I would say, as you should know with a BSc in physics, is that almost all real systems are affected by a great many inputs. Your body’s temperature is thought to be relatively constant, however, if you’ve just eaten a meal, if you have an infection, if you are stanidintg the sun, if you check it in the morning as you awaken, just after you’ve exercised, when you go to bed at night, you’ll see that it varies significantly. When Krakatoa erupted in the 19th century, the earth’s temperature dropped significantly for a few years, no matter whether or not there were sunspots. Now that we’ve introduced large amounts of fluorocarbons (not ever naturally produced) into the atmosphere, the amount of ultraviolet radiation reaching the surface of the earth has increased (again, nothing to do with sunspots). This last has already tended to kill algae at the ocean’s surface down about one or two centimeters. That means that this major source of carbon dioxide absorption isn’t quite as efficient as it used to be. And more freons are still being added to the atmosphere.
So, sure, I can accept that sunspots are one of the myriad factors that affect earth temperature, but one cannot ignore all the others. The problem isn’t that a huge amount of the meteorilogical environment is part of a natural system. That’s not going to change, but if humans add a small new factor, it can cause the whole system to shift significantly.
Consider that for millions of years organic material sank to the bottom of the oceans, got covered over and compressed, and slowly turned to oil and coal. In the last two hundred years we have unearthed an unbelievable amount of those, burned them and dumped the CO2 into the atmosphere. At the same time, we’ve been chopping down forests to build cities and farms, so we have been reducing the earth’s ability to convert the CO2 back into organics.
as a BSc in physics i know that our bodies are not closed nor isolated systems but thanks for reminding me of Thermodynamics ,however i’ve read about the Krakatoa volcano and it’s true that the average global temperature dropped by 1.2 C and didn’t return to normal until 1888, In addition I can accept that we have been releasing huge amounts of CO2 ( a greenhouse gas ) into the atmosphere but how can someone be sure that the sunspots isn’t the main driving force behind climate change and not CO2 , that’s to say the CO2 is just a secondary and less influential cause
Excuse me, that’s a silly argument. And no, I didn’t miss that link. It’s completely irrelevant. There are scientists who deny that the speed of light is a constant. There are scientists who deny evolution.
Given any established scientific fact, there will be some fringe scientist who denies it. If you look to fringe scientists to tell you what to believe, you are a crank. And in this case you are looking generally to people being paid by oil companies.
And BTW, no scientists are paid to ‘say global warming is true’. There’s no money in that. There are no huge companies paying out tens of millions of dollars a year to corrupt scientists into asserting falsehoods about global warming. The UN certainly doesn’t.
maybe the fringe scientists are denying it based on scientific data ,in almost all the scientific issues we are facing we have two sides and each side claims it has the scientific proof to support their claim , but having read this article makes me believe you more .
however it’s true that there are a lot of money being put in the global warming basket
So… did you wander over to this forum to inform us that AGW is a hoax??
No I wandered to this forum to read your pointless and utterly stupid(no offense) post ,which i just did
This has been my favorite scary climate change video for some time.
I watched that swindle show a long time ago. I am not in the mood to watch it again to point out obvious flaws in their so called reasoning. But you can forget about PROOF on the global warming issue. There is no PROOF about this as in mathematics. This is about probabilities involving billions of people and ONE PLANET and there is no spare planet.
That is the REAL PROBLEM right there. This is something that we cannot afford to get wrong. But it is obvious that there are too many STUPID people for it to possibly be gotten right.
that was an amazing documentary , i never knew about this “Global Dimming” thing