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Friday, November 16, 2012

The Importance of Relying On Facts

Global warm up is a phenomenon of increasing atmosphericalal temperatures on the earth (Kaw and Batra). Natural orbicular warming has occurred throughout history as a event of warming and cooling cycles on various time scales. The frost ages are one such example, leading to long-term chilly periods interspersed with warming periods that convey resulted in temporary tropical climates o'er large landmasses. Smaller dips and sneaks in temperature are also seen, l`sting decades or centuries. Some of these short-term cold periods have been termed "little ice ages" and are also followed by warming periods on a shorter time scale.

slice variations in the earth's temperature are a natural occurrence and may be self-sustaining of human activities, the phenomenon the public thinks of as "global warming" is non this natural variation but instead warming caused by human actions, especially those beginning at the turn of the furthermost century with the inception of the Industrial Age. Since this time, humans have been evacuant gases into the atmosphere in profit to the same gases that are by nature present, namely additions of carbon dioxide, methane, nitrous oxides, and other trace gases (Kaw and Batra). While these gases are already a part of the atmosphere, production of excess quantities from human activities, especially the burning of fossil fuels such as oil and coal, has contributed amounts in excess of what would otherwise be present. The


Recent findings indicate that some earlier climate estimates have been exaggerated. For example, climate models and selective information from the 1990's bespeaked that the atmospheric temperature would initiation as much as 10?C by 2010 (Kaw and Batra). Current estimates now extend the time for this potential rise to 2100 ("Pollution fights?").
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Factors that may affect such predictions include the data fed into the models, which may be based on preconceptions and estimates alternatively than observed data, as well as biases of scientists who may preferentially receive grants that support status quo conceptions about global warming's cast out issues (Kaw and Batra). Additionally, the effects of water vapor on atmospheric warming, which may create a positive feedback loop that could greatly enhance the warming phenomenon, have been poorly quantified in models (" get?").

In attributing climate changes to human-induced global warming, it is important to rely on factual data and qualify the assumptions and accuracy of climatologic models used to predict changes. Not doing so may threaten the integrity of policies.

creative activity of these additional gases has been posited as a cause of a original trend of rising temperatures seen over the past century. These gases, in addition to water vapor, prevent radiant heat from the earth's surface from escaping, as would be the case on say, the moon, which lacks such gases. The tendency of the earth's atmospheric gases to trap heat is a necessary phenomenon for the existence of aliveness on earth, which depends on the warmth that this natural greenhouse effect provides. However, an excessive "greenhouse gas" effect (so-called for the likeness of this attitude to a greenhouse trapping heat) is posited to lead to accelerat
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