A Non-Fickian Mixing Model for Stratified Turbulent Flows
Abstract
The long term goal of this project is to develop a better understanding of oceanic processes in the range of 100 m to 10 km, in the so-called submesoscale range. In particular, it is important to explore and find out whether and what type of submesoscale instabilities exist, how they are connected to both larger scale and smaller scale motions, and to what extent they influence transport processes in the ocean. Another important objective of this project is to test how well subgrid-scale (SGS) models for large eddy simulations (LES) work in the presence of backward energy cascade that may be characteristic in submesoscale motions. A long term objective of this effort would be to improve the predictive skill of the Navy numerical models for submesoscale transport in the ocean. My main objective has been to model upper ocean mixed layer instabilities, investigate their behavior and try to develop sampling strategies using synthetic drifters and tracers prior to the first LatMix cruises. In addition, modeling help with data analysis is planned. The work is based on LES using the non-hydrostatic spectral element model Nek5000 as well as field data. Also, software has been developed in order to automatically download and make available MODIS raw SST data over the selected region in the first LatMix cruise.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2012
- Accession Number
- ADA590696
Entities
People
- Tamay M. Özgökmen
Organizations
- Rosenstiel School of Marine, Atmospheric, and Earth Science