For Modelers

OSNAP Model Truth Code (Python)

Abstract

As part of an international effort, the Overturning in the Subpolar North Atlantic Program (OSNAP), is an ocean observing system that continuously measures trans-basin velocity, temperature and salinity of the full water column in the subpolar North Atlantic since 2014. As there is a broad interest in the community to compare model simulations with observational estimates, we provide a simple Python code that computes the meridional overturning circulation (MOC) from a model dataset interpolated onto the OSNAP section. Please note that this code is the beta version. We appreciate any feedback that could be useful for later versions. In addition, there are ongoing efforts to make this code generalized for any model dataset in future versions.

Code

Download the code files here.

Reference

When publishing work using the code, please cite the following:

• Fortin, A.-S., Majumder, S., Li, F., & Fu, Y. (2022). OSNAP Model Truth Code [Data set]. Georgia Institute of Technology. https://doi.org/10.35090/GATECH/67081

Example

The figures below show GloSea5 model truth in density coordinates at the OSNAP West (left) and East (right) for each month of the year 1993 (thin lines) and its mean (thick line).