Rainfall analysis across the north east Indian state of Tripura

Saurav Saha Saurav Saha,Basant Kandpal Basant Kandpal,Burhan Uddin Choudhury Burhan Uddin Choudhury,P Lalhmachhuana P Lalhmachhuana,Debasish Chakraborty Debasish Chakraborty,Anup Das Anup Das,Dhiman Das Chauduri Dhiman Das Chauduri,Samik Chowdhury Samik Chowdhury,Mrinmoy Datta Mrinmoy Datta,Ingudam Shakuntala Ingudam Shakuntala,Gulav Singh Yadav Gulav Singh Yadav,Bappa Das Bappa Das,Lungmuana Lungmuana

doi:10.54386/jam.v23i4.181

Abstract

Rainfall analysis across the north east Indian state of Tripura

Highlights

The rainfall dataset from twelve rain gauge stations were available across Tripura from 1970 to 2016 (Fig. 1)
The variability in average annual rainfall ranged between 2153 mm (Agartala) to 2725 mm (Sabroom)
The Standardised Precipitation Index (SPI) was calculated for different timescales viz. 1 month (1-SPI), 2 months (2-SPI), 3 months (3-SPI), 4 months (4-SPI), 6 months (6-SPI), 12 months (12-SPI) and 24 months (24-SPI)

Summary

Introduction

The rainfall dataset from twelve rain gauge stations were available across Tripura from 1970 to 2016 (Fig. 1). Trend in seasonal and annual rainfall pattern (mean values) for four distinct seasons namely, winter (January–February), pre-monsoon (March-May), monsoon (June–September) and postmonsoon (October–December) months. The spatial distribution of identified seasonal and annual SPI trend was mapped under GIS environment (Arc GIS 9.3).

Results

Conclusion