Global warming 5 paragraphs essay

The term global warming was first used in its modern sense on 8 August 1975 in a science paper by Wally Broecker in the journal Science called "Are we on the brink of a pronounced global warming?". Broecker's choice of words was new and represented a significant recognition that the climate was warming; previously the phrasing used by scientists was "inadvertent climate modification," because while it was recognized humans could change the climate, no one was sure which direction it was going. The National Academy of Sciences first used global warming in a 1979 paper called the Charney Report, it said: "if carbon dioxide continues to increase, we find no reason to doubt that climate changes will result and no reason to believe that these changes will be negligible." The report made a distinction between referring to surface temperature changes as global warming, while referring to other changes caused by increased CO 2 as climate change.

From the perspective of developing countries, it may appear that the rich countries are attempting to minimize the changes they have to make, even though they are the primary cause of climate change, and then getting the developing countries to make a larger set of changes than they otherwise would have had to. After all, the world has known for over two decades (even three) that changes are needed, and instead, most of the rich world has only managed to slow down its rate of emission increase, not actually reduce them. These perspectives are rarely mentioned in western mainstream media, whereas the concerns of population growth, China and India’s rise, are.

This outlook has allowed, at least for some, for the  preservation of a form of climate optimism  in which big changes, someday soon, will still make the difference. Christiana Figureres, the former head of the United Nations’ Framework Convention on Climate Change, recently joined with a group of climate scientists and policy wonks to state there are three years left to get emissions moving sharply downward. If, that is, we’re holding out hope of limiting the warming of the globe to below 2 degrees Celsius ( degrees Fahrenheit) above pre-industrial temperatures, often cited as the threshold where “dangerous” warming begins (although in truth, that’s a matter of interpretation).

In May 2013, it was reported that readings for CO 2 taken at the world's primary benchmark site in Mauna Loa surpassed 400 ppm . According to professor Brian Hoskins , this is likely the first time CO 2 levels have been this high for about million years. [74] [75] Monthly global CO 2 concentrations exceeded 400 ppm in March 2015, probably for the first time in several million years. [76] On 12 November 2015, NASA scientists reported that human-made carbon dioxide continues to increase above levels not seen in hundreds of thousands of years; currently, about half of the carbon dioxide released from the burning of fossil fuels is not absorbed by vegetation and the oceans and remains in the atmosphere. [77]

Global warming 5 paragraphs essay

global warming 5 paragraphs essay

In May 2013, it was reported that readings for CO 2 taken at the world's primary benchmark site in Mauna Loa surpassed 400 ppm . According to professor Brian Hoskins , this is likely the first time CO 2 levels have been this high for about million years. [74] [75] Monthly global CO 2 concentrations exceeded 400 ppm in March 2015, probably for the first time in several million years. [76] On 12 November 2015, NASA scientists reported that human-made carbon dioxide continues to increase above levels not seen in hundreds of thousands of years; currently, about half of the carbon dioxide released from the burning of fossil fuels is not absorbed by vegetation and the oceans and remains in the atmosphere. [77]

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