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http://news.independent.co.uk/world/environment/story.jsp?story=421166
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Originally posted by russ_watters
the chicken littles are wrong. No, the sky is NOT falling.
Originally posted by FZ+
Sun getting warmer? Well.. do you have any evidence for that? Eg. satellite data etc?
Originally posted by FZ+
Sun getting warmer? Well.. do you have any evidence for that? Eg. satellite data etc?
I think you may be referring to sunspots, which are the dark spots found on the surface of the sun. The sunspots look dark because they are cooler than the photosphere, the sun's visible surface.I don't remember what the black point meant.
Originally posted by KL Kam
I found something
http://news.bbc.co.uk/1/hi/sci/tech/1045327.stm
I think there may be a more update version out there because I've read a similar article not very long time ago.
I think you may be referring to sunspots, which are the dark spots found on the surface of the sun. The sunspots look dark because they are cooler than the photosphere, the sun's visible surface.
Originally posted by FZ+
Sun getting warmer? Well.. do you have any evidence for that? Eg. satellite data etc?
Originally posted by Mr. Robin Parsons
As far as I recall the Solar Sun Spot cycle is an eleven years ( 11yrs or 22yrs ) occurance with the event history exemplifieing the Solar radiant occilations which are said to have a five year lag time in being reproduced/effected (As thay are not wholly reproduced) upon the Earth.
But I suspect that what I stated above concerning the sheer volume of thermal generators (ANYTHING that produces heat) that are presently being employed, planetarily, has a consequence that hasn't yet been factored in completely, and it is both, important, and causitive of shorter term flucuations, (increases/decreases) as partially seen/evidenced in/by the "raining on the weekend" cycles of "urbanizartions" vis a vis traffic cycles.
I'd be interested in them too.Originally posted by Ivan Seeking
Has anyone done calculatons to show that this could be significant?
Originally posted by russ_watters
I'd be interested in them too.
Another complication is that there appears to be more than one solar activity cycle - maybe two others of longer periods. One would be on the order of 75 years (there were some major droughts in the 1920s and 1980s), the other hundreds of years.
Originally posted by Ivan Seeking
Has anyone done calculatons to show that this could be significant?
BAM! All of that on one page. 400x10^18 J/yr total world energy usage. Strange units. A joule is one watt-second, so converted to the more typical megawatt-hours, that's 1.44x10^18 MWh. Better yet, a rate of 1.64x10^14 MW.Originally posted by Mr. Robin Parsons
Probably what is needed is a reference to the actual/real heating from Solar radiance, then a calculation (rough) of how much heat all that oil, that is burned daily, releases, just to see if it is ball park/"near enough" as to see that there is, or isn't, a possibility worth persuing.
Anyone got the time, and resources?
Originally posted by russ_watters
BAM! All of that on one page. 400x10^18 J/yr total world energy usage. Strange units. A joule is one watt-second, so converted to the more typical megawatt-hours, that's 1.44x10^18 MWh. Better yet, a rate of 1.64x10^14 MW.
Thats 0.2% of the solar energy that hits the surface and even less when compared with what hits the outer atmosphere.
This is the only site I looked at, so if its wrong, not my fault.
Originally posted by Ivan Seeking
(SNIP)Also, 0.2% is very significant! A 1% - 2% reduction in solar radiation is argued to be enough to stop global warming.(SNoP)
Originally posted by Mr. Robin Parsons
Perhaps the best route would be to calculate the amount of sunlight striking the Earth's surface, convert that number into heat, and run from there.
The Atmosphere is opulescent (SP?) so the passage of light through it might not heat it as much as might be thought. The cloud cover that will absorb the heating will transfer the heat into the water because of the rain cycles, so "total Solar heating effect" is probably a close function/reflection of actual surface light heating.
After that it is simply a function of finding out how much total energy/heat we are collectively generating, daily!