As we enter the Age of Aquarius due to the Precession of the Equinoxes we are reminded of the Octave quality of Time on Earth. The Seasons turn into Years, and then into Ages, and even into Eras and Eons as we discover ever larger Precession cycles.
Global Warming is undeniably getting a lot of attention lately, and the frequency of major earthquakes is generating interest into the end of the Mayan Calendar Long Count possibly near the Winter Solstice of 2012. However, the Mayans probably knew that a new Long Count meant the beginning of a new cycle or Season and not the end of the World as some expected.
The Precession of the Equinoxes around the Ecliptic is about 26,000 years and is divided into four Seasons of 6,500 years each. This places the end of Precession Winter and Ice Age 13,000 years ago, the end of Spring 6,500 years ago and the end of Summer and the highest temperatures just about now. While Fall is slowly rolling in, it may be centuries before we see any significant cooling on a 6,500 year Season.
Recent work going back 400,000 years has shown a rise and fall in temperature every 104,000 years which coincides with the larger and lesser known Precession of the Ecliptic cycle related to the plane of the Milky Way and made up of four Seasons of the smaller Precession of the Equinox.
The chart below clearly shows that temperature rises dramatically every 104,000 years on average and warming was expected at this time. Man has amplified the effect with the release of CO2 and may push us higher than ever.
more about Milankovitch cycles
Many Ancient Civilizations placed much emphasis on the Precession of the Equinoxes as seen in monuments like the Pyramids and others, and some evidence suggests that their concern were founded.
The last Precession of the Equinox Winter ended 13,000 years ago as the Younger Dryas Glacial period ended, but it also came with a Mass Extinction which left a visible layer of Iridium in North America that is normally created by volcanic activity or an asteroid impact which is the generally accepted view.
The asteroid impact theory does not fit all the facts and volcanic activity is the more likely source, since it is a recurring theme with the Precession of the Equinox as we will see below.
Going back 26,000 years, or one Precession of the Equinox takes us to the Oruanui Eruption or the largest of the last 70,000 years when the Taupo volcano erupted with a VEI index of 8 which is 100 times bigger than the VEI 6 of the Krakatau eruption of 1883 and left a 40 km wide caldera.
Going back three Precession of the Equinox takes us to the Toba Super Eruption of 69,000 to 77,0000 years ago which is now considered to have affected all Life on Earth. The good news is that not all Precession cycles are as severe as the beginning of Winter 77,000 years ago, and the current end of Summer will probably be less severe.
more about Toba Catastrophe Theory