Old Rocks
Diamond Member
And your links are?Yappity yap yap. So you say. And I am Napoleon's reincarnation, also. We are anonymous on this board, so we can claim anything. The subject is the very recent climate, and the effect it will have on the presently living humans and those that come after us. And we are not ignoring paleoclimatology. In fact, that is where we are learning about how serious the rapidity with which we are changing the present atmospheric composition can affect the climate we depend on for our existance.
To understand the present you must look to the past. You see many instances of rapid change both positive, and negative, but you do not understand why they happened. So to try and use a micro-fraction of the data to come to a conclusion you've determined is certain is foolish.
You cannot separate the past from the present, no matter how hard you try.
You are the one trying to ignore the past. Trying to ignore the North American large mammal extinction from the rapid climate changes at the beginning and end of the Younger Dryas, trying to ignore the worldwide extinctions at other times of rapid climate change.
Here, learn something
NOAA Paleoclimatology Global Warming - The Story
Paleoclimatology: Climate Proxies
Paleoclimatology: The Oxygen Balance : Feature Articles
And there is far more available.
It'd probably help your case a lot if I wasn't the guy who points to that period, the Silurian, the Eocene, etc.
Consistently.
Consistently you come across as a blathering knownothing.
(Phys.org) —It's has been know that massive increases in emission of CO2 from volcanoes, associated with the opening of the Atlantic Ocean in the end-Triassic Period, set off a shift in state of the climate which caused global mass extinction of species, eliminating about 34% of genera. The extinction created ecological niches which allowed the rise of dinosaurs during the Triassic, about 250-200 million years ago.
New research released this morning in Science Express has refined the dating of this wave of volcanism. It shows marine and land species disappear from the fossil record within 20,000 to 30,000 years from the time evidence for the eruption of large magma flows appears, approximately 201 million years ago. These volcanic eruptions increased atmospheric CO2 and increased ocean acidity.
Figure 1 – Trends in atmospheric CO2 and related glacial and interglacial periods since the Cambrian (542 million years ago), showing peaks in CO2 levels (green diamonds) associated with asteroid impacts and/or massive volcanism. CO2 data from Royer 2004 and 2006.
Mass extinctions due to rapidly escalating levels of CO2 are recorded since as long as 580 million years ago. As our anthropogenic global emissions of CO2 are rising, at a rate for which no precedence is known from the geological record with the exception of asteroid impacts, another wave of extinctions is unfolding.
Mass extinctions of species in the history of Earth include:
- the ~580 million years-old (Ma) Acraman impact (South Australia) and Acrytarch (ancient palynomorphs) extinction and radiation
- Late Devonian (~374 Ma) volcanism, peak global temperatures and mass extinctions
- the end-Devonian impact cluster associated with mass extinction, which among others destroyed the Kimberley Fitzroy reefs (~360 Ma)
- the upper Permian (~267 Ma) extinction associated with a warming trend
- the Permian-Triassic boundary volcanic and asteroid impact events (~ 251 Ma) and peak warming
- the End-Triassic (201 Ma) opening of the Atlantic Ocean, and massive volcanism
- an End-Jurassic (~145 Ma) impact cluster and opening of the Indian Ocean
- the Cretaceous-Tertiary boundary (K-T) (~65 Ma) impact cluster, Deccan volcanic activity and mass extinction
- the pre-Eocene-Oligocene boundary (~34 Ma) impact cluster and a cooling trend, followed by opening of the Drake Passage between Antarctica and South America, formation of the Antarctic ice sheet and minor extinction at ~34 Ma.
Read more at: http://phys.org/news/2013-03-link-co2-mass-extinctions-species.html#jCp