[ecco-support] Global integral of vertical momentum flux not zero?

[Wang, Ou (US 329B)]

Hello Fabien,

You haven’t missed anything in your calculation. The horizontal integral of area-weighted vertical velocity (WVELMASS) across a particular vertical level does not necessarily equal zero.

Best regards,
Ou Wang

From: ecco-support <ecco-support-bounces at mit.edu> on behalf of Fabien Roquet <fabien.roquet at gu.se>
Date: Monday, June 24, 2024 at 1:15 PM
To: ecco-support at mit.edu <ecco-support at mit.edu>
Subject: [EXTERNAL] [ecco-support] Global integral of vertical momentum flux not zero?
Hello ECCO team,
I have downloaded ECCO from PO.DAAC.
Using WVELMASS from ECCO_L4_OCEAN_3D_VOLUME_FLUX_LLC0090GRID_DAILY_V4R4, multiplying with rA and summing along i, j, and tiles, I find the horizontal integral of w is not zero. Am I missing something?
See picture for the vertical profile of w, which is of order several Sv.
Thanks for your help,
Fabien



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