“Human activities contribute to climate change by causing changes in Earth’s atmosphere in the amounts of greenhouse gases, aerosols (small particles), and cloudiness. The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas to the atmosphere. Greenhouse gases and aerosols affect climate by altering incoming solar radiation and outgoing infrared (thermal) radiation that are part of Earth’s energy balance. Changing the atmospheric abundance or properties of these gases and particles can lead to a warming or cooling of the climate system. Since the start of the industrial era (about 1750), the overall effect of human activities on climate has been a warming influence. The human impact on climate during this era greatly exceeds that due to known changes in natural processes, such as solar changes and volcanic eruptions.”
IPCC, 2007: Climate Change 2007: The Physical ...view middle of the document...
Natural amounts of carbon dioxide have varied from 180 to 300 parts per million (ppm). Levels today are around 400 ppm. That’s 40% more than the highest natural levels over the past 800,000 years.
We also can tell that the additional carbon dioxide in the atmosphere comes mainly from coal and oil because the chemical composition of the carbon dioxide contains a unique fingerprint.”
How are humans responsible for global warming? (n.d.). Retrieved May 22, 2016, from https://www.edf.org/climate/human-activity-is-causing-global-warming
Volcanic Eruptions, Variation in Solar Radiation, Movement of Crustal Plates, El Niño-Southern Oscillation (ENSO) are a few things that I could find that occur in nature that effect climate change that are not related to human activity.
Some of the long-term effects of global climate change in the United States are as follows, according to the Third National Climate Assessment Report:
Temperatures will continue to rise. Frost-free season (and growing season) will lengthen. Changes in precipitation patterns. More droughts and heat waves. Hurricanes will become stronger and more intense. Sea level will rise 1-4 feet by 2100. Arctic likely to become ice-free.
Global Climate Change: Effects. (n.d.). Retrieved May 22, 2016, from http://climate.nasa.gov/effects/
Climate change isn't something in the far-off future: It's a potentially disastrous reality that's already starting to have effects that are expected to worsen, experts say. Longer summers and heavier rainfalls are some of the impacts Americans are already seeing, according to the National Climate Assessment. We should expect more flooding, wildfires and drought. The report, a new White House update released, calls for urgent action on climate change. Climate change is here and action needed now, new White House report says. So, what can you do at home to take action?
Become informed, Make changes at home, Be greener at the office, Reduce emissions in transit, Get involved and educate others about climate change.
(n.d.). Retrieved May 23, 2016, from http://www.cnn.com/2014/05/06/us/climate-change-strategies/