Probably raising the notebook with some kind of feet may mitigate the problem
Interestingly, it might end up making it worse. At least that's the experience with my Thinkpad; it was running a tad hot one day so I propped the back up a little, thinking that allowing air underneath would aid the cooling. It didn't, and the CPU temp kept on slowly climbing, stabilising at something ridiculous like 80*C at idle. (The fan was running.) Disenchanted, I put it back on the table after a while, only to see temperatures plummet 25*C in a couple of minutes. Apparently, air was just trapped below the laptop, and did not significantly mingle with the air just beside, while the hard surface of a table draws the heat away from the laptop's casing. I was rather surprised at this myself, though I suppose it could depend on how fast the CPU fan is running.