出典:Wiktionary
出典:『Wiktionary』 (2010/10/22 03:28 UTC 版)
potential vorticity (複数形 potential vorticities)
出典:Wikipedia
出典:『Wikipedia』 (2010/10/01 23:07 UTC 版)
Potential vorticity (PV) is a quantity which is proportional to the dot product of vorticity and stratification that, following a parcel of air or water, can only be changed by diabatic or frictional processes. It is a useful concept for understanding the generation of vorticity in cyclogenesis (the birth and development of a cyclone), especially along the polar front, and in analyzing flow in the ocean.