Care Form Health Massachusetts Proxy

Introduction to global warming:

the greenhouse effect has existed for some time, probably since the Earth was formed. greenhouse gas emissions, gas or conducive to the greenhouse effect, act like a blanket or a greenhouse window in the wall: it reflects the heat of the earth would radiate into space back down to earth , holding in. You see, the balance of heat on the ground is held by different processes. Solar radiation approaches the earth, clouds and atmosphere to reflect some of them in space. More radiation is absorbed by the atmosphere, clouds and the surface of the earth. Then the earth radiates heat into infrared radiation. To maintain a certain constant temperature, the rate that the earth radiates energy into space must be equal to the rate it absorbs energy from the sun. The refusal of the greenhouse to allow a certain amount of terrestrial radiation to pass maintains the temperature of the Earth's surface an average of about 60 ° F (15 ° C). If there were no greenhouse gases in the atmosphere, most of the heat radiated by the Earth's surface would be lost directly to the outer space and the global temperature should be 0 ° F (-18 ° C), too cold for most life forms (greenhouse).

There are several atmospheric gases which act as greenhouse gases (GHGs). The most notorious is the carbon dioxide that is emitted by all living humans and animals, the burning of fossil fuels, deforestation and other changes in land use. Carbon dioxide is the main goal of many greenhouse gas sanctions, because it is the main greenhouse gas that has most been released into the atmosphere. However, some other gases can have a greater effect on climate than CO2. If one examines the research on possible warming effect of other greenhouse gases relative to CO2, we see that over 100 years ago gases present in much smaller quantities that have a much more concentrated . The methane gas produced by livestock (flatulence), production of oil and gas, coal mining, solid waste, and agriculture of upland rice has 11 times more warming potential than CO2 unit volume (Science), or 25 times more per molecule (Clarkson). Nitrous oxide, produced mainly in relation to current agricultural practices, has 270 times more warming potential by volume during this period that CO2 (Science). Chlorofluorocarbons (CFCs), gases used as refrigerants and in aerosol dispensers which were banned some time ago because of their potential depletion of the ozone layer, have more potential in the 3400-7100 time warming than CO2 volume (Science). Hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs), substitutes for CFCs have a global warming slightly smaller at 1200-1600 times greater than CO2 per unit volume (Science).

And if, as one might deduce, studies show that the additions of greenhouse gases may cause the earth to get warmer than it would naturally. This is referred to as anthropogenic (human) global warming. Several times, warming, global conditions and climate change are used interchangeably. (We'll do the same thing, because of continuity.) But this is not correct and the concepts are different. Climate change includes precipitation, winds and temperature. It also refers to any climate, not only the weather of a place. Global warming is an indication of climate change. It is an example of a climate change that has increased the average temperature of the atmosphere. The Earth has been warming and much much more cooling throughout its history. There is much debate as to whether or not the earth is experiencing a climate change and global warming, if it is, if the underlying causes are human induced or natural. Different studies have yielded different results.

However, even if greenhouse gas emissions were probably at a stable level, before the beginning of the industrial revolution, the Earth's climate tends to fl.