Global warming is a process mostly caused by the emissions of greenhouse gasses into our atmosphere. These gasses are pollutants, which means that they will create sort of a second boundary between the earth's surface and the sun. In our case, the greenhouse gasses trap some of the radiation we absorb from the sun, instead of deflecting it back into space. With this excess radiation we now absorb from the sun, higher temperatures appear,this is global warming. Where do these gasses come from? What are they? The main gasses that we recognize as 'greenhouse gasses' are carbon dioxide, methane, and nitrous oxide. Carbon dioxide, being the most well known, comes from a variety of places include natural causes and man made causes, …show more content…
These all occurred between over 2 billion years ago and only 3 million years ago. The firtst and most distant ice age was over two billion years ago. The second occurred between 850-635 million years ago. The third was between 460-430 million years ago, the fourth was between 360-260 million years ago and the most recent was only 3 million years ago. These were the five main ice ages that have happened in the history of our planet. The medieval warming period is a brief climatic change that took place between 900ce to1300. Taking place in the northern hemisphere.(Asia, Greenland and Europe) In this time the temperatures rose significantly. Nature was also effected. The little ice age was a period where the overall average temperature decreased significantly. This period occurred between warmer periods and during the 17th century. GLOBAL TEMPERATURE Over the course of human history, temperatures have significantly increased. From the 1980s to the 2000s, the increase has been the most noticeable. The average global temperature has raised approximately .5 degrees Celsius. CARBON DIOXIDE LEVELS For the entirety of our planets history, carbon dioxide levels have never risen above 300. In the 1950s it had rose to a little under 320. By the 2000s it had gone all the way up to a little under400. METHANE
Methane is also another important greenhouse gas in the atmosphere is the resultant of human activities. It is infused in the atmosphere due to-
First, during the last few decades the Earth is experiencing greater rate of rising temperatures due to greenhouse gases that are being produced by human activities rather than because of environmental reasons, such as solar or volcanic activities. In 2006 the President of the National Academy of Sciences stated: “There is no doubt that the Earth is warming,” also he added that people are at least partly responsible for these changes in addition to regular factors (Cicerone, par.4). Natural factors have produced climate fluctuations on Earth for several million years. People have effected an atmosphere of the Earth just for nearly one hundred years, since Industrial Revolution has begun (Revkin 340). Of course, it is unfair to say that global warming is caused entirely by humans. For example, people can not have an impact on the position of Earth in relation to the sun, or on the galactic density, or such nature events as air emissions of volcanic gases. As a result of these environmental factors, Earth usually had higher rates of temperature fluctuations during the previous million years than it has in later centuries. On the other hand, people are responsible for the highest concentration of greenhouse gases during the last 650,000 years in the atmosphere due to industrial manufacturing, driven by the increase in consumer consumption (Lindsey, par.
The Little Ice Age is the name for the period of cooling spanning from 1400 to 1900 c.e. that took place after the Medieval Warm Period. Scientists believe that solar minimums and reversals in the Northern Atlantic Oscillation, a large atmospheric-circulation system that affects weather in the North Atlantic area including Europe, drove these changes (Encyclopedia Britannica, 2014). It is often assumed that the Little Ice Age had a global impact. However, in 2001, the Intergovernmental Panel on Climate Change put forth in a climate assessment report that though there were glacial increases in other parts of the world, they were not synchronous with the glacia...
The Medieval Times for Europe, from the 400 AD till 1400 AD, are often labeled as “The Dark Ages”. This time period has begun after a turning point known as Fall of Rome. It caused Rome to divide into two well-known civilizations: Medieval Europe, Islam, and The Byzantine Empire. Also, Medieval Europe led to a well known utopian period of “rebirth” identified as the Renaissance. The time period between 400 CE and 1400 CE wasn’t a “Dark Age” for Europe because of progress in academic success, blossom in architecture, and religious unity along with government. It wasn’t a cultural decay or decline because of the legendary time period it led to.
Firstly, global warming is said to be caused by the high levels of carbon dioxide released into the atmosphere by humans. Smoke produced by factories, vehicular exhaust, and the burning of fossil fuels such as coal in power plants are the primary sources of carbon dioxide. The theory is that carbon dioxide being released into the Earth's atmosphere is steadily building up because it cannot escape into space. The theory as to why the carbon dioxide in the atmosphere actually causes the Earth's average temperature to rise is outlined as follows:
This process is called the greenhouse effect. The main gases are mostly carbon dioxide, water vapor, and methane. The problem now is that we are adding too much greenhouse gas to the atmosphere, especially carbon dioxide. These additions of carbon dioxide are known as carbon emissions. As the amount of carbon dioxide and other greenhouse gases in the atmosphere increases more and more heat ...
...te ten millennia ago and the warming of the climate today: today scientists have reason to believe that global warming is the result of excessive emissions of damaging gases into the ozone whereas there is not a lot of evidence suggesting the earlier warming was human-induced (O'Riordan 80).
Well it hasn't for the last 800,000 years. Ice core data shows that the fastest rate of CO2 increase over the last 800,000 years was 30 ppm in 1000 years.
There was no sign of any plague or even famine during these ages (The Rise of Europe in the Middle Ages). This had been a cool and dry climate throughout the majority of Europe, during the big discovery of new lands that had
It is known that in the last 650,000 years there have been seven cycles of glacial advance and retreat with the last one 7,000 years ago. This was when the modern climate era started which lead to the beginning of human civilization all
of the kinds of gases people release into the air comes from the burning of fossil fuels. Fossil
gasses and become trapped in the atmosphere. Some of the most common greenhouse gasses are
Also called the middle ages, the medieval ages were influential in European history. It dates between the 5th and the 15th centuries of european history. The beginning of the period was marked by the collapse of Rome while its end was marked by the end of Renaissance. The Roman Empire’s fall bringing forth an idea of uniting Europe in what was called Christendom, this was based on the beliefs of the church. Features such as migration of people, invasions, population distribution, and deurbanization characterized this period. The medieval ages had three periods, which include the antiquity, the medieval periods, and the modern period, all of which exhibited different characteristics. The end of this period saw various challenges coming forth resulting into massive loss of lives and calamities. However, there was a complete transformation of the people since they advanced in technologies as well as their culture.
Global warming is the gradual rise in temperature and oceans due to recent human activity. This is created by the production of too much carbon dioxide that is released into the earth’s atmosphere. The carbon dioxide, also known as a greenhouse gas, remains in the air trapping heat and gradually warming the planet. Other greenhouse gases such as: methane, nitrous oxide, and water vapor also contribute to this slow warming. According to Live Science, The state of these gases being trapped is called the greenhouse effect, which is one of the leading causes of global warming (Lallanillia). All the gases are created differently and have different effects on the earth. As for some greenhouse gases can be in the atmosphere for a short amount of time, other gases can remain in the atmosphere for thousands of
According to a chart made by NASA, it shows that the number of atmospheric carbon dioxide in these 650,000 years. For the past 650,000 years, the number of atmospheric carbon dioxide were lower than the carbon dioxide