text: The hypothesis of manmade global warming depends on manmade greenhouse gases being the cause of the recent warming. But the satellite-era sea surface temperature record indicates El Nio and La Nia events are responsible for the warming of global sea surface temperature anomalies over the past 31 years, not manmade greenhouse gases. And ocean heat content data since 1955 indicate the tropical oceans warmed naturally to depths of 700 meters in response to La Nia events. Ive searched sea surface temperature records for more than 4 years and the ocean heat content records for more than 3 years, and I can find no evidence of an anthropogenic greenhouse gas signal in those two datasets. That is, the warming of the global oceans has been caused by Mother Nature, not anthropogenic greenhouse gases.