Variations in long term wind speed during different decades in Arabian Sea and Bay of Bengal

Journal of Earth system science

C Sajiv Philip1¹  V Sanil Kumar1¹ 

[1] Ocean Engineering, National Institute of Oceanography, Goa 403 004, India.$$

关键词: Extreme value;    NECP/NCAR data;    north Indian Ocean;    Weibull distribution;    Gumbel distribution.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

A study has been carried out by comparing the extreme wind speeds estimated based on NCEP/NCAR reanalysis data for 100 years return period using Fischer Tippet-1 (commonly known as Gumbel)and Weibull distributions for three locations (off Goa,Visakhapatnam and Machilipatnam)in the north Indian Ocean.The wind dataset for Goa is compared with that from ERA-40 data.For higher wind speeds (12-20 m s−1),NCEP wind speed has higher percentage of occurrence than that of ERA-40.Analysis has shown slight upward trend in the annual maximum wind for location off Machilipatnam with an increase of 1.2cms−1 per year and a decreasing trend of −1.3cms−1 per year in the case of Goa.The Weibull distribution with shape parameter 2 fits the annual maximum wind data better than FT-1 distribution.

【 授权许可】

Unknown