edu/people/graduate-students/phd-students/phd-students-fluids-and-thermal-sciences>
School of Engineering, Brown University
Lab website: wilhelmuslab.me<http://wilhelmuslab.me/>
Email: ashfaq_ahmed at brown.edu<mailto:ramisa_fariha at brown.edu>
Profile Links -
LinkedIn<https://www.linkedin.com/in/ashfaqahmed40/> | Website<https://ashfaqnihalbuet.wixsite.com/website> | Google Scholar<https://scholar.google.com/citations?user=iiSUYgsAAAAJ&hl=en&authuser=1> | ResearchGate<https://www.researchgate.net/profile/Ashfaq-Ahmed-15>
Providence, Rhode Island, USA

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