> once those ice caps are almost gone, the temperature increase will be unrestrained
No, it won't. Even after all the ice is melted, the heat capacity of the Earth's oceans is huge. Plus your "heat lamp" analogy is a very poor one, the changes in radiative forcing at the top of the Earth's atmosphere are tiny compared to the total heat coming in from the Sun.
No, it won't. Even after all the ice is melted, the heat capacity of the Earth's oceans is huge. Plus your "heat lamp" analogy is a very poor one, the changes in radiative forcing at the top of the Earth's atmosphere are tiny compared to the total heat coming in from the Sun.