If you look at the 45N - 65N SST you can see the peak volcanic impact ~ 1918 and the more rapid recovery peaking in ~ 1940 while the SH lagged 20 years. (judithcurry.com)
Mignot, J., Khodri, M., Frankignoul, C. & Servonnat, J. Volcanic impact on the Atlantic Ocean over the last millennium. (nature.com)
Carbon budgets, Arctic sea ice minimum, methane emissions, hurricanes, volcanic impacts on climate... Please try and stick to these or similar topics. (realclimate.org)