Meteorology

Meteorology

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

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Meteorology

mesotherm

Weather; Meteorology

A type of plant life that requires moderate temperatures for full growth; moisture is not a limiting factor. Compare megatherm, microtherm.

There are two zonal jet streams in the layer known as the mesosphere. In January, there is a westerly (blowing from the west) jet located at 70 km between 25° and 45°N with a maximum wind of 60 m s ...

mesosphere

Weather; Meteorology

The region of the atmosphere lying above the stratosphere and extending from the stratopause at about 50 km height to the mesopause at 85–95 km. The mesosphere is characterized by decreasing ...

mesoscale model

Weather; Meteorology

A model designed to simulate mesoscale atmospheric phenomena. Such models can include analytic solutions of a set of simplified equations governing atmospheric motion, scale models of particular ...

mesoscale disturbance

Weather; Meteorology

Same as disturbance except that the atmospheric feature has a Rossby number of order 1 and exhibits a horizontal scale comparable to the Rossby radius of deformation. For such systems, both ...

mesoscale convective system (MCS)

Weather; Meteorology

A cloud system that occurs in connection with an ensemble of thunderstorms and produces a contiguous precipitation area on the order of 100 km or more in horizontal scale in at least one direction. ...

mesoscale convective complex (MCC)

Weather; Meteorology

A subset of mesoscale convective systems (MCS) that exhibit a large, circular (as observed by satellite), long-lived, cold cloud shield. The cold cloud shield must exhibit the following physical ...