Keeling curve

The Keeling curve graph shows the concentration of carbon dioxide in the atmosphere in Spain. Carbon dioxide  The Keeling curve is is a graph which plots the ongoing change in concentration of carbon dioxide in Earth’s atmosphere since 1958 and it was named after Dr. Charles Keeling. The twisting shows the seasonal change in carbon dioxide concentrations from year to year. It is obviously shown that the growing rate of carbon dioxide has been increasing steadily over the years. The graph shows an increase in carbon dioxide concentrations from 310 parts per million in 1958 to approximately 390 part per millions in 2011. This massive increase in the concentration of carbon dioxide is due to fossil fuel burning (that we will discuss further along this post) and deforestation.

graph 2_part 2

After taking a look at the concentration of carbon dioxide concentration now we are going to study the cause of that concentration which is fossil fuels. Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals. Fossil fuel is a general term for buried combustible geologic deposits of organic materials, formed from decayed plants and animals that have been converted to crude oil, coal, natural gas, or heavy oils by exposure to heat and pressure in the earth’s crust over hundreds of millions of years. (

The graph above shows fossil fuel burning emissions (natural gas, oil, and coal), for several countries compared to Spain from years 1900 to 2008. As you can see the United States and China are the most extreme country that contribute to fossil fuels emission. The U.S with has been the most polluter  over the years until China surpassed it in 2006 and has been increasing since then. Spain being a small country with a population of 47.27 millions never had a serious increase in fossil fuel emissions and this is due to its very traditional culture and minimal amounts of industries.

Spain begin emitting significant amount of CO2 around 1940 but it was never as high as  US and China. Spain’s most of the CO2 emissions are contributed in liquid form that mainly occurs when dissolved in water. The other sources of CO2 are Gas, Solid, Cement, Flaring, and Bunker.

Spain’s contribution per capita is 1.6 metric  tons of carbon compared to a United States citizen which is 4.7 metric tons of carbon. This is a 34% of emissions compared to the US emissions. The value of emission of Spain is way more smaller than the US because not only is a smaller country but also because Carbon dioxide is a long lived gas in the atmosphere and this is why it builds up over time.

The per capita emission is calculated by taking the total emissions for Spain and dividing it by the population.  The average Spaniard in 2010 emitted about 1.60 metric tons of carbon. Spain is ranked as the 67th worst per capita polluter of carbon dioxide emissions in the world. As the blog author I feel pretty good about my country’s rank because other bigger countries are even worse polluters such as the US that has 4.71 emission per capita or even worst Qatar with 10.94 per capita.

contribution-per-capitaThis graph shows carbon dioxide emissions per capital for the different countries that are represented by my classmates. As you can see Australia in the biggest country that has per capita emissions followed by the United states this is due to their large population.

If the US had 309,000,000 people in 2010 and China had 1,338,000,000 people, on a Per Capita basis, a Chinese citizen is more at fault for emitting CO2.