A global, three-dimensional computer model of the climate system; GCM's are highly
complex and they represent the effects of such factors as reflective and
absorptive properties of atmospheric water vapor, greenhouse gas
concentrations, clouds, annual and daily solar heating, ocean
temperatures and ice boundaries. The most recent GCM's include global
representations of the atmosphere, oceans, and land surface.
They are often used to model the effects of human induced climate change into the future; but the accuracy of the models are highly dependent upon:
Heat energy from within the earth. Often extracted as steam to either produce electricity or heat buildings.Search the Web for Geothermal Energy
A Geothermal heat pump is the pump system used in a ground heat transfer system to heat a property using the latent heat in the earth.Search the Web for Geothermal Heat Pump
Goddard Institute of Space Studies – a US NASA unit.Search the Web for GISS
A multi-year surplus accumulation of snowfall in excess of snowmelt on land and resulting in a very large mass of ice.Search the Web for Glacier
The balance of the exchanges (incomes and losses) of carbon between the carbon reservoirs or between one specific loop (e.g., atmosphere biosphere) of the carbon cycle. An examination of the carbon budget of a pool or reservoir can provide information about whether the pool or reservoir is functioning as a source or sink for CO2.Search the Web for Global Carbon Budget
The average of the sea temperature in the first few meters of the oceans
and the temperature 1.5 m above ground on land surfaces.
Note: This is very subjective, the method of calculation and extrapolation to synthesis temperature for regions where there is scant direct temperature measurement (such as at the Poles), varies a lot.
A multi-year surplus accumulation of snowfall in excess of snowmelt on land and resulting in a very large mass of ice.Search the Web for Global Warming
The GWP is the ratio of the warming caused by a substance to the warming caused by a similar mass of carbon dioxide. Thus, the GWP of CO2 is defined to be 1.0 . CFC-12 has a GWP of 8,500, while CFC-11 has a GWP of 5,000.Search the Web for Global Warming Potential
See definition of e-waste.Search the Web for Gluten
Gluten Free refers to food or a diet which has a greatly reduced amount of Gluten in it. It may indeed be totally gluten free but it practice this is usually very hard to achieve as gluten is found in so many off the shelf foods and ingredients - often not directly referred to in the labeling.
The exact level at which gluten is harmless is uncertain and controversial. A recent systematic review tentatively concluded that consumption of less than 10 mg of gluten per day is unlikely to cause histological abnormalities, although it noted that few reliable studies had been done.
Also exactly what the label gluten-free actually means on food varies markedly by country.
Going green refers to action that can be taken to consciously curb harmful effects on the environment through consumer habits, behavior, and lifestyle.
Green Architecture refers to the process of designing a building to have a reduced environmental impact either by reusing existing materials or using new materials in a lower impact way. Green architecture also focuses on reducing the ongoing energy consumption of the building.
Note: This does not mean than an existing building cannot be made more Green, rather it encompasses making sensible use of what is preexisting in a way that is more Green. Often reusing a building than completely removing it can have a dramatic positive impact on reducing environmental impact over the longer term.
Green building (also known as green construction or sustainable building) is the practice of creating structures and using processes that are environmentally responsible and resource-efficient throughout a building's life-cycle: from siting to design, construction, operation, maintenance, renovation, and final deconstruction.
This practice expands and complements the classical building design concerns of economy, utility, durability, and comfort.
A green Christmas is where the celebration of Christmas is done in such a way that the presents & gifts, the party, the dinner, food and venue are all chosen to minimize environmental impact.Search the Web for Green Christmas
Green Finance is money that is provided to fund Green Projects and is often supplied by a dedicated Green Fund or business. The idea being that the money is put to good use on Green causes and any profit made is then further spent on other Green Projects.Search the Web for Green Finance
A 'green house' used to just refer to a building with lots of glass designed to trap heat for the purpose of growing plants. Nowadays it also refers to a home that has been specially designed to follow 'green' design principals by reducing energy consumption and damage to the environment.Search the Web for Green House
A green roof is a conventional roof covered with a layer of vegetation, also known as “living roofs”. Green roofs serve several purposes for a building, such as absorbing rainwater, providing insulation, creating a wildlife habitat and helping to lower urban air temperatures and combat the urban heat island effect. There are two types of green roofs: intensive roofs, which are thicker and can support a wider variety of plants but heavy and require ongoing maintenance, and extensive roofs, which are covered in a light layer of vegetation and are lighter than an intensive green roof.Search the Web for Green Roof
Green Technology is Technology which is either itself considered green by its design or its intended purpose.
A multi-year surplus accumulation of snowfall in excess of snowmelt on land and resulting in a very large mass of ice.Search the Web for Greenhouse Gas
Greenwashing is a superficial nod to the environment that marketers and businesses that historically were not interested in sustainable concerns, are doing in order to improve their public relation standings with the consumer or public. Analogous to brainwashing. Don't be fooled by dishonest companies employing greenwashing techniques.Search the Web for Greenwashing
Grid connected refers to a solar panel electrical system which is connected to the mains power grid, so any excess power it generates can be fed back into the mains power grid. The owner of the solar panel system can often earn 'credits' for feeding in such power.Search the Web for Grid Connected
These heat pumps are underground coils to transfer heat from the ground to the inside of a building.Search the Web for Ground Source Heat Pump
A current of warm ocean water that flows from the Gulf of Mexico to the coasts of Europe, providing heat that keeps Europe warmer in winter than regions of North America at the same latitude.Search the Web for Gulf Stream