Don: Yes, you can always hide behind the uncertainty of the statistics. But there are several facts that are beyond doubt. 1. There is a lot more CO2 in the air than there was 300 years ago, and it all came from burning coal and oil. 2. We know that CO2 is a greenhouse gas, and we can measure it's effect in the lab. Dead simple college chemistry. 3. We know WHY CO2 raises temperature in gases, It's simple physics. beyond doubt. 4. We can see the effect on the planet Venus, just to keep this an astro topic. What we are left quibbling about is whether it has started happening YET. So how close to the edge of doom are we supposed to ride before it's time to stop burning carbon? DT
________________________________ From: Don J. Colton <djcolton@piol.com> To: 'Utah Astronomy' <utah-astronomy@mailman.xmission.com> Sent: Wednesday, June 25, 2014 7:43 AM Subject: Re: [Utah-astronomy] OT: latest climate news
I was involved in the 80's in the Greenland Ice Core Temperature History Data. The Sargasso Sea temperature history data also supports the Greenland data. Both of these data sets show warming since the 1700's but it just appears to be normal cyclical data since the earth was warmer during the Medieval Warming Period around 1100 AD before cooling into what was known as the Little Ice Age in the 1700's. The earth was also substantially warmer during portions of the Roman era than it is today after coming out of the last Ice Age about 10,000 years ago. These data sets are objective as opposed to subjective tree ring data that has been averaged into many charts by proponents of man caused global warming. Averaging subjective data with objective data is questionable science. Both data sets should be presented separately.
The question is: How much of current warming is caused by fossil fuels and how much is caused by natural cyclical changes?
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