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Science and the Environment Bulletin: Climate Change Increasing Ozone Loss in the Arctic Stratosphere
In six out of the last nine years, unusually low ozone values have been observed over the Arctic during the spring with ozone losses of up ...
www.ec.gc.ca

13. Develop and serve databases
Arctic in March has gone down dramatically in the five year period 1992 to 1997. While the highest ozone values in 1992 were found in ... more powerful than in March 1992. This provides us with some explanation for the low ozone values in March 1997 compared with the same month five years previously. More information: NADIR (NILU ...
nilu.no

Reports to the Nation on Our Changing Planet: Our Ozone Shield
British researchers reported finding dramatic declines in ozone values over Antarctica each spring -- actually "holes" in the ozone layer. Atmospheric scientists didn't know how to explain ... over to more "ozone-friendly" chemicals. Our Ozone Layer: Present and Future But many pieces of the ozone puzzle remain missing, and scientists wonder whether new ozone problems will develop ...
www.ogp.noaa.gov

Ozone Depletion | Ozone Layer | Stratospheric Ozone
Earth varies naturally with latitude, season, and from day-to-day. Under normal circumstances highest ozone values are found over the Canadian Arctic and Siberia, whilst the lowest values are found around the equator. The ozone layer over Canada is normally thicker ...
www.ozone-hole.org.uk

Climate Prediction Center - Stratosphere: Winter Bulletins
Middle latitude total ozone values in the years since 1993 have not continued to decline as they had declined from 1979 to 1993. However, ozone values have also not recovered to the higher values of the 1980s. The Scientific Assessment of Ozone: 1998 (WMO, 1999) reported that total column ozone decreased at ...
www.cpc.ncep.noaa.gov

remote sensing
Dobson Units on the Y-axis. If necessary, interpolate the values for ozone concentrations. After completing the four graphs, you should be able to evaluate the 15-year ozone ... , plot the concentration values of the ozone, chlorine nitrate, and nitric acid throughout the course of the year. Scale the values so that increments will appear somewhat equal. For ozone, use 0. ...
www.cotf.edu

ESB: Spray Foam Producers Solve Ozone Problem
Spray Foam Producers Solve Ozone Problem Spray Foam Producers Solve Ozone Problem Manufacturers of rigid foam insulation board have successfully phased out the ozone-destroying chlorofluorocarbons (CFCs) once used as blowing ... least one Vermont-based contractor ran the numbers and found he could get the R-values he wanted for less money with fiberglass. He recommends the foam for retrofits, but ...
oikos.com

Global Warming Potentials of ODS Substitutes | Ozone Layer Depletion | US EPA
Table 1-6 of the Scientific Assessment of Ozone Depletion, 2002. The second and third values in each of these columns are from the Intergovernmental Panel on Climate ... to the ASHRAE Standard 34 scheme. None of the chemicals listed below depletes the ozone layer. GWP values for ozone-depleting substances are available in another table. HFCs and PFCs Chemical Atmospheric Lifetime ...
epa.gov

The Nonsense That is Ozone-Depletion
UV acting on ... the UV radiation and disperses it. As the air contains ozone, so the ozone also combines with the UV. In the same way, if ... chemical scenarios..The appearance of the South Polar total ozone minimum (the Hole) and higher values at mid-latitudes in the spring has been ...
ourcivilisation.com

Air Quality Alert Program | Ground-level Ozone | New England | US EPA
How are Air Quality ... Nonattainment Areas in New England Historical Exceedances of the Ground-level Ozone Standards Sources Contributing to Ozone Formation Ozone Control Strategies Air Quality Planning Unit Contacts EPA Home Privacy ...
epa.gov