کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
292590 510943 2011 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An analysis of observed daily maximum wind gusts in the UK
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
An analysis of observed daily maximum wind gusts in the UK
چکیده انگلیسی

The greatest attention to the UK wind climatology has focused upon mean windspeeds, despite a knowledge of gust speeds being essential to a variety of users. This paper goes some way to redressing this imbalance by analysing observed daily maximum gust speeds from a 43-station network over the period 1980–2005. Complementing these data are dynamically downscaled reanalysis data, generated using the PRECIS Regional Climate Modelling system, for the period 1959–2001. Inter-annual variations in both the observed and downscaled reanalysis gust speeds are presented, with a statistically significant (at the 95% confidence interval) 5% increase across the network in daily maximum gust speeds between 1959 and the early 1990s, followed by an apparent decrease. The benefit of incorporating dynamically downscaled reanalysis data is revealed by the fact that the decrease in gust speeds since 1993 may be placed in the context of a very slight increase displayed over the longer 1959–2001 period. Furthermore, the severity of individual windstorm events is considered, with high profile recent events placed into the context of the long term record. A daily cycle is identified from the station observations in the timing of the daily maximum gust speeds, with an afternoon peak occurring between 12:00–15:00, exhibiting spatial and intra-annual variations.


► Analysis of observed UK gust speeds and downscaled reanalysis wind data.
► Daily maximum gust speeds increased since 1959, peaking in mid-1990s.
► Clear diurnal cycle in timing of daily maximum gust speeds.
► Storm severity index developed for period 1959–2005.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 99, Issue 8, August 2011, Pages 845–856
نویسندگان
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