Real-time Ocean Monitoring at the Joint Center for Satellite Data Assimilation: a Testbed for Ice/Ocean Data Assimilation Development and Evaluation.
The JCSDA real-time ocean monitoring system leverages ideas commonly used in the software development community such as automated unit testing, agile development, continuous deployment, and use of cloud computing. These practices allow for rapid deployment of new code to the baseline version, providing immediate turnaround of performance metrics and quickly exposing unforeseen issues with “operational” cycling. The system is based on the GFDL MOM6 ocean model currently at 1 degree resolution. Planned improvements will slowly increase the capabilities of the system, increasing resolution to ¼ degree and adding a 1/25th degree regional domain over the Gulf of Mexico. The flexibility provided by the JEDI system will allow for rapid transition to more sophisticated DA methods: 3DVAR is currently being used but the real-time ocean monitoring will expand to 3DVAR-FGAT, EnKF, hybrid-4DEnVAR, in the near future.