wind rose


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wind rose

[′win ‚drōz]
(meteorology)
A diagram in which statistical information concerning direction and speed of the wind at a location may be summarized; a line segment is drawn in each of perhaps eight compass directions from a common origin; the length of a particular segment is proportional to the frequency with which winds blow from that direction; thicknesses of a segment indicate frequencies of occurrence of various classes of wind speed.

Wind Rose

 

a graph representing wind conditions at a given location; usually constructed for a month, season, or year, using data gathered over many years. The values of the recurrence of directions (as a percentage of the total number of observations) or of the average and maximum wind speeds corresponding to each rhumb are plotted to scale along eight or 16 rhumbs in the form of vectors. The ends of the vectors are joined by a line.

wind rose

wind rose
A diagram for a given location showing the relative frequency and the velocity of the wind from a selected compass direction.
A wind rose indicates how wind speed and directions are typically distributed at a particular location. Presented in a circular format, the wind rose shows the frequency of winds blowing from particular directions. The length of each “spoke” around the circle is related to the frequency of time that the wind blows from a particular direction. Each concentric circle represents a different frequency, emanating from zero at the center to increasing frequencies at the outer circles. The wind roses shown here contain additional information, in that each spoke is broken down into discrete frequency categories that show the percentage of time that winds blow from a particular direction and at certain speed ranges. All wind roses shown here use 16 cardinal directions, such as north (N), NNE, NE, etc. This rose shows that the winds at this particular location in April blow from the northwest much of the time. In fact, the 3 spokes around the northwest direction (WNW, W, and NNW) comprise 50% of all hourly wind directions.
References in periodicals archive ?
According to the document, Wind Rose is the contractor of the project for construction of the multi-functional ice complex, which is expected to be commissioned on Dec.
Further, to show the information about the distributions of wind speeds, and the frequency of the varying wind directions, one may draw a so-called wind rose on the basis of meteorological observations of wind speeds and wind directions.
We hypothesize, from the results of the synoptic composites, that anomalous sources of warm or cold air might be seen through monthly wind rose frequencies.
Amritsar/Shimla, Jan 6 (ANI): Strong cold wind rose in the North India after snowfall in the upper reaches of the country.
An agreement to sell two MD83 aircraft to Wind Rose Aviation, a charter airline based in Kiev, Ukraine, has been completed by Global Aircraft Solutions Inc (Global Aircraft) (OTCBB:GACF.OB), with a combined fixed price of more than USD10m.
Although the average direction is used in some serious studies (for example in [12] for relatively short time intervals), one is strongly advised to use the frequency of occurrence of winds from different directions (the wind rose).
Overnight leader John Peters, a former assistant at Southerndown had the misfortune to play in the afternoon when the wind rose considerably and he slipped to a one over par 71 but still stayed in contention, only fours strokes behind Bebb.
Overnight leader John Peters had the misfortune to play in the afternoon when the wind rose considerably and he slipped to a one-over-par 71, but still stayed in contention, only four strokes behind Bebb thanks to two birdies in the last six holes.
Figure 2 shows a wind rose, which visually describes the average wind speeds and directions.
The surefootedness of the S40 as the wind rose and the roads began to submerge was quite remarkable and somehow the steering managed to retain a good feel.
A wind rose is a graphic chart that averages these recorded wind directions and speeds and plots them about a circle.