Sentences with phrase «decreasing ozone levels»

The colour scale for increasing and decreasing ozone levels over time and associated p - values is the same as in Figure 8.

Red and orange colours indicate increasing ozone levels and blue colours indicate decreasing ozone levels over time.

Not exact matches

City of Dallas Texas Government 334 million green kWh, 40 % of total power used After hosting an eye - opening climate conference, the city government decided to help lower statewide ozone levels by decreasing its conventional power use, says Jill Jordan, an assistant city manager.

As well as human influences, Novelli points out that the eruption of Mount Pinatubo in June 1991 may be responsible for a recent decrease in stratospheric ozone levels.

And while ozone in the eastern U.S. has decreased overall, the levels can spike during heat waves.

When residents of São Paulo chose gasoline over ethanol to fuel their vehicles, levels of ozone actually decreased, according to a Northwestern study.

However, the research also showed that a sharp reduction in the emissions of certain pollutants would lead to dramatically decreased levels of ozone even as temperatures warm.

As a result of regulation by the Montreal Protocol, the levels of ozone - depleting chlorine and bromine stopped growing in the atmosphere in the mid-1990s, and have been decreasing at nearly the expected rate.

Clearly Antarctica is supposed to warm in the future as greenhouse levels increase (and ozone loss decreases), but it is unclear just how it should be behaving to date.

Chemistry - transport model studies of the impact of recent changes of ozone precursor emissions, both regionally and globally as outlined above, consistently show that the local response of ozone levels has been a decrease in North America and Europe and an increase in East Asia (Verstraeten et al., 2015; Zhang et al., 2016; Lin et al., 2017).

When ozone exposure decreased by 10 parts per billion — and was at a level well below the federal air quality standard — the workers were 5.5 percent more productive.

Shown to be safe in the body on a cellular level, ozone therapy decreases inflammation.

Because ozone rapidly decreases with height (very little ozone above 35 km), ozone loss is estimated to have caused only half of the cooling at the higher levels of the stratosphere.

52 • Immune system suppression Natural Capital Degradation Effects of Ozone Depletion Human Health • Worse sunburn • More eye cataracts • More skin cancers • Immune system suppression Food and Forests • Reduced yields for some crops • Reduced seafood supplies from reduced phytoplankton • Decreased forest productivity for UV - sensitive tree species Wildlife • Increased eye cataracts in some species • Decreased population of aquatic species sensitive to UV radiation • Reduced population of surface phytoplankton • Disrupted aquatic food webs from reduced phytoplankton Figure 20.21 Natural capital degradation: expected effects of decreased levels of ozone in the stratospOzone Depletion Human Health • Worse sunburn • More eye cataracts • More skin cancers • Immune system suppression Food and Forests • Reduced yields for some crops • Reduced seafood supplies from reduced phytoplankton • Decreased forest productivity for UV - sensitive tree species Wildlife • Increased eye cataracts in some species • Decreased population of aquatic species sensitive to UV radiation • Reduced population of surface phytoplankton • Disrupted aquatic food webs from reduced phytoplankton Figure 20.21 Natural capital degradation: expected effects of decreased levels of ozone in the straDecreased forest productivity for UV - sensitive tree species Wildlife • Increased eye cataracts in some species • Decreased population of aquatic species sensitive to UV radiation • Reduced population of surface phytoplankton • Disrupted aquatic food webs from reduced phytoplankton Figure 20.21 Natural capital degradation: expected effects of decreased levels of ozone in the straDecreased population of aquatic species sensitive to UV radiation • Reduced population of surface phytoplankton • Disrupted aquatic food webs from reduced phytoplankton Figure 20.21 Natural capital degradation: expected effects of decreased levels of ozone in the stradecreased levels of ozone in the stratospozone in the stratosphere.

While atmospheric levels of ozone - depleting chemicals were rapidly increasing before the Protocol was ratified, emissions of nearly all of these chemicals have declined substantially and atmospheric levels of most of these gases have decreased in the intervening 2 decades.

60 • Immune system suppression Natural Capital Degradation Effects of Ozone Depletion Human Health • Worse sunburn • More eye cataracts • More skin cancers • Immune system suppression Food and Forests • Reduced yields for some crops • Reduced seafood supplies from reduced phytoplankton • Decreased forest productivity for UV - sensitive tree species Wildlife • Increased eye cataracts in some species • Decreased population of aquatic species sensitive to UV radiation • Reduced population of surface phytoplankton Figure 20.21 Natural capital degradation: expected effects of decreased levels of ozone in the stratospOzone Depletion Human Health • Worse sunburn • More eye cataracts • More skin cancers • Immune system suppression Food and Forests • Reduced yields for some crops • Reduced seafood supplies from reduced phytoplankton • Decreased forest productivity for UV - sensitive tree species Wildlife • Increased eye cataracts in some species • Decreased population of aquatic species sensitive to UV radiation • Reduced population of surface phytoplankton Figure 20.21 Natural capital degradation: expected effects of decreased levels of ozone in the straDecreased forest productivity for UV - sensitive tree species Wildlife • Increased eye cataracts in some species • Decreased population of aquatic species sensitive to UV radiation • Reduced population of surface phytoplankton Figure 20.21 Natural capital degradation: expected effects of decreased levels of ozone in the straDecreased population of aquatic species sensitive to UV radiation • Reduced population of surface phytoplankton Figure 20.21 Natural capital degradation: expected effects of decreased levels of ozone in the stradecreased levels of ozone in the stratospozone in the stratosphere.

Since a large body of evidence links pollution with poor health, and health is an important part of human capital, efforts to reduce pollution could plausibly be viewed as an investment in human capital and thus a tool for promoting economic growth... We find robust evidence that ozone levels well below federal air quality standards have a significant impact on productivity: a 10 ppb decrease in ozone concentrations increases worker productivity by 4.2 percent.