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http://krishi.icar.gov.in/jspui/handle/123456789/43005| Title: | Wavelets based estimation of trend in sub-divisional rainfall in India |
| Other Titles: | Not Available |
| Authors: | R.K.Paul S. Sarkar D. Mitra S. Panwar A.K. Paul L.M. Bhar |
| ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
| Author's Affiliated institute: | ICAR::Indian Agricultural Statistics Research Institute |
| Published/ Complete Date: | 2020-01-01 |
| Project Code: | Not Available |
| Keywords: | Haar filter Long memory Mann-Kendall test Trend Wavelets |
| Publisher: | Not Available |
| Citation: | Ranjit Kumar Paul, Sandipan Sarkar, Dipankar Mitra, Sanjeev Panwar*, A. K. Paul And L. M. Bhar (2020). Wavelets based estimation of trend in sub-divisional rainfall in India, MAUSAM, 71(1), 69-78 |
| Series/Report no.: | Not Available; |
| Abstract/Description: | Presence of long memory in climatic variables is frequently observed. The trend assessment becomes difficult in the presence of long-memory as the usual methods are not capable to take care of this property during trend estimation. In order to estimate the trend in presence of long memory, the non-parametric wavelet method has become popular in the recent time. The discrete wavelet transformation (DWT) re-expresses a time-series in terms of coefficients that are associated with a particular time and a particular scale. In the present study, DWT has been applied to estimate the monthly rainfall trend for the monsoon months: June-September in ten selected sub-divisions of India using “Haar” wavelet filter. The results from DWT were cross checked with the non-parametric Mann-Kendall (M-K) test. The investigation reveals that the monthly rainfall trend for the monsoon months of different sub-divisions in India are significantly decreasing over the years. However, in some of the sub-divisions, rainfall trend is increasing. DWT reveals significant trend in most of the sub-divisions whereas M-K test reveals that most of the trends are not significant at 5% level |
| Description: | Not Available |
| ISSN: | Not Available |
| Type(s) of content: | Research Paper |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | Mausam |
| NAAS Rating: | 6.57 |
| Volume No.: | 71 (1) |
| Page Number: | 551-560 |
| Name of the Division/Regional Station: | Not Available |
| Source, DOI or any other URL: | Not Available |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/43005 |
| Appears in Collections: | AEdu-IASRI-Publication |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 17117_F.pdf | 2.21 MB | Adobe PDF | View/Open |
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