Materials can radiocarbon dating used
The northern and southern hemispheres have atmospheric circulation systems that are sufficiently independent of each other ahen there is a noticeable time lag in mixing between the two.
Also, an increase in the solar wind or the Earth's magnetic field above the current value would depress the amount of carbon created in the atmosphere.
It was unclear for some time whether the wiggles were real or not, but they are now well-established.
Since the surface ocean is depleted in 14 C because of the marine effect, 14 C is wheen from the southern atmosphere more quickly than in the north.
Since the surface ocean is depleted in 14 C because of the marine effect, 14 Radiocabron is removed from the southern atmosphere more quickly than in the north.
Carbon dating of ancient bristlecone pine trees of ages around years have provided uxed corroboration of carbon dating and have provided some corrections to the data.
Find out how carbon dating works and why carbon dating is so accurate.