Simply put thenational graphic explain global warming as the average global temperature increasing. The article states that thisaverage temperature is caused by gases that trap heat form the sun.
National geographic(2017) says: “the greenhouse effect” is the warming that happenswhen certain gases in Earth’s atmosphere trap heat. These gases let in lightbut keep heat from escaping, like the glass walls of a greenhouse.” 6How these greenhouseeffect works are that the sunlight entersthe earth’s atmosphere where some of the lightenergy radiates as heat in the atmosphere. What the greenhouse gases do is thatthey trap the heat energy from escaping earth. From the National Graphic(2017) source, I learnt that scientist knew about thisso-called greenhouse gas effect since1824, where Joseph Fourier had worked out that the earth should be a lot colderbut did not have the means or technology to know why the earth was hotter thanit should be.
Then Swedish chemist SavanteArrhenius discovered that us humans could affect the greenhouse effect byproducing more carbon dioxide. I also found out that Co2 was not the onlyGreenhouse gas. There are several moregreenhouse gases and that includes methane. 8NASA (2017) continueto say that “Methane. A hydrocarbon gas produced boththrough natural sources and human activities, including the decomposition of wastesin landfills, agriculture, and especially rice cultivation, as well as ruminantdigestion and manure management associated with domestic lives”8they committee that methane is amuch more active greenhouse gas than carbon dioxide but luckily it’s far less abundant in the earth’s atmosphere. Another main greenhousegas is aNitrous oxide that the article pointsout.
Nasa (2017) says that it is a verystrong greenhouse gas “produced by soil cultivation practices, especially theuse of commercial and organic fertilizers, fossil fuel combustion, nitric acidproduction, and biomass burning”. Nasa (2017) also points outChlorofluorocarbons (CFCs) as being another contributor to the greenhouse gaseffect. The source of these CFCs isorigins is completely human, and they are very good at destroying the ozonelayer. Which is a layer in the atmospherethat protects us humans from dangerous cosmic rays in the first place. the increased rate of these greenhousegases being released into the atmosphereis mainly man-made. The thing that causesglobal warming is human activity.
8″theIntergovernmental Panel on Climate Change, a group of 1,300 independentscientific experts from countries all over the world under the auspices of theUnited Nations, concluded there’s a more than 95 percent probability that humanactivities over the past 50 years have warmed our planet.”8The evidence thathumans cause global warming is resounding.From NASA they say that “atmosphericcarbon dioxide levels from 280 parts per million to 400 parts per million inthe last 150 years.”8 And that panel of scientist also say the “human-producedcarbon greenhouse gases… have caused much of the observed increase in Earth’stemperatures over the past 50 years”. How do we know it’s human-made. In the NASA (2017) article, they say “Theplanet’s average surface temperature has risen about 2.
0 degrees Fahrenheit(1.1 degrees Celsius) since the late 19th century, a change driven largely byincreased carbon dioxide and other human-made emissions into the atmosphere.Most of the warming occurred in the past 35 years, with 16 of the 17 warmestyears on record occurring since 2001.
Not only was 2016 the warmest year onrecord, but eight of the 12 months that make up the year — from January throughSeptember, with the exception of June — were the warmest on record for thoserespective months.”8Whyis global warming such a concern?WWF says” Burning fossil fuels, such as coal, oiland natural gas, to generate energy has the greatest impact on the atmospherethan any other single human activity.” They support this statement by stating “Globally, power generationis responsible for about 23 billion tonnes of CO2 emissions per year – inexcess of 700 tonnes every second. Coal is especially damaging to our atmosphere,releasing 70% more carbon dioxide than natural gas for every unit of energyproduced.
“15 So humans cause global warming and the biggestcause of it is our burning fossil fuels for energy so we canbetter our lives. However, the cost of bettering ourlives is much more than the electricity bill. Economically the cost of theearth getting hotter could cost the planet about $21 trillion by 2050 saysJohnston of the independent.
Anotherproblem of climate change is that “crops, natural vegetation, anddomesticated and wild animals (including seafood) that sustain people in agiven area may be unable to adapt to local or regional changes in climate.” StatesRiebeek of the earth observatory department at NASA. 8Another major concernis that Ice sheets are melting. Live Science says that “The ice sheets havebeen retreating since the end of the last Ice Age about 11,700 years ago, butthe last century’s warming has hastened their demise.”4 A 2016 study foundthat there is a 99% chance that it was global warming that was causing the accelerateddemise of the Ice Sheets. Infect thestudy found that Glaciers( rivers of ice) retreated 10 to 15 times the distanceif climate change wasn’t a thing. But what’s the big deal with melting ice? The problem is that it can cause a lot ofhuman life.
“The loss of glaciers can cause the loss of human life when icydams holding back glacier lakes destabilize and burst, or when avalanchescaused by unstable ice bury villages,”says Live Science. The problem isn’t just with ice getting hotter its hot dryplaces getting hotter and drier. 4