| 释义 |
greenhouse effect
 greenhouse effectEnergy radiated by the sun converts to heat when it reaches the earth. Some heat is reflected back through the atmosphere, while some is absorbed by atmospheric gases and radiated back to the earth.greenhouse effectn. A phenomenon in which the atmosphere of a planet traps radiation emitted by its sun, caused by gases such as carbon dioxide, water vapor, and methane that allow incoming sunlight to pass through but retain heat radiated back from the planet's surface.greenhouse effect n 1. (General Physics) an effect occurring in greenhouses, etc, in which radiant heat from the sun passes through the glass warming the contents, the radiant heat from inside being trapped by the glass 2. (Physical Geography) the application of this effect to a planet's atmosphere; carbon dioxide and some other gases in the planet's atmosphere can absorb the infrared radiation emitted by the planet's surface as a result of exposure to solar radiation, thus increasing the mean temperature of the planet green′house effect`
n. heating of the atmosphere resulting from the absorption by certain gases of solar energy that has been captured and reradiated by the earth's surface. ![]() green·house effect (grēn′hous′) The trapping of the sun's radiation in the Earth's atmosphere due to the presence of greenhouse gases.greenhouse effect1. The term given to the heating of the Earth’s surface caused by infrared radiation trapped in the atmosphere.2. Alleged human-made atmospheric warming by accumulating gases trapping solar heat below them rather like a greenhouse roof. See greenhouse gases.Thesaurus| Noun | 1. |  greenhouse effect - warming that results when solar radiation is trapped by the atmosphere; caused by atmospheric gases that allow sunshine to pass through but absorb heat that is radiated back from the warmed surface of the earthgreenhouse warmingatmospheric phenomenon - a physical phenomenon associated with the atmosphere |
Translationsgreen (griːn) adjective1. of the colour of growing grass or the leaves of most plants. a green hat. 綠色的 绿色的2. not ripe. green bananas. 未熟的 未熟的3. without experience. Only someone as green as you would believe a story like that. 無經驗的 无经验的4. looking as if one is about to be sick; very pale. He was green with envy (= very jealous). 蒼白的 苍白的 noun1. the colour of grass or the leaves of plants. the green of the trees in summer. 綠色 绿色2. something (eg paint) green in colour. I've used up all my green. 綠色物(如顏料) 绿色颜料3. an area of grass. a village green. 綠地 草地，绿地 4. an area of grass on a golf course with a small hole in the centre. 高爾夫球場果嶺 高尔夫球场果岭（球洞四周草地修得很平整的地区） 5. concerned with the protection of the environment. green issues; a green political party. 支持環保的 主张保护环境的ˈgreenish adjective close to green. a greenish dress. 近似綠色的 略呈绿色的greens noun plural green vegetables. Children are often told that they must eat their greens. 蔬菜 蔬菜ˈgreenfly – plural ˈgreenfly – noun a type of small, green insect. The leaves of this rose tree have been eaten by greenfly. 蚜蟲 蚜虫ˈgreengage (-geidʒ) noun a greenish-yellow type of plum. 青梅 青梅ˈgreengrocer noun a person who sells fruit and vegetables. 蔬菜水果商 蔬菜水果商ˈgreenhouse noun a building usually of glass, in which plants are grown. 溫室 温室ˈgreenhouse effect noun (singular) the gradual heating of the atmosphere caused by air pollution which traps energy from the sun. 溫室效應 温室效应the green light permission to begin. We can't start until he gives us the green light. 同意開始 赞同，同意 greenhouse effect
greenhouse effect: see global warmingglobal warming,
the gradual increase of the temperature of the earth's lower atmosphere as a result of the increase in greenhouse gases since the Industrial Revolution. Global warming and its effects, such as more intense summer and winter storms, are also referred to as climate
..... Click the link for more information. .greenhouse effect A phenomenon in which a rise in temperature is caused because incoming radiation at certain wavelengths can pass through a barrier, be absorbed, and then re-emitted as radiation at longer wavelengths, which is absorbed by the barrier. In a glass greenhouse, solar radiation in the form of visible and (some) ultraviolet radiation is able to pass through the Earth's atmosphere and through the glass of the greenhouse. The radiation is absorbed by any surface it falls on, causing a rise in temperature. As a result these surfaces emit heat radiation (i.e. electromagnetic radiation in the infrared), which is absorbed by the glass, causing an overall increase in temperature inside the greenhouse. The analogous process occurs for a planet with the ‘glass' being the planet's atmosphere. On Earth, for example, the atmosphere allows visible and ultraviolet through, but certain gases in the atmosphere absorb strongly in the infrared. These so-called greenhouse gases include water vapor (the main greenhouse gas), carbon dioxide, and methane. The greenhouse effect is not a bad thing – it is essential for keeping the Earth warm enough to support life. However, in recent times environmentalists have become concerned about the phenomenon of global warming, i.e. an increase of 0.3–0.6°C in the average temperature of air at the Earth's surface since the late 19th century. This could be a part of a natural cycle (essentially the end of the last ‘Little Ice Age’), but there is evidence that this global warming could be the result of the greenhouse effect. The main suspect is carbon dioxide. The concentration of carbon dioxide in the atmosphere has risen by 25–30 % over the last 200 years as a result of human activity – deforestation and the burning of fossil fuels (coal, oil, and natural gas). Levels of methane in the atmosphere have also doubled in the last 100 years. There is a fear that an excess of greenhouse gases in the atmosphere will heat the planet too much and adversely affect weather patterns. A runaway greenhouse effect is responsible for the high surface temperature of Venus, where no water exists and life is impossible. A greenhouse effect also operates in the deep atmospheres of the giant planets and on Saturn's large satellite Titan.Greenhouse effectThe steady, gradual rise in the temperature of the earth’s atmosphere due to the heat that is retained by layers of ozone, water vapor and carbon dioxide.Greenhouse Effect the atmosphere’s property of transmitting solar radiation while holding back terrestrial radiation, thereby contributing to the accumulation of heat by the earth. The atmosphere is comparatively quite transparent to shortwave solar radiation, which is almost entirely absorbed by the earth’s surface, since the albedo of the surface is generally low. The surface of the earth heats up by absorbing solar radiation and becomes a source of terrestrial, chiefly longwave, radiation. The atmosphere does not transmit this radiation very well and, in fact, almost completely absorbs it. Because of the greenhouse effect, when there is a clear sky only about 10–20 percent of the terrestrial radiation is able to pass through the atmosphere into outer space. REFERENCEKondrat’ev, K. Ia. Luchistyi teploobmen v atmosfere. Leningrad, 1956.greenhouse effect[′grēn‚hau̇s i‚fekt] (meteorology) The effect created by the earth's atmosphere in trapping heat from the sun; the atmosphere acts like a greenhouse. greenhouse effect1. an effect occurring in greenhouses, etc., in which radiant heat from the sun passes through the glass warming the contents, the radiant heat from inside being trapped by the glass 2. the application of this effect to a planet's atmosphere; carbon dioxide and some other gases in the planet's atmosphere can absorb the infrared radiation emitted by the planet's surface as a result of exposure to solar radiation, thus increasing the mean temperature of the planet greenhouse effect
greenhouse effectPlanetary warming as a result of the trapping of solar energy beneath atmospheric gases. The composition and concentration of the gases in the atmosphere influence the earth's surface temperature because some gases more effectively retain heat than others. Fossil fuel combustion, which has increased at a rapid rate since the 1950s, has deposited increasing amounts of carbon dioxide in the upper atmosphere. This is thought to be a contributory factor in global warming, a phenomenon suspected of having widespread effects on all ecosystems. See: global warming; ozonegreenhouse effect The progressive earth-heating effect resulting from the transparency of the atmosphere to sun (solar) radiation at high frequencies and its relative opacity to energy re-radiated by the earth at a lower, less penetrative, frequency. Water vapour and carbon dioxide are the main elements concerned, and any increase in these, mainly from the burning of fossil fuels, enhances the heating effect. A rise in surface temperature could melt polar ice and cause widespread flooding.greenhouse effect - an effect occurring in greenhouses in which the glass transmits short wavelengths but absorbs and re-radiates longer wavelengths, thus heating the interior.
- the application of this effect to the earth's atmosphere. Infrared radiation tends to be trapped by carbon dioxide and water vapour in the earth's atmosphere and some of it is re-radiated back to the earth's surface.
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Related to greenhouse effect: Greenhouse gases, global warmingSynonyms for greenhouse effectnoun warming that results when solar radiation is trapped by the atmosphereSynonymsRelated Words |