Definitions - o

The range of values the climate at a particular location can take over time.

Ocean fertilization is a proposed form of geo-engineering that involves the introduction of iron particles to the upper ocean to stimulate a phytoplankton bloom.

In theory, the phytoplankton will then absorb CO2 before dying and sinking to the bottom of the ocean where the carbon will be sequestered.

An experiment in early 2009 in the Southern Ocean dampened hopes for widespread uptake of the technology after crustacean zooplankton fed on the bloom before it died and reintroduced the extracted CO2 into the atmosphere.

However, some scientists maintain that ocean fertilization could prove a cost effective means of reducing concentrations of CO2 in the atmosphere. Environmental groups counter that large scale ocean fertilization projects could have unexpected consequences on maritime food chains.

An off grid system is a solar panel electricity generation system which is not connected to the mains power distribution grid. It is completely independent of the mains grid, so to provide power during darkness such solar panel systems need a secondary power store (such as batteries) or a generator.

Materials may give off gases, some of which are toxic. Implicated in a variety of ailments, some people are more sensitive than others to these gases.

Deep clear lakes with few nutrients, little organic matter and a high dissolved-oxygen level.

The capacity to induce cancer.

A system capable of rotating about one axis to track the sun.

Climate change is a change in the statistical distribution of weather over periods of time that range from decades to millions of years. It can be a change in the average weather or a change in the distribution of weather events around an average (for example, greater or fewer extreme weather events). Climate change may be limited to a specific region, or may occur across the whole Earth.

In recent usage, especially in the context of environmental policy, climate change usually refers to changes in modern climate. It may be qualified as anthropogenic climate change, more generally known as global warming.

Wikipedia - Climate Change entry

The range of values the climate at a particular location can take over time.

Organic farming is the form of agriculture that relies on techniques such as crop rotation, green manure, compost, biological pest control, and mechanical cultivation to maintain soil productivity and control pests on a farm. Organic farming excludes or strictly limits the use of synthetic fertilizers and synthetic pesticides, plant growth regulators, livestock antibiotics, food additives, and genetically modified organisms.

Compared to traditional aqueous inorganic redox flow batteries such as vanadium redox flow batteries and Zn-Br2 batteries, that have been developed for decades, organic redox flow batteries have emerged in last few years (since 2009) and hold great promise to overcome major drawbacks preventing economical and extensive deployment of traditional inorganic redox flow batteries. The primary merit of organic redox flow batteries lies at using sustainable and tunable organic redox active molecules, free of resources limit and enabling unlimited combinations of anode and cathode materials.

Greenhouse gases are those gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of thermal infrared radiation emitted by the Earth’s surface, the atmosphere itself, and by clouds. This property causes the greenhouse effect.

Greenhouse gases are essential to maintaining the current temperature of the Earth; without them the planet would be uninhabitable.

Wikipedia Entry

Precipitation that results when moist air is lifted over a topographic barrier such as a mountain range.

Cyclic movement of oxygen in different chemical forms from the environment, to organisms, and then back to the environment.

Greenhouse gases are those gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of thermal infrared radiation emitted by the Earth’s surface, the atmosphere itself, and by clouds. This property causes the greenhouse effect.

Greenhouse gases are essential to maintaining the current temperature of the Earth; without them the planet would be uninhabitable.

Wikipedia Entry

A family of man-made compounds that includes, but are not limited to, chlorofluorocarbons (CFCs), bromofluorocarbons (halons), methyl chloroform, carbon tetrachloride, methyl bromide, and hydrochlorofluorocarbons (HCFCs). These compounds have been shown to deplete stratospheric ozone, and therefore are typically referred to as ODSs.

Chemical compounds, such as carbon monoxide, methane, non-methane hydrocarbons, and nitrogen oxides, which in the presence of solar radiation react with other chemical compounds to form ozone, mainly in the troposphere.