Wind Speed and Sunshine Hours Duration Trends over North-Eastern Dry Zone of Karnataka

摘要

Wind speed and sunshine hours duration scenarios over North-Eastern dry zone of Karnataka have been statistically analyzed on weekly basis and trends were analyzed on monthly basis. The data of wind speed of 35 years (1980-2015) and sunshine hours for 17 years (1999-2015) was used. The results shows that, in the recent decade (2006-2015), the parameters like mean, maximum and minimum weekly wind speeds exhibited slightly decreasing scenario in comparison to past 2.5 decades (1981-2005). The significant decreasing wind speed trends were observed during April, June, July, August, September, October, November and December months. The mean weekly sunshine hours ranged from 4.3 h (29~(th SMW) to 9.1 h (8, 14 and 16~(th) SMW). The significant decreasing trends of sunshine hours were observed for March, April, November and December months during study period at Raichur, Karnataka.