Meteorology

Meteorology

A database of terms pertaining to the scientific study of the atmosphere.

Industry: Weather

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Meteorology

mass spectrometry

Weather; Meteorology

Technique for the detection of chemicals by ionization, followed by the use of a magnetic or electric field to separate the ions according to their mass-to-charge ratio. The ionization can be ...

A plotting of the cumulative values of a variable as a function of time. This is applied especially to mass curves of rainfall in storm studies, to departures of various weather elements from normal, ...

mass divergence

Weather; Meteorology

The divergence of the momentum field, a measure of the rate of net flux of mass out of a unit volume of a system; in symbols, ∇ • u, where is the fluid density, u the velocity vector, and ∇ the del ...

mass scattering coefficient

Weather; Meteorology

A measure of the rate of scattering of radiation, expressed as the scattering cross section per unit mass. Units are m 2 kg −1 . See scattering coefficient.

marsh

Weather; Meteorology

Periodically or continually inundated areas covered with vegetation of cattails, sedges, rushes, and some woody hydrophytic plants.

mass balance

Weather; Meteorology

Usually, a model that employs the limitation that the system observed maintains a constant mass, that is, total mass divergence for the entire system is zero, but may be nonzero within the system.

mass accommodation coefficient

Weather; Meteorology

The probability that reversible uptake of a gas-phase species will occur upon collision of that species with a given surface (liquid or solid). This is often equated with a “sticking” ...