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Hello ECCO team,</div>
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I have downloaded ECCO from PO.DAAC.</div>
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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?</div>
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See picture for the vertical profile of w, which is of order several Sv.</div>
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Thanks for your help,<br>
Fabien</div>
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