Steric sea level variations over 2004-2010 as a function of region and depth: Inference on the mass component variability in the North Atlantic Ocean

摘要: [1] We investigate the regional-ocean depth layer (down to 2000 m) contributions global mean steric sea level from January 2004 March 2010, using Argo-based ocean temperature and salinity data SCRIPPS Oceanographic Institution database. We find that Indian warming is almost compensated by Atlantic cooling, so total increases only slightly over considered period (0.35 ± 0.30 mm/yr). Salinity variations also contribute, at lower rate, observed compensation. Meanwhile, Pacific 0.25 In North region, mass component (estimated difference between satellite altimetry-based minus same area) negatively correlated 2004–2010 with component. During period, variability seems mostly driven Oscillation (NAO). This unlike during previous years (1997 2004), a which we observe significant correlation El Nino-Southern (ENSO), positive corresponding ENSO cold phases (La Nina).