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2009). Though innovative, this use of the model appears to be highly reliable and appropriate given the context of the study. At the same time, very little direct observation is utilized for correlation to this data, and retroactive predictions are not presented to demonstrate the model's efficacy, raising some doubt.
Discussion
Though the system of ozone depletion and recovery was thought to be fairly well understood given the decades of research on the subject, emerging data regarding significant influential issues that had previously gone unaccounted for have suggested that this understanding is not as complete or as accurate as was previously thought. Climate change is suggested in many of the studies to have a significant impact on the rates of stratospheric ozone depletion and recovery, which in turn is seen as having an effect...
This potentially cyclical interaction gives rise to complexities that are only in the preliminary stages of being identified, let alone understood. Continuing research over the next decade is sure to provide greater clarity to and a more comprehensive understanding of these issues, but the development of accurate models seen taking place in current research suggests that methodologies will still be settling into a new paradigm of validity for some time, based on new observational data.
What is currently known is that stratospheric ozone is in a state of recovery, at least in most areas where significant depletion has occurred. The massive reduction of ozone depleting substances in the atmosphere due to the limitations of the Montreal Protocol is a major factor in this noted recovery, though depletion is…
His government wanted HCFCs to replace CFCs. HCFCs are far less damaging to the ozone layer. They are used in refrigeration. He proposed that the deadlines for the cessation of the use of CFCs be advanced by a decade. The global agreement was to phase out CFCs among industrialized countries by 2030 and among developing countries by 2040. It was also later discovered that HCFCs warm up the earth
A found this article particularly shocking for the immense figures suggested by the number of babies born daily. Such statistics opened my eyes to the core of the problem. Not only are we destroying the planet through our overindulgent, selfish and unsustainable habits, but also by the sheer number of us doing the same thing. No wonder studies such as the one in the first article found very little positive
At the same time, research on ozone depletion showed the dire situation and helped support pushes for reform and regulation of harmful chemicals being used in such a vulnerable context as in our atmosphere. Many Western nations have passed legislation limiting the types of chemicals and levels which are acceptable, for example the Air Pollution Act in the United States (U.S. Environmental Protection Agency 2010). Conclusions With this growing amount of
Environmental Issues Faced in 21st Century Aviation Reducing Communication and Coordination Tools and Metrics Technology, Operations and Policy Demand Aviation and the Environment Effects on the health Local Air Quality Climate Change Total Climate impacts from aircraft Interdependencies Mobility, Economy and National Security Interactions between Government, Industry and Groups Aviation Greenhouse Gas Emissions Economic Impact SPCC Regulations Local Airport Issues De-icing Fluids A Framework for National Goals Realities and Myths Metrics Recommended Actions Environmental Issues Faced in 21st Century Aviation Environmental awareness in regards to 21st century aviation among the public and politicians has
Those that do not understand why Bush would relax these rules and harm the environment cite once again the tremendous amount of money that the utility industry has given to the Bush campaign as a potential reason for the rule changes. This does not mean that the writer is anti-Bush, however, as there is no guarantee that a different President in office would not have done exactly the same
International Regulation of Tourism in Antarctica Since the mid-1980s, Antarctica has been an increasingly popular tourist destination, despite the relative danger of visiting the largest, least explored -- and arguably least understood -- continent on earth. Beginning with the 1959 treaty establishing Antarctica as an international zone free of claims of sovereignty by nation's that had been instrumental in establishing research stations there, there has been almost constant negotiation about how