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Category Archives: Climatic change

Global Warming.

According to Yale School of  Forestry and  Enviromental studies” Overall a large majority of the American public wee personally convinced that global warming is happening( 71%)” Read more of this post

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Protected: Global Warming: A world threat

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THE UNCERTAIN FUTURE OF POLAR BEARS

Charles Monett became a well-known scientist, when he showed to the world his shocking studies about the increasing number of polar bears that were drowning in the Arctic Ocean due to the global warming. He was also a great promoter of the movement against the climate change. Five years later, the situation has not improved; on the contrary, it has been getting worse. This is the reason why more experts such as Andrew E. Derocher or Brenda Ekwuezel of the Union of Concerned Scientist have joined his cause to make a worldwide protest so as to try to save these animals. Read more of this post

Polar Bear On Thin Ice

Global warming is causing serious problems not only for human being, but also to those innocent animals as they are the polar bears. Jazmine Osier, who writes articles for the forcechange.com blog, gives us an explanation about the situation of this animal in its habitat now really damaged. In addition, as people become to concern about this issue and begin to put pressure on it, some kind of threats have been made, the last one on December 2013, which Molly Edmonds describe at the WFF page, an organization focused on wildlife conservation and endangered species. Read more of this post

Global Warming and Greenhouse Effect

Would you like to know what are the causes and the consequences that Global Warming and Greenhouse Effect have? The only thing you have to do is to read this text to know more about what does the NASA says from those two topics.

Global Warming is “the rise in the average temperature of Earth’s atmosphere and oceans. This process began in the late 19th century and has continued until nowadays. Experts are convinced that Global Warming was caused by the increase of the concentration of greenhouse gases that are produced by human’s activities such as deforestation or the burning of fossil fuels”.

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Greenhouse effect is “the process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases”.

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Now you will see some impacts of global change nowadays:

  •   More cold days and nights in winter
  •   More hot days and nights in summer
  •   More heat waves
  •   Increased the incidence of extreme high sea level
  •   Global area affected by droughts
  •   Increase the activity of the tropical cyclone activity

Now you will see some regional impacts of global change forecast by the IPCC:

  1.   North America: Decreasing snowpack in the western mountains, increasing 5-20% the rain-fed agriculture and increasing and more duration of the waves.
  2.   Latin America: A replacement of tropical forest, a risk in biodiversity has brought the extinction on many animal and a change in the available water for humans
  3.   Europe: Increased risk of island flash floods, more frequent floods, increased of the erosion from storms, glacial retreat and reduction of snow and in the crop productivity.
  4.  Africa: the inhabitants will be exposed to water stress, reduction of the yields due to rain-fed and compromising agricultural production.
  5.  Asia: Fresh water will decrease, increasing of floods and death rate from floods and droughts.

CAUSES OF GREENHOUSE EFFECT.

The Earth is covered with an air’s blanket called “atmosphere”, which is made of several gases. The sun is hotter than the Earth so he has to heat the Earth (radiation) with his rays those rays go through the atmosphere and arrive in the Earth. When the Earth is warm, this heat goes back to the atmosphere and the atmosphere’s gases, stops that heat in order not to escape to the space. These gases are called greenhouse gases and the natural process between the sun, the atmosphere and the Earth is called the ‘Greenhouse Effect’, because it works the same way as a greenhouse.

This effect is caused by some reasons:

  1. Deforestation: Increases the amount of carbon dioxide in the atmosphere and this is one of the main reasons why photosynthesis cannot take place. Deforestation has increased because of the burning of wood.
  2. Burning of Fossils: Greenhouse gases can also be released into the atmosphere due to the burning of fossil fuels, oil, coal and gas. They are used in factories and are the principal reason of greenhousing.
  3. Electrical Appliances: Another man-made that have caused Greenhouse effect is the use of electrical appliances that emit greenhouse gases to the atmosphere; those gases are called Chlorofluorocarbons and are produced by refrigerators, aerosol cans…
  4. Population Growth: It is an indirect factor and one of the major causes of greenhouse effect. If the population increases, the needs increase and that create an increase of the manufacturing and the industry process that means that they produce more gases to the atmosphere.

CAUSES OF GLOBAL WARMING.

Global Warming is caused by many things. The causes are divided into two groups, man-made causes, and natural causes.

1)      Natural causes: Are normally created by nature that produces methane gas that is a greenhouse gas that traps the heat in the atmosphere.

2)      Man-made causes: There are many man-made causes but the ones that makes more damage are: pollution, burning fossils, population and transportation that normally are used by people when they have to drive vehicles.

CONSEQUENCES OF GREENHOUSE EFFECT.

It is very difficult to forecast the consequences of global warming since natural processes as rain, hail, storms… depend on many issues. The predictable’s effects are:

(1)    More droughts and flooding: When the weather gets warmer, evaporation from land and sea increases. Famine is the main problem that this factor can caused due to crops failure.

(2)    Less ice and snow: The icebergs and glaciers are shrinking faster than before and this problem can caused drought and a lack of domestic water supply.

(3)    More weather incidents: The warmer climate will cause more heatwaves, more violent rainfall and increase the number of storms.

(4)    Rising the sea level: this happens due to the ice’s melting and can caused the disappearance of areas that are now above the sea level. For this reason, plants will be affected and there will be more diseases spread by insects.

CONSEQUENCES OF GLOBAL WARMING

7.2 degrees is the additional time that scientist have said about the heating that the Earth could get during the 21st century. This rise of temperature will have negatives effects on the earth’s climate and on all things that are alive. Some of these changes have just begun:

i.            Weather patterns: hot, dry weather led to wildland dire season that destroy the major part of the forests.

ii.            Health: Heat waves contribute to the death

iii.            Wildlife: many animals are beginning to die due to the changes that are beginning with the global warming

iv.            Glaciers and sea level: will increase due to the melting of glaciers.

EXPERTS OPINIONS

  • Intergovernmental Panel on Climate Change: “Taken as a whole, the range of published evidence indicates that the net damage costs of climate change are likely to be significant and to increase over time”.
  • Chair Henry Kendall: “We the undersigned, senior members of the world’s scientific community, hereby warn all humanity of what lies ahead. A great change in our stewardship of the earth and the life on it is required, if vast human misery is to be avoided and our global home on this planet is not to be irretrievably mutilated”.
  • Sarah Tsao: “The Earth is like a giant oven; it’s getting really hot”.
  • Steve Lowe: “The threat of severe global climate imbalance and localized climate chaos will continue to accelerate as fossil-fueled civilization continues down its current consumptive-oriented path. Methane from termites, cows, garbage dumps and rice paddies threaten to inevitably unleash compacted methane currently locked in polar ice. Reckless burning of fossil fuels unleashing long-cycle carbon dioxide is only the catalyst. Remember that “short-cycle” carbon dioxide is okay — local combustion / conversion of plant-life that was alive the previous season — only releases C02 “in balance” with the C02 that was inhaled by the living biomass/plant. Every action has consequences! Every day is Earth Day!”

QUOTES

Global warming:

  • Sienna Miller “If each one of us does our bit, we will be helping to keep Global Warming from harming our countries”
  • Brian Eno: “I would like to see a future where artists think that they have a right to contemplate things like Global Warming”
  • Dennis Miller: “The radical right is so homophobic that they are blaming Global Warming on th AIDS quilt”
  • David Suzuki: “The failure of world leaders to act on the critical issue ofGlobal Warming is often blamed on economic considerations”
  • Freeman Dyson: “Unfortunately the Global Warming histeria, as I see it, is driven by politics more than sciences”
  • John Coleman: “Global Warming: It is a hoax. It is bad science. It is high-jacking public policy. It is the greatest scam in history”

Greenhouse effect:

  • Mahatma Gandhi: “We must become the change we want to see in the world.”
  • William Cowper: Who loves a garden loves a greenhouse too.
  • Elon Musk: “You could warm Mars up, over time, with greenhouse gases”
  • Jack Herer: “You see, the Greenhouse Effect is a direct result of burning fossil or old carbon fuels”
  • Joan Jett: “Factory farming is one of the biggest contributions to the most serious environmental problems. The meat industry causes more greenhouse gas emissions tan all the cars, trucks, planes and ships in the world.”
  • Gina McCarthy: “Greenhouse gas pollution, throught its contribution to global climate change, presents a significant thread to Americans’ health and to the environment upon which our economy and security depends”.

BIBLIOGRAPHY: (All taken on the 19th December 2013)

–          NASA: “Global Climate Change: Vital Signs of the Planet” (2007):http://climate.nasa.gov/effects

–          ThinkQuest Junior by Team J003411: “Causes of Global Warming” (Copyright March, 2000): http://library.thinkquest.org/J003411/causes.htm

–          Roy D’Silva: “Causes of the Greenhouse Effect” (Last Updated: March 20, 2012); ©2000-2012, 2013 Buzzle.com®: http://www.buzzle.com/articles/causes-greenhouse-effect.html

–         Natural Resources Defense Council : „Consequences of Global Warming“ (Last revised 12/10/2008): http://www.nrdc.org/globalwarming/fcons.asp

–          British Geological Survey: “Consequences of greenhouse-effect temperature rises” © NERC 2013:http://www.bgs.ac.uk/discoveringGeology/climateChange/CCS/consequencesOfTemperatureIncrease.html

–          Project by students for students: “Views and predictions”; Oracle ThinkQuest:http://library.thinkquest.org/11013/gwviews.html

–          Brainy Quote: “Greenhouse Quotes” © 2001 – 2013 BrainyQuote®:http://www.brainyquote.com/quotes/keywords/greenhouse.html

–          Brainy Quote: “Global Warming Quotes” © 2001 – 2013 BrainyQuote®:http://www.brainyquote.com/quotes/keywords/global_warming.html

Published by Aroa Sobrino Esteban

Al Gore´s An Inconvenient Truth

Today I am going to talk about Al Gore´s film “An Inconvenient Truth”.descarga As Stefan Lovgren says in his article in the National Geographic, the message in An Inconvenient Truth, the movie starring former U.S. Vice President Al Gore, is clear: Humans are causing global warming, and the effects are devastating. Most scientists agree that the Earth is heating up, due primarily to an atmospheric increase in carbon dioxide caused mainly by the burning of fossil fuels such as coal and petroleum. (Stefan Lovgren for National Geographic News Updated May 25, 2006)

This film is a documentary (2006) about the global warming presented by the United State Vice President Al Gore. Premiering at the 2006 Sundance Film Festival and opening in New York City and Los Angeles on May 24, 2006, the documentary was a critical and box-office success, winning 2 Academy Awards for Best Documentary Features. The film grossed $24 million in the U.S. and $26 million in the foreign box office, becoming the 9th highest grossing documentary film to date in the United Sates. (Wikipedia The Free Encyclopedia. Last modified on 6 November 2013 at 18:59)

Through the film he discusses the scientific opinion on the climatic change using graphs, images, data etc. in order to make it easy to understand. Al Gore also shows the effects that the global warming will have in the future. The documentary shows evidences of why the global warming is an important issue. The idea of this film started when the producer of the film saw Al Gore´s presentation about the global warming, then they decided to adapt this into a film.

The scientific bases of the film:

Gore supports his thesis with the appropriate data which included: (these main point are takin from the Wikipedia the free encyclopedia)

  • The Keeling curve[1], measuring CO2 from the Mauna Loa Observatory.  It shows
atmosfera 1

atmosfera 1

how from 1960 the concentration on CO2 has increased on the atmosphere.

  • The retreat of numerous glaciers is shown in before-and-after photographs. Since 1850 the ice melting in the glaciers has affect animals´ way of life and their ecosystem. Sea level rise due to this retreatment.
  • A study by researchers at the Physics Institute at the University of Bern and the European Project for Ice Coring in Antarctica presenting data from Antarctic ice cores showing carbon dioxide concentrations higher than at any time during the past 650,000 years.[32]
  • Temperature record since 1880 showing that the ten hottest years ever measured in this atmospheric record had all occurred in the previous fourteen years.

The movie ends with the a little speech of Al Gore arguing that if we start acting in an appropiated way, the effects of the global warming can be reversed and that we can created less CO2 and plant more vegetation. These are the exact words of the end:

“Each one of us is a cause of global warming, but each one of us can make choices to change that with the things we buy, the electricity we use, the cars we drive; we can make choices to bring our individual carbon emissions to zero. The solutions are in our hands, we just have to have the determination to make it happen. We have everything that we need to reduce carbon emissions, everything but political will. But in America, the will to act is a renewable resource.” (Al Gore “An inconvenient Truth”)

My opinion:  I strongly recommend you to watch it as you will realize on the effect the human have in our world. It is very well done, it is easy to understand but at the same time the information it gives you is very deep. The film is full of images, graphs, tables etc. to make the understanding easier. Apart from this you will enjoy the film because it is very entretaining and makes you think about nowaday´s situation.

Glacier in 1973
Glacier in 1973
Gacier 2008

Gacier 2008

References:

Marina Estancona


[1] The Keeling curve: It is a graph which shows the change in CO2 concentration on the Earth´s atmosphere.

The truth about the melting of ice caps

It is clear that the Earth will not be the same if the climate change continues. The effects are thought to be terrible for many people , including Tim Folger, but according to Ben Gaul, they will do more good than warm. It seems that the sea levels will rise but not until the effects are clear will we know what is the truth. Read more of this post

The 11th Hour

The11hour

The 11th Hour‘  is an environmentally friendly phenomenon which will bring you to the real world   we are living. Tasha Robinson, a senior editor and double-majored in journalism and film at the university of University Of Iowa,  reviewed the film in August 2013; as well as it did Jürgen Fauth, a long-time film critic. Apart from that, the main themes and participants are also important for expanding the influence of the documentary and that is why the Top Documentary Film blog, a blog dedicated specially to the analysis of films, focus on it. Read more of this post

Should they pay for our faults?

Climate change is not only endangering us, but also animals; it is because of us that they are dying . Informing people about it is the first step to make them aware of it. There are many critical aspects that people should know about, for example the death of thousands of penguins, as Sally Deneen explains. The problems and dangers that animals are facing is the issue Liz Langley and the previously mentioned Sally Deneen talk about. Liz is an award-winning writer who writes for National Geographic and Sally is a journalist aware of the climate change. Both of them offer a clear view of the effects of these changes on animals. Read more of this post