Sentences with phrase «ozone amounts»

These observations allow us to provide a continuous long - term record to track the long - term and year - to - year evolution of ozone amounts.

Images from the latter can show how ozone amounts differ from season - to - season and how clouds are formed over volcanoes on the planet.

While recent trends in stratospheric ozone have been driven largely by increases in halogen abundance resulting from chlorofluorocarbon (CFC) emissions, climate change will play an increasing role in governing ozone amounts in the future, and ozone changes will feed back on climate as ozone is itself a greenhouse gas.

The cause appears not to be raw solar power output (TSI) which varies too little but instead, the precise mix of particles and wavelengths from the sun which varies more greatly and affects ozone amounts above the tropopause.

Smaller decreases in stratospheric ozone amounts also have been observed over this same period in most other regions of the stratosphere.

To enable predictions of future ozone amounts, and to identify whether (and what) action might be needed to prevent further decreases, it is extremely important to understand what is causing the observed downward trend.»

Ozone amounts change with the seasons on the planet, as its presence relies on water vapor, which destroys ozone.

Partial column ozone amounts in this layer declined from an average of 125 Dobson Units in July / August 2006 to 1.5 DU on October 6..

Current research combines the climate and chemistry changes in the GISS model to predict future stratospheric ozone amounts both over the polar regions and at lower latitudes.

1) Solar activity increases, reducing ozone amounts above the tropopause especially above the poles.

In mid-March 2011 MLS measured very low ozone amounts (purple and grey colors over the north polar region) at an altitude of approximately 12 miles (20 kilometers).

Variations in temperatures, ozone amounts, and the altitude at which the atmosphere has a given pressure have been correlated with the solar cycle.

«Changes in solar ultraviolet spectral irradiance directly modify the production rate of ozone in the upper stratosphere (e.g. Brasseur, 1993), and hence it is reasonable to expect a solar cycle variation in ozone amount.