Myths vs. Facts on Global Warming

This article might upset few people or maybe we might learn a thing or too. Before I go on about the Myths or facts bout global warming, I would like to make my stand clear. According to me Global Warming is indeed a real thing happening caused by us. More population, more consumption, more production and more pollution in turn. However, I can’t ignore some of the pointers I read on the internet. Even though some of them are explained by a simple logic ( not saying that logic holds any truth) or some of the facts are backed up by some scientific research ( I have not read those scientific papers either) but here I would like to mention few and rest you can find on the link given below.

Myth 1: Earth’s climate was changing even before industrialization, so humans can’t be responsible for today’s global warming.

Science: Climate changes in the past suggest that our climate reacts to energy input and output, such that if the planet accumulates more heat than it gives off global temperatures will rise. It’s the driver of this heat imbalance that differs.

Currently, CO2 is imposing an energy imbalance due to the enhanced greenhouse effect. Past climate change actually provides evidence for our climate’s sensitivity to CO2.

Myth 2 : Global warming has stopped and the Earth has begun to cool.

Science: The last decade, 2000-2009, was the hottest on record, according to Skeptical Science. Big blizzards and abnormally chilly weather often raise the question: How can global warming be occurring when it’s snowing outside? Global warming is compatible with chilled weather. “For climate change, it is the long-term trends that are important; measured over decades or more, and those long term trends show that the globe is still, unfortunately, warming,” according to Skeptical Science.

Myth 3: Rick Santorum, GOP presidential nominee, summed up this argument in the news when he said: “The dangers of carbon dioxide? Tell that to a plant, how dangerous carbon dioxide is,” he told the Associated Press.

Science: While it is true that plants photosynthesize, and therefore take up carbon dioxide as a way of forming energy with the help of the sun and water, this gas is both a direct pollutant (think acidification of oceans) and more importantly is linked to the greenhouse effect. When heat energy gets released from Earth’s surface, some of that radiation is trapped by greenhouse gases like CO2; the effect is what makes our planet comfy temperature-wise, but too much and you get global warming.

Myth 4: Ice covering much of Antarctica is expanding, contrary to the belief that the ice cap is melting due to global warming.

Science: The argument that ice is expanding on Antarctica omit the fact that there’s a difference between land ice and sea ice, climate scientists say. “If you are talking about the Antarctic ice sheet, we expect some gain in accumulation in the interior due to warmer, more moisture-laden air, but increased calving/ice loss at the periphery, primarily due to warming southern oceans,” climate scientist Michael Mann, of Pennsylvania State University, told LiveScience. The net change in ice mass is the difference between this accumulation and peripheral loss. “Models traditionally have projected that this difference doesn’t become negative (i.e. net loss of Antarctic ice sheet mass) for several decades,” Mann said, adding that detailed gravimetric measurements, which looks at changes in Earth’s gravity over spots to estimate, among other things, ice mass. These measurements, Mann said, suggest the Antarctic ice sheet is already losing mass and contributing to sea level rise.

Now for sea ice, this type of ice is influenced by year-to-year changes in wind directions and changes in ocean currents. For sea ice, it’s tricky to identify a clear trend, Mann said.

Source: Energy, OSS foundation, Live Science

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