greenhouse effect ,5 points plz~~~~~~
greenhouse effect 14th January 前交俾我plz~~~~~~~~~~~
- 1 decade agoFavorite Answer
Looks back into humanity's history, the Earth climate vicissitude gets up from the many year natural event's occurrence. But today, humanity's activity actually and affects the Earth climate seriously immediately, the greenhouse gas discharges in rapidly the atmosphere, these gas seized should send out in the outer space the heat, caused the original greenhouse effect to strengthen, has caused the Earth average temperature rise, or so-called global warm phenomenon. The global temperature's rise can cause the sea level to elevate, the change rainfall amount and certain local climate. The regional climatic change will change the forest, the agriculture to attain the quantity and the water supply and threatens the human body health, the harm birds, the fish even other more ecological systems. Perhaps the desert will expand to the extant plain, but some country park's unique picture will vanish the danger unexpectedly. At present the scientists were unable to determine these places will still become drier or are moister, but the whole looks like, as if faces the rainfall amount and the transpiration rate increases, a more intense storm as well as the drier land tendency.
Certain greenhouse gas exists naturally in the atmosphere, including steam, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and ozone. However as a result of humanity's activity, increased these greenhouse gas density. When combustion solid reject, fossil fuel (petroleum, natural gas, coal and so on), lumber and woodware, the carbon dioxide namely discharges to the atmosphere in; In the production and the transportation coal, the natural gas and the petroleum process namely will discharge the methane, trash will bury when the field organic matter decomposition as well as raising livestock, also will discharge the methane; The nitrous oxide emissions, comes from the agriculture and the industry activity, as well as combustion solid reject and fossil fuel result.
As for must is the nature existence the greenhouse gas includes, the foaming system regulation, the refrigerator, the air conditioner sideline product of and so on, namely knows fluorine chlorine carbide (CFCs) and hydrofluorination carbon (HFCs) as well as produces perfluorocarbons (PFCs) by the industry system regulation
Each greenhouse gas seizes in the atmosphere steam ability to be different. HFCs and PFCs hold the hot ability to be biggest; The methane absorption's heat surpasses the carbon dioxide absorption 21 times; But the nitrous oxide absorbs the heat compares many 270 times which the carbon dioxide absorbs. Estimates the greenhouse gas withdrawal often take 1,000,000 metric ton carbon equivalents (millions of metric tons of carbon equivalents, MMTCE) as the unit, i.e. (Global Warming Potential) calculates it by its GWP value.
2008-01-07 14:12:10 補充：
- Anonymous1 decade ago
The “Greenhouse Effect” is a term that refers to a physical property of the Earth's atmosphere. If the Earth had no atmosphere, its average surface temperature would be very low of about -18℃ rather than the comfortable 15℃ found today. The difference in temperature is due to a suite of gases called greenhouse gases which affect the overall energy balance of the Earth's system by absorbing infra-red radiation.
Due to greenhouse gases, the atmosphere absorbs more infrared energy than it re-radiates to space, resulting in a net warming of the Earth-atmosphere system and of surface temperature. This is the “Natural Greenhouse Effect”.
- busterLv 61 decade ago
The greenhouse effect is the process in which the emission of infrared radiation by the atmosphere warms a planet's surface. The name comes from an incorrect analogy with the warming of air inside a greenhouse compared to the air outside the greenhouse. The Earth's average surface temperature of 15 °C (59 °F) is about 33 °C (59 °F) warmer than it would be without the greenhouse effect. The greenhouse effect was discovered by Joseph Fourier in 1824 and first investigated quantitatively by Svante Arrhenius in 1896. Global warming, a recent warming of the Earth, is believed to be the result of increased concentrations of greenhouse gases in the atmosphere. In addition to the Earth, Mars and Venus have greenhouse effects.