Bureau of Meteorology Wind Frequency Analysis Site Number: 040223 Location: BRISBANE AERO Latitude: -27.42 Longitude: 153.11 Elevation: 4 metres (above sea level) Start year: 1950 End year: 2000 Period: 9am Annual Station number,Time period,No. of obs.,Range of wind speed in km/h,% of wind from (N),% of wind from (NE),% of wind from (E),% of wind from (SE),% of wind from (S),% of wind from (SW),% of wind from (W),% of wind from (NW),% of Calms,Row totals 040223,9 am , 18287, >= 0 and < 10 , 3.4, 1.7, 1.8, 3.0, 8.8, 10.7, 2.7, 3.0, 11.7, 46.9 040223,9 am , 18287,>= 10 and < 20 , 3.0, 1.8, 3.2, 4.6, 12.0, 11.9, 2.4, 1.3, 0, 40.3 040223,9 am , 18287,>= 20 and < 30 , 0.7, 0.3, 1.3, 2.4, 2.3, 2.4, 1.7, 0.2, 0, 11.4 040223,9 am , 18287,>= 30 and < 40 , 0.0, 0.0, 0.2, 0.3, 0.1, 0.2, 0.5, 0.0, 0, 1.3 040223,9 am , 18287, >= 40 , 0.0, 0, 0.0, 0.0, 0.0, 0.0, 0.1, 0, 0, 0.2 040223,9 am , 18287,Column Totals , 7.2, 3.9, 6.5, 10.3, 23.3, 25.3, 7.4, 4.5, 11.7, 100 Notes for wind speed vs direction frequency analysis completed on 09/08/2019 ____________________________________________________________________________ All available wind speed and direction observations for 9am and 3pm local time were included in this analysis Byte Location , Byte Size , Explanation ---------------------------------------------------------------------------- 1-6 ,6 , Bureau of Meteorology station number 8-27 ,20 , Time period for the analysis based on local time 29-34 ,6 , Number of observations used in the analysis 36-50 ,15 , Range for wind speed in km/h 52-56 ,5 , Percentage of wind direction observations in class N 58-62 ,5 , Percentage of wind direction observations in class NE 64-68 ,5 , Percentage of wind direction observations in class E 70-74 ,5 , Percentage of wind direction observations in class SE 76-80 ,5 , Percentage of wind direction observations in class S 82-86 ,5 , Percentage of wind direction observations in class SW 88-92 ,5 , Percentage of wind direction observations in class W 94-98 ,5 , Percentage of wind direction observations in class NW 100-104 ,5 , Percentage of calms 106-110 ,5 , Row totals IMPORTING INTO A SPREADSHEET ____________________________ 1) Select the contents of a table (including the first row which describes each column) and copy to the clipboard. 2) Open a text editor and paste the content of the clipboard into a new file and save it as type .csv 3) Open with a spreadsheet software package (For example, Excel) Optionally, the content of the clipboard can be directly pasted into a spreadsheet and converted from text to columns (For example, in Excel, select Data tab, click Text to columns then option delimited, then select comma) WIND DIRECTIONS _______________ Much of the recent wind direction data are now stored in 10s of degrees, so data broken into specfic bins such as 8 or 16 compass points will likely cause some aliasing, with some bins holding more directions as 36 is not divisible by 8 or 16. INSTRUMENTS AND OBSERVATIONAL PRACTICES _______________________________________ Historically a nearby site (within about 1 mile in earlier days) may have used the same site number. There may have been changes in instrumentation and/or observing practices over the period included in a dataset, which may have an effect on the long-term record. In recent years many sites have had observers replaced by Automatic Weather Stations, either completely or at certain times of the day. COPYRIGHT _________ The copyright for any data is held in the Commonwealth of Australia and the purchaser shall give acknowledgement of the source in reference to the data. Apart from dealings under the copyright Act, 1968, the purchaser shall not reproduce, modify or supply (by sale or otherwise) these data without written permission. Enquiries should be made to the Bureau of Meteorology, PO Box 1289K, Melbourne 3001, marked to the attention of SRDS. http://www.bom.gov.au/other/copyright.shtml LIABILITY _________ While every effort is made to supply the best data available this may not be possible in all cases. We do not give any warranty, nor accept any liability in relation to the information given, except that liability (if any), that is required by law.