DOI: 10.1007/s11069-021-04523-0
论文题名: Spatiotemporal variability of multifractal properties of fineresolution daily gridded rainfall fields over India
作者: Sankaran A. ; Chavan S.R. ; Ali M. ; Sindhu A.D. ; Dharan D.S. ; Khan M.I.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期: 3 起始页码: 1951
结束页码: 1979
语种: 英语
中文关键词: Climate shift
; Complexity
; Correlation
; Multifractal
; Persistence
; Rainfall
英文关键词: correlation
; persistence
; precipitation (climatology)
; precipitation assessment
; rainfall
; spatial resolution
; spatiotemporal analysis
; terrain
; India
; Kerala
英文摘要: This study investigated the multifractal characteristics of fine resolution (0.25ox0.25°) daily gridded rainfall fields of India over the period 1901–2013 to examine their spatiotemporal variability. The scaling characterization using Multifractal Detrended Fluctuation Analysis (MFDFA) detected short-term persistency and strong multifractality in the majority of rainfall (over 81%) of the grid points. A detailed exploration on the spatial variability of multifractal properties such as Hurst exponent, spectral width, asymmetry index, Hölder exponent are also performed for six rainfall homogenous regions and 34 meteorological subdivisions in India. The results showed that the highest persistence and complexity is noted in the mountainous terrains of northern and northeastern India. The sub-divisional scale analysis showed that the variability of persistence and complexity is the highest in Kerala and lowest at Vidarbha. Further, the evaluation of multifractal properties of rainfall series of pre- and post-1976/77 Pacific climate shift showed an increase in strength of multifractality in 62% grids after the shift. Changes in the status of persistence with respect to 1976/77 is the highest at Uttaranchal subdivision and changes from positive to negative asymmetry was the highest at northwestern (NW) region. Grid points of Peninsular India exhibited least reduction in complexity, multifractality and persistence in the post-1977 period when compared to pre-1977 period. © 2021, Crown. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169342
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: TKM College of Engineering KollamKerala 691005, India; Indian Institute of Technology, Ropar, India; Deakin-SWU Joint Research Centre On Big Data, School of Information Technology, Deakin UniversityVIC 3125, Australia; University of Queensland, Brisbane, Australia
Recommended Citation:
Sankaran A.,Chavan S.R.,Ali M.,et al. Spatiotemporal variability of multifractal properties of fineresolution daily gridded rainfall fields over India[J]. Natural Hazards,2021-01-01,106(3)