Wednesday, March 12, 2014

Global Warming Not Slowing - It's Speeding Up

Global ocean heat content 1955-2013. (Credit: www.nodc.noaa.gov) Click to enlarge.
In 2013 the Earth’s oceans accumulated energy at a rate of 12 Hiroshima atomic bombs per second, according to global ocean heat content records from the US National Oceanographic Data Center (NODC). This rapid heating in 2013 compares to an average of 4 Hiroshima bombs per second since 1998, and 2 bombs per second since records began in 1955.

This is not the usual way to begin an article about global warming observations, but I have chosen to do so because ocean heat content is objectively the most important piece of evidence.  The vast majority of heat from global warming goes into the oceans, so ocean heat content is a more reliable indicator of climate than surface or atmospheric temperature.  These data show global warming has accelerated in the last 15 years, contrary to denialist claims that global warming has “slowed”, “paused”, or “stopped” because the upper ocean, atmosphere, and surface have warmed more slowly in recent years.  Warming oceans fuel hurricanes, raise sea level, melt sea ice, devastate coral reefs, and force fish to migrate to cooler waters.

Global Warming Not Slowing - It's Speeding Up

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