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Average wind speed frequency at Winter, Spring, Summer, Autumn seasons for Baghdad station

Average wind speed frequency at Winter, Spring, Summer, Autumn seasons for Baghdad station

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Monthly observed wind speed data at four weather stations (Baghdad, Mosul, Basra, Rutba) at 10m above surface were used to explore the temporal variations of the wind speed (1971-2000) in Iraq. There are different methods to analyze wind speed variation data, but the time series are one of the powerful analysis methods to diagnose the seasonal wind...

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Context 1
... at the summer its reached to the rate 91% at the range (4-4.5)m/s, this range at autumn is decreases to about (2.6-2.8)m/s, see Figure 2. From applied the first method to find abnormal wind speed we find that in winter the highest positive and negative deviation about the average seasonal wind 2.6m/s is concentrated at years 1985,1987, ( Figure 3) the higher frequency of this deviations taken the range (0-(-0.2))m/s ...
Context 2
... the highest negative averages was also in summer in 1978, about 1.0 m/s, Figure 11, and the higher frequency distribution concentrated at the range (0-(-0.5)) m/s (see Figure 12). In winter we don't have any large deviation above or below annual average wind speed, (see Figure 11), but higher frequency of this deviation concentrated at negative side (0-(-0.2)m/s) ...
Context 3
... winter we don't have any large deviation above or below annual average wind speed, (see Figure 11), but higher frequency of this deviation concentrated at negative side (0-(-0.2)m/s) see Figure 12. In the spring and autumn we see that negative deviation is greater than positive deviation even after 1985 where the positive deviation becomes greater than negative, frequency distribution of this seasons is low and concentrated over large range, Figure 12. ...
Context 4
... Figure 12. In the spring and autumn we see that negative deviation is greater than positive deviation even after 1985 where the positive deviation becomes greater than negative, frequency distribution of this seasons is low and concentrated over large range, Figure 12. ...

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