Once more the false alarmism and hysteria about climate change!
How accurate are these measurements? Very doubtful given the expanse of the oceans. There were probably not sufficient orbiting satellites with such capabilities before 30-40 years ago.
And such tiny variations are perhaps natural and nothing to worry about! The article actually hints at that.
"The rate of ocean warming has more than quadrupled over the past four decades, a new study has shown. Ocean temperatures were rising at about 0.06 degrees Celsius per decade in the late 1980s, but are now increasing at 0.27 degrees Celsius per decade. ...
Global ocean temperatures hit record highs for 450 days straight in 2023 and early 2024. Some of this warmth came from El Niño, a natural warming event in the Pacific. ..."
And take the El Niño–Southern Oscillation as an example, it was not really understood until the 1980s. So what else do we still not understand very well about our oceans? I bet a lot!
Like to much else regarding the Global Warming hoax and the Climate Change religion this research is also heavily based on computer simulation. Garbage in, garbage out.
From the abstract:
"Global mean sea surface temperature (GMSST) is a fundamental diagnostic of ongoing climate change, yet there is incomplete understanding of multi-decadal changes in warming rate and year-to-year variability.
Exploiting satellite observations since 1985 and a statistical model incorporating drivers of variability and change, we identify an increasing rate of rise in GMSST. This accelerating ocean surface warming is physically linked to an upward trend in Earth's energy imbalance (EEI) [???]. We quantify that GMSST has increased by 0.54 +/-0.07 K for each GJ m–2 of accumulated energy, equivalent to 0.17 ± 0.02 K decade‒1 (W m‒2)‒1. Using the statistical model to isolate the trend from interannual variability, the underlying rate of change of GMSST rises in proportion with Earth's energy accumulation from 0.06 K decade–1 during 1985–89 to 0.27 K decade–1 for 2019–23.
While variability associated with the El Niño Southern Oscillation triggered the exceptionally high GMSSTs of 2023 and early 2024, 44% (90% confidence interval: 35%–52%) of the +0.22 K difference in GMSST between the peak of the 2023/24 event and that of the 2015/16 event is unexplained unless the acceleration of the GMSST trend is accounted for. Applying indicative future scenarios of EEI based on recent trends, GMSST increases are likely to be faster than would be expected from linear extrapolation of the past four decades. Our results provide observational evidence that the GMSST increase inferred over the past 40 years will likely be exceeded within the next 20 years. Policy makers and wider society should be aware that the rate of global warming over recent decades is a poor guide to the faster change that is likely over the decades to come, underscoring the urgency of deep reductions in fossil-fuel"
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