The Madden-Julian Oscillation is a 30-50 day wave of periodic rainfall enhancement over the Australian tropics signalling a burst in monsoon activity during the tropical wet season.



Related Terms

M.J.O.

The Madden-Julian Oscillation is a 30-50 day wave of periodic rainfall enhancement over the Australian tropics signalling a burst in monsoon activity during the tropical wet season.

MJO

The Madden-Julian Oscillation is a 30-50 day wave of periodic rainfall enhancement over the Australian tropics signalling a burst in monsoon activity during the tropical wet season.

ACOUSTIC-WAVE-BASED SENSOR

A device that employs a surface acoustic wave, a thickness-shear-mode resonance (a resonant oscillation of a thin plate of material), or other type of acoustic wave to measure the physical properties of a thin film or liquid layer or, in combination with chemically sensitive thin films, to detect the presence and concentration of chemical analytes.

STATIONARY WAVE

A wave that oscillates without progressing. One-half of such a wave may be illustrated by the oscillation of the water in a pan that has been tilted. Near the axis, which is called the node or nodal line, there is no vertical rise and fall of the water. The ends of the wave are called loops and at these places the vertical rise and fall is at a maximum. The current is maximum near the node and minimum at the loops. The period of a stationary wave depends upon the length and depth of the body of water. A stationary wave may be resolved into two progressive waves of equal amplitude and equal speeds moving in opposite directions. Also called STANDING WAVE.

FRONTAL CYCLONE

In general, any cyclone associated with a front; often used synonymously with WAVE CYCLONE or with EXTRATROPICAL CYCLONE (as opposed to tropical cyclones, which are non-frontal).

EYE OF THE STORM

The center of a tropical cyclone marked by relatively light winds, confused seas, rising temperature, lowered relative humidity, and often by clear skies. The general area of lowest atmospheric pressure of a cyclone is called STORM CENTER.

COMBER

A long, curving wave breaking on the shore.

HORIZONTALLY POLARIZED WAVE

A plane polarized electromagnetic wave in which the electric field vector is in a horizontal plane.

MODULATED WAVE

A wave which varies in some characteristic in accordance with the variations of a modulating wave.

WAVE

  1. An undulation or ridge on the surface of a fluid. 2. A disturbance propagated in such a manner that it may progress from point to point.

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