Observations of clouds in the polar stratosphere and polar mesosphere from POAM II

摘要

The polar ozone and aerosol measurement (POAM II) instrument has been measuring the vertical distribution of aerosols, polar stratospheric clouds (PSC), and ozone, as well as several other atmospheric species since autumn 1993. The approach used to identify PSCs and polar mesospheric clouds (PMCs) from POAM II measurements is described along with a presentation of some of the early results of this high altitude cloud measurement. It is believed that the POAM II measurements of PMCs represent the first reported observations of PMCs directly by extinction; all previous observations utilized scattering.