04 Apr 2022
04 Apr 2022
Status: this preprint is currently under review for the journal NHESS.

Wind-Wave Characteristics and extremes along the Emilia-Romagna coast

Umesh Pranavam Ayyappan Pillai1, Nadia Pinardi1, Ivan Federico2, Salvatore Causio2, Francesco Trotta1, Silvia Unguendoli3, and Andrea Valentini3 Umesh Pranavam Ayyappan Pillai et al.
  • 1Department of Physics and Astronomy, University of Bologna, Bologna, 40127, Italy
  • 2Euro-Mediterranean Center on Climate Change, Lecce, 73100, Italy
  • 3Hydro-Meteo-Climate Service of the Agency for Prevention, Environment and Energy of Emilia-Romagna, Arpae-SIMC, Bologna, 40122, Italy

Abstract. This study examines the wind-wave characteristics along the Emilia-Romagna coasts (northern Adriatic Sea, Italy) with a 10-year wave simulation for the period 2010–2019 performed with the high-resolution unstructured-grid WW3 coastal wave model. The wave parameters (significant wave height, mean and peak wave period, and direction) were validated with the in-situ measurements at a coastal station Cesenatico. In the coastal belt, the annual mean wave heights varied from 0.2–0.4 m, and the seasonal mean was highest for the winter period (> 0.4m). The Emilia-Romagna coastal belt was characterized by wave and spectra seasonal signals with two dominant frequencies of the order of 10 s/ 5–6 s for autumn and winter, and 7–9 s/4 s for spring and summer. The wavelet power spectra of significant wave height for 10-years show considerable variability, having monthly and seasonal periods. This validated and calibrated data set enabled us to study the probability distributions of the significant wave height along the coasts and define a hazard index based on a fitted Weibull probability distribution function.

Umesh Pranavam Ayyappan Pillai et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2022-103', Anonymous Referee #1, 28 Apr 2022
  • RC2: 'Comment on nhess-2022-103', Anonymous Referee #2, 28 Apr 2022

Umesh Pranavam Ayyappan Pillai et al.

Data sets

Data/ codes supporting manuscript titled "Wind-Wave Characteristics and extremes along the Emilia-Romagna coast" submitted to NHESS Umesh Pranavam Ayyappan Pillai; Nadia Pinardi; Ivan Federico; Salvatore Causio; Francesco Trotta; Silvia Unguendoli; Andrea Valentini

Umesh Pranavam Ayyappan Pillai et al.


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Short summary
The study presents the application of a high-resolution coastal modelling for wave hindcasting in the Emilia Romagna coastal belt. The generated coastal databases which provide an understanding of the prevailing wind-wave characteristics can aid in predicting the coastal impacts.