Height Contours: Isolines which denote the distribution of equal heights of a particular atmospheric pressure on a constant-pressure map ...
Height contours are represented by the solid lines. The small numbers along the contours are labels which identify the value of a particular height contour (for example 5640 meters, 5580 meters, etc.).
Map depicting contours of equal precipitation amounts recorded during a specific time period.
Long-range Forecasts
A forecast of weather conditions for a period extending beyond three or more days from the day of issuance.
1. Solid lines (Contours) are lines of equal heights of the 300 mb above sea level. AGL
2. Black arrows are the jet winds. Jet winds are winds of greater than 50 mph, and may reach speeds of over 300+ mph called: "ISOTACHS".
A chart containing contours of pressure, temperature, moisture, and potential temperature, all drawn relative to each other such that basic thermodynamic laws are satisfied.
Thermal WindIt is a theoretical wind that blows parallel to the thickness lines, for the layer considered, analogous to how the geostrophic wind blows parallel to the height contours.
GEOSTROPHIC WIND A steady horizontal motion of air along straight, parallel isobars or contours in an unchanging pressure or contour field.
isotherms and height contours are nearly parallel everywhere and directional wind shear is weak.
A trough on a mean sea level pressure chart, (or an upper air contour chart) can be picked out by an arrangement of isobars (contours) which are concave towards an area of low pressure (low contour height) along a particular axis, ...
On a map of thickness contours, the thermal wind "flows" between the contours; the tighter the contour spacing, the "faster" the thermal wind. This thermal wind is equivalent to the mean wind between the layer it represents i.e.
In such systems, height contours and isotherms are parallel everywhere, and winds do not change direction with height.
As a rule, a true equivalent barotropic system can never be achieved in the real atmosphere.
The geostrophic wind blows along the contours on a constant pressure surface. The speed of the geostrophic wind is dependent upon how close your pressure contour are together.
Thermodynamic Chart (or Thermodynamic Diagram) - A chart containing contours of pressure, temperature, moisture, and potential temperature, all drawn relative to each other such that basic thermodynamic laws are satisfied.
Contour intervals and number of contours are changed at the User Control Processor. There is also a combined attribute table available for this product.
The physiographic analogy derives from the similarity between the pattern of isotherms and height contours of an island on a topographic map.
It is represented on a synoptic chart by a system of isobars at a specified altitude level (or a system of contours at a specified pressure level) which enclose relatively low values of pressure (or altitude).
The tendency of wave crests to become parallel to bottom contours as waves move into shallower waters. This effect is caused by the shoaling process which slows down waves in shallower waters.
Return Period ...
CLOSED LOW A region of low pressure distinguished by a center of counterclockwise circulation (in the Northern Hemisphere), and is surrounded by one or more isobars or height contours.
A theoretical horizontal wind blowing in a straight path, parallel to the isobars or contours, at a constant speed. The geostrophic wind results when the Coriolis force exactly balances the horizontal pressure gradient force.
Glaciated cloud(6) ...
contouring circuit—On weather radar, a circuit which displays multiple contours of echo intensity simultaneously on the plan position indicator or range-height indicator scope. See contour (2).
Video Integrator and Processor, which contours radar reflectivity (in dBZ) into six VIP levels: ...
Gradient wind A theoretical horizontal wind that blows parallel to curved isobars or contours above the friction layer.
Granules A network of huge, irregularly shaped convective cells in the sun's photosphere.
high - In meteorology, an area of high pressure, referring to a maximum of atmospheric pressure in two dimensions (closed isobars) in the synoptic surface chart, or a maximum of height (closed contours) in the constant-pressure chart.
in operational meteorology, references to barotropic systems refer to equivalent barotropic systems - systems in which temperature gradients exist, but are parallel to height gradients on a constant pressure surface. In such systems, height contours ...
POSITIVE ISOTHERMAL VORTICITY ADVECTION (PIVA)- Advection of higher values of vorticity by the thermal wind on a map of vorticity and thickness contours. Implies an area of rising motion.
The maximum VIL of a storm is useful in determining its potential severity, especially in terms of maximum hail size.VIPVideo Integrator and Processor, which contours radar reflectivity (in dBZ) into six VIP levels: ...
 See also: Contour, Surface, Pressure, Temperature, Air
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