Gradute Research course
Week 2 Discussion Forum - (LO2) - 50 points
Due: Sunday, February 5, 2023, 11:59 PM
Find three more resources, to add to your sources from Week 1. Then, describe the strategies you used to complete a successful search in 200-400 words. Share a list of your sources, formatted in APA Style (LO2).
You can complete the post by posing a question for your peers to answer regarding research OR you can respond to two of your peers. Responses should be 100-200 words.
Essential Activities:
1. Reading the all of the required readings will assist you in writing this discussion forum.
Answer
As we Discussed earlier about global warming effects so more going to described and references adding up here in this discussion forum
Snow and ice
Perhaps the most well known feedback comes from melting snow and ice in the Northern Hemisphere. Warming temperatures are already melting a growing percentage of Arctic sea ice, exposing dark ocean water during the perpetual sunlight of summer. Snow cover on land is also dwindling in many areas. In the absence of snow and ice, these areas go from having bright, sunlight-reflecting surfaces that cool the planet to having dark, sunlight-absorbing surfaces that bring more energy into the Earth system and cause more warming.
The Carbon Cycle
Increased atmospheric carbon dioxide concentrations and warming temperatures are causing changes in the Earth’s natural carbon cycle that also can feedback on atmospheric carbon dioxide concentration. For now, primarily ocean water, and to some extent ecosystems on land, are taking up about half of our fossil fuel and biomass burning emissions. This behavior slows global warming by decreasing the rate of atmospheric carbon dioxide increase, but that trend may not continue. Warmer ocean waters will hold less dissolved carbon, leaving more in the atmosphere.
Impact on Earth
Ultimately, global warming will impact life on Earth in many ways, but the extent of the change is largely up to us. Scientists have shown that human emissions of greenhouse gases are pushing global temperatures up, and many aspects of climate are responding to the warming in the way that scientists predicted they would. This offers hope. Since people are causing global warming, people can mitigate global warming, if they act in time. Greenhouse gases are long-lived, so the planet will continue to warm, and changes will continue to happen far into the future, but the degree to which global warming changes life on Earth depends on our decisions now.
Surface Temperature
The impact of increased surface temperatures is significant in itself. But global warming will have additional, far-reaching effects on the planet. Warming modifies rainfall patterns, amplifies coastal erosion, lengthens the growing season in some regions, melts ice caps and glaciers, and alters the ranges of some infectious diseases. Some of these changes are already occurring.
References
1. Weir, J. (2002, April 8). Global Warming. Earth Observatory. Accessed April 13, 2007.
2.
1. Soden, B. J. and Held, I.M. (2006, July). An assessment of climate feedbacks in coupled ocean-atmosphere models. Journal of Climate, 19: 3354-3360.
3.
1. Lean, J. L., & Rind, D. H. (2009). How will Earth’s surface temperature change in future decades? Geophysical Research Letters, 36, L15708.