4 Billion Years of Climate Change


For the past several weeks, I have been planning on sending the link to  “The Grand View: 4 Billion Years Of Climate Change”.  The article is from the book “The Resilient Earth” by Doug Hoffman and Allen Simmons. It is really informative and for those of us that can’t keep on geological Eras, Periods, or the years relating to them straight,  it is a reference you might want to keep.

early_bombardment-500 Early Earth–From “The Resilient Earth

To give you a taste of what is covered, look at the following:

Observations

That concludes our whirlwind tour of Earth’s climate history. There are a number of observations that can be made from our overview of the Phanerozoic:

Earth’s temperature is always changing.

Over time there have been periods when it has been colder than it is today.

For most of the Phanerozoic it has been much warmer than it is today.

Life has persisted during periods both hot and cold.

There is no one “right” temperature.

Carbon dioxide has always been present in Earth’s atmosphere.

Over time there have been periods when CO2 has increased and decreased     naturally.

For most of the Phanerozoic it has been much higher than it is today.

Life has persisted during periods with high CO2 and low CO2.

CO2 levels will change with or without human contributions.

Over time there have been a number of ice ages—Life has endured multiple ice ages.

For most of the Phanerozoic there have been no persistent polar ice caps.

eras_and_periods-250

Eras and Periods from The Resilient Earth

To read the  article   click here

Cbdakota

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3 responses to “4 Billion Years of Climate Change

  1. Thanks for the plug. Book is doing good. Appreciate your work, keep at it.
    Truth in science will win out over lies and spin. Nature will always sort out fact from fiction.

  2. I was led to your work by Observatorio ARVAL website. It seems to provide information I need for a high-school level work (sequel to A World of Physics; see website). It was suggested I might be able to download sections. Please advise.
    Thanks; RPB

    • Robert, my apologies for not getting back to you. I have been until very recently,working on my daughter’s house and it has been a full time job. Please use what ever you need. Again, sorry!!

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