The observed upper-ocean warming of the past 50 years is only consistent with climate models that include the impacts of observed increases of greenhouse gas during the 20th century. The warming cannot be explained by natural events alone.
This is the first study to provide an in-depth examination of how observational and modeling uncertainties impact the conclusion that humans are primarily responsible for the warming, according to the Lawrence Livermore National Laboratory (LLNL) news release.
Overall, the world's oceans have been warming at a rate of 0.025 C per decade.
Upper oceans' heat content anomaly trend since 1993. Courtesy NOAA.
Keep in mind, the oceans account for more than 90% of the heat accumulated over the past 50 years as the earth has warmed.
Excerpt from the LLNL release.....
"Although we performed a series of tests to account for the impact of various uncertainties, we found no evidence that simultaneous warming of the upper layers of all seven seas can be explained by natural climate variability alone. Humans have played a dominant role," said Peter Gleckler, an LLNL climate scientist and lead author of the new study that appears in the June 10 edition of the journal, Nature Climate Change.
A way to reduce the gap between climate models and reality.
What is the scientific method? What does the peer-reviewed process involve?
Greenland's glaciers that flow into the ocean are grounded deeper below the surface of the ocean than previously thought, which could mean an even greater sea level rise than current estimates.
Update on atmospheric CO2, mountain glacier retreat, extreme temperatures and fires.
For the fourth time this year, a new, global record high monthly temperature has been set.
The annual State of the Climate report for 2014 has been released.