Environment and Ecology Research Vol. 11(5), pp. 779 - 791
DOI: 10.13189/eer.2023.110508
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Rainfall Analysis of Haryana State, India: A Regional Frequency Analysis Approach

Minakshi Sharma ¹, Rashi Jarial ¹, Mohit Nain ¹, A. K. Awasthi ^1,*, Owais Aalam ¹, Bhanu Pratap ^2
1 School of Chemical Engineering and Physical Sciences, Lovely Professional University, India
² Haryana Space Applications Centre (HARSAC), CCS HAU, Hisar, India

ABSTRACT

The present study deals with the regional frequency analysis approach to analyzing rainfall data of Haryana state. From all over Haryana, 29 rain gauge stations were selected based on data availability. These stations were clustered into three groups namely, G1, G2, and G3 with the help of Ward's method. L-moments-based Heterogeneity test (H) was used to test the region's homogeneity and for each station, a discordancy measure (D_i) was calculated. Results of H test showed that all three groups were homogeneous and indicated that there was no discordant station in each group. Best-fit distribution was chosen using a goodness-of-fit measure (Z ^DIST) and L-moment ratios diagram. Results of these tests showed that Pearson type-3 (PE-3) was the best-fitted distribution for group G1 and Generalized Extreme Value (GEV) and Generalized Normal (GNO) were the best for group G2, while for group G3, GNO was the best-fitted distribution. Using the L-moments method, the parameters of the fitted distributions were estimated, and regional growth curves were generated for each homogenous group. Regional growth curves provided regional quantiles at various return periods for each group. Further, quantiles were estimated at each station using regional quantiles by taking the station's mean as a scaling factor. The results showed that estimated quantiles using the best-fit distribution were in close agreement with observed data.

KEYWORDS
Annual Total Rainfall, Haryana, L-Moments, Quantiles, Growth Curve

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Minakshi Sharma , Rashi Jarial , Mohit Nain , A. K. Awasthi , Owais Aalam , Bhanu Pratap , "Rainfall Analysis of Haryana State, India: A Regional Frequency Analysis Approach," Environment and Ecology Research, Vol. 11, No. 5, pp. 779 - 791, 2023. DOI: 10.13189/eer.2023.110508.

(b). APA Format:
Minakshi Sharma , Rashi Jarial , Mohit Nain , A. K. Awasthi , Owais Aalam , Bhanu Pratap (2023). Rainfall Analysis of Haryana State, India: A Regional Frequency Analysis Approach. Environment and Ecology Research, 11(5), 779 - 791. DOI: 10.13189/eer.2023.110508.