Stratospheric Ozone Depletion

Summary on ozone hole (Continued)
• The most important difference between the
Antarctic and the Arctic stratosphere is the
extent of denitrification that occurs.
• Because of generally warmer temperatures in
the Arctic, PSCs tend not persist until the onset
of sunlight, releasing their nitric acid back into
the vapor phase.
• As a result, ozone depletion is generally less
dramatic in the Arctic than the Antarctic.