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| Click on Sun to Enlarge |
In today's post we look at the cycle of the axial precession in terms of current calendar months.
We offer a hypothesis that this is a built-in cosmic global climate system dynamic (a ~26,000 year cycle).
The graphic above shows one complete cycle of the Earth's axial precession, i.e. one "rotation" of the axial tilt.
At each 30 degrees on the graphic there is a date, beginning with 10,948 B.C. @ 0 degrees, then continuing to the present time (2012 A.D. @ 180 degrees), then proceeding on around to 14,972 A.D. @ 360 degrees.
Which comprises and completes one axial precession cycle of the Earth's axial tilt (which is one global climate system axial precession cycle).
Each degree, of the 360 degrees total, represents 72 years so each 30 degrees represents 2,160 years, thus, an axial precession cycle takes about 26,000 years (25,920 yrs. to be more exact).
The reason the 30 degree segments of 2,160 years is used is because we hypothesize that this is the amount of time it takes the climate to change in terms of a one-month morph of that month's seasonal characteristics (see Government Climate Change Report - 5 and Government Climate Change Report - 4).
(RE: N. Hemisphere) The following list of months and their seasonal characteristics, in terms of being a Winter, Spring, Summer, or Autumn month, is shown for each date marked at every 30 degrees on the graphic at the top of this post:
10,948 B.C. (0 degrees)
(Winter) June, July, August
(Spring) September, October, November
(Summer) December, January, February
(Autumn) March, April, May
8,788 B.C. (30 degrees)
(Winter) May, June, July
(Spring) August, September, October
(Summer) November, December, January
(Autumn) February, March, April
6,628 B.C. (60 degrees)
(Winter) April, May, June
(Spring) July, August, September
(Summer) October, November, December
(Autumn) January, February, March
4,468 B.C. (90 degrees)
(Winter) March, April, May
(Spring) June, July, August
(Summer) September, October, November
(Autumn) December, January, February
2,308 B.C. (120 degrees)
(Winter) February, March, April
(Spring) May, June, July
(Summer) August, September, October
(Autumn) November, December, January
148 B.C. (150 degrees)
(Winter) January, February, March
(Spring) April, May, June
(Summer) July, August, September
(Autumn) October, November, December
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2012 A.D. (180 degrees)
(Winter) December, January, February
(Spring) March, April, May
(Summer) June, July, August
(Autumn) September, October, November
==========================
4,172 A.D. (210 degrees)
(Winter) January, February, March
(Spring) April, May, June
(Summer) July, August, September
(Autumn) October, November, December
6,332 A.D. (240 degrees)
(Winter) February, March, April
(Spring) May, June, July
(Summer) August, September, October
(Autumn) November, December, January
8,492 A.D. (270 degrees)
(Winter) March, April, May
(Spring) June, July, August
(Summer) September, October, November
(Autumn) December, January, February
10,652 A.D. (300 degrees)
(Winter) April, May, June
(Spring) July, August, September
(Summer) October, November, December
(Autumn) January, February, March
12,812 A.D. (330 degrees)
(Winter) May, June, July
(Spring) August, September, October
(Summer) November, December, January
(Autumn) February, March, April
14,972 A.D. (360 degrees)
(Winter) June, July, August
(Spring) September, October, November
(Summer) December, January, February
(Autumn) March, April, May
The gist of this is that about each 13,000 years (each 12,960 yrs. --at the time they developed it, to be more exact), the months of Winter in Washington, D.C. in the U.S.A. now (December, January, February) become the months of Summer (June, July, August) in terms of their seasonal type-of-weather orientation.
This happens because the axial precession reaches the maximum 180 degree
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| Axial Tilt @ Main Degrees of Precession |
It is not that the months change, no, they still have their 30, 31, 28/29. number of days per month, are still spelled the same, and January is still the first month while December is still the 12th month (etc.).
It is just that the axial tilt of the Earth toward or away from the Sun impacts upon the global climate system (in terms of which hemisphere is impacted with more solar energy).
This is an easy way to symbolically represent that change in the global climate system, in terms of the impact on weather at that geographical location.
The quantity of the impact on weather in the northern hemisphere (temperature change, rainfall, ice melt, sea-level, etc.), as well as on the global climate system itself, will be considered in later posts in this series.
The previous post in this series is here.
The following video shows an axial procession cycle:
