What really sets the global climate? – Watt?

Kirby Schlaht

What really sets the global climate? The Million Year Ice Nuclear Project (MYIC) (Follow Bruinsky) has been going on for several years to prepare to drill the oldest continuous ice nuclear record from Antarctica. The project is a major factor in the Australian Antarctic Program, led by the Australian Antarctic Division and other national and international collaborators to answer this question.

Now, in 2025, the Australian Antarctic Division is leading one of the most ambitious and challenging scientific projects in Antarctica, which is excavating a million-year ice core in the history of the Earth's climate and atmosphere. This continuous climate record will help solve long-term mysteries about the time and duration of past “ice eras” detected at the core of marine sediments (Figure 11). These sediment nuclei with fossil foraminifera show records of proxy temperatures, which show that the cycle of “ice age” about a million years ago changed from a conventional interglacial ice age of 41,000 years to every 120,000 years cycle.

One popular theory is that the decline in atmospheric carbon dioxide levels is the cause of longer, colder ice expansion. New million-grade ice core records may provide essential atmospheric gas records to test the theory.

We can see in the 1998 Vostok Ice Core data from Antarctica that temperatures have led to millions to thousands of years of development with the rate of CO2. The simplest thing is, this suggests that temperature is not carbon dioxide that drives climate change. Then what drives the temperature change? Some people might say “Too complicated“.I beg to differ.

The following Antarctic Epica C ice core temperature proxy data show Milankovitch orbital period forcing. Although many correlations can be identified, it makes sense that higher inclination increases, especially for higher driving temperatures and polar regions during ice, while lower inclination provides less settlement , cool temperatures and glacier expansion. Now, the effective inclination angle can be modified up to 1 degree, superimposing the effective inclination angle to the precession cycle of 20k years, with the result being a fusion of high inclination, high inclination and high eccentricity, providing enough to break the cold feedback loop The solar term changes (water vapor and iceberg) in the previous glacier expansion period. After 20,000 years of ice age, high eccentricity, low inclination and low-point drive temperatures, the cold-ice albedo's feedback loop occupied a lowered and grabbed our icy grip for a hundred thousand years.

Are ice cores extracted from Greenland the same climate change and timeline as Antarctic? The agent temperature record below shows us details of the interglacial glacial period in Greenland. About 120,000 years ago, the interglacial glaciers between glaciers developed to the subsequent glacial expansion period. As the eccentricity and inclination just began to drop, we saw the temperature “high jump” (doing events) tightly packing the time zone. These hot blades may be a solar activity-driven warm-up. We can see the short duration of the event and the long-term cold recovery. As we approached the midpoint of glacier expansion, we saw some gaps in temperature spikes without occurring. These correspond to low tilt periods (3 during ice expansion). The periodic solar cycle of the hot events that are brought to us during high tilt cannot break through the cooler low tilt feedback wall. The same is true for the unblocked sun spike when the high tilt returns. When the earth approaches the closest distance from the sun, it continues to the fusion of high tilts, and high eccentricity will produce a series of obvious Northern Hemisphere summers (Apogee). This led to breaking the ice – Ardido's feedback and subsequent degassing and the 20k-year interglacial period – which is what we call the Holocene. We should not expect that the Ice Age climate oscillation suddenly renders the basic planetary orbit process of the Ice Age climate oscillation suddenly invalidates parts of certain traces of atmospheric gas. To predict the future of climate change – in about 10k years, the eccentricity rate was still high and the tendency was reduced, and the offense produced a period where the northern hemisphere summer occurred near the summit, with a high eccentricity and a low tendency, resulting in the summer becoming Warmer, and these periods of summer in the southern hemisphere become significantly colder near perigee, leading to rapid expansion of sea ice and the next 100k-year glacial expansion period.

Through sampling the two polar regions and the special resolution of Greenland, we see the same basic climate change. Over the past 800,000 years or so, there has been a 20k-year warm pattern of interglacial climate change, followed by a 100k-year cold ice age. During glacier expansion, we see solar activity-driven warming peeking through highly sloping windows with low sloping shadows and suppressing any sun effects. Great! It seems to explain a lot. It seems very clear. Milankovic cycle and cold feedback loop. No explanation A big change although. Why does the periodicity of interglacial cycles change from 41k years to 120k years a million years ago (Figure 11)? The 41k-year slope cycle appears to be dominant in the glacial ice cycle in the early Pleistocene, lasting for 2 million years. What has changed? Furthermore, what makes the Earth's climate oscillate first?

A big change

Judging from the story of climate change, I list the paradigm transfer ideas we can call the cosmic ray/cloud hypothesis (Svensmark). This concept of cosmic radiation/ionization/cloud formation can now be expanded. Receive the centrality of cosmic ray ionization in cloud modulation and, with observational and mechanical support, I suggest that climate is sensitive to the amount of lower tropospheric ionization caused by high-energy galactic cosmic rays (CR). High energy radiation in the lower atmosphere means more ionization, more aerosols, more and whiter low-level clouds, resulting in a cooler climate. Alternatively, less radiation in the lower atmosphere means less clouds drive a warm climate. We can call this integration process the Cloud-Albedo effect.

The Earth's tropospheric cloud cover and long geological timescale modulation of global temperature is driven in a top-down process, starting with a high-energy galactic radiation change that originates from the Milky Way orbit position within the Milky Way spiral structure. This produces a low-frequency climate response: as we cross the inter-arm space and the ICEHOUSE period of 10 to 200 million years, as we cross the galactic spiral arms, our CR speed and the ICE chamber period of 10 to 200 million years, elevated and The ICEHOUSE period from 10 to 200 million years has a chimney period of 50 million years. Our solar system also experiences out-of-plane perturbations of the galactic orbit oscillation. Our plane orbital motion then further regulates the galactic cosmic radiation intensity of plane polarization. This is a secondary driver of higher frequency climate responses: periodic 30 million years of warming – then cooling, then warm cycles. This signal is superimposed on the background spiral arm radiation sign.

Galaxy radiation intensity sets the baseline temperature for all other drives to vary. For the last 50 million years of our Galaxy Orbit, we have been crossing the Sagittarius spiral arms. The added baseline spiral arm radiation brings us further into the igloo's cold room. Meanwhile, the radiation intensity and temperature oscillate up and down in line with our plane motion. Now, we are fully oriented towards cosmic rays, to the greatest extent. This promotes an increase in tropospheric cloud coverage, which can further cool the Earth. If the baseline temperature driven by the planet's spiral radiation drops to a critical minimum, our vertical galactic orbit oscillations lower our almost entirely inner panels, the Ice Age Ice Age occurs. Now we are very vulnerable. Other short-term forces, such as planetary orbit dynamics, ice-Alberto feedback, plate tectonics, volcanoes, solar activity or proximal celestial events, may push the Earth into a mature glacial ice age or “snowball” scenario.

Here, we are in the middle of the Pleistocene Ice Age. So far, our climate has oscillated between cold and icy climates and warm interglacial climates over the past 3 million years. The 41k-year interglacial ice age, driven by planetary tilt, occupied 2 million years in the Pleistocene. One million years ago, the interglacial ice age transformed into the current 120 millennium. What has changed in the past 3 million years? The answer should be obvious, the temperature has changed. A million years ago, the global temperature was colder than before, and today it ended up being colder. A million years ago, we were approaching the bottom of the galaxy plane and the cold climate trough of this Pleistocene. The closer we get to the bottom. In fact, what is so cold is that high tilt alone cannot break the ice-Alberto's feedback loop. All three planetary orbit parameters – tilt, weird, offensive – must work together in a 1.2 million-year cycle to melt our icy graves to eventually immerse themselves in the highly tilted sun again – into the next warm glacier.

Where are we now?

One million years later Excellent switchwe are here now. Our current climate is warm among glaciers. We have passed the optimal temperature between glaciers (high inclination) and are continuing to cool because the tilt movement is moving lower down to the next glacier start point, about 10 thousand years from now, high eccentricity and low inclination will drive Rapid sea ice expansion, the next 100k-year glacier period. From a broader perspective, assuming we are currently at the midpoint of the Pleistocene Ice Age and at the bottom of the currently cold climate trough, symmetry suggests that as we plan with the cycle of glacier mutual ice age, we will experience The slow temperature finally dissipated for another 3 million years or so, becoming dominant among the ice.

at last

I'm not sure if the new extensive Antarctic ice core record will change my mind as it's the ultimate driver of global climate, but visualization may inspire Excellent switch Climate change from the Southern Hemisphere by oxygen 18 isotope temperature proxy.

Related