A figure of the northern part of the domain (Ganges-Brahmaputra-Meghna Delta):
The white contour is 10m. The labels are UHSLC tide gauge stations, I did harmonic analysis on some of them:
- Harmonic constants from 366-day intervals (link to researchgate.net)
- Seasonal variation of M2 (link to researchgate.net)
- quadratic bottom friction
- 8km grid spacing with a minimum depth of 5m (extracted from GEBCO 2020)
So far I tried to reproduce the results of the following paper, which uses a similar configuration as I, except for the (potentially important) difference that they have seemed to mask out the very northward end of the bay between Charchanga and Chittagong. This is not explicitly mentioned in their paper, I'm just guessing from their figures:
Sindhu, B., Unnikrishnan, A.S., 2013: Characteristics of tides in the Bay of Bengal.
Do you think that going from 2d to 3d could solve this?
Do you have literature suggestions for local effects of 3d vs 2d in very shallow regions, and the effects of tuning the bottom boundary layer (or whatever appropriate) that are particularly relevant to my case?
Thanks a lot for your help!