Question on tides in ESPC-D-V02 results

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Nguyen Hoang Thao

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Sep 26, 2025, 12:27:05 PMSep 26
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Hello all, 

As far as I know, ESPC-D-V02 gives ssh (surf_el) result which is water surface elevation WITH tides while Sssh (steric_ssh) is WITHOUT tides.

How about other variables (s3z, t3z, u3z, v3z)? Do they include or not include the tides?

Thanks in advance!

Bests,
Thao.

Alan Wallcraft

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Sep 26, 2025, 1:08:39 PMSep 26
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All the other variables include the tides.  We provide daily means to filter out most of the tidal signal.

Alan.

Nguyen Hoang Thao

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Sep 28, 2025, 7:19:40 PMSep 28
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Hi Alan,

Thank you for your response.
For my project I need to know what are included and not included in the input data (which is HYCOm results),
so may I ask what tidal constituents were filtered out in ESPC-D-V02 and what were not?
Or does HYCOM provide that information somewhere in the website?

Thanks.

2025년 9월 27일 토요일 오전 2시 8분 39초 UTC+9에 Alan Wallcraft님이 작성:

Alan Wallcraft

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Sep 28, 2025, 10:02:39 PMSep 28
to HYCOM.org Forum, Nguyen Hoang Thao, Alan Wallcraft

HYCOM supports 8 tidal constituent, Q1K2P1N2O1K1S2M2, and they are all on here.  Surface atmospheric pressure forcing is also being applied.

Alan.
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