Hossen, J., Cucurull, L., Le Hanaff, M., Trossman, D., Bayler, E.J., and Menemenlis, D. (2024)
Presented at:
Ocean Sciences Meeting 2024In preparation for developing a NOAA ocean observing system simulation experiment (OSSE) capability, we conducted several ocean observing system experiments (OSEs), which use available observations. We considered three different experiments: i) a free run, without assimilating any observations; ii) a control experiment, assimilating all the available observations (remote sensing and in-situ); and iii) a data-denial experiment, assimilating only satellite observations (no in-situ observations). The experiments are conducted using the ocean data assimilation system under development at the Joint Center for Satellite Data Assimilation (JCSDA) and the National Centers for Environmental Prediction (NCEP)/Environmental Modeling Center (EMC). The ocean model used for these OSEs is the Modular Ocean Model version 6 (MOM6), with a quarter degree horizontal resolution and 75 vertical levels. After these OSEs are run to evaluate the marine data assimilation system, OSSEs are run using simulated ocean observations extracted from a Nature Run based on a global, high resolution coupled model run at the Jet Propulsion Laboratory (JPL) as a first step towards calibrating NOAA's future ocean OSSE system, with a wide range of applications, such as observing system design and configuration, ocean processes, weather forecasts, etc.
