Title: Wind speed trend analysis along the Indian coast for 40 years
Authors: Bhasuru Abhinaya Srinivas; Surendra Singh Kachhwaha; Garlapati Nagababu
Addresses: School of Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, 382007, India ' School of Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, 382007, India ' School of Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, 382007, India
Abstract: Wind speed trend analysis will help to understand the impact of climate change on wind energy resources. Therefore, the present study investigates the wind speed trends at six locations along the Indian coast using the 40-year (1979-2018) ERA-Interim reanalysis wind speed data. The cumulative changes and variation in trends for wind speed are computed by using first-degree polynomial regression analysis. Further, annual variability, seasonal variability and cumulative changes in the wind power density are calculated. From the results, it has been observed that trends of wind speed are incremental at two locations (Rameshwaram and Kanyakumari) and decremental at the other four locations. The maximum cumulative change in wind speed of 2.5% occurs at the Rameshwaram with an increasing trend of 0.04 m/s/decade. The extreme values of wind power density are observed during the post-monsoon season, a decrement of 40% at the Jakhau and, an increment of 24.78% at the Rameshwaram.
Keywords: climate change; ECMWF; wind speed; trend analysis; Indian coast; wind power density.
International Journal of Environment and Sustainable Development, 2022 Vol.21 No.1/2, pp.242 - 252
Received: 09 Jan 2020
Accepted: 14 Oct 2020
Published online: 02 Dec 2021 *