Project Goal
The goal of the Simple Ocean Data Assimilation (SODA) project is to reconstruct the historical physical (and eventually biogeochemical) history of the ocean back (eventually) to the beginning of the 20th century. As its name implies, SODA uses a simple architecture based on community standard codes with resolution chosen to match available data and the scales of motion that are resolvable. Agreement with direct measurements (to within estimates of the observational error) as well as unbiased statistics are expected. While SODA remains a university-based research project, we want to be helpful to users by providing a reliable, well-documented, source of seasonal-to-decadal scale ocean/sea ice reanalysis to complement the atmospheric reanalyses available elsewhere.
Our current focus is on examining the impact of improved forecast model physics. In particular we are exploring the impacts of improved (eddy-resolving) horizontal and vertical resolution, improved meteological forcing, and improved tidal mixing. To speed development of a global reanalysis that includes these improvements we've begun by focussing on a limited region. Our current version, SODA4, has 0.1x0.1x75L resolution and spans the 45-year period 1980-2024
 | Credit: Molly Carton 10/11/2020; James Carton 8/2/2025 |
We gratefully acknowledge financial support from the National Science Foundation.