That's "orange peel" (the surface looks similar to the texture of the surface of an orange)
short of wetsanding, I'm not sure there really is a way... The problem with trying to fix the clearcoat by wetsanding is there is always a chance that you will go all the way through the clearcoat. I'd suggest not to worry about it, you may want to search the site a bit on "orange peel", it may help you on your quest a bit more.