Sentences with phrase «emissions over the past quarter»

The chart below compares the path of each country's carbon emissions over the past quarter century.

Not exact matches

An influx of pollution from Asia in the western United States and more frequent heat waves in the eastern U.S. are responsible for the persistence of smog in these regions over the past quarter century despite laws curtailing the emission of smog - forming chemicals from tailpipes and factories.

Over the past quarter century, G20 carbon dioxide emissions had risen by almost 50 percent while per capita emissions had gained by about 18 percent, reflecting population growth, it said.

In the New Policies Scenario, cumulative CO2 emissions over the next 25 years amount to three - quarters of the total from the past 110 years, leading to a long - term average temperature rise of 3.5 °C.

So, what's behind the changes in emissions these three countries have seen over the past quarter century?

You may wonder why the government finds the need to pursue such action since 1) U.S. carbon dioxide emissions have already topped out and have generally been on the decline for the past 7 - 8 years or so (from technological advances in natural gas extraction and a slow economy more so than from already - enacted government regulations and subsidies); 2) greenhouse gases from the rest of the world (primarily driven by China) have been sky - rocketing over the same period, which lessens any impacts that our emissions reduction have); and 3) even in their totality, U.S. carbon dioxide emissions have a negligible influence on local / regional / global climate change (even a immediate and permanent cessation of all our carbon dioxide emissions would likely result in a mitigation of global temperature rise of less than one - quarter of a degree C by the end of the century).