Looking at climate change facts and denials

In recent times with Trump at the helm, there has been Climate change denial. We see dismissal, unwarranted doubt and contrarian views that strongly depart from the scientific opinion on climate change, including the extent to which it is caused by humans, its impacts on nature and human society, or the potential of adaptation to global warming by human actions. Also the Public opinion on climate change is significantly impacted by media coverage of climate change, and the effects of climate change denial campaigns…
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The US federal government is moving swiftly to implement President Trump’s executive order on climate change, taking steps that include lifting a moratorium on new coal mines and asking courts to suspend long-running legal disputes over power plant climate rules.

However I feel as an ardent green energy enthusiast can’t help but notice… that we don’t know how long we have before climate change goes from dangerous to extremely dangerous, but we know that continuing with business as usual makes such a shift increasingly likely. The climate is remarkably sensitive to quite small changes in the atmosphere and oceans, and rather than gradually warming or cooling, it has tended to lurch from one state to another, in years or decades rather than millennia. As one prominent scientist puts it, Earth’s climate is an ornery beast that violently overreacts even to small nudges.

That’s particularly relevant today, when greenhouse gas concentrations are not only high, but are rising more quickly than ever before. That puts unprecedented stress on the climate system, greatly increasing the possibility of runaway climate change, of a relatively quick shift into a completely different climate regime. That could mean, for example, that what we experience today as extreme but rare heat waves could become common occurrences.

That adds urgency to the crisis. We don’t know how long we have before climate change goes from dangerous to extremely dangerous, but we know that continuing with business as usual makes such a shift increasingly likely. What we do in this century, and probably in the next few decades, will determine the kind of world our grandchildren will inherit.

Climate Central just completed a novel analysis of worldwide exposure to sea level rise and coastal flooding. We found that 147 to 216 million people live on land that will be below sea level or regular flood levels by the end of the century, assuming emissions of heat-trapping gases continue on their current trend. By far the largest group — 41 to 63 million — lives in China. The ranges depend on the ultimate sensitivity of sea level to warming. But even these figures may be two to three times too low, meaning as many as 650 million people may be threatened.

There is a heated debate is going on about whether or not climate change is real or not … but I feel it is now time to act …and try to solve the present problems to avoid future calamity.

SANJITH S. SHETTY

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