Filed under: Politics, thought of the moment | Tags: climate change, environment, global warming, nuclear, radiation
The other day, President Obama’s Climate Guru, Dr. Stephen Chu, said that in order to reduce the effects of Global Warming we should all paint our roofs white.
Now, he’s supposed to be a really smart man. In fact, he’s won a Nobel prize. (Much like former-Vice President Al Gore, who’s used his celebrity to great effect.)
While painting your roof white would quite possibly have the effect of somewhat reducing your cooling bill, if Global Warming is real, and it’s caused by heat being trapped by greenhouse gases, then bouncing more heat into the greenhouse gases isn’t going to slow, much less reverse Global Warming.
This suggestion, however, reminded me of a suggestion from years ago. It too was a suggestion to use white paint as a defensive measure. Maybe you don’t remember it, but back in the days of the Cold War, it was suggested that we should all paint our windows white as part of civil defense. Yes, it was suggested by the smart people in government that we might be able to survive a nuclear blast if we just used regular white paint. ( See this link to a 12-minute video.)
White paint will help save buildings, but it won’t do much for you if that’s all that is between you and the radiation. A much more effective “solution” is to fix the problem at the source… if that’s possible.
Now, given that I wasn’t even born at the time, why would I know about this, much less have it jump to mind?
It was a simple little song by Malcolm And The Mirrors (Malcolm was formerly recording with Alwyn Wall) from the 1982 album “Red Alert” that locked it in my mind. I couldn’t find a direct link to the recorded music, but here are the lyrics:
Paint Your Windows White – by Malcolm Wild
Verse:
I am the man, I am your government
I can show you how and where your money went
Put a coat over your head and forget about the rent
Verse:
When the bombs begin to fall in the middle of the night
When you start to lose it all, and your heart faints in fright
Put a coat over your head, and paint your windows white
Chorus:
“Paint your windows white,” they say, “It’ll make it all go away
You don’t have to understand, just bury your head in the sand”
Verse:
This is your school; I am your teacher too
Hear my rules and I’ll tell you what to do
Put a coat over your head, and believe that it’s all true
Repeat Chorus
Verse:
Men are fools; they make their rules
They think they’re wise in their own eyes
Men are blind; they’ve lost their mind
All because they discard God
Instrumental break
Verse:
I am a man of books, I know the human race
It’s not how it looks; I say that we all came from apes
Put a coat over your head and hide your monkey face
Repeat Chorus:
Repeat
Men are fools
They make their rules
They think they’re wise
In their own eyes
Men are blind
They’ve lost their mind
All because they discard God
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I too was surprised by Dr. Chu’s statement, not very smart to say the least. But, one should analyze the “intent” and state it with greater clarity – the facts!
Painting your roof with a reflective material in hot climatic areas will have a direct effect on air-conditioning use and save energy no doubt.
Roads and pavements will not solve the problem. White paint is not necessarily a reflector – it is dependent on the material used in the paint, not the colour.
Comment by shazoom June 3, 2009 @ 8:07 amshazoom – undoubtedly, it would help – at least to a limited degree – reduce air-conditioning use. However, the main emphasis seems to be to reflect the heat back into space.
Did you see this bullet point in the article’s summary?
* Scientists estimate that making roofs and pavements white or more light-coloured would counter global warming with “negative radiative forcing” – reflecting sunlight back into space. They said that retrofitting urban roofs and pavements in tropical and temperate regions with solar-reflective materials would offset about 44 billion tonnes of carbon dioxide.
Comment by realizingharmony June 3, 2009 @ 8:16 amThe only way to reflect heat (I.R. & visible light) without major change in wave length thus making it possible to go back out of the atmosphere is to use something like highly polished metals or ice – clouds and air-borne dust particle will have a small negative effect sending it back down. This solution would be cost prohibitive.
The bulleted paragraph does not clearly account for basic physics as follows:
[1] “Light colored” is absolutely meaningless. If paint, the small amount (very small) of “reflectivity” would only scatter the incoming heat source.
[2} There is a very big difference between paint and “solar reflective materials”
For ease of reading, radiative wavelengths will not pass out of the atmosphere, thus the green-house effect.
All the best
Comment by shazoom June 3, 2009 @ 11:54 amhttp://flipsidemn.blogspot.com/2008/08/malcolm-and-mirrors-red-alert.html
Comment by kyteman4 July 11, 2009 @ 11:18 am