IA Science Module Long Paper

IA Science Module Long Paper - Danielle Duchesne Professor...

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Danielle Duchesne Professor Rock, IA401 12/1/2009 Humans are Responsible for Climate Change I. Topic Statement Changes in human activity are the main causes for the current drastic changes of the global climate. The public needs to accept that we are responsible for the drastic changes of the earth in order to start a movement to halt and possibly reverse our effects on the planet. Using data monitoring the various drivers of climate change, it has been observed that there are natural global cycles of these drivers and using these trends, it is possible to conclude that humans are the cause of this dynamic change over the global climate. II. Introduction All natural occurrences undergo cycles, including the factors that are capable of altering the climate. The main heat-forcing climate drivers are the sun’s energy and heat trapping emissions (Rock 2009). These heat trapping emissions are also cyclical, even as they are greatly affected by human activity. This dangerous combination of natural highs and lows with the addition of human activity is creating the largest figures in record-backed history. The sun’s energy is a contributing factor to the earth’s natural fluctuation in temperature. Records dating back to the seventeenth century exhibit that the sun goes through a regular cycle of about eleven years where in that time frame we experience a solar maximum where the sun’s energy is particularly high and many sunspots occur, and a solar minimum where the sun’s energy is particularly low and there are very few sunspots. Presently, the earth is experiencing a prolonged solar minimum so
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Danielle Duchesne Professor Rock, IA401 12/1/2009 that, all things equal, we should be experiencing a slightly cooler average global temperature. However, we are currently experiencing an increase in temperature, which goes against what should be occurring during a period of solar minimum (Rock 2009). Carbon dioxide is the other main contributing factor to the earth’s warming that has its own natural cycle. Data collected from ice coring in Antarctica has revealed a recordable history of carbon dioxide concentration dating 650,000 years back. This large stretch of time has revealed that carbon dioxide has a natural cycle of about one hundred thousand years. Also observed is exactly how the concentration changes within a particular individual cycle. Within each period, the concentration of carbon
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This note was uploaded on 03/06/2012 for the course IA 401 taught by Professor White during the Fall '08 term at New Hampshire.

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IA Science Module Long Paper - Danielle Duchesne Professor...

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