- #1
DarioC
- 255
- 19
Reading a lot about climate change over the past few years has lead me to a question.
From looking at the available temperature charts for the past 450K years I have become curious about the lack of comment on the deviation for the last 12K years from previous periodic 124K year peak temperatures.
Previous 124K year cycles appear to average about 3 degrees Centigrade warmer at the peak than our present temperature. It appears from available charts, all in agreement, that about 12K ago the temperature rolled over at approximately the temperature we are experiencing now, never going near previous 124K peaks. That is to say there is a 10 to 12 K year "flat" spot that is in contrast with records of previous cycles which exhibit a rather sharp peak and then rapidly go into a stepped temperature drop.
I have been unable to find any reference to this seeming "anomaly," in climate discussions or literature.
Considering that the existence of modern civilization is due to the world not heading toward having a mile of ice over most of the presently temperate areas of the Earth that might be the situation had the cycle continued to a "normal" peak and flipped, one might expect the subject to get a little more attention.
Any experts here that care to comment, or can anyone give me ANY reference that addresses the subject.
From looking at the available temperature charts for the past 450K years I have become curious about the lack of comment on the deviation for the last 12K years from previous periodic 124K year peak temperatures.
Previous 124K year cycles appear to average about 3 degrees Centigrade warmer at the peak than our present temperature. It appears from available charts, all in agreement, that about 12K ago the temperature rolled over at approximately the temperature we are experiencing now, never going near previous 124K peaks. That is to say there is a 10 to 12 K year "flat" spot that is in contrast with records of previous cycles which exhibit a rather sharp peak and then rapidly go into a stepped temperature drop.
I have been unable to find any reference to this seeming "anomaly," in climate discussions or literature.
Considering that the existence of modern civilization is due to the world not heading toward having a mile of ice over most of the presently temperate areas of the Earth that might be the situation had the cycle continued to a "normal" peak and flipped, one might expect the subject to get a little more attention.
Any experts here that care to comment, or can anyone give me ANY reference that addresses the subject.