Interplay between wind-driven advection and mixing of salt and dissolved oxygen in a microtidal estuary

Most work on how estuarine dynamics impact dissolved oxygen (DO) distributions has focused on tides as the primary mixing mechanism, but in shallow estuaries with large fetch or small tides, wind can be the primary mixing agent and also drives advection. To investigate how these processes interact and affect DO distributions, an observational study was conducted in the shallow, micro-tidal Neuse Estuary (NRE). Salinity, DO, and velocity profiles were measured at multiple positions along and across the estuary over a 6-month period. A one-dimensional model (General Ocean Turbulence Model) provided additional insight into the response of salinity and DO to wind.  Salinity and oxygen conservation equation terms were calculated from observations and simulations to investigate the roles of advection and mixing under different conditions. Cross-estuary wind drove lateral circulations and tilted the isohalines, reducing stratification; lateral advection and enhanced vertical mixing reduced ver..., , , # Interplay between wind-driven advection and mixing of salt and dissolved oxygen in a microtidal estuary

## Description of the data and file structure

This study includes observation data and model simulations. The field data is included in 'Data0620.mat', 'Data0919.mat' and 'Six-month data.mat'. The descriptions of the dataset are included in 'Data0620 comments.xlsx', 'Data0919 comments.xlsx' and '6-month comments.xlsx'. The GOTM setting and initial conditions are included in 'model' folder. For initial conditions, you need to modify the 'sal', 'temp' input files. The first row in these two files is the date and number of values in this timestep. The first column is depth and the second column is salinity or temperature. For forces, you need to modify the 'pressure', 'wind' input files. The mcode files in 'Oxygen Budget' folder are used to calculate the oxygen budget using MATLAB. The 'AirSeaExchange.m' calculates the boundary flux at the surface and the 'ProductivityModel_idealiz...