Southwest monsoon rainfall in Assam: An application of principal component analysis for understanding of variability

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Abstract

The principal component analysis (PCA) is applied to understand the spatial and temporal variability of monsoonal rainfall in the state Assam in India. The Southwest Monsoon (SWM) rainfall data over 12 widely spread stations located over the state has been analyzed for a period of 60 years for understanding variability. A statistically significant trend and a above/below transition signal has been observed for a few stations and the corresponding principal components (PCs). Coherent regions of Northern and Southern Assam have been identified through PCA to bring out the possible significant signals. It is observed that some of PCs for state-wise and coherent regions have positive or negative trend and significant above/below transition.

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APA

Basak, P. (2017). Southwest monsoon rainfall in Assam: An application of principal component analysis for understanding of variability. Mausam, 68(2), 357–366. https://doi.org/10.54302/mausam.v68i2.638

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