Oceans at warmest recorded temperatures for fifth consecutive year, page-21

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15,689 Posts.

17/01/20

16:46

Post #: 42440006
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Originally posted by bellcurve: ↑

As it does every year, NOAA produces an annual global climate report. This year’s report, which was published earlier this week and is available at ncdc.noaa.gov, includes analysis on ocean heat content, or OHC.

”Ocean Heat Content (OHC) is essential for understanding and modeling global climate since > 90% of excess heat in the Earth's system is absorbed by the ocean. Further, expansion due to increased ocean heat contributes to sea level rise. Change in OHC is calculated from the difference of observed temperature profiles from the long-term mean,” NOAA says.

”Ocean heat content (OHC), for the upper 2000 meters, for 2019 was the highest in the 70-year record at 228 ZJ (Zeta Joules; 1 ZJ = 1021 Joules) above the 1981–2010 average. The 2019 OHC bested the previous record set in 2018 by 25 ZJ.

”The five highest OHC have all occurred in the last five years (2015–19), while the last ten years (2010–19) have the 10 highest OHC on record.

”During 2019, the heating was distributed throughout the world's oceans, with the vast majority of regions showing an increase in thermal energy. The Atlantic Ocean and Southern Oceans (especially near Antarctic Circumpolar Current, ACC, (40°S–60°S) continued to show a larger warming compared to most of the other basins.

”The ocean heating is irrefutable and a key measure of the Earth's energy imbalance: the excess greenhouse gases in the air trap more heat inside the climate system and drives global warming. More than 90% of the heat accumulates in the ocean because of its large heat capacity, and the other heating is manifested in warming the atmosphere, warming and drying land, and melting land and sea ice.

”There are no reasonable alternatives aside from the human emissions of heat-trapping gases (IPCC 2001, 2007, 2013, 2019; USGCRP 2017).For additional information on the 2019 OHC, please see the paper titled Record-Setting Ocean Warmth Continued in 2019.”

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Why does no one actually mention that the temperature change discussed is actually less than 1/10th of a degree over 25 years? Interesting.
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