L'Osservatorio Meteorologico di San Marcellino-Napoli Centro: i dati dell'anno 2015

Abstract - The analysis of all meteorological parameters of the year 2015 shows that: • The monthly mean pressure ranges between 1012.8 hPa of February and 1031.6 hPa of December, with an annual mean of 1017.4 hPa, with an absolute minimum of 984.5 hPa measured on 30 January at 15:10 and with an absolute maximum of 1037.4 hPa measured on December 6 at 23:20. • The monthly mean air temperature ranges from 10.4 °C of February and 28.4 °C of July, with an annual mean of 18.5 °C, with an absolute minimum of 2.2 °C measured on 9 February at 13:30 and with an absolute maximum of 37.1 °C measured on 8 August at 15:00. • The monthly mean relative humidity ranges from 62.7% of June and 73.7% of January, with an annual mean of 69.3%, with an absolute minimum of 22.0% measured on May 12 at 14:20 and with an absolute maximum of 95.0% measured on 31 January at 19:40. • The mean monthly global solar radiation ranges between 160.5 W/m2 of January and 454.5 W/m2 in July, with an annual mean of 315.8 W m2 and with an absolute maximum of 1285.0 W/m2 measured on 24 May at 14:20. • The mean monthly UV Index ranges from 2.6 of January to 5.9 of August, with an annual average of 5.2 and with an absolute maximum of 12.5 measured on 27 July at 13:30. • The monthly mean wind intensity ranges between 1.0 m/s of July and 1.8 m/s of March, with an annual mean of 1.3 m/s and with most intense gust of 22.4 m/s measured on 4 February at 00:40. • The wind direction shows a mode from the North, North-East in the months of January, February, November, December, from South, South-West in the months of March, April, May, June, July, August. •The monthly cumulate rainfall ranges from 0 mm of December to 189.3 mm of February, with a cumulate annual value of 840.7 mm and with an absolute maximum of 189.3 mm measured on 22 February.