Why does Exxon acknowledge AGW and you blather on oblivious to reality. They knew in the 70s - you haven't a clue going on 40 years later.
I can't answer "why" for Exxon but I can answer "why" for me
"CO2 is a “trace gas” in air, insignificant by definition. It absorbs 1/7th as much IR, heat energy, from sunlight as water vapor which has 188 times as many molecules capturing 1200 times as much heat making 99.8% of all “global warming.” CO2 does only 0.2% of it. For this we should destroy our economy?
There is no “greenhouse effect” in an atmosphere. A greenhouse has a solid, clear cover that traps heat. The atmosphere does not trap heat as gas molecules cannot form surfaces to work as greenhouses. Molecules must be in contact, as in liquids and solids to form surfaces.
The Medieval Warming from 800 AD to 1300 AD Micheal Mann erased for his “hockey stick” was several Fahrenheit degrees warmer than anything “global warmers” fear. It was 500 years of world peace and abundance,the longest in history.
Vostock Ice Core data analysis show CO2 increases follow temperature by 800 years 19 times in 450,000 years. Thus temperature change is cause and CO2 change is effect. This alone refutes the anthropogenic global warming hypothesis.
Methane is called “a greenhouse gas 20 to 500 times more potent than CO2,” by Heidi Cullen and Jim Hansen, but it is not per the energy absorption chart at the American Meteorological Society. It has an absorption profile very similar to nitrogen which is classified “transparent” to IR, heat waves and is only present to 18 ppm. “Green vegans” blame methane in cow flatulence for global warming in their war against eating meat."
and
"the 4 interglacial periods before our current one were all 2 degrees higher than now. And during this one the co2 level is 40% higher (and we're likely to be nearer the end of this interglacial) . You don't need much help from others to figure out that climate is hardly sensitive to co2 level. It also represents just 4/100 of one percent by volume of the atmosphere, so that would seem to be consistent."
source
macdoc said:
The climate does change naturally at times ...this is not one of those times. Take your denier crap to the conspiracy forum where it belongs.
You seem a little testy macdoc
Is that aleCcowaN
still giving you a hard time on
the correct way to defend AGW ?
No they don’t. They show the MCA as 0.5 – 1 deg C cooler than the last decade.OTE]
I disagree
During the Little Ice Age, average global temperatures were 1-1.5 degree Celsius (2-3 degrees Fahrenheit) cooler than they are today.
Lot's of other sources too and also see the reply to macdoc above about The Medieval Warming.
lomiller said:
What? How can you tell from a “written description” without actual temperature data, that temperatures changes were more extreme? What seems to be going on is that you are assuming 0.5 deg C isn’t very much because it’s smaller and slower than current changes when in fact it’s quite large.
Quite a lot actually can be gleaned from written historical records regarding temperature. The other advantage of disperse written historical records is that they are not very easily altered as climate models can be. Hockey anyone
Furthermore, the populated area of Greenland is a lot farther north now. Greenland’s population is centered around mining areas not the areas most suitable for agriculture as it would have been 600 years ago.
I don't see the Vikings rushing to colonise there again
“Our study shows a major shift towards cooler conditions and extensive sea-ice which coincides with the estimated time for the collapse of the Western Settlement in AD 1350," said Dr Ribeiro.
Did Climate Change Cause Greenland’s Ancient Viking Community to Collapse?