Influence of the large scale circulation on the North Sea wind climateSuselj, Kay and Sood, Abha and Heinemann, Detlev (2007) Influence of the large scale circulation on the North Sea wind climate. e-WindEng. pp. 01-45. ISSN 1901-9181 Full text available as:
Official URL: http://ejournal.windeng.net/17/ AbstractThe North Sea 10m wind speed (WS10) climate for the 59 years (1948-2006) period is examined by relating the long time series of low resolution NCEP reanalysis data with the two shorter high resolution ECMWF operational analysis (2001-2006) and WRF simulation (2004-2006) data sets. The variability of the daily WS10 can be quite well represented by the low resolution data set due to high spatial coherency of the WS10 over the sea, whereas the magnitude and the detailed structure close to the coast cannot be resolved in the low resolution data set. The monthly WS10 anomalies from the annual cycle is related to the large scale patterns of Sea Level Pressure (SLP) and 2m Temperature (T2M) with the aim of constructing a statistical model for statistical downscaling WS10 on intraannual to interannual time scales. The dominant mode of WS10 anomaly was best related to the SLP anomaly pattern similar to the North Atlantic Oscillation (NAO) where the northern center is shifted eastwards. This SLP pattern is more pertinent than the NAO index for predicting the North Sea WS10 variability. In the 59 years period studied here, the WS10 shows an increasing trend and a widening wind distribution mainly due to an increase in the higher percentiles. This investigation is undertaken to detect and examine an indicator of regional climate change of WS10 field over the North Sea in the hindcasts and future climate scenarios.
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