Vol. 12, Issue 4 (2023)

Author(s):
M Ratnam, D Sowmya, Kishore Babu and A Subbaramireddy

Abstract:
In view of assessing the season wise correctness, usability and un-usability of the rainfall forecasted to the semi- arid climate of Krishna Agro-climatic zone of South Coastal Andhra Pradesh an attempt was made and analyzed the day, month, season and finally year wise rainfall forecasted by comparing with the actual rainfall data of Krishna, Guntur and Prakasam districts which are semi-arid under Krishna Agro-climatic zone of South Coastal Andhra Pradesh for the yearly mean of four years viz., 2015-16, 2016-17, 2017-18 and 2018-19 and that the correctness, usability and un-usability were analyzed by using the error structure technique and found that the yearly mean percent of correctness of the Krishna, Guntur and Prakasam districts were 86,89 and 85 respectively, usability were 7,6 and 8 and un-usability were 7, 5 and 7 respectively. Furthermore among the season wise analysis correctness of the rainfall forecast was better during summer and winter than rainy season.