Add GEOMETRIC documentation to reference manual

The GEOMETRIC parameterisation has been added to the code in the main NEMO branch (#128, MR !202). This issue is to add the documentation (as provided by Julian Mak) to the reference manual

changed due date to March 12, 2023

added LDF OCE labels

assigned to @acoward

created branch 2-add-geometric-documentation-to-reference-manual to address this issue

mentioned in merge request !3 (merged)

mentioned in commit d4214bf4

closed with merge request !3 (merged)

marked this issue as related to nemo/nemo#128 (closed)

changed milestone to %2022 WP