Temperature/ambience changes for biomes

[ChogChey]

Hi, I was wondering if its possible to make changes to the temperature effect a biome produced on the player, as an example, making the arid biome hotter, or making the arctic biome very hot. As well as this, is it possible to change the ambient sounds a biome produces? 

If any of this is possible, I'm willing to pay for work done. 

And if this isn't possible, it would still be useful to know!

Thanks in advance!