Equatorial Pacific Ocean Temperature Changes During 5 Tg Black Carbon Injection

Cross-section plots of the equatorial Pacific ocean temperatures anomalies, zonal, and vertical velocities are shown below for the nw_cntrl_03m03 control run and nw_targets_01m03 5 Tg black carbon injection. Temperature anomalies are calculated using a climatology from years 0005-0021 of nw_cntrl_03m03. There is a slight trend in Ocean Heat Content (OHC) in the equatorial Pacific but I don't think it's large enough to impact what these plots illustrate. What is clear is that there is a warm temperature anomaly in the Western Pacific Warm Pool at depth at the beginning of nw_cntrl_03m03 and nw_targets_01m03, which is priming nw_targets_01m03 for an El Nino after cooling from the stratospheric black carbon injection triggers a Westerly Wind Burst (WWB) in the Western Pacific.

An El Nino does develop in nw_cntrl_03m03, as warmer waters make it to the surface during 0006-02, but the development of the El Nino is sped up in nw_targets_01m03 due to a weakening of the trade winds.

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