.......................Disagree 😉..............not enough data for long enough to prove hypothesis.
Reply to this I did LOL..had a very interesting discussion with Mr Gore when he was here a few years ago promoting his doco...
My main area of study is geomorphology...we havent studied paleoclimatology long enough to draw a direct link between humans and climate change because.....humans have been here the blink of an eye and climate has always undergone changes.
We are a new species to this planet. We have been keeping accurate weather records less than 300 years. We have been in an abnormally stable climactic cycle for about 6000 years. Ice core samples show climate changes happen - sometimes over thousands of years, sometimes over hundreds of thousands of years, and sometimes over hundreds of years.
Example..Krakatoa or Thera going back even further. You have a large volcanic eruption, you have skies blanketed with ash for extended periods given all the parameters for extended decrease in daylight hours are in place. If all the parametres for less sunlight reaching the earth for less hours per day then you trip the climate change switch. While Mr Gore et al speak about global warming, from a different perspective, watch a doco called global dimming, its another phenomenom that has been keeping global warming in check as we industrialise, pollute, recognise an effect, apply a remedy...something we have only done in the last 30 years.
There have always been intense prolongued periods of global heating and cooling at different times throughout the planets history - I dont doubt we are in an intense warming period, Perth in Aus where i live has just recorded its hottest recorded march ever - and driest. There is also the La Nina event adding to flooding and inordinate amounts of rainfall on the east coast of Aus and parts of Asia.
PARTLY a consequence of human activity I would agree with, but to a very small degree. I am not saying humans havent made a helluva mess in a very short time frame, but I dont think we are the only reason for this climate ''swing''.
Heres another hypothesis, humans came along at a time when the climate was ending one period of stability and entering a new phase - the very end of a say 6000 year period, close enough to make a measurable difference in what was (is?) a natural cycle occurring so therefore are bearing witness to a cycle that wouldve happened anyway....just my thoughts.
Reply to this Yes, you are right. But no one can deny that human activity as pursued today is in no way or form providing a sustainable future for the next generations. Bio-diversity eradication, rising poverty and inequality, growing political conflicts.....
We're all to blame....
Peace
Reply to this I agree with Cindy. Climate scientists have been discredited by what was revealed in Climategate. They distorted data, selected data that supported their point of view and discarded data that didn't, suppressed requests for their data so that others could independently verify their conclusions (so much for the scientific approach), all in order to hide historical warming periods, especially the warming period from 800 - 1300 AD, which was much warmer than the present...i.e., the hockey stick.
I am an environmentalist, but am not a climate religious fanatic. I was Associate Driector for Sustainable Development for the U.S. Navy, and participated in the development of LEED that defines green buildings. A Navy enlisted quarters in Great Lakes, IL north of CHicago was the first to become LEED certified under their pilot program. I was at a meeting of environmentalist when the representative from the Natural Resourses Defense Council asked everyone whether they knew what was the world's largest green organization. No one knew. The answer he gave was "the U.S. Navy."
I believe in doing things that make sense. Conserving energy makes sense. Limiting CO2 does not make sense. I will never agree to spend trillions of dollars to bring average global temperatures down by 6/10th of a degree during the next century. There are much better uses for our scarce resources...clean water for an increasingly thirsty planet, clean air by using the best available technology, cures for diseases, etc.
This blog should probably stay away from political iisues, but since you asked...
Reply to this I couldnt not respond to you Bob - or Linda :-)
I am also an environmentalist, but I am an economic rationalist living in the most resource rich area of Australia. My Government wants to give me a carbon tax, which I will pay more because I am a resident of the state that has the highest income due to our onshore and offshore mining workers. Will the carbon tax reduce CO2? no. Will it result in higher investment in renewables? NO. Not in this state. I take my students often to wave and wind projects and the same story is told over and over..the govt gives us 5% research dollars, mining oil or gas or coal get the rest of the research budget. Yes, we still have a coal industry to support..but we are encouraged to buy a timber table because the carbon is locked away and stored in the timber table. WHAT??? The carbon is best stored in the bloody tree in the forest that does not grow in a straight line!!
This is what the bottom line really is - the competition of scarce resources in an ever growing world and the moral obligation of governments to provide those resources. The question is how do you do it economically, sustainably and ethically where you are talking billions of people.
Al Gore didnt like that question either.
Climate change is actually a very very good smoke screen to keep people from looking to hard at the real issues, because they are uncomfortable. Im more interested in whats going on with the insides of this oblate spheroid.
What awesome work you must have done. The closest ive come to that is setting up water purification systems in PNG - oh, and I did a study years ago involving the amount of human poop that ends up in a reef, and that reef is now Heritage listed so I must have done something..if nothing else, I did that.
Reply to this If you saved a reef. that's great! We all do what we can, but it's important that we not be misled by those who have a political agenda.
Reply to this 
