Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current.

ABSTRACT: Ocean acidification is progressing rapidly in the California Current System (CCS), a region already susceptible to reduced aragonite saturation state due to seasonal coastal upwelling. Results from a high-resolution (~ 3 km), coupled physical-biogeochemical model highlight that the intensity, duration, and severity of undersaturation events exhibit high interannual variability along the central CCS shelfbreak. Variability in dissolved inorganic carbon (DIC) along the bottom of the 100-m isobath explains 70-90% of event severity variance over the range of latitudes where most severe conditions occur. An empirical orthogonal function (EOF) analysis further reveals that interannual event variability is explained by a combination coastal upwelling intensity and DIC content in upwelled source w

SUBMITTER: Cheresh J 

PROVIDER: S-EPMC10415283 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature