Sentences with phrase «during natural warming cycles»

This is the case during natural warming cycles.

Not exact matches

In a reconstruction of Pacific Ocean temperatures in the last 10,000 years, researchers have found that its middle depths have warmed 15 times faster in the last 60 years than they did during apparent natural warming cycles in the previous 10,000.

This is rather plain evidence that natural cycles have caused warming before during the Holocene and the same natural factors may be at play right now too.

During that time natural cycles like the Milankovitch cycles, would trigger warming releasing CO2 resulting in a positive feedback.

In no way can my summary of the research regarding the impact of regional climate change on the Viking civilization and Europe during the Little Ice Age be used to «prove» the current global warming is due to a natural cycle.»

Furthermore most of the papers in their compilation only studied responses during the warm phases of natural ocean cycles beginning in the 70s, after most marine organisms had retreated south.

It's as if the contributions to global average temperature are roughly half and half between long natural cycles and man - made global warming, such that during periods when the natural cycles are warming, we get quick, alarming warming.

But then during periods when those natural cycles are cooling, it's enough to pretty much balance out the warming from CO2.

If that is the cooling phase of a natural cycle, and that cycle was in a warming phase during the late 20th century, then about half the late 20th C warming was natural, and half due to AGW.

It seems for instance there is a 1 Kyear natural cycle leading to RWP about 2 Kyears ago and a MWP about 1 Kyear ago... See for illustration Ljungqvist 2010 Actually Global Warming observed during 19th and 20th centuries is very likely corresponding to LIA recovery, i.e. from the cool period of this 1 Kyear cycle.

except we've measured the deep ocean temperatures and found that those waters are holding the increased warming during one of the natural warming / cooling cycles.

«About 60 % of the warming observed from 1970 to 2000 was very likely caused by the above natural 60 - year climatic cycle during its warming phase.»

The much bigger fact that stands out is that there was no significant cooling trend during this time (when there should have been if we are in a natural cycle) and that we continued to have warmer years in 2005 and 2010 and soon to be 2014.

It also links the cycles to a natural 50 percent increase in atmospheric carbon dioxide during the 10,000 year period leading up to the peak of all recurring 116,000 year mega global warming cycles.

That's an interesting point, because some suspect that the mid-century surface «cooling» was due mainly to natural cycles, but if that were the case, we would expect to see ocean warming during that period.