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Effects on the Earth from climate change
Effects on the Earth from climate change
Effects on the Earth from climate change
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The statement in question for this assignment puts forth various assertions: that the Little Ice Age cooled the climate worldwide, that it wasn’t the coldest period since the last ice age, and that because the earth is in a natural time of warming from this period, human-made greenhouse gasses are not plausible as a source of global warming. Some of these statements are true, but there are also fallacies within these assertions.
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...
In the essay, “Global Warming is Eroding Glacial Ice,” Andrew C. Revkin argues that global warming is the primary cause for many of the world’s natural disasters; including flash floods, climate change, and the melting of the polar ice caps. He includes multiple accounts of expert testimony as well as a multitude amount of facts and statistics to support his theory that global warming is a threat to the world. However, in the essay “Cold Comfort for ‘Global Warming’,” Phillip Stott makes the complete opposite argument. He argues that global warming is nothing to be worried about and the melting of the polar icecaps is caused by the interglacial period we are currently in. After reading both of these essays and doing extensive research on both viewpoints, I completely agree with Revkin that global warming is an enormous threat to our world today. My research not only helped me to take a stand but it also showed me the invalidity in Stott’s essay.
People are responsible for higher carbon dioxide atmosphere emissions, while the Earth is now into the Little Ice Age, or just behind it. These factors together cause many years discussions of the main sources of climate changes and the temperature increasing as a result of human been or natural changes and its consequences; even if its lead to the global warming, or to the Earth’s cooling. In their articles, “Global Warming Is Eroding Glacial Ice” by Andrew C. Revkin and “Global Warming Is Not a Threat to Polar Ice” by Philip Stott, both authors discuss these two theories (Revkin 340; Stott 344). Revkin is right that global warming is taking place. Significant increase of carbon dioxide in the atmosphere is due to human activities combined with natural factors such as volcanic emissions and solar radiation – all together they lead to climate changes and temperatures rising. At the same time, other factors such as deforestation contribute to environmental changes for some glaciers not less than air pollution. However, during global warming not all regions of the planet are affected in the same way, local warming and cooling are both possible during these changes.
Palaeogeography deals with the reconstruction of physical geographical conditions for the eras of the Earth's history. The term comes from the Greek παλαιός (palaiós) meaning ‘old’ and γεωγραφία (geōgraphía) meaning ‘a description of the earth’ and seems to have been introduced in the Earth sciences vocabulary as ‘Palaeo-Geographie’ by Ami Boué (1794‒1881), a French‒Austrian geologist, in his publication Einiges zur palaeo-geologischen Geographie (Boué, 1875, p. 2). Palaeogeography focuses on the distribution of land and sea, the spread of mountains and volcanoes and the expansion of glaciations, among others. The results are presented in geographic depictions called palaeogeographic maps. A special kind of palaeogeograpahical map is palaeobiogeographical maps depicting the distribution of
Brian Fagan’s book The Little Ice Age, explores the history of climate and how Western Civilization adapted to it, or were adapted by it. Knowing how the short term climate affected different civilizations, Fagan then begins to deduct the long term effect and the role it played in the economy, and the social and political changes. Fagan understands the relationship humans have with climate, and how it is ever changing. He points out several scenarios for which climate could be seen as a key player, such as the Irish Potato Famine, or the Vikings migrations. He believes that climate has a major role in all significant historical events, such as the Fall of the Roman Empire, which we will explore in this essay.
A tundra is a biome where trees and plants don't grow as much because of the cold freezing temperatures. The tundra has lots of warm animals that contain a lot of fur because of how cold the temperatures are there. There are mountain goats,sheep,marmots, and birds that live up there. The only way those animals survive is by eating the lying insects and eating the plants that rarely grow there. The shelter for these animals is going under a rock because the rocks protect them from the wind and it's warmer for them. Also other animals that live up in the tundra is Arctic foxes, polar bears, gray wolves, caribou, snow geese, and musk-oxen. The Tundra has harsh winters and hard summers. During the summer it last 50-60 days and it is sunny 24/7.
The Little Ice Age by Brian Fagan is a novel that discussed different climate periods that occurred. The setting of the novel occurred in Europe from 1300 to 1850. Throughout that time period the climate in Europe was changing quite drastically. The layout of this book was done chronologically and thematically. Fagan broke down the book into four different parts: Warmth and its Aftermath, Cooling Begins, The End of the “Full World”, and The Modern Warm Period. He also went further into breaking down each section from discussing the medieval warm period, to the climate seesaw, then to the specter of hunger, finally to a warmer greenhouse as well as other things in between. The way he wrote the book was not based on his personal experience. It
Global warming has become on of the most controversial issues in the media today. While most of the Western world countries have generally accepted the premise that man's chemical emissions in the atmosphere can and are affected by the world’s climate patterns, in the United States, the issue has become so politicized with many republicans challenging the science behind the theory. Global warming is a greenhouse effect whereby gases are trapped on the earth’s surface causing it to heat up (Maslin 14). It is based on the worldwide temperature records that have been maintained by human beings through their activities since the 1880,s. In addition, global warming is not only caused by human activities only but also through climate changes in solar radiance. The problem is that, humans continue to contribute to the global warming phenomenon. All citizens should work in reducing human activities that cause global warming and also support the development of nuclear power. Scientists deem that, global warming is mainly caused by human activities which accelerate the natural process by creating greenhouse gases in the atmosphere. Human activities have become a great contribution to the greenhouse effect and this means that climate changes are inevitable. They further argue that, if these activities continue and are not reduced, it will lead to more trapping of energy radiated from the earth and this will likely lead to extreme weather and global warming. Global warming should be at reduced levels or else, it will be catastrophic.
The Great Ice Age caused changes to the geographical setting of North America which affected its consequent history. Around 35,000 years ago, the glaciers froze over most of the world’s oceans, which led to sea levels lowering, ultimately revealing a land bridge connecting Eurasia and North America in the space of the present-day Bering Sea. This was extremely important for the colonization of North America since groups of Nomadic Asian hunters used it to travel to the continent, possibly to follow prey; the land bridge was used for some 250 centuries before finally becoming flooded 10,000 years ago. The end of the Ice Age also changed North America’s history because it left all people in isolation on the continent. The population was forced
The term “Little Ice Age” (LIA) currently refers to the period just after the Middle Ages, and beginning before the “warm period of the first half of the twentieth century.” Matthes originally coined the term “Little Ice Age” when he described it as an “epoch of renewed but moderate glaciation which followed the warmest part of the Holocene.” The glaciers of the Sierra Nevada in California were the focus of Mat...
Thesis statement: The global warming and the resultant climatic change is due to uncontrolled human exploitation of earth and its resources thereby emitting large volumes of greenhouse gases into the atmosphere.
Furthermore, this analysis must take place amidst serious gaps in the existing research and technology concerning the developing climatic conditions. For these reasons, global warming stands as one of the most daunting policy issues facing our world today. This is compounded by the debate over the very existence of climate change. While countless sources of empirical evidence testify to the very real presence of climate change the world over, considerable denial of the phenomenon still exists. The argument has been made that evidence of climate change is a gross overstatement, or in some cases, a complete fabrication.
Climate Change and Species Range Introduction The title of “Climate Change and Species Range”, gave me the opportunity to explore a vast array of information. It takes into account the broad and controversial topic of climate change; in general terms, the fluctuations of climatic statistical properties over a period ranging from decades to millions of years, no matter the cause (http://nsidc.org/arcticmet/glossary/climate_change.htm, n.d.). Furthermore the specific effect of the ever changing climate on the range of every known species. The area in which a species may be found during its lifetime is defined as its range (Rutledge,K et al., n.d.).
The evidence clearly provided in this essay strongly supports the argument that greenhouse gases caused by air pollution are the main cause of anthropogenic climate change. The tables and graphs demonstrate just how greenhouse gases contribute to climate change. As is evident, climate change is an ever growing problem globally. Due to the increase in anthropogenic air pollution, greenhouse gases have amplified also, as shown by table 2. Figure one shows how carbon dioxide in the atmosphere has increased exponentially, mirrored by anthropogenic emissions of carbon dioxide. The various examples described clearly support the argument that greenhouse gases caused by air pollution are the major anthropogenic causes of climate change.
Currently, scientists believe that once an ice age has been triggered, oceanic circulation currents can change and the mixing of the oceans cools the southern hemisphere. As glaciers begin to accumulate in the northern hemisphere, solar heat is reflected off the snow which leads to further cooling.
The movie cited the cause of the global climate change to be the rise in temperature due to greenhouse gasses. The warmer temperatures caused the polar ice caps to melt, and the increased amount of freshwater in the ocean disrupted the North Atlantic Current. The North Atlantic Current is what is responsible for the warm temperatures in the Northern Hemisphere. With the current disrupted the Northern Hemisphere went into an ice age. In real life, the polar ice caps are melting, but at a rate not even close to that of the one represented in the movie. Even if the ice was melting at a quicker rate, the chance that it would throw off the North Atlantic Current is slim to none. Also, there is no way that the ice would melt so quickly that a change that drastic would be made.