GlabalWarming and War

Global Warming and War.-by Joshua Churchill

What is Global warming?- Glabal warming is that the entire earth is heated up, and that of earths temperature is rising. As far back as the 1850s, a small number of weather stations around the world were comparing temperature records. These numbers have grown during the 20th century, and today there are thousands of land-based weather stations and ocean buoys in every corner of the world are monitoring temperatures. Ways we can tell and monitor are:
Ice cores: One method is to drill into glaciers and ice sheets to extract ice samples. Since the ice was formed from snow that fell over the centuries, the deeper you drill, the farther back in time you are looking. The chemical composition of the ice goes very strongly with temperature. Scientists have constructed temperature records from ice cores taken from Tibetan and Andean glaciers, an ice cap in the Canadian Arctic, and the Greenland and Antarctic ice sheets. These records show that, at low latitudes, 20th century climate was unusually warm compared to the previous 2,000 years. In the Canadian Arctic, warming over the past 150 years is unprecedented compared to the previous millennium. In Greenland and coastal Antarctica, there is clear evidence of warming over the past century. Ice cores from Antarctica's interior do not show warming over the past century.
Tree rings: In temperate regions, trees generally produce one ring a year, and some tree species are extremely long-lived. Patterns in the width and density of tree rings provide year-by-year temperature information. Scientists have tree ring records from more than 2,000 sites on all inhabited continents, though most of the records are from temperate areas of the Northern Hemisphere. These records show that 20th century warming was unusual compared to at least the past 500 years.
Coral reefs: Corals build their hard skeletons with annual bands of calcium carbonate. The geochemical composition of each annual band varies depending on the temperature of the water at the time the band was formed. Scientists have coral proxy records from the Atlantic, Indian, and Pacific oceans, with most of these going back 400 years. Coral proxy records indicate sea surface warming in most tropical locations over the past century.
How is it Caused?-The theory of global warming is nothing we have'nt considered before. The Nobel Prize-winning chemist Svante Arrhenius first proposed the idea of global warming in 1896. Carbon dioxide, he knew, traps heat in the Earth's atmosphere. He also knew that burning coal and oil releases carbon dioxide (CO2). Arrhenius speculated that continued burning of coal and oil would increase concentrations of CO2 in the Earth's atmosphere, making the planet warmer, This was called the greenhouse effect. To find out what is causing today's rapid global warming, scientists have examined all the factors that can affect the Earth's temperature. There are three factors that could be responsible for recent rapid global warming:
  1. The sun
  2. Earth's reflectivity
  3. Greenhouse gases
Which of these is causing our current global warming?-It's not the sun: cause of little warming since 1750, none since 1980s.
Though the climate system is powered by the sun but it is not getting much warmer of the last few thousand years. According to IPCC estimates, the sun has accounted for just a small portion of warming since 1750. A study of more recent solar activity has demonstrated that since about 1985 the sun has changed in ways that, if anything, should have cooled the planet—even as global temperatures have been rising. So the sun is not causing global warming. It's not reflectivity: changes point to cooling, not warming
Around 30% of the sun's energy that reaches the Earth is reflected back into space. The changes in how much sunlight is absorbed, and how much is reflected, can affect global temperatures. Using satellites, land observations, and computer models, scientists have calculated how Earth's reflectivity has changed over time. These calculations say that human-produced particulate pollution, especially reflective sulfur-containing particles, have had a cooling effect on the climate. The masking some of the warming effect of greenhouse gases is being caused. The slight decrease in global temperature between 1945 and 1975 was likely caused by a combination of rising particulate pollution and natural factors. Warming resumed after 1975 when industrialized countries began to clean up their particulate pollution while continuing to increase their greenhouse gas emissions. As for human land use changes (primarily forest clearing for agriculture), they have on balance brightened the planet since 1750. This would have a cooling effect, yet we've seen warming. Changes in the frequency of volcanic eruptions, which can send reflective particles up into the stratosphere, also cannot explain the observed warming trend. So reflectivity is not causing global warming. All the evidence points to greenhouse gases.
That leaves the greenhouse effect as the only remaining scientific explanation for the rise in global temperatures in recent decades. We have direct measurements of CO2 concentrations in the atmosphere going back more than 50 years, and indirect measurements (from ice cores) going back hundreds of thousands of years. These measurements confirm that concentrations are rising rapidly. Historic CO2 levels have risen in the last century dramatically.
The amount of carbon dioxide in the atmosphere is higher than at any time in measurable history, and predicted to increase dramatically this century. Source: GlobalChange.gov The amount of carbon dioxide in the atmosphere is higher than at any time in measurable history, and predicted to increase dramatically this century. Source: GlobalChange.gov Though natural amounts of CO2 have varied from 180 to 300 parts per million (ppm), today's CO2 levels are around 390 ppm. That's 30% more than the highest natural levels over the past 800,000 years. Increased CO2 levels have contributed to periods of higher average temperatures throughout that long record. (Boden, Carbon Dioxide Information Analysis Center) We also know the additional CO2 in the atmosphere comes mainly from coal and oil, because the chemical composition of the CO2 contains a unique "fingerprint." As far as scientists are concerned, it's case closed: human activity is causing the Earth to get warmer, primarily through the burning of fossil fuels, with a smaller contribution from deforestation. All other scientific explanations for why the Earth is getting warmer have been eliminated.
How does is it going to affect War?- Food and water shortages fueled in the future by global warming could spur conflicts and even wars over these essential resources.
Changes in climate, such as temperature and rainfall, can significantly change the availability of crops, livestock and drinking water. Resource shortages could, in turn, prompt people to turn to war to get what they need to survive, several experts have warned.
Studies have reviewed 899 wars fought in China between 1000 and 1911 and found a correlation between the frequency of warfare and records of temperature changes.
Similarly, several top retired American military leaders released a report in April warning of the national threat posed by global warming, predicting wars over water, refugees displaced by rising sea levels and higher rates of famine and disease.
Climate change could possibly improve growing conditions in some areas (particularly higher latitudes), while hurting them in others (especially the tropics).
Potential impacts of climate change, could then make all-out war is very unlikely, unless international institutions and global markets completely fail.
Studies show on climate change doesn't necessarily prove that temperature changes caused increased warfare, but that there could certainly be a relationship between the two.
Though scientists have argued that a looming peak in oil production could potentially generate conflict on a global scale as industrialized nations to fight over dwindling petroleum supplies in an area on constant demand on it.
Summary.- If Global Warimg is still in efect and can't be stopped, the entire world will be affected. And that it will affect entire eco-ystems and wildlife, it will cause conflict of resouces.
Conclusion.- My main point is that global warming is real and that if it keeps esscolating it could cause many deaths of eco-systems and wars could come into existance over resources and survival.
Cite sources: 1.) Enviormental Defence Fund.- http://www.edf.org/climate/how-we-know-the-earth-is-warming
2.) Livescience.-http://www.livescience.com/1660-global-warming-fuel-war.html

Meagan Scott: Very Nice! Lots of great information. Looks like you took alot of time and effort. Great Job! :-)
luke: i like that it has lots of information and it keeps you interested.
Hannah Smick: Very neat, lots of valid and good points. Liked how you put it together!

Jenny falatko: Good Info. And i agree we need to move to be better because war is not the awnser