Let’s talk about the atmosphere

To the editor:

I am in complete agreement with the July 5 letter writer’s call for “features in these newspapers” on the atmosphere.

Let’s have a discussion on how we are apparently back to 400 ppm of carbon in the atmosphere, last seen “some millions of years in the past.” Perhaps the same natural cause then is the natural cause now.

Let’s discuss how the operative phrase has changed from “global warming” to “climate change.” Nice trick. One could at least debate the cause of short term global warming, but what’s the point of discussing “climate change”? Certainly it’s either getting warmer or cooler. I’ll concede that point.

But we’re talking about cycles in the 10s and 100s of millions of years. Earth has gone through numerous ice ages. In fact we are in the midst of the most current one. The earth has cooled and warmed over the past few 100,000 years. Even the most ardent environmental extremist would have a tough time blaming that on human intervention.

Kevin Schleppenbach
Apple Valley

  • May

    Kevin, 97% climate scientists see the situation differently. Yes, there
    are natural causes of climate change. Milankovitch cycles, the position
    of the continents, times of abundant active volcanic activity, and ENSO to name a few. What is different about the last 150 years is
    that we are emitting over 9 billion gigatons of carbon dioxide per year
    into the atmosphere and this amount will double in 50 years if we keep
    on our current path. The relationship between CO2 and global temperature
    is a well established fact. We have 800,000 years of ice core data
    that clearly show the correlation. Do you really want to go back to the
    Earth of 3 million years ago when sea level was 60 feet higher? (see http://www.livescience.com/19212-sea-level-rise-ancient-future.html)

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