Table 1.

Numerical simulations design.

Simulation name	Time period	Wind forcing	Physical OBC	Biogeochemical OBC	DO OBC	Oxycline depth trend (m dec−1)
Si-Control	1958–2008	NCEP downscaled int	SODA int	CARS-WOA clim	CARS clim	− 6.4 [− 9.0, − 3.7]
Si-CFSRi	1979–2008	CFSR* int	SODA int	CARS-WOA clim	CARS clim	− 4.1 [− 6.6, − 1.6]
Si-ERAi	1979–2008	ERAI* int	SODA int	CARS-WOA clim	CARS clim	− 4.3 [− 7.0, − 1.7]
Si-Control-DO	1979–2008	NCEP downscaled int	SODA int	CARS-WOA clim	CARS clim. + trend	− 7.8 [− 10.5, − 5.2]
Si-NCEPDc	1979–2008	NCEP downscaled clim	SODA int	CARS-WOA clim	CARS clim	− 3.0 [− 6.1, − 0.2]
Si-SCOWc	1979–2008	SCOW clim	SODA int	CARS-WOA clim	CARS clim	− 3.0 [− 5.9, − 0.1]
Sc-NCEPDi	1979–2008	NCEP downscaled int	SODA clim	CARS-WOA clim	CARS clim	0.9 [0.6,1.2]
Sc-CFSRi	1979–2008	CFSR* int	SODA clim	CARS-WOA clim	CARS clim	− 0.03 [− 0.5, 0.4]
Sc-ERAic	1979–2008	ERAI* int	SODA clim	CARS-WOA clim	CARS clim	0.25 [− 0.6, 0.06]

Characteristics of the numerical simulations (simulation name, time period, wind forcing, physical open boundary conditions (OBC), biogeochemical OBC, DO OBC and oxycline trend). Asterisks in the wind forcing column indicate that the forcing is composed of a SCOW monthly climatology and atmospheric model monthly anomalies. “int” means interannual and “clim” means climatological. Oxycline trends are indicated in bold font when statistically significant, along with the corresponding confidence interval.