Give two examples to shoe the changes that have taken place last decades answer
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Most scientific reports on climate look at changes that have occurred since the pre-industrial era, or since record-keeping began. But even looking back at the past decade, it’s clear that our world today is very different from the world of 2010. Analyzing data on greenhouse gas (GHGs) concentrations, temperature rise, sea level rise and more reveal troubling trends.
But first, the good news:
There were some important bright spots for climate over the past 10 years. At the start of the decade, projections by the International Energy Agency (IEA) suggested that world’s emissions trajectory put it on course for a catastrophic 6˚C of warming by the end of the century, significantly higher than the 1.5-2 degrees C (2.7-3.6 degrees F) scientists recommend staying under to avoid the worst climate impacts. This year’s IEA report projects warming of 2.9-3.4˚C with current policies, a testament to the very different emissions trajectory the world forged this past decade.
The growth of renewables also far exceeded expectations. The price of solar PV dropped 81% since 2009. By 2017, the majority of new power-generating capacity added worldwide came from renewables.
And the recent groundswell of citizen action is unprecedented, with millions around the world taking to the streets, engaging in climate action and demanding greater action from decision-makers.
While these examples and others show remarkable progress, overall our climate system is making it clear that we are not acting quickly enough. Here are several notable trends we can see just over the past decade:
1) Carbon Dioxide Emissions from Fossil Fuels Grew 10%