Indirect Scientific Measurements Of Atmospheric Composition Over The Last 10000 Years Have Informed The Climate Change Debate

Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era — and of human civilization. Earth-orbiting satellites and other technological advances have enabled scientists to see the big picture, collecting many different types of information about our planet and its climate on a global scale. This body of data, collected over many years, reveals the signals of a changing climate.

Earth has experienced many episodes of dramatic climate changes with different periods in earth history. There have been periods during which the entire planet has been covered in ice and at another time it has been scorchingly hot and dry. In this regards, earth has experienced at least three major periods of long- term frigid climate and ice ages interspersed with periods of warm climate. The last glacial period which current glaciers are the result of it, occurring during the last years of Pleistocene, from approximately 110,000 to 10,000 years age (Clayton, 1997). Indeed, glaciers present sensitive indicators of climate change and global warming and by estimating and monitoring the dynamic evolution of these ice masses, several

Climate change is the most significant, most revisited, most controversial, most discussed climate issue in modern history. Global warming serves as a glaring demerit on the lengthy list of accomplishments of mankind: a reminder that progress coupled with reckless abandon never has a good outcome. Though its presence in the national spotlight is a recent phenomenon, the early stages of global warming were detected centuries ago.

Climate change happens when long term weather patterns are refined. It can be identified in the changes of temperature, winds, precipitation, and other forms of natural processes. This can occur through many different factors, one being through human activity. Global warming is one of the main scales used to measure climate change. For life to be able to continue on Earth, the sun is required. Solar radiation is reflected back into space, however, small amounts of radiation get trapped in the Earth’s atmosphere, causing a rise of temperature. The atmosphere is composed of delicate gases, the most important gas being Carbon Dioxide. A main component on Earth is Carbon, which is released into the atmosphere through many activities, one human

Once the idea that climate change was happening was more mainstream and not dismissed, another scientist picked up Fourier’s theory. He proposed the idea that carbon dioxide could be what was trapping the heat, and also that water vapor is good at trapping heat. Although, this did not explain why the Earth was so warm. The idea was again visited later on, but this time Svante Arrhenius discovered that a certain amount of carbon dioxide in the atmosphere equals a certain amount of warmth. This trend continued for years, scientists discovering new things about the atmosphere. How did the ice ages happen? How much carbon dioxide can the atmosphere handle? These were questions scientists have asked.

The Earth 's atmosphere has changed all through history. Just in the most recent 650,000 years there have been seven cycles of frigid progress and withdraw, with the sudden end of the last ice age around 7,000 years back denoting the start of the present day atmosphere period and of human development. The greater part of these atmosphere changes are credited to little varieties in Earth 's circle that change the measure of sun based vitality our planet gets. Exploratory proof for warming of the atmosphere framework is unequivocal. The present warming pattern is of specific criticalness in light of the fact that the vast majority of it is likely human-impelled and continuing at a rate that is exceptional in the previous 1,300 years. Earth-circling satellites and other mechanical advances have empowered researchers to see the comprehensive view, gathering a wide range of sorts of data about our planet and its atmosphere on a worldwide scale. This group of information, gathered over numerous years, uncovers the signs of an evolving atmosphere. The warmth catching nature of carbon dioxide and different gasses was shown in the mid-nineteenth century. Their capacity to influence the exchange of infrared vitality through the environment is the logical premise of numerous instruments flown by NASA. There is no doubt that expanded levels of nursery gasses must bring about the Earth to warm accordingly. Ice centers drawn from Greenland, Antarctica, and tropical mountain icy masses

Scientists establish that current climate change is not part of Earth’s natural cycle by stacking contributing factors—such as orbital changes and volcanic activity—and greenhouse gas emissions next to observed temperature patterns. The line graph created clearly shows that greenhouse gasses are to be held accountable for rising temperatures. But some wonder if one degree makes that big a difference. It does. According to NASA, average temperatures bordering the conclusion

Balog was once a skeptic of climate change as he believed that the theory surrounding global warming was based off of computer models. Furthermore, he did not believe that humans could alter the world’s climate on such a global scale. However, through studies of ice records, long tubes of ice drilled from the ground, Balog found key evidence suggesting ideas contrary to his prior beliefs. These glacial tubes preserved historical records of the past similar to the rings of a tree, recording past temperatures and CO2 levels. Using these records, one can see the direct variation between temperature and CO2. Additionally, the recent spike in both

Atmospheric composition and conditions are different today than at other times in Earth's history. What types of things do scientists examine to learn what the atmosphere was like hundreds, thousands, or even hundreds of thousands of years in the past? Specifically, explain how a history of climate can be reconstructed from an ice

In the early 20th century people knew that they could cause changes to their local climates by, for example, leveling large portions of forests and over ploughing fields; but very few thought human action could affect the global climate. It wasn’t until 1958 that humans began to record measurements of carbon dioxide in the atmosphere, which revealed an increasing amount. This new data scientists were recording supported the idea of global climate change as real and that increased green house gases in the atmosphere would in fact cause the world’s climate to become warmer. In the 1980’s the world’s global temperature started to climb at a faster pace than seen before which helped the issue gain attention among the public, the scientific community,

Human produced carbon dioxide mainly caused by the burning of natural resources and deforestation has caused the earth’s temperature to rise (Spahni). The carbon dioxide adds to a problem known as the greenhouse effect. Greenhouse effect is the building up of different gases in the earth’s atmosphere causing the earth’s temperature to rise. Consequently, the key players in the greenhouse effect are as follows: water vapor 36-70%, carbon dioxide 9-26%, methane 4-9%, and ozone 3-7% (Russel). Thus, to determine the amount of CO2 and other gases that have been in the atmosphere in the past, ice core samples are taken and examined. There are ice core samples taken from as far back as 650,000 years ago (Siegenthaler). There has

A second study states “Although some records are available from the 1600s and 1700s , systematic measurements of climate began in the mid-1800s. The data include measurements of surface temperature over land and the oceans, precipitation amounts, sea-ice extents, and global sea levels. Since the 1970s, satellite studies have provided additional data on temperature trends at Earth’s surface and through the layers of the atmosphere” (“Global Warming- Britannica”). The second source backs up the first source with exact quantitative data about changes in the first. (See pictures on page 6-7 ). The first topic of the United Nation’s Climate Change 2014 Synthesis Report is “Observed Changes and their Cause” which states “Each of the last three decades has been successively warmer at the Earth’s surface than any preceding decade since 1850” (“United Nations” pg 7). These three sources prove, through scientific observational facts, that the climate of the Earth’s surface is changing very rapidly, therefore, proving that through conclusive science the topic of climate changer is accurate.

11,700 years ago the geological epoch the Holocene was thought to of began following the Pleistocene epoch, together these time periods make up the Quaternary period. The Holocene has been described as being relatively warm and with a fairly stable climate. Not only this, but it is thought to coincide with the start of agriculture as human populations rose throughout the Holocene technology became more sophisticated aiding the rise of agriculture (Holden, 2012). The early anthropogenic hypothesis was published in 2003 by Professor W.F. Ruddiman, this was a three part hypothesis in which Ruddiman proposed humans reversed natural decreases in CO2 values within the atmosphere by deforestation. That they reversed natural methane decreases after 5,000 years by irrigating rice, they also caused a warming sufficient to prevent a new glaciation within the last several thousand years and during the Holocene (Ruddiman 2005). This hypothesis has attracted a lot of attention with many people both supporting it and criticising it. Throughout this essay I will be exploring the many arguments for and against the early anthropogenic hypothesis and stating whether or not human kind could have prevented the start of an ice age during the Holocene.

The planet has been experiencing considerable climate change for the last several decades. There have been many explanations toward the main causes of the increased warming of the planet. On one hand are the environmentalists who believe that the major cause of this increased warming of the planet is the increase in greenhouse gases in the atmosphere induced by human activities. On the other hand, the scientists believe that there are natural causes of global climate change. While the supporters of the man-made theory of global climate change reason that the major greenhouse gas causing global warming is carbon dioxide, the advocates of natural causes

Over the years there has been a lot of controversy on if climate change is an issue that needs to be discussed and solved. There is a constant debate among scientist on if human actions are contributing the changing of earth’s climates. Climate change is defined as the change in average weather patterns for a specific region or Earth as a whole. This could include the change in an average temperature for a city or the amount a rainfall it receives (Dunbar, 2015). The main difference between weather and climate is the period of time specific patterns are recorded. Weather patterns are looked at over a much shorter period of time, meaning that these patterns are going to be more sporadic and change more frequently. Climate on the other had is recorded over a much longer period of time and usually show less drastic changes in patterns when compared to weather. Some people may argue that climate change is not an issue because Earth’s temperature is always changing do to natural effects. What people don’t realize is that human activity has effected the rate that earth’s temperature is changing, and just the smallest changes can lead to drastic consequences (Dunbar, 2015).