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Human influence on global warming
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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.
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.
Global warming is a major ecological concern today. It is being caused by man’s ever
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.
The Little Ice Age was a period of time in which parts of Europe and North America were exposed to colder winters than those generations before and after. This phase lasted a surprisingly long time from around the 1300’s to about 1870. Although it is not considered to be a full on “ice age”, it is said to have many effects on history including important roles on defining how we currently live today.
Most climate scientists agree that the main cause of global climate change is the human expansion of the greenhouse effect. This is the global warming that results when the atmosphere traps heat radiating from Earth toward space (climate.nasa.gov). The main gases that contribute to the greenhouse effect include water vapor, carbon dioxide, methane, nitrous oxide, and chlorofluorocarbons (climate.nasa.gov). Human activities are changing the natural greenhouse effect. The burning of fossil fuels like coal and oil has increased the amount of carbon dioxide in the atmosphere (climate.nasa.gov). Carbon dioxide levels have increased from 280 parts per million to 379 parts per million in the last 150 years due to human act...
The Himalayan mountains are home to the second largest body of ice in the world, these glaciers are extremely important to the lives of many people, animals and ecosystems.The Himalayan range includes about 15,000 glaciers, which store about 12,000 km3 (3000 cubic miles) of freshwater. The Himalayan mountains are located in the northeastern part of India and pass through several countries including Pakistan, China, Afghanistan, Nepal and Bhutan. The glaciers in the Himalayan mountains are at the headwaters of many essential and large rivers throughout the himalayan and asian countries. Over the last 30 years some glaciers in the Himalayas have retreated one kilometre. The negative effects of CO2 and global warming on the glaciers have caused the glaciers to melt, or retreat having a lot of drastic effects. Over time, as a result of glacier shrinkage, normal glacier melt will not be able to contribute to the Himalayan region's water supply each year. Water availability will not be affected at low elevations because they are mostly dependent on monsoon rains, however at higher elevations glacier retreats will result in streamflow alterations in some basins.
Global warming and global climate change is the study of future increases of temperature across the globe. Studying climate change refers to how the over- all climate will change such as the dry places getting dryer and the wet places getting wetter. Global climate is dependent on “the greenhouse effect a natural process that helps regulate temperature” (Easterling and Karl). In the past few centuries humans have had a monumental effect on increasing of greenhouse gases in the atmosphere. Climate change is result of the increase amount of the greenhouse gasses in the atmosphere such as methane, carbon dioxide, water vapor, nitrous oxide, and ozone. “Global temperature has rose approximately 1.4 degrees Fahrenheit over
For over a hundred years, scientists have been carefully gathering and verifying data on the earth's temperature. The latest data reveals some striking trends:All 10 of the warmest years on record have occurred in the last 15 years The 1990's have already been warmer than the 1980's- the warmest decade on record The global average surface temperature has risen 0.5 degrees (site source)For the first time ever, the Intergovernmental Panel on Climate Change, the authoritative international body charged with studying this issue, concluded that the observed increase in global average temperature over the last century "is unlikely to be entirely natural in origin" and that "the balance of evidence suggests that there is a discernible human influence on global climate."The Earth's climate is the result of extremely complex interactions among the atmosphere, the oceans, the land masses, and living organisms, which are all warmed daily by the sun's enormous energy. This heat would radiate back into space if not for the atmosphere, which relies on a delicate balance of heat-trapping gases, including water vapor, carbon dioxide, nitrous oxide, and methane, to act as a natural "greenhouse," keeping in just the right amount of the sun's energy to support life.For the past 150 years, though, the atmospheric concentrations of these gases, particularly carbon dioxide. Have been rising. As a result, more heat is being trapped than previously, which in turn is causing the global temperature to rise. Climate scientists have linked the increased levels of heat-trapping gases in the atmosphere to human activities, in particular the burning of fossil fuels (coal, oil, and natural gas for heating and electricity; gasoline for transportation) deforestation, cattle ranching, and rice farming.
Climate change is the alteration of temperature and precipitation patterns over an extended period of time. Across the globe, scientists are identifying climate change in relation to the greenhouse gas emissions and solar cycles. While most researchers believe that the increase of atmospheric CO2 is effecting global warming, others are endorsing the concerns of another Ice Age, which is likely to occur due to orbital variations of the Earth. In his article, Abrupt Climate Change, Richard Alley titles one section, ?Chilling Warmth,?15 which perfectly describes the angst of many people who foresee a deadly warming trend, and also the paradox of global warming causing another ?Little Ice Age.? These competing discourses are extremely pertinent to the country of Greenland, which is at the forefront of the climatic change debate.
Our world is always changing, so is our climate. Some changes are apparent, others not so much. Climate change is an important issue of concern in the twenty-first century. Environment, if it changes at all, evolves so slowly that the difference cannot be seen in a human lifetime (Wearth, 2014). Mostly all scientists predicted that it would take thousands of years for the planet to warm up due to emissions of carbon dioxide from fossil fuels called greenhouse gases. But in the past 200 years, things began to change. The rate and the amount of warming that is happening on this planet are unprecedented. Wearth says, “People did not grasp the prodigious fact that both population and industrialization were exploding in a pattern of exponential
There are many different glacial landforms created by glacial erosion, one of these landforms is U-shaped valleys or glacial troughs. This glacial landform has many distinct characteristics. One of these characteristics is that it has very steep valley sides caused by the glacier as it moves down the valley eroding the sides of the valley by the processes of abrasion and plucking. Abrasion is when the boulders and moraine carried by the glacier rubs and erodes the valley side as it physically moves down the valley. Plucking happens when the water in the glacier freezes inside of the cracks in the individual rocks on the valley side then the water freezes and as the glacier moves the rock is plucked or torn from the valley side producing the steep side to the valley.
Humans have caused global warming by doing many things but the main three are burning of fossil fuels and green house gas emission, deforestation, and excessive use of chemical fertilizers. Global warming is like a bad dream going worse.
Glaciers transport materials as they move, while they also carve away the land underneath them. This ice formation picks up broken rocks and soil debris far from their original homes, this creates so interesting landforms.
All animals are affected by climate change. One animal that is affected by climate change is the Spotted Seal or Phoca largha. They live in the Beaufort, Chukchi, Bering, and Okhotsk Seas. These are some of the world's smallest oceans they are the least known basins and bodies of water. This lack of knowledge about them results from their remoteness, hostile weather, and perennial or seasonal ice cover.
Many climate scientists, researchers, and environmentalists are expressing concerns about shifts in the overall climate of the earth. It is believed that a dramatically dangerous warming is taking place in the overall global climate, a problem that is referred to as "global warming”. Global warming is the observed century-scale rise in the average temperature of Earth’s climate system. This temperature rise is due to the damaging effects of deforestation and the burning of fossil fuels. It is our responsibility to preserve our planet and our way of living but in order to do that we need to act now. If we continue to destroy the planet with no regard as to how serious this matter is there could be several negative effects to us as human being and other living thing on Earth. This is why global warming is truly a global issue and needs to be tackled collectively. We must to act now in order to reduce the dangerous levels of carbon dioxide emissions and we must to work together.
As the Earth is heating from climate change, it is causing effects on Earth’s glaciers. Glaciers around the whole world have been slowly melting away sense the early 1980’s. There may be a large amount of ice in the world with the majority of drinking water in the world is in glaciers and ice caps, we have been neglecting to notice that it is quickly melting away. There has been evidence that the world is slowly increasing in temperature due to the carbon dioxide levels of the atmosphere. Since the 1880’s, the global temperature was calculated to be 13.7°C (56.71°F), and rose to be over 14.5°C (58°F) (Osborn).