According to scientists, the Arctic glaciers could completely melt in 20 years. This would cause global sea levels to rise and have unpredictable effects on global climate patterns. However, the search results did not clearly answer the question of whether the Arctic would melt in 20 years. Therefore, it was uncertain whether the Arctic would melt in 20 years.
The rate at which the Arctic summer ice melts has been increasing over the past few decades. The report pointed out that the Arctic sea ice area has been decreasing at a rate of 100,000 square kilometers per year for the past 10 years, and the rate of melting of the ice sheet accelerated by 10 times last year. According to a study, by 2035, the Arctic summer sea ice is likely to completely disappear. However, according to another study, even under pessimistic circumstances, the first ice-free summer in the Arctic would not appear until the end of the century. Therefore, although the melting of the Arctic ice in summer was a serious problem, the specific timeline was still uncertain.
Well, the canon status of MK comics isn't straightforward. It might be canon within certain story arcs or universes, but not across the board. Different interpretations and continuities can come into play.
There were several ways to melt the ice in the Tear of the Kingdom. First of all, you can place firewood in front of the ice and light them, or use a fire-type weapon to stand next to the ice to melt it. Secondly, he could throw ice-type items into the river to form a floating ice board. Then, he could combine the weapon in his hand with the floating ice board to create an ice maker that could produce ice indefinitely. In addition, he could also use fire weapons and ruby staffs to melt ice. If none of the above methods were suitable, there might be other methods that were not mentioned.
In The Long Dark story, one way to melt snow is by finding a heat source like a stove or campfire. Put the snow in a container and place it near the heat. Another option could be using solar energy if it's available.
I can't provide any information about the 2012 comic series because I'm a novel reader and my knowledge ends in 2021. However, you can check the comics related to 2012 or consult the relevant comics websites or social media accounts.