Cause and Effect. No issue is more turned upside down in the global warming debate than global temperatures and CO2 levels. That CO2 levels change during the past glacial and interglacial periods is very well documented. It has been used as the basis for climate sensitivity calculations by many warmists. There is one problem with determining the climate sensitivity based on CO2 feedback forcing. It assumes that at least some of the temperature change is caused by changing CO2 levels.
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That the NH has been cooling for the past 6,000 years has found new supporting evidence in a recent article (Jakobsson, 2010) that states in the abstract:
“The combined sea ice data suggest that the seasonal Arctic sea ice cover was strongly reduced during most of the early Holocene and there appear to have been periods of ice free summers in the central Arctic Ocean.”
Posted November 1st, 2010. 4 comments
Over the past 450,000 years there have been several major glacial/interglacial (ice age/current climate) cycles. The current interglacial has been “warm” for about 11,000 years now. This period is very commonly referred to as the Holocene interglacial. The current interglacial was “triggered” by a change in the orbital parameters of the Earth’s orbit. Climate sensitivity can be determined from this change.
Posted October 28th, 2010. 3 comments
While researching the AGW models of CO2 forcing I found a significant overstatement that severely weakens the stated impact of increasing CO2 levels.
Posted October 24th, 2010. 24 comments
Overview (Scientific Content below) There have been a variety of discussions in the past week about what ice core data tells us. There are several misconceptions about what information the ice core data contains. Some people believe that it is the air bubbles trapped in the ice that tell the temperature history of the Earth […]
Posted October 21st, 2010. 18 comments
People on both sides of the AGW debate often deride the other side for not accepting all the facts and data. The simple fact is that both sides are guilty of this. I will use the different trends at the two poles to illustrate this while also pointing out why the different tales are so […]
Posted October 15th, 2010. 19 comments
Over the last day I have received some questions about the satellite data and why I consider it more accurate. First I should define what station data is. Station data is temperature records that are made at any approved location that reports temperatures. The local news temperatures are likely sources that go into the station […]
Posted October 12th, 2010. 9 comments
Are these the same things? Many people that don’t worry about global warming worry about pollution. Others believe that saving energy will reduce pollution because CO2 emissions will be lower. Unfortunately pollution and CO2 are separate and independent things. In fact, many solutions for lowering CO2 result in more pollution. Ethanol is a great example […]
Posted October 6th, 2010. 2 comments
Part 1. The most common cause of coral bleaching is quickly changing temperatures. There is a common myth out there that coral can only survive in a very limited temperature range. That is completely inaccurate. The simplest explanation is that the ocean temperatures are always changing. The ocean temperatures for the Great Barrier Reef near […]
Posted October 3rd, 2010. Add a comment
What is the basis of global warming?
Global warming has a basis, but unlike the discovery of DNA it was a flawed theoretical idea, even from the beginning. Unfortunately it 80 years before it could fully be proven as incorrect and as a result the flawed idea had plenty of time to become well entrenched in the scientific community. There are few places harder to dislodge old, popular ideas than the scientific community.