Friday, October 12, 2018

Ocean Temperatures Have Been Rising Since 19thC | NOT A LOT OF PEOPLE KNOW THAT

Ocean Temperatures Have Been Rising Since 19thC | NOT A LOT OF PEOPLE KNOW THAT
"This paper published in 2012 has much relevance to my post a couple of days ago about ocean temperatures:
A new study contrasting ocean temperature readings of the 1870s with temperatures of the modern seas reveals an upward trend of global ocean warming spanning at least 100 years.
The research led by Scripps Institution of Oceanography at UC San Diego physical oceanographer Dean Roemmich shows a .33-degree Celsius (.59-degree Fahrenheit) average increase in the upper portions of the ocean to 700 meters (2,300 feet) depth. 
The increase was largest at the ocean surface, .59-degree Celsius (1.1-degree Fahrenheit), decreasing to .12-degree Celsius (.22-degree Fahrenheit) at 900 meters (2,950 feet) depth.
..."The significance of the study is not only that we see a temperature difference that indicates warming on a global scale, but that the magnitude of the temperature change since the 1870s is twice that observed over the past 50 years," said Roemmich, co-chairman of the International Argo Steering Team. "This implies that the time scale for the warming of the ocean is not just the last 50 years but at least the last 100 years."...
The significance of course is that the warming of the oceans began long before any impact from CO2 emissions.
HH Lamb has written extensively about how sea temperatures in the Atlantic fell radically during the LIA. 
Is the warming trend since then merely a return to earlier conditions?"
Read all.

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