18 Jan 2010
18 Jan 2010
Brief communication "Models for the exceedances of high thresholds over the precipitation daily totals in Athens, Greece"
G. Tzavelas1, A. G. Paliatsos2, and P. T. Nastos3
G. Tzavelas et al.
G. Tzavelas1, A. G. Paliatsos2, and P. T. Nastos3
- 1Department of Statistical and Insurance Science, University of Piraeus, Piraeus, Greece
- 2General Department of Mathematics, Technological Education Institute of Piraeus, Athens, Greece
- 3Laboratory of Climatology and Atmospheric Environment, Department of Geology and Geoenvironment, University of Athens, Athens, Greece
- 1Department of Statistical and Insurance Science, University of Piraeus, Piraeus, Greece
- 2General Department of Mathematics, Technological Education Institute of Piraeus, Athens, Greece
- 3Laboratory of Climatology and Atmospheric Environment, Department of Geology and Geoenvironment, University of Athens, Athens, Greece
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Received: 11 Apr 2009 – Revised: 20 Dec 2009 – Accepted: 23 Dec 2009 – Published: 18 Jan 2010
Extreme precipitation events have significant environmental consequences because they may cause considerable damages to urban as well as rural areas. The aim of this work is to construct a threshold model which will describe the exceedances over a threshold for the daily precipitation totals over Athens, Greece. The data used are daily precipitation totals recorded at the National Observatory of Athens, for a 115-year period (1891–2005).
The generalized Pareto distribution is considered as the proper distribution for the study of the exceedances. The threshold of u=15.8 mm (10% upper limit) is used for the construction of the optimal return level function.
