Definitions - i

Capacity factor is a ratio (usually expressed as a percentage) of power actually generated by an installed wind turbine compared to its theoretical maximum power output.

This is important as the available wind varies considerably by location and you want to pick a location that ensures maximum utilization. Although typically the maximum capacity factor achieved in practice is around 30%. This can be compared to the typical capacity factors of 15% for solar and nuclear which ranges in 60 to 100%. Base load thermal power plants (i.e. fire fired) often achieve 70 to 90%.

When capacity factor is combined with cost of production you get the effective cost of power production for a given energy producing technology; i.e. cost divided by capacity factor. This figure you can use as a basis for a ROI (Return on Investment) comparison.

A thick mass of ice extending from a polar shore. The seaward edge is afloat and sometimes extends hundreds of miles into the sea.

Adverse effects on the normal functioning of the immune system, caused by exposure to a toxic chemical. Changes in immune function could produce higher rates of infectious diseases or cancer, or more severe cases of those diseases. Immunotoxic chemicals can also cause auto-immune disease or allergic reactions.

Refers to a surface that promotes storm water runoff instead of infiltration into the ground.

Light that shines onto the face of a solar cell or module.

A treatment technology involving destruction of waste by controlled burning at high temperatures; e.g., burning sludge
to remove the water and reduce the remaining residues to a safe, non-burnable ash that can be disposed of safely on land, in some waters, or in underground locations.

An unseasonably warm spell with clear skies near the middle of autumn. Usually follows a substantial period of cool weather.

The supply and introduction of adequate air for ventilation and control of airborne contaminants, acceptable temperatures and relative humidity.

A variable speed multi-pole electric generator.

Leakage of ground water into a sewage collection system.

The heat energy that is emitted from all solids, liquids, and gases. In the context of the greenhouse issue, the term refers to the heat energy emitted by the Earth's surface and its atmosphere. Greenhouse gases strongly absorb this radiation in the Earth's atmosphere, and re-radiate some back towards the surface, creating the greenhouse effect.

Made from plant sugars from corn. Firstly the sugar is fermented, then transformed into a polymer called polylactide.

1. Bacteria or fungi injected into compost to start biological action.
2. A medium containing organisms, usually bacteria or a virus, that is introduced into cultures or living organisms.

Climate Science is the study of the behaviour of the climate using scientific techniques to discover provable processes and actions within the climate and hence be able to:

Solar Power refers to the act of using the Sun's energy to produce a power source, usually in the form of electricity. This is usually done using solar panels, although it can also be done using a solar mirror/concentrator to heat water to steam to power a turbine.

Insulating walls may use light but effective insulating materials such as fiberglass batts, strawbale or foam; or from heavier materials which have the benefit of good thermal mass, storing heat or coolness, e.g. stone, or earth construction, or insulating concrete forms.

Materials that are able to adapt to their environment by altering their properties. Examples of intelligent materials include liquid crystal glass which changes from transparent to opaque upon application of a current, and thermo-chromic glazing that changes transparency in response to ambient temperatures.

Intercropping is the practice of growing two or more crops in close proximity. The most common goal of intercropping is to produce a greater yield on a given piece of land by making use of resources that would otherwise not be utilized by a single crop. Careful planning is required, taking into account the soil, climate, crops, and varieties. It is particularly important not to have crops competing with each other for physical space, nutrients, water, or sunlight. Examples of intercropping strategies are planting a deep-rooted crop with a shallow-rooted crop, or planting a tall crop with a shorter crop that requires partial shade.

Solar Power refers to the act of using the Sun's energy to produce a power source, usually in the form of electricity. This is usually done using solar panels, although it can also be done using a solar mirror/concentrator to heat water to steam to power a turbine.

Climate Science is the study of the behaviour of the climate using scientific techniques to discover provable processes and actions within the climate and hence be able to:

Climate Science is the study of the behaviour of the climate using scientific techniques to discover provable processes and actions within the climate and hence be able to:

A Carbon Tax is a government imposed taxation on source goods and services in an attempt to reduce the production of carbon into the atmosphere.

Usually implemented as a form of 'at source' taxation; i.e. those whom manufacturer or consume the most carbon pay and everybody else on the supply chain picks up the price increase. This is often encountered with a carbon credit scheme, by which carbon producers can 'offset' their taxable carbon emissions against less carbon intense production methods.

As always with such schemes, the devil is in the detail; in particular there has been problems in the past with carbon fraud.

Note: This equally applies to the energy production sector as basic manufacturing; say if coal is being used as a source of electrical power.

The direct, diffuse, and reflected solar radiation that strikes a surface. Usually expressed in kilowatts per square meter. Irradiance multiplied by time equals insolation.

Food subject to brief radioactivity, usually gamma rays, to kill insects, bacteria, and mold, and to permit storage without refrigeration.

Lines connecting points of equal temperature on a weather map.