by Lepre, J & Olsen P.E., Feb 21, 2021 PNAS
Hematite provides much of the color for the classic Triassic–Jurassic “red beds” of North America and elsewhere. Measuring the spectrum of visible light reflected and absorbed by the red beds, we demonstrate that the hematite concentrations faithfully track 14.5 million years of Late Triassic monsoonal rainfall over the Colorado Plateau of Arizona and use this information to assess interrelationships between environmental perturbations, climate, and the evolution of terrestrial vertebrates. The research challenges conventional ideas that the hematite has limited use for interpreting the ancient past because it is a product of natural chemical alterations that occurred long after the beds were initially deposited.
Hematite is the most abundant surficial iron oxide on Earth resulting from near-surface processes that make it important for addressing numerous geologic problems. While red beds have proved to be excellent paleomagnetic recorders, the early diagenetic origin of hematite in these units is often questioned. Here, we validate pigmentary hematite (“pigmentite”) as a proxy indicator for the Late Triassic environment and its penecontemporaneous origin by analyzing spectrophotometric measurements of a 14.5-My–long red bed sequence in scientific drill core CPCP-PFNP13-1A of the Chinle Formation, Arizona. Pigmentite concentrations in the red beds track the evolving pattern of the Late Triassic monsoon and indicate a long-term rise in aridity beginning at ∼215 Ma followed by increased oscillatory climate change at ∼213 Ma. These monsoonal changes are attributed to the northward drift of the Colorado Plateau as part of Laurentia into the arid subtropics during a time of fluctuating CO2. Our results refine the record of the Late Triassic monsoon and indicate significant changes in rainfall proximal to the Adamanian–Revueltian biotic transition that thus may have contributed to apparent faunal and floral events at 216 to 213 Ma.
by P. Homewood, Feb 9, 2021 in NotaLotofPeopleKnowThat
There is no “climate emergency”, according to a study for the Global Warming Policy Foundation by independent scientist Dr Indur Goklany.
While climate may have changed for the warmer:
• Most extreme weather phenomena have not become more extreme, more deadly, or more destructive
• Empirical evidence directly contradicts claims that increased carbon dioxide has reduced human wellbeing. In fact, human wellbeing has never been higher
• Whatever detrimental effects warming and higher carbon dioxide may have had on terrestrial species and ecosystems, they have been swamped by the contribution of fossil fuels to increased biological productivity. This has halted, and turned around, reductions in habitat loss
The report will make hugely depressing reading for all the prominent environmental activists — from the Pope and Doom Goblin Greta Thunberg to the Great Reset’s Klaus Schwab — who have been pushing the “climate emergency” narrative. It is an article of faith for the globalist elite and their useful idiots in the media, in politics, in business, and the entertainment that the world is on course for climate disaster which only radical and costly international action can prevent.
Continue reading “Delingpole: Study Disputes That Earth Is in a ‘Climate Emergency’”
by P. Gosselin, Feb 9, 2021 in NoTricksZone
The polar vortex theory takes a beating: The claim a warm Arctic is behind the brutally cold winter conditions at the mid latitudes is shown by a Nature study to be scientifically baseless.
Now that Europe and North America are getting blasted by unusually severe winter weather, which climate alarmists predicted 20 years ago would be a thing of the past, the alarmists are desperate to find an explanation to escape embarrassment.
PIK science suggests warmth begets cold
They’ve come up with the polar vortex explanation: the bitter cold we are now experiencing at the middle latitudes is in fact due to the warmer Arctic, they say. And this wreaks havoc on the jet stream which in turn results in cold Arctic blasts dipping deep into the middle latitudes. Yes, cold winters are in fact exactly what we should expect in a rapidly warming world!
Levermann and Rahmstorf
For example the two media front men Anders Levermann and Stefan Rahmstorf of the Potsdam Climate Institute (PIK) have been telling this to the ever gullible German media outlets, like Bild and Spiegel. Yet, many suspect it’s scientific fraud designed to fool the public and to hide the fact that their global warming predictions are in reality glaring failures.
Journal Nature refutes fantasy-rich PIK explanation
For example a recent paper appearing in Nature titled “Weakened evidence for mid-latitude impacts of Arctic warming“, authored by Blackport et al, refutes this highly fantasy-rich hypothesis pitched by the two PIK scientists.