Ancient Sponges Show Planetary Warming More Than 1.7 Centigrades Already. 4 Years Ago!

And these are tropical sponges. Warming is greater in polar and mountainous regions… Considering all the gathering disasters, global man-made warming is nearly relaxing, in an exponential sort of way. Now we have one more formal proof that the warming is in excess of 1.7 Centigrades… Already… 

300 years of sclerosponge thermometry shows global warming has exceeded 1.5 °C

This winter, in the Western Alps, temperatures have been in excess of ten degree Centigrades above normal… for several weeks. Some ski resorts with more than 65 lifts found themselves without any snow whatsoever in Switzerland. That’s not from drought: thanks to a super El Nino, the fifth strongest since 1950, Western Europe got record amounts of rain…and thus snow, high enough. However the snow-rain limit is 1,500 meters (5,000 feet) higher than normal.

Since the dawn of the civilization, human activities warmed the planet by considerably more than today’s most widely accepted estimates imply. Indeed, first of all, lions got replaced by cattle. Lions eat all species from rabbit to cattle, and humans wanted to eat and milk cattle instead. But cattle make methane, a strong greenhouse gas. So, for at least 5,000 years, the planet enjoyed a man-made methane blanket.

Now new information about Earth’s past climate comes from a new source: centuries-old sponges living very deep in the Caribbean Sea.

Networks of sensors have measured the rising temperatures of recent decades with great precision. However scientists typically combine this data with 19th-century thermometer readings that were spotty and sometimes produced faulty higher readings (some of these readings are so high, they are considered increasingly as inadmissible; for example even record high readings in Death Valley from the early 20th-century).

By examining the chemical composition of six (!) sponges’ skeletons, which the creatures built up steadily over centuries, the researchers pieced together a more precise evaluation of the earliest man-made warming (the sponges are so deep, 100 meters, ten atmosphere, they need special submarines and divers breathing part 60% Helium to grab them).

The measurements of old sponges point to a startling conclusion: Humans raised global temperatures by a total of about 1.7 degrees Celsius, or 3.1 Fahrenheit, over the baseline, not 1.2 degrees Celsius, the most commonly used propaganda value.

“It’s a bit of a wake-up call,” said Malcolm T. McCulloch, a geochemist at the University of Western Australia and one of the scientists who worked on the new research.

Prevailing estimates of the planet’s warming are a political hot potato. To mitigate them, scientists, anxious to please their paymasters, have used rolling averages… The warming has been evaluated by comparing with averaged conditions between 1986 and 2005, not conditions during preindustrial times… when the temps were clearly lower, and should have been that way. Limiting global warming to 2 degrees Celsius and, if possible, 1.5 Celsius, as stipulated under the 2015 Paris Agreement is then a bit tongue in cheek.

Revised temperature estimates for the 19th century therefore do not change our fake understanding of whether these guardrails have been breached.

The two drastic coolings below marked T and K are the Tambora and Krakatau explosions... They are well-documented... Notice that the "LAND" thermometer readings, planet-wide, show a warming since 1960, which is well in excess of TWO (2) C... And this does not count the extravagant warming of 2023... the warmest year in more than 100,000 years, since the Eemian...  
Patrice Ayme
From Nature Climate Change Published February 5, 2024 (today!):

Anomalies relative to 1961–1990 baseline with +0.9 °C offset (unless indicated). a, OML and Berkeley land12 temperature anomalies with onset of extreme land-air temperature from about 1990 (pink shading). b, GMSTs from blended OML and land12 anomalies (this study dark red circles) and from blended HadSST4 and land temperatures12 (orange circles), the latter relative to IPCC 1850–1900 pre-industrial period, which underestimates global warming by ∼0.5 °C. See refs. 11,12,13 and Supplementary Data for uncertainties. c, OML and HadSST4 of >1.5 °C and land >2 °C temperature increases by 2020. d, GMST records for blended OML + land and blended HadSST4 + land with 1.5 °C passed during 2012–2015. At current rates of emissions 2 °C global warming will be reached by late 2020s. Historic evolution of atmospheric CO2 (solid line), future increases with present-day rates of emissions (dashed line) and 10% annual reductions from 2025 to halve emissions by early 2030 (dotted line).

Abstract

Anthropogenic emissions drive global-scale warming yet the temperature increase relative to pre-industrial levels is uncertain. Using 300 years of ocean mixed-layer temperature records preserved in sclerosponge carbonate skeletons, we demonstrate that industrial-era warming began in the mid-1860s, more than 80 years earlier than instrumental sea surface temperature records. The Sr/Ca palaeothermometer was calibrated against ‘modern’ (post-1963) highly correlated (R2 = 0.91) instrumental records of global sea surface temperatures, with the pre-industrial defined by nearly constant (<±0.1 °C) temperatures from 1700 to the early 1860s. Increasing ocean and land-air temperatures overlap until the late twentieth century, when the land began warming at nearly twice the rate of the surface oceans. Hotter land temperatures, together with the earlier onset of industrial-era warming, indicate that global warming was already 1.7 ± 0.1 °C above pre-industrial levels by 2020. Our result is 0.5 °C higher than IPCC estimates, with 2 °C global warming projected by the late 2020s, nearly two decades earlier than expected.

Tags: Above 2 C, Ancient Sponges, Climate Changek, temperature