[AOS20-P04] Global grid mapping of temperature and salinity based on Argo float data
Keywords:Argo, global ocean, gridded data
JAMSTEC produces quasi-real time gridded objective mappings of Argo, MOAA GPV for temperature and salinity fields, and MILA GPV for mixed layer depth every month or 10 days. Those data set are widely used not only to directly analyze the data set but also to validate the state estimate based on data assimilation. The data and its error from MOAA GPV are effectively informed to evaluate representation of temperature and salinity fields, which makes it possible to improve the data assimilation to be more elaborated for accurate analyses of changes in climate and ocean environment. While MILA GPV is produced with characteristics of Argo profiling float which has finer vertical resolution with horizontally homogeneous distribution. That enables us to capture detailed distribution of surface layer mixed layer depth, rapidly progressing physical and biogeochemical researches related to mixed layer variability.
In the future, the objective mapping will be more accurate and useful if the Core Argo array is sustained to obtain long-term statistical characteristics of the upper ocean temperature and salinity. Further, it is expected that improved mapping of physical and biogeochemical parameters will be developed when huge amount of measurement of temperature and salinity in deeper ocean than 2000 m and biogeochemical parameters, with the Deep and BGC Argo arrays.