Emissions
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Emissions
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Transcript of Emissions
Emissions
Vapor trails
Vapour (UK)
Vapor
Smoke is a form of vapor
Vapor sounds nicer
But we’re really talking about smoke
Not good
Smoking is bad … not polite!
And so is this
Just like this is bad
And this is bad
Bad
Bad?
Looks nice!
Oh, cool!
Very cool!
Super cool!
No -- bad
Very very bad!
Super bad!
35 million commercial airline flights …
… every year
That’s a lot of smoke
Every day
Lots of carbon dioxide
Greenhouse gases
Greenhouse gases
Global warming
Getting warmer
Very warm
Greenhouse
Sun comes in
Lots of heat stays in
So it’s warmer than outside
Which is good -- sometimes
Greenhouse gases trap heat
Which can be very good
We need some heat
But too much has a bad effect
Too much global warming
Too much Carbon Dioxide
Airplanes fly high up!
You knew that!!
Bad place for lots of smoke
Thin air, lots of clouds
Looks clean, but it isn’t
Vapor trails – also known as contrails
Condensed vapor
Packed with bad stuff
Air is thin
Smoke is thick
A very bad place for lots of smoke
Too much of this
Soot
Like this
Vapor trails – cause 4 – 8% of global warming!
That’s a lot
Up to 8%!!
And here …
… the Arctic
Where all these cute, white animals live!
Look how cute!!
Nothing cuter than this!
Except this
Or this
Maybe 20% of warming over the Arctic
… caused by vapor trails!
You bad people in airplanes!
Get off that airplane
Walk
Or at least REDUCE soot
Soot-free vapor trails may be good
Cirrus clouds
Cirrus – these thin, wispy clouds
Cirrus clouds also cause warming
They trap heat
Other planets have cirrus clouds!
Mars, for example
Contrails are man-made cirrus clouds!
Soot-free vapor trails …
… may help COOL the earth
Maybe
Why?
Maybe PREVENT the formation of cirrus clouds …
Maybe
Who knows?
But anyway …
Reduce soot content
Definitely a good idea
Please reduce soot
How?
Tax
No one wants to pay tax
It’s a good idea
Everyone hates tax
That’s why weak politicians …
… don’t introduce taxes on airlines
They listen to rich people
Listen to people who own airlines
They don’t listen to these guys
Politicians ignore the real problems
This bear doesn’t fly first class
