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IJSTR >> Volume 4 - Issue 1, January 2015 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Study Of The Wind Speed, Rainfall And Storm Surges For The Scheldt Estuary In Belgium

[Full Text]



Mohammad Abul Hossen, Farjana Akhter



Index Terms: Climate Data Operator, Global Climate Models, ENSEMBLES climate models, IPCC, MATLAB, Regional Climate Models, Royal Meteorological Institute.



Abstract: The Belgian coast and the Scheldt estuary are important for the Belgian economy. Coastal flood risks tend to increase due to climate change. This study was set out to investigate the wind speed, surges and rainfall in the Scheldt estuary. The study explored the changes in mean and extreme winds according to the recent ENSEMBLES climate models and examined the dependency of extremes between surge with wind speed and surge with rainfall. The dependence analysis between surge and wind speed aimed to investigate whether climatic changes in wind speed can be transferred to changes in surge, while the existence of dependence between surge and rainfall would require climate scenarios for rainfall upstream in the Scheldt basin to be correlated with climate scenarios for the downstream surge boundary. A special dependence measure χ, developed by Buishand (1984) and Coles et al (2000) was followed. Data was extracted and processed using Matlab and CDO. The analysis of wind speeds showed that future wind speeds in the estuary (based on the climate models) will remain stable in comparison with the past wind speeds. Also, wind direction will be mainly from 180°-300°, although slight shifts might appear towards more frequent south western winds. From the study of dependency, there was no significant dependency between sea surge at Oostende coast and rainfall at different stations. The definition of significant dependency is strong or conservative. Above all, the extremes events are more or less dependent. While the study has not found significant changes in wind speed and only slight changes in wind direction, it is important to further investigate the impact of these changes on the Scheldt estuary using hydrodynamic models. The assessment of changes in extreme rainfall and sea surge need to be further studied.



[1] Baeyens, W., et al. 1998. General description of the Scheldt estuary. Hydrobiologia, 366, pp. 1–14.

[2] Bengtsson, L.B., Hodges, K.I., and Roeckner E., 2006, Storm tracks and climate change, Journal of Climate, 19(15), pp. 3518-3543.

[3] Brink, H.W., Hurk, B.J.J.M., 2007. Future changes in winter wind-climate over Europe. Climate Dynamic, 2007, pp. 7-8.

[4] Buishand TA., 1984. Bivariate extreme-value data and the station-year method. Journal of Hydrology, 69, pp. 77–95.

[5] Coles S, Heffernan J, and Tawn J.A., 2000. Dependence measures for extreme value analyses. Extremes, 2, pp. 339–365.

[6] ENSEMBLES, The ENSEMBLES project RT3, [online] available at http://ensemblesrt3.dmi.dk/ [accessed on 11/11/2010].

[7] IPCC, 2007. Climate Change 2007. The Physical Science Basis. Cambridge University Press, Cambridge, p. 940.

[8] Lambert, S., Fyfe, J.C., 2006. Changes in winter cyclone frequencies and strengths simulated in enhanced greenhouse gas experiments: Results from the models participating in the IPCC diagnostic exercise. Climate Dynamics, 26, (7-8). pp. 713-728.

[9] Leckebusch, G.D. et al., 2006. Analysis of frequency and intensity of winter storm events in Europe on synoptic and regional scales from a multi-model perspective. Climate Research, 31, pp. 59-74.

[10] McInnes, K. L., Macadam, I., Hubbert, G. D., and O’Grady, J. G., 2009. A modelling approach for estimating the frequency of sea level extremes and the impact of climate change in southeast Australia. Nat Hazards, 51, pp. 115–137.

[11] Sangireddy H. Reading NetCDF files in MATLAB and Analyzing the Precipitation Data. [online] available at https://webspace.utexas.edu/hs8238/www/surfacehydrology/surfacehydrology_Project.htm, [Accessed on 26/02/2011].

[12] Svensson C., Jones D.A., 2002. Dependence between extreme sea surge, river flow and precipitation in eastern Britain. International Journal of Climatology, 22, pp. 1149-1168.