Wind Data
## Warning: NAs introduced by coercion
## Warning: NAs introduced by coercionData Summary
## Date Mean.Wind.Speed Mean.Wind.Direction
## Min. :2015-01-01 00:00:00 Min. : 1.000 Min. : 10.0
## 1st Qu.:2015-05-17 00:00:00 1st Qu.: 4.000 1st Qu.:150.0
## Median :2015-09-29 00:00:00 Median : 7.000 Median :220.0
## Mean :2015-09-29 12:18:07 Mean : 7.757 Mean :215.5
## 3rd Qu.:2016-02-12 00:00:00 3rd Qu.:11.000 3rd Qu.:280.0
## Max. :2016-06-28 00:00:00 Max. :31.000 Max. :360.0Wind speed by month
## 1 2 3 4 5 6 7
## 7.372481 6.709287 10.692412 8.103146 9.909214 7.220430 6.062454
## 8 9 10 11 12
## 7.944855 8.229839 8.229167 5.576043 5.695833Wind speed by month arranged in an ascending order
## 11 12 7 2 6 1 8
## 5.576043 5.695833 6.062454 6.709287 7.220430 7.372481 7.944855
## 4 10 9 5 3
## 8.103146 8.229167 8.229839 9.909214 10.692412Wind speed by year
## 2015 2016
## 7.975400 7.311013Wind direction by month and year
## 12 5 6 10 8 3 1 7
## 199.3631 201.5793 205.9368 206.8371 211.0363 215.4136 215.6369 219.4086
## 9 4 2 11
## 226.1111 226.5393 228.6759 229.9861## 2015 2016
## 222.2231 201.68691.Mean wind speed was on average 7.75 Km/h with a minumum of 1 km/h and a maximum of 31 km/h
2.As shown, Wind speed was highest in December and January and then started to decrease to reach the lowest speed by September and October.
3.Thre was no significant difference in the wind speed between years 2015 and 2016.
plot wind speed per month
Interestingly, there was a trend towards decrease in mean wind speed by time as speed was max. by December and Januarythen started decreasing after January to reach its lowest by October.
Examine pattern in data
As previously mentioned, Results show that wind speed tend to decrease starting from February to reach its peak by December and January
Mean wind speed by day
## 0 1 2 3 4 5 6 7
## 6.931860 6.753223 6.689338 6.775322 6.696133 6.566176 6.500000 6.549632
## 8 9 10 11 12 13 14 15
## 7.009191 7.464088 7.865562 8.360294 9.005515 9.402214 9.574861 9.576710
## 16 17 18 19 20 21 22 23
## 9.330869 9.057301 8.562731 8.081031 7.707182 7.443831 7.203327 7.088561Wind spped by hour
It is noted that wind speed is at its maximum at early morning where the curve shows a peak at 3 pm then speed decreases to reach its minumum by late night then starts rising again.
Examine relation between wind Direction and Time of day
However the wind direction did not show any specific pattern.
Summary of wind direction by angle
## factor(0)
## 16 Levels: (0,22.5] (22.5,45] (45,67.5] (67.5,90] (90,112] ... (338,360]## (0,22.5] (22.5,45] (45,67.5] (67.5,90] (90,112] (112,135] (135,158]
## 119 128 137 881 963 652 569
## (158,180] (180,202] (202,225] (225,248] (248,270] (270,292] (292,315]
## 872 817 1480 838 1898 989 1322
## (315,338] (338,360]
## 867 494Windrose plot of wind direction
The overall plot shows the direction of wind with larger areas indicating higher that wind was at that direction for longer durations of time throughout the year.
Bar plot of Wind direction
The most common wind direction was 210 degrees that accounted for 876 of the readings.
Plot of wind diraction by speed
## Loading required package: RColorBrewer## Loading required package: scales## Warning: package 'scales' was built under R version 3.3.2
The above figure show the overall wind direciton in relation to wind speed
Number of observations recorded by month
## January February March April May June July
## 1476 1367 1487 1439 1488 1361 744
## August September October November December
## 743 720 743 720 738