What are the effects of a sudden increase in global temperature on a planet experiencing an ice age?

Question

Let's say hypothetically a planet similar to Earth was experiencing an ice age that started millenia before. To be specific, the ice age on this planet is as severe as the most recent glacial Earth period was at its peak. Now if the planet was given a telekinetic nudge towards its sun, which is also the same as ours, what would happen? Need some info on what would happen to all the flora and fauna, basically how the worldwide natural environments would be affected. This is for a work of fiction that I'm authoring.

Answer 1

This has happened a few times in Earth's history when its orbit has changed. And dozens of times between ice ages. A bit more slowly, but some effects are:

-warmer average temps. (duh)

-higher sea levels (both from melted snow and glaciers and also because warm water expands).

-Less aboreal forest (like Siberia, Alaksa). More grassland.

-More humidity, more weather (weather is created by the movement of heat and water vapor and you'll have more of both) - so hurricanes, tornados, thunderstorms, etc.

-Certain long term process will get reversed. I'm think of frozen methane hydrates in sea floor sediments and the sequestering of carbon in tundra soils. As those warm, massive amounts of CO2 and methane will be generated which will both further global warming.

-Those plants and animals that can't migrate to their preferred habitat will die or be outcompeted. A few very versatile lifeforms (rats, pigs, ants, grass, etc) will gain an advantage over species which were specialized for one climate and set of predators/prey. Later, long time later, as things stablize, new speciation will occur. Specialists will arise again in individual niches.

If it also had a moon the same as ours, total solar eclipses could no longer happen, only annular eclipses (the moon's apparent size would remain about 1/2 degree but the sun's apparent size would get bigger).

The solar influence on tides would be slightly great (the moon would still dominate, but by a smaller amount. With one of the gravitional bodies being closer, the highest and lowest tides would be more extreme.

The year would be shorter. By several days or weeks or months depending how much you move the Earth in. Example: Earth = 365.256 days versus Venus = 224.701 days.

Answer 2

Of course the ice will melt and some of the land might be gone because it will be covered by water. Some animal and plants may also die because of the sudden change in temperature.