Web Page of Dr. Stefano Zecchetto

 Web Page of Dr. Stefano Zecchetto

 

 

 

 

Near Real Time meteorology

 

In the framework of RITMARE a wind network system was developed in December 2013 by CNR-ISAC, Uos. Padova and CNR-IAMC, Uos Oristano in the Gulf of Oristano, Sardinia, Italy. The wind network included the in-situ data from Sardegna-Clima Onlus organization at Oristano, Fenosu, Santa Giusta and Arborea (figure 1, left panel). The wind system was operating until August 2016. An example of the NRT wind field, obtained from the hourly in-situ wind measurements using a method to interpolate sparse data in meteorology (Brocchini et al., 1995) is shown in the right panel of figure 1. All winds are at 10 m of reference height.

 

Figure 1. Left panel: the Gulf of Oristano with the wind network system. Sites from 1 to 5 were equipped with 3D propeller anemometers, sites from 6 to 9 by the anemometers of the Sardegna-Clima Onlus network. Ritgh panel: hourly in-situ winds and the resulting interpolated field.

 

The figure 2, representing the time series of five days of wind speed at 10 m height (left panel) and direction (right panel) of the in-situ stations composing the wind network, was updated every hour.

 

Figure 2: Time series of the last five days of wind direction of the in-situ stations composing the wind network. Left panel: wind speed at 10 m height. Right panel: wind direction.

 

 

 

The wind observations were used as support of interpretations and validation of the wind field extracted from SAR (Zecchetto et al., 2016) and as forcing for the oceanographic model of the Gulf of Oristano (Cucco et al., 2016).

 

Selected references

Cucco, A., G. Quattrocchi, A. Satta, F.Antognarelli, F. de Biasio, E. Cadau, G. Umgiesser, and S. Zecchetto, Predictability of wind-induced sea surface transport in coastal areas, J. Geophys. Res. Oceans, 121,2016, doi:10.1002/2016JC011643.

Zecchetto S., F. De Biasio, A. della Valle, G. Quattrocchi, E. Cadau and A. Cucco, Wind Fields from C and X band SAR images at VV polarization in coastal area (Gulf of Oristano, Italy), IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol. 9, N. 6, June 2016 (doi:10.1109/JSTARS.2016.2538322).

Zecchetto S., A. della Valle, F. De Biasio, G. Quattrocchi, G. A. Satta, F. Antognarelli, E. Cadau and A. Cucco, The wind measuring system in the Gulf of Oristano as support to the regional scale oceanographic modeling, Journal of Operational Oceanography, 2016.

Brocchini M., M. Wurtele, G. Umgiesser and S. Zecchetto, Calculation of a Mass Consistent Two-Dimensional Wind Velocity Field: Comparison of Two Techniques, Journal of Applied Meteorology, Vol. 34, N11, 2543-2555, 1995.