Kamis, 14 Juni 2012

global warming


·         WHAT IS GLOBAL WARMING - GLOBAL WARMING ISSUES
 Articles About Global Warming - Global Warming or if in the Indonesian language is called global warming is a process of rising temperatures that occur in the atmosphere, ocean or on land earth. According to several studies have been conducted, the average air temperature at the surface of the Earth during the last 100 years has risen 0.74 ° C ± 0:18 (1:33 ± 0:32 ° F).
·         CAUSE OF GLOBAL WARMING
 There are some that become the cause of global warming on earth. Humans, including one of the causes of global warming / global warming. Why humans are also one of the causes of global warming? The answer is because humans have increased the amount of carbon dioxide released into the atmosphere when they burn fossil fuels, solid waste, and wood to heat buildings, power vehicles and generate electricity. Why, what is the connection between humans and carbon dioxide? Humans inhale oxygen during breathing and releasing it in the form of carbon dioxide. While carbon dioxide is one of the factors that cause greenhouse gases is the cause of Global Warming that we shall discuss below. Therefore we need to plant is to reduce the impact of Global Warming / Global Warming. Because of herbs / plants can absorb carbon dioxide as the photosynthesis process. Photosynthesis split carbon dioxide and release oxygen into the atmosphere and take the carbon atom.




Below we will explain in detail about Global Warming Causes of Occurrence / Global Warming that I quote from Wikipedia:
1. Greenhouse Effect
All energy sources that exist on Earth comes from the Sun. Most of the energy in the form of short-wave radiation. When this energy arrives Earth's surface, it turns into heat that warms the Earth. Earth's surface, will absorb some heat and reflecting back the rest. Much of this heat is tangible long-wave infrared radiation into space. But some of the heat remains trapped in Earth's atmosphere due to accumulated amount of greenhouse gases such as water vapor, carbon dioxide, sulfur dioxide and methane which trap this radiation. These gases absorb and reflect radiation emitted wave and consequently the Earth's heat is stored in the Earth's surface. This situation occurs continuously, resulting in an annual average temperature of the earth continues to increase. The greenhouse effect is needed by all living things on earth, because without it, the planet will be very cold. With an average temperature of 15 ° C (59 ° F), the earth actually has more hot 33 ° C (59 ° F) from the original temperature, if there is no greenhouse effect the Earth's temperature is only -18 ° C so that the ice would cover the entire Earth's surface. However, on the contrary, if these gases in the atmosphere has been excessive, will cause global warming.
2. Feedback  effects
Causes of global warming are also influenced by various feedback processes that result. An example is the evaporation of water. In the case of warming due to increasing greenhouse gases such as CO2, warming will initially lead to more amount of water that evaporates into the atmosphere. Because water vapor is itself a greenhouse gas, warming will continue and increase the amount of water vapor in the air until it reaches an equilibrium concentration of water vapor. The resulting greenhouse effect is greater than the effect of CO2 alone. This feedback effect only gradually because CO2 has a long age in the atmosphere.Feedback effects due to the influence of clouds is the object of current research. When viewed from below, clouds will reflect infrared radiation back to the surface, thereby increasing the heating effect. In contrast when viewed from above, clouds will reflect sunlight and infrared radiation to space, thereby increasing the cooling effect. Whether the net effect produce heating or cooling depending on some specific details such as the type and height of these clouds.Another important feedback is the loss of the ability to reflect light (albedo) of ice. As global temperatures increase, ice near the poles melts at an ever increasing. Along with the melting of the ice, land or water below it will open. Both land and water has the ability to reflect light much less when compared to the ice, and consequently will absorb more solar radiation. This will increase the heating and causing even more ice melts, it becomes a continuous cycle.Positive feedback due to release of CO2 and CH4 from the softening of frozen ground (permafrost) are other mechanisms that contribute to warming. In addition, the melting ice will also cause release of CH4 are also positive feedback.The ability of oceans to absorb carbon will also be reduced if it warms up, this is caused by reduced levels of nutrients in the zone and limit the growth of diatoms Mesopelagic than phytoplankton is low carbon sinks.
3. Variation of the Sun
There is a hypothesis which states that the variation of the Sun, with a possibility reinforced by feedback from the clouds, can contribute to warming. Difference between the heating mechanism is due to the greenhouse effect is the increased activity of the Sun would heat the stratosphere reverse the greenhouse effect cools the stratosphere. There is some research that states that the contribution of the Sun may have been overlooked in global warming. Two scientists from Duke University estimated that the Sun may have contributed to 45-50% increase in average global temperature over the period 1900-2000, and about 25-35% between 1980 and 2000. Stott and colleagues suggests that climate models are used as guidelines now make exaggerated estimates of the effects of greenhouse gases compared with the influence of the sun, they also suggest that the cooling effects of volcanic dust and sulfate aerosols have also been underestimated. Nevertheless, they concluded that by increasing the sensitivity of climate to influence sun though, most of the warming that has occurred in recent decades is caused by greenhouse gases. In 2006, a team of scientists from the United States, Germany and Switzerland stated that they did not find any increase in the level of "explanation" of the Sun in a thousand years. Solar cycle only a small increase of 0.07% in the "statement" for 30 years. This effect is too small to contribute to global warming. A study by Lockwood and Fröhlich found no relation between global warming and solar variability since 1985, both through the variation of solar output or variations in cosmic rays.
·         EFFECTS OF GLOBAL WARMING / DANGER GLOBAL WARMING
Clean water is scarce (only 20% of the world that can get it). More frequent storms, new diseases emerge, we have lost more than 1000 species in a short time, the polar ice melts and sea levels rise, and many more ..
·         HOW GLOBAL WARMING ERADICATE
Turn off the electricity. (when not in use, do not leave electronic equipment on standby. Unplug phone chargers. handful of outlets. Although electricity is not carbon emissions, electricity generation using fossil fuel emissions a major contributor). Replace light bulb (CFL all types, according to electric power. Although the price is rather expensive, is more power-efficient light and durable). Clean light (dust can reduce light levels up to 5%). If forced to use the AC (close doors and windows for air conditioning is on. Set the temperature is sufficiently cool, around 21-24o C). Use a timer (for AC, microwave, oven, magic jar, etc.). Switch the engine waste heat air conditioner to operate water-heater. Planting trees in your neighborhood. Drying clothes outside. Wind and solar heat is better than using the machine (dryer) a lot of carbon emissions. Use public transportation (to reduce air pollution). Efficient use of paper (raw materials derived from wood). Say no to plastic. Almost all plastic waste produces harmful gases when burned. Or you can also help collect them for recycling back. Spread the word to the people around you, so that they are participating in saving the planet.
·         GLOBAL WARMING IN INDONESIA
 The impact of global warming / global warming in Indonesia include the change of seasons in which the dry season becomes longer, causing crop failures, water crisis and forest fires. Another effect is the loss of many species of flora and fauna, especially in Indonesia which has a variety of species such as coral bleaching of 30 percent or as much as 90-95 percent of coral died in the Thousand Islands due to rising sea temperatures. In addition, the study of the Meteorology and Geophysics Agency said in February 2007 was a period with high rainfall intensity during the last 30 years in Indonesia. This indicates that climate change caused by global warming. Indonesia is located on the equator, is the very first country that will feel the impact of climate change. The impact has been felt that in 1998 became the year with the hottest temperatures and increasing in subsequent years. 2070 is estimated at about 800 thousand homes are located on the coast had to be moved and as many as 2,000 of 18 thousand islands in Indonesia will be submerged due to rising sea water.

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