Hurricane question

Why do they specify 'Atlantic hurricane'? Are other hurricanes/cyclones measured differently? Would the pressure not be comparable?Some asides:Yes, I'm a weather nut. I am just fascinated with the weather. I always have been. Yes, I actually watch The Weather Channel for fun!Despite the implications of these massive storms -- the death and distruction that they can wreak -- from a scientific standpoint, is there anything more amazing? NASA ususally posts amazing photographs of these monster storms. They have . Here is the link to the , because they update the Space Station page regularly. And here is . And if you get into this stuff, be sure to check out that NASA pulled together.Another aside: A CJD-fav, about hurricane pressure today and has some interesting links for more information about hurricanes.Yet another aside: Here is an interesting that warns there isn't too much history to these measurements.