Sentences with phrase «time ozone concentration»

Not exact matches

Normally ozone concentrations in this part of the atmosphere are three to ten times higher.

By adjusting elements of the test, such as the air exchange rate, which is the number of times per hour indoor air is replaced by outdoor air, as well as the concentrations of terpene and ozone in the chamber, the group was able to ascertain how those variables each affected the formation of secondary organic aerosols.

Sicard, P, Serra, R and Rosello, P 2016 Spatiotemporal trends in ground - level ozone concentrations and metrics in France over the time period 1999 — 2012.

But then the other thing going on is those same protons run to the closing isobars of the earth EMF away from the tropics, and there reduce ozone, and create over time a concentration of ozone over the tropics, thereby increasing the intensity of the ITCZ and increasing tropical storm probabilities, as the wind then wanes under 500.

In 1991, a new threshold was passed; ozone concentration fell below 100 DU for the first time.

Although concentrations should level off as the Montreal Protocol on Substances which Deplete the Ozone Layer is implemented, CFCs have long life - times, and their effects will be felt for many decades to come.

Due to the important role of ozone in driving temperature changes in the stratosphere as well as radiative forcing of surface climate, several different groups have provided databases characterizing the time - varying concentrations of this key gas that can be used to force global climate change simulations (particularly for those models that do not calculate ozone from photochemical principles).

At the same time, increased use of domestic natural gas has helped reduce ozone concentrations in the air by 17 percent since 2005:

Whereas CO2 concentration is quasi-steadily increasing, other drivers change their trends with time even to opposite (solar and geomagnetic activity, stratospheric ozone), or change trends with location (Earth's main magnetic field), or with latitude (geomagnetic activity), or are largely unknown but probably unstable in space and time (atmospheric winds and waves).

6 Ice age — time in the past when continental glaciers covered large parts of Earth's surface Global warming — a gradual increase in the temperature of Earth's atmosphere Greenhouse gas — Gases in the atmosphere, such as carbon dioxide, that trap solar energy Ozone hole — a large area of reduced ozone concentration in the stratosphere, found over Antarctica Chlorofluorocarbon — chlorine compounds that are the main cause of ozone depletion KEY Ozone hole — a large area of reduced ozone concentration in the stratosphere, found over Antarctica Chlorofluorocarbon — chlorine compounds that are the main cause of ozone depletion KEY ozone concentration in the stratosphere, found over Antarctica Chlorofluorocarbon — chlorine compounds that are the main cause of ozone depletion KEY ozone depletion KEY TERMS

Finally, the implications of the seasonality, timing, and spatial patterns of Antarctic temperature trends with respect to interpreting the relative roles of stratospheric ozone depletion, SSTs and increased atmospheric concentrations of greenhouse gasses are discussed.