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This layer represents the geographic locations at which conductivity observations are being collected. Conductivity sensors act as a proxy for salinity by measuring the total concentration of ions in solution (i.e., a measure of water's capability to pass electrical flow). Conductivity in water is affected by the presence of inorganic dissolved salts such as chloride, nitrate, sulfate, and phosphate a
nions (ions that carry a negative charge) or sodium, magnesium, calcium, iron, and aluminum cations (ions that carry a positive charge). Conductivity is measured in microsiemens per centimeter (µs/cm) and can be converted, with temperature, to the international standard of Practical Salinity Units (PSU) by the UNESCO standard found at many websites and documented at <a href="http://unesdoc.unesco.org/images/0005/000598/059832eb.pdf">
http://unesdoc.unesco.org/images/0005/000598/059832eb.pdf</a> |