Sentences with phrase «polar stratosphere»
The phrase "polar stratosphere" refers to the layer of Earth's atmosphere that is found high above the poles. It is where the ozone layer is located, which shields us from harmful ultraviolet rays from the sun. Full definition
«It is worth investigating if the mechanisms identified in the laboratory carry over to the polar stratosphere,» he says.
newscientist.com
Such sulfuric acid aerosols are already responsible for the bulk of nacreous clouds that form in the polar stratosphere; added particles would just amp up the natural process (although it might also amp up damage the ozone layer).
Investigating the polar stratosphere under the impact of climate change is the goal of the measurement campaign «The Polar Stratosphere in a Changing Climate» (POLSTRACC), carried out with the German research aircraft HALO.
Professor Baldwin added: «Natural large pressure fluctuations in the polar stratosphere tend to last a long time — at least a month, and we see this reflected as surface pressure changes that look very much like the North Atlantic Oscillation — which has significant effects on weather and extreme events across Europe.»
On the basis of its intended flight route, the Perlan glider might be able to provide the first direct observations of polar stratospheric clouds, a unique type of ice cloud that forms in the polar stratosphere and helps to deplete ozone, Gong adds.
As things stand, scientists expect the first signs of recovery of springtime ozone depletion in the polar stratosphere around the year 2065.
Sudden Stratospheric Warming (SSW)- when temperatures rise dramatically in the polar stratosphere in a mater of days.
When the vertical energy is absorbed in the polar stratosphere it leads to warming of the polar stratosphere or a weakening of the polar vortex.
Water clouds befuddle aerosol - monitoring satellites below about 9 miles above Earth's surface, so any aerosols in low, polar stratosphere were potentially missing, Ridley said.
A more frequent positive phase is associated with a more active Sun due to cooling of the polar stratosphere (less mesospheric ozone descending through the polar vortex) and consequent lifting of the polar tropopause.
A more frequent or more pronounced negative phase (as observed to a record extent during the very low solar minimum between cycles 23 and 24) is associated with a less active Sun due to warming of the polar stratosphere (more mesospheric ozone descending through the polar vortex).
The outpouring of charged particles from the are know to affect the polar stratosphere, causing some warming, and this impacts on the disposition of the polar vortex.