Multifractality and singularity in average temperature and dew point across India
Journal: International Journal of Advanced Technology and Engineering Exploration (IJATEE) (Vol.5, No. 43)Publication Date: 2018-06-22
Authors : Rajdeep Ray Siddhartha Dey Mofazzal Hossain Khondekar; Koushik Ghosh;
Page : 107-117
Keywords : Indian climate; Time series analysis; Multifractal detrended fluctuation analysis; Wavelet transform modulus maxima (WTMM); Continuous wavelet transform (CWT); Wavelet shrinkage; Hӧlder exponent; Hausdorff dimension; Singularity spectrum.;
Abstract
In the present work we have taken into account the observations of daily temperature and dew point of seven different stations viz. Kolkata, Ahmedabad, Bhopal, Agartala, Mumbai, Chennai and New Delhi. Here the spatial average of temperature and dew point of these seven stations are the signals under observation. A thorough analysis has been made to examine the multifractality and singularity within the signals. The multifractal detrended fluctuation analysis (MFDFA) and wavelet transform modulus maxima (WTMM) based on continuous wavelet transform method are being exploited to serve the present purpose. The results reveal multifractal nature of the present signals.
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Last modified: 2018-08-06 18:05:51