Is global warming caused by humans? What is your point of view?
I have no idea. When the experts are hedging their bets how can I be expected to say yes or no? In the IPCC5 report one of the topics was about AGW. The panel said yes, man is causing warming but they also assigned probabilities to their statements and the probability, or certainty level, for the AGW statement was Low. If even the experts don't feel comfortable giving a straight answer on this then it's a non-issue to me.
The panel said yes, man is causing warming but they also assigned probabilities to their statements and the probability, or certainty level, for the AGW statement was Low.
It appears you made a mistake here. The IPCC report says it is "extremely likely" as in greater than 95% chance.
It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together. The best estimate of the human-induced contribution to warming is similar to the observed warming over this period.
Not according the the Left Wing rag called NPR and the Left Wing rag called New Republic!
Few of you "deniers" will go there, but, http://climate.nasa.gov/interactives/
If that doesn't scare the crap out of you, you are just numb!
After years of being of the viewpoint that the recent warming trend is merely cyclical, I have pretty much switched my stance on the topic. And now feel that we HAVE at the very least been a factor in the climate change.
The evidence is simply too convincing. By doing core samples in ice floes, as well as other methods, like tree rings and geological sampling, climatologists have been able to peek pretty far back in time to see what the weather was like. Thus, we know that what we are seeing now with our weather systems in most likely unprecedented.
The weather ha just gotten to damn weird. Droughts, floods, tornadoes where and when they never have been before; crazy stuff. I realize that most things in Nature are cyclical: the water cycle; the orbit of the Earth, in fact; oxygen/carbon dioxide cycle; seasons; plant growth and germination, etc. And this idea used to be what I based my assumption that GW was cyclical on. I figured the weather and the Ice Age/Warming Trends were just another example.
But the weather has been so schizophrenic I have joined the Man-made GW camp. I DO think that some politicians have used GW to further their causes, like taxing or restricting big industries; or making money off of "Green" tech, or whatever. And yeah, AL Gore is pretty much an idiot in my book. A hypocrite and an elitist empty suit. But he HAS made some good point on the Man-made GW problem.
As a science guy, and an Astronomy buff who is all too aware of how small and insignificant man is in the grand scheme of things, I used to think there was not way little peons like us--little more than ants on this World--could affect vast and changing, and open, dynamic weather systems.
Then I recalled something our instructor told us on our first day of a Meteorology class back in college. He said that if you took an average-sized classroom world globe--say, one that's about 20" in diameter, and painted it over, one coat, with some regular house paint, that that coat of paint--it't thickness--would be, in scale to the globe, about the same thickness as our living atmosphere in comparison to the diameter of the real Earth. Which if memory serves is about 7800 miles or so.
Wow! When put like that, I can certainly see how we silly humans could hose our weather systems!