Debate time: Global Warming

[Peter Parka]

and still not one convert :24::24::24:

Its the shit it stirs up, not the intelligence of the debate that counts. :24:

 

[Alien Allen]

Its the shit it stirs up, not the intelligence of the debate that counts. :24:

....

 

[Goat Whisperer]

You know what I think is hilarious? You guys were all IN LOVE with EngineThatCould's argument; and then when I pretty much slaughtered it, you ignored my argument.

 

[groundpounder]

at this point, no one really cares...

 

[Goat Whisperer]

You know your wrong and instead of admitting it, you just want to forget about it.

 

[Peter Parka]

opcorn2:opcorn2:opcorn2:

It's behind you! Boo!!!

opcorn2:opcorn2:opcorn2:

 

[dt3]

:sucks:

 

[Peter Parka]

:sucks:

:homo::bates::emo_love031:idhitit::gives::cliffs::blowme:

 

[wednesday]

Instead of arguing...dont you think we should be finding ways to restore earth to its wonderful state?

*sits on grass n makes daisy chains whilst puffing a large one*

 

[BadBoy@TheWheel]

You know your wrong and instead of admitting it, you just want to forget about it.

Okay....I'm wrong...will you shut up now


:unsure:


PLease

 

[Alien Allen]

Okay....I'm wrong...will you shut up now


:unsure:


PLease

:24::24::24::24::24:

 

[ConTRo13R]

Ian Sample reports on the extraordinary information being sent back from Mars | Science | The Guardian

further more proof for you AbriannaPeto that mars is more like the earth than you care to believe

 

[BadBoy@TheWheel]

Global Warming effects won't change for next thousand years?

Global warming 'irreversible' for next 1000 years: study - Yahoo! News

 

[Goat Whisperer]

Ian Sample reports on the extraordinary information being sent back from Mars | Science | The Guardian

further more proof for you AbriannaPeto that mars is more like the earth than you care to believe

I don't feel like trying to explain this to you anymore. Here is a quote from somewhere to finish this up.

The primary empirical evidence for long term, global warming on Mars comes from Fenton 2007. Fenton compared a composite snapshot of Mars from 1977 taken by the Voyager spacecraft to a 1999 image compiled by the Mars Global Surveyor (referencing work from Geissler 2005). The 1977 snapshot showed a brighter planet. In 1999, the planet had a lower albedo, with prominent darker regions in the southern mid and high latitudes. Using the albedo changes in a general circulation model, Fenton calculated a 22 year global warming trend of 0.65°C.

Figure 1: Snapshots of Mars 1977 (top) and 1999 (bottom). Image courtesy of Geissler 2005.
Fenton attributed the warming to surface dust causing a change in the planet's albedo. Martian dust plays a major role in the planet's climate (Kahn 1992). Solar variations are not the main driver of Martian climate. Nevertheless, an important question remains: is the interpretation of long term global warming on Mars correct?
A broader view of Martian climate change

To put these results in proper perspective, an understanding of what drives Martian climate is required. Global dust storms increase the surface albedo by settling brighter dust on dark surfaces. Within a year after a dust storm, various wind systems remove the dust and Mars returns to a normal, lower albedo.
The 1977 snapshot was taken after a global dust storm had deposited dust over the southern latitudes, lightening the planet surface. Before the storm, the planet had albedo comparable to recent measurements (Szwast 2006).
Fenton drew conclusions about long term climate by comparing two end points. This led to the classic error of mistaking weather for climate (similar to the recent global cooling argument). When you look at the broader data, there is no discernable long term trend in albedo:

Figure 2: Comparison of data sampling by Fenton 2007 (left, comparing 2 end points) and the full sample of data (courtesy Mark Richardson).
The apparent long-term warming between the 1970's and 1990's is largely a consequence of the timing of the two snapshots used. The "brighter" 1977 snapshot was immediately after a global dust storm when the planet was temporarily lighter. The "darker" 1999 snapshot was of the planet in it's usual state. There is little evidence that Mars is undergoing decadal-scale, long term global warming. In fact, following the 2001 global dust storm, the southern hemisphere was brighter than in 1977 (Szwast 2006).
Conclusion

The empirical evidence isn't conclusive on whether global warming is happening on Mars. However, to answer the question on whether the sun is causing Earth's global warming, there is plentiful data on solar activity and Earth's climate. Many papers have examined this data, concluding the correlation between sun and climate ended in the 70's when the modern global warming trend began.
So the argument that Martian warming disproves anthropogenic global warming fails on two points - there is little empirical evidence that Mars is warming and Mars' climate is primarily driven by dust and albedo, not solar variations.

 

[SgtSpike]

I don't feel like trying to explain this to you anymore. Here is a quote from somewhere to finish this up.

That's the biggest load of non-conformity to logic I've ever seen. But nice try.

 

[Goat Whisperer]

Look, if you guys aren't going to read or respond to my arguments, I'm not going to take the time to make them. So there is your quote from another site to disprove your claim. Happy? Because either way you woudn't admit that you were wrong.

 

[Maulds]

Its the shit it stirs up, not the intelligence of the debate that counts. :24:

I got your global warming right here

 

[Maulds]

OK I am politely asking questions here, don't bite my head off.

Why is CO2 blamed for the heating?

 

[wednesday]

*cowers behind Maulds n whispers in his ear* "r u mad, dont wake the beast":24::24::24:
I keed i keed , dont keel me xxx:surrender

 

[Maulds]

I'm just trying to get educated, thats all.