IntroductionThe greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases. Solar radiation at the frequencies of visible light largely passes through the atmosphere to warm the planetary surface, which then emits this energy at the lower frequencies of infrared thermal radiation. Infrared radiation is absorbed by greenhouse gases, which in turn re-radiate much of the energy to the surface and lower atmosphere. The mechanism is named after the effect of solar radiation passing through glass and warming a greenhouse, but the way it retains heat is fundamentally different as a greenhouse works by reducing airflow, isolating the warm air inside the structure so that heat is not lost by convection What is Green House Effect ? The name "Green-house effect" comes from the fact that this effect is use in horticulture for the up bringing of green plant's in small house made of glass walls and glass root. The green walls and roofs of a green-house allows the sun-light to come in freely but it does not allows the long wavelength infrared radiations reflected by the soil, plants and other contents of green house to go out. These trapped intra-red rays show their heating effect due to which the temperature is raised inside the green house. Thus, even without an external supply of heat, the temperature inside a green house is found to be higher than it is outside. Thus, green house acts as a heat trap. Due to the presence of carbon dioxide, our atmosphere acts like the glass rat of an ordinary horticultural green-house. Origin of the term:The term ‘greenhouse effect’ is named by analogy to greenhouses. Greenhouses are basically built with materials like glass or plastic because these materials trap the radiation from the sun and help heat the surface inside the greenhouse. Greenhouses are mostly built up in places having temperature lower than the normal, such as the places at high altitudes, thus aids the growth of the seedlings required for vegetation and also planting. Objective 1: Minimise Greenhouse Gas Emissions There is overwhelming scientific evidence that human-induced greenhouse gas emissions are responsible for increasingly unstable weather patterns, overall global warming, declining ice levels, rising sea levels and increased ocean acidification. Objective 2: Minimise Natural Resource Consumption wasteful use of natural resources creates additional environmental burdens associated with the creation of waste which must be treated or disposed of, creating additional environmental impacts. Objective 4: Minimise other adverse impacts to the environmentUnless sound practices are followed, there is potential during the construction process for nuisance to surrounding neighbours which include noise and vibration, dust and pollution of waterways. Objective 5: Seek opportunities to enhance or restore to the environmentDevelopment provides an important opportunity to enhance the natural environment. This includes using the development as a lever to remediate or otherwise enhance the value of land. Objective 7: Maximise sustainability research and learning opportunities As an educational institution, UTS has both a responsibility and a powerful opportunity to harness the opportunities for learning about sustainable building associated with the implementation of the City Campus Master Plan, and to promulgate these learnings within the construction industry and wider community. The Greenhouse Effect and its importance
The greenhouse gases act like a blanket, preventing much of the heat reflected by the earth's surface from escaping directly into space. By slowing the release of cooling radiation, these gases...
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