Increasing amounts of ice and condensation nuclei would be need to be high for the polar stratospheric cloud to sustain itself and eventually expand.
12.
With this combination of wetter and colder conditions in the lower stratosphere, polar stratospheric clouds could have formed over wide areas in Polar Regions.
13.
In particular, as early as 1952 he associated low ozone levels in the stratosphere to the presence of polar stratospheric clouds ( PSCs ).
14.
In short, it's because the chemical reactions that break down ozone are very much more efficient if polar stratospheric clouds catalyze the reaction.
15.
The polar stratospheric clouds in Antarctica are only formed when there are very low temperatures, as low as " 80 �C, and early spring conditions.
16.
The Cl-catalyzed ozone depletion can take place in the gas phase, but it is dramatically enhanced in the presence of polar stratospheric clouds ( PSCs ).
17.
The plane will also analyze the chemistry and physics of polar stratospheric clouds in the Siberian Arctic, where no comparable measurements have ever been made, the foundation said.
18.
To test the polar stratospheric clouds effects on the Eocene climate, models were run comparing the effects of polar stratospheric clouds at the poles to an increase in atmospheric carbon dioxide.
19.
To test the polar stratospheric clouds effects on the Eocene climate, models were run comparing the effects of polar stratospheric clouds at the poles to an increase in atmospheric carbon dioxide.
20.
Due to the warming of the troposphere from the increased greenhouse effect of the polar stratospheric clouds, the stratosphere would cool and would potentially increase the amount of polar stratospheric clouds.
