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[–] boltsand 0 points 2 points (+2|-0) ago 

Think your math is off a bit. 0.9 degrees Celsius is a little over 33 degrees Fahrenheit, if you're talking about absolute temperature (If it's 0.9C outside, it'll be about 33F). If you're talking about an increase, it's only a difference of around 1.6F.

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[–] Ragnar1234 ago 

I am glad you clarified that. I am certainly no expert on temperature conversions!

Secondly, I find it hard to believe that a difference of 1.6F is going to be the cause of an entire lake disappearing.

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[–] boltsand 0 points 2 points (+2|-0) ago 

I think it might have an influence, since they're talking about average temp rather than just it being 1.6 degrees hotter all the time.

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[–] usernameistaken ago 

While the temperature change might look small, the overall effect can be quite significant between temperature changes. Given the size of the earth and the amount of energy it takes to heat or cool, a 0.9C is a significant amount.

Think of it this way. To boil a litre of water to 100C it takes 20mins of heat. to take the water to 100.9C in the same amount of time, you need to add more heat. Now imagine heating the water on earth to that extra 0.9C, which will take a lot of heating since time remains the same. So, even though you are only seeing a 0.9C change, the amount of heat earth is being subjected to pretty massive. which in turn results in lakes drying up, rainfall shortage, fires etc...

Here is an article i found from NASA that may be helpful.

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[–] Teh_Sauce_Guy ago 

To convert absolute temperature, you just put some numbers in. But to covert temperature change, you would calculate the initial temperature in F, the final temperature in F, and subtract them from each other.