SOIL ORGANIC CARBON

Organic carbon in mineral and organic soils (including peat) to a specified depth chosen by the host country for its UNFCCC national inventory accounting and applied consistently through the crediting period. Live fine roots (of less than the threshold diameter limit for belowground biomass) are included with soil organic matter where they cannot be distinguished […]

SOIL SUBSIDENCE

The lowering of the normal level of the ground, usually due to over pumping of water or oil from wells.

SOIL TEXTURE

The feel or composition of the soil (sand, silt, or clay) as determined by the size of the soil particles.

SOIL TYPE

Soils that are alike in all characteristics, including texture of the topsoil. Soil maps and information on site index, erosion potential, and other limiting properties are available from one’s county Soil Conservation Service office.

SOLAR RADIATION MODIFICATION (SRM)

Solar radiation modification refers to the intentional modification of the Earth’s shortwave radiative budget with the aim of reducing warming. Artificial injection of stratospheric aerosols, marine cloud brightening and land surface albedo modification are examples of proposed SRM methods. SRM does not fall within the definitions of mitigation and adaptation (IPCC, 2012b, p. 2). Note […]

SOLE SUPPLY

The amount of Beneficial Use allowed under a particular water right when used alone and separate from all Supplemental Rights. If a water right has been assigned to more than one Water Use Group, the Sole Supply of the water right is the sum of its Beneficial Use Amounts.

SOLE-SOURCE AQUIFER

As defined by the U.S. Environmental Protection Agency, an aquifer that supplies 50 percent or more of the drinking water of an area.

SOLID WASTE

Non-liquid, non-soluble materials ranging from municipal garbage to industrial wastes that contain complex and sometimes hazardous substances. Solid wastes also include sewage sludge, agricultural refuse, demolition wastes, and mining residues.

SOLID-PHASE EXTRACTION

A procedure to isolate specific organic compounds onto a bonded silica extraction column.