High resolution modelling of the extreme precipitation event over Algiers in November 2001

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Moore, S. A. ; Wilson, C. ; Bell, S. (2005)

Between 18:00UTC on Friday 9th November and 12:00UTC on Saturday 10th November 2001 260mm of rainfall was recorded at Bouzareah, compared to the November average of just 96mm. This extreme rainfall resulted in landslides and flooding, causing immense damage to the Bab-el-Oued district of Algiers and affected the lives of more than 2000 people. In this paper, key results from a modelling study of this event using the UK Met Office Unified Model at global (60km), regional (20km) and national (4km) horizontal resolutions are described. In general, it is found that the event could be well forecast with increases in resolution leading to better predictions of both the distribution and intensity of the rainfall. The role of the local orography and latent heating are also discussed.
  • References (7)

    Cullen, M. J. P., Davies, T., Mawson, M. H., James, J. A., Coulter, S. C., and Malcolm, A.: An overview of numerical methods for the next generation of NWP and climate models, in: Numerical methods in atmospheric and ocean modelling. The Andre Robert memorial volume, edited by: Lin, C., Laprise, R., and Ritchie, H., pp. 425-444, Canadian Meteorological and Oceanographic Society, Ottawa, Canada, 1997.

    Davies, T., Cullen, M. J. P., Mawson, M. H., and Malcolm, A. J.: A New Dynamical Formulation for the UK Meteorological Office Unified Model, in Proceedings of ECMWF seminar on recent developments in numerical methods for atmospheric modelling, 7- 11 September 1998, pp. 202-225, European Centre for MediumRange Weather Forecasts, Shinfield Park, Reading, Berkshire, RG2 9AX, UK, 1999.

    GenoveĀ“s, A. and Jansa`, A.: Diabatic Processes Contribution to the November 2001 Storm, in: Mediterranean Storms: Proceedings of the 4th EGS Plinius Conference, published on CD-ROM (ISBN 84-7632-792-7), 2002.

    Hamadache, B., Terchi, A., and Brachemi, O.: Study of the meteorological situation which affected the west and the center of Algeria in general and Bab-el-Oued in particular in the 10th November 2001, in: Mediterranean Storms: Proceedings of the 4th EGS Plinius Conference, published on CD-ROM (ISBN 84- 7632-792-7), 2002.

    Lorenc, A. C., Ballard, S. P., Bell, R. S., Ingleby, N. B., Andrews, P. L. F., Barker, D. M., Bray, J. R., Clayton, A. M., Dalby, T., Li, D., Payne, T. J., and Saunders, F. W.: The Met. Office Global 3-Dimensional Variational Data Assimilation Scheme, Q. J. R. Meteorol. Soc., 126, 2991-3012, 2000.

    Tripoli, G. J., Pinori, S., Dietrich, S., Panegrossi, G., Mugnai, A., and Smith, E.: The 9-10 November, 2001 Algerian Flood: A Polar Low?, in: Mediterranean Storms: Proceedings of the 4th EGS Plinius Conference, published on CD-ROM (ISBN 84-7632-792- 7), 2002.

    Webster, S., Brown, A. R., Cameron, D. R., and Jones, C. P.: Improvements to the representation of orography in the Met Office Unified Model, Q. J. R. Meteorol. Soc., 129, 1989-2010, 2003.

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