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soledad05

Global Warming FAQ - What Causes Global Warming? - 0 views

environment.about.com/...globalwarming.htm

causes warming global Global Warming opinions scientists

shared by soledad05 on 24 Jan 13 - Cached
  • Question: What Causes Global Warming?Answer: Scientists have determined that a number of human activities are contributing to global warming by adding excessive amounts of greenhouse gases to the atmosphere. Greenhouse gases such as carbon dioxide accummulate in the atmosphere and trap heat that normally would exit into outer space.
  • Question: What Causes Global Warming?Answer: Scientists have determined that a number of human activities are contributing to global warming by adding excessive amounts of greenhouse gases to the atmosphere. Greenhouse gases such as carbon dioxide accummulate in the atmosphere and trap heat that normally would exit into outer space.
  • While many greenhouse gases occur naturally and are needed to create the greenhouse effect that keeps the Earth warm enough to support life, human use of fossil fuels is the main source of excess greenhouse gases. By driving cars, using electricity from coal-fired power plants, or heating our homes with oil or natural gas, we release carbon dioxide and other heat-trapping gases into the atmosphere. Deforestation is another significant source of greenhouse gases, because fewer trees means less carbon dioxide conversion to oxygen.
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  • While many greenhouse gases occur naturally and are needed to create the greenhouse effect that keeps the Earth warm enough to support life, human use of fossil fuels is the main source of excess greenhouse gases.
  • driving cars, using electricity
  • heating our homes with oil or natural gas
  • Deforestation
  • risen by 151
    • soledad05
      soledad05 on 24 Jan 13
       
      driving cars, using electricity, and heating homes with oil/natural gas = keywords! (or sentence, I guess.)
rodrigomelara

New NASA Data Blow Gaping Hole In Global Warming Alarmism - Forbes - 0 views

www.forbes.com/...old-in-global-warming-alarmism

global warming global warming data climate climate change hoax scientists

shared by rodrigomelara on 24 Jan 13 - No Cached
  • NASA satellite data from the years 2000 through 2011 show the Earth’s atmosphere is allowing far more heat to be released into space
  • The study indicates far less future global warming will occur than United Nations computer models have predicted, and supports prior studies indicating increases in atmospheric carbon dioxide trap far less heat than alarmists have claimed.
  • rodrigomelara on 24 Jan 13
     
    Image by AFP/Getty Images via @daylife NASA satellite data from the years 2000 through 2011 show the Earth's atmosphere is allowing far more heat to be released into space 
Jennifer Garcia

HowStuffWorks "If the polar ice caps melted, how much would the oceans rise?" - 2 views

science.howstuffworks.com/...question473.htm

ice caps global warming temperature heat sea level climate change'

shared by Jennifer Garcia on 24 Jan 13 - No Cached
  • You may have heard about global warming. It seems that in the last 100 years the earth's temperature has increased about half a degree Celsius. This may not sound like much, but even half a degree can have an effect on our planet. According to the U.S.
  • But the rising temperature and icebergs could play a small role in the rising ocean level. Icebergs are chunks of frozen glaciers that break off from landmasses and fall into the ocean. The rising temperature may be causing more icebergs to form by weakening the glaciers, causing more cracks and making ice mo­re likely to break off. As soon as the ice falls into the ocean, the ocean rises a little.
  • The main ice covered landmass is Antarctica at the South Pole, with about 90 percent of the world's ice (and 70 percent of its fresh water). Antarctica is covered with ice an average of 2,133 meters (7,000 feet) thick. If all of the Antarctic ice melted, sea levels around the world would rise about 61 meters (200 feet). But the average temperature in Antarctica is -37°C, so the ice there is in no danger of melting. In fact in most parts of the continent it never gets above freezing.
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  • There is a significant amount of ice covering Greenland, which would add another 7 meters (20 feet) to the oceans if it melted. Because Greenland is closer to the equator than Antarctica, the temperatures there are higher, so the ice is more likely to melt.
  • But there might be a less dramatic reason than polar ice melting for the higher ocean level -- the higher temperature of the water. Water is most dense at 4 degrees Celsius. Above and below this temperature, the density of water decreases (the same weight of water occupies a bigger space). So as the overall temperature of the water increases it naturally expands a little bit making the oceans rise.
  • Jennifer Garcia on 31 Jan 13
     
    the temperature of the world has increased .5 degrees Celsius over the last 100 years. The heat is melting the icebergs. The sea levels have risen 15-20cm over the last 100 years.90% of the world's ice is in Antarctica.
soledad05

Sources | Climate Change | US EPA - 0 views

www.epa.gov/...sources.html

climate climate change epa Global global warming warming

shared by soledad05 on 31 Jan 13 - No Cached
  • Electricity production generates the largest share of greenhouse gas emissions.
  • Greenhouse gas emissions from transportation primarily come from burning fossil fuel for our cars, trucks, ships, trains, and planes.
  • ustry
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  • reenhouse gas emissions from businesses and homes arise primarily from fossil fuels burned for heat
  • Greenhouse gas e
  • missions from industry primarily come from burning fossil fuels for energy as well as greenhouse gas emissions from certain chemical reactions necessary to produce goods from raw materials
  • Greenhouse gas emissions from agriculture come from livestock such as cows, agricultural soils, and rice production.
  • In the United States, since 1990, managed forests and other lands have absorbed more CO2 from the atmosphere than they emit.
  • soledad05 on 31 Jan 13
     
    In this section of the EPA greenhouse gas page, it states the different sources of greenhouse gas emissions. I understand now, after reading it, that greenhouse gas emissions come from not just one place. They come primarily from electricity production, however hey also come from transportation (planes, trains, cars and boats), Agriculture (cows, livestock), Land use, even from our own homes!
Ray Sunshine

Climate Change Facts - An Introduction | NRDC - 0 views

www.nrdc.org/...climatebasics.asp

climate change climate global warming Global points of view opinions debate

shared by Ray Sunshine on 31 Jan 13 - No Cached
  • Carbon dioxide and other global warming pollutants are collecting in the atmosphere like a thickening blanket, trapping the sun's heat and causing the planet to warm up.
  • over the past 50 years the average global temperature has increased at the fastest rate in recorded history
  • Ray Sunshine on 31 Jan 13
     
    Carbon Dioxide and other harmful things are piling up in our atmosphere. The bad gases are causing the global warming. Apparently, the temperature could be from 3-9 degrees higher by the end of the century.
Irma h

Global Warming, Arctic Sea Ice, and Climate Feedbacks | Duke Dean's Blog: The Green Grok - 0 views

blogs.nicholas.duke.edu/...seaicestudy-grl

effects being felt plants animals arctic sea ice blog dean duke Warming Global global warming climate scientists debate opinions points of view hoax climate change

shared by Irma h on 24 Jan 13 - No Cached
  • There are lots of reasons to be concerned about this trend, not the least of which is the amplification of global warming through a positive feedback. (Since ice is a lot more reflective of sunlight than ocean water, melting sea ice allows more heat from the Sun to be absorbed instead of reflected, causing temperatures to rise more rapidly, thus melting more ice, and so forth, creating a positive feedback and raising the Earth’s reflectivity, also known as its albedo.)
  • Irma h on 24 Jan 13
     
    This is another thing really important to know about of global warming
toto dile

Global Warming Facts, Causes and Effects of Climate Change | NRDC - 0 views

www.nrdc.org/globalwarming

glabal warming global warming

shared by toto dile on 24 Jan 13 - No Cached
  • When it comes to connecting the dots between climate change, extreme weather and health, the lines are clear. The earth is saying something with record heat, drought, storms and fire. Scientists are telling us this is what global warming looks like
  • Climate change will have a significant impact on the sustainability of water supplies in the coming decades. A new analysis, performed by consulting firm Tetra Tech for the Natural Resources Defense Council (NRDC), examined the effects of global warming on water supply and demand in the contiguous United States. The study found that more than 1,100 counties -- one-third of all counties in the lower 48 -- will face higher risks of water shortages by mid-century as the result of global warming. More than 400 of these counties will face extremely high risks of water shortages. Read more »
  • Each year American power plants pump more than two billion tons of carbon dioxide into the air. EPA's new standards would reduce carbon pollution and protect public health. Read more »
  • FITO MW3 on 24 Jan 13
     
    thats what global warming does 
  • toto dile on 24 Jan 13
     
    When it extreme weather and health the lines arre clear
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