Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach
A better understanding of precipitation dynamics in the Indian subcontinent is required since India's society depends heavily on reliable monsoon forecasts. We introduce a non-linear, multiscale approach, based on wavelets and event synchronization, for unravelling teleconnection influences on...
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ftdoajarticles:oai:doaj.org/article:22fab50b064b488096fd62bba737ac9c 2023-05-15T17:33:27+02:00 Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach J. Kurths A. Agarwal R. Shukla N. Marwan M. Rathinasamy L. Caesar R. Krishnan B. Merz 2019-08-01T00:00:00Z https://doi.org/10.5194/npg-26-251-2019 https://doaj.org/article/22fab50b064b488096fd62bba737ac9c EN eng Copernicus Publications https://www.nonlin-processes-geophys.net/26/251/2019/npg-26-251-2019.pdf https://doaj.org/toc/1023-5809 https://doaj.org/toc/1607-7946 doi:10.5194/npg-26-251-2019 1023-5809 1607-7946 https://doaj.org/article/22fab50b064b488096fd62bba737ac9c Nonlinear Processes in Geophysics, Vol 26, Pp 251-266 (2019) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2019 ftdoajarticles https://doi.org/10.5194/npg-26-251-2019 2022-12-31T00:03:40Z A better understanding of precipitation dynamics in the Indian subcontinent is required since India's society depends heavily on reliable monsoon forecasts. We introduce a non-linear, multiscale approach, based on wavelets and event synchronization, for unravelling teleconnection influences on precipitation. We consider those climate patterns with the highest relevance for Indian precipitation. Our results suggest significant influences which are not well captured by only the wavelet coherence analysis, the state-of-the-art method in understanding linkages at multiple timescales. We find substantial variation across India and across timescales. In particular, El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) mainly influence precipitation in the south-east at interannual and decadal scales, respectively, whereas the North Atlantic Oscillation (NAO) has a strong connection to precipitation, particularly in the northern regions. The effect of the Pacific Decadal Oscillation (PDO) stretches across the whole country, whereas the Atlantic Multidecadal Oscillation (AMO) influences precipitation particularly in the central arid and semi-arid regions. The proposed method provides a powerful approach for capturing the dynamics of precipitation and, hence, helps improve precipitation forecasting. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Indian Pacific Nonlinear Processes in Geophysics 26 3 251 266 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 J. Kurths A. Agarwal R. Shukla N. Marwan M. Rathinasamy L. Caesar R. Krishnan B. Merz Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
A better understanding of precipitation dynamics in the Indian subcontinent is required since India's society depends heavily on reliable monsoon forecasts. We introduce a non-linear, multiscale approach, based on wavelets and event synchronization, for unravelling teleconnection influences on precipitation. We consider those climate patterns with the highest relevance for Indian precipitation. Our results suggest significant influences which are not well captured by only the wavelet coherence analysis, the state-of-the-art method in understanding linkages at multiple timescales. We find substantial variation across India and across timescales. In particular, El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) mainly influence precipitation in the south-east at interannual and decadal scales, respectively, whereas the North Atlantic Oscillation (NAO) has a strong connection to precipitation, particularly in the northern regions. The effect of the Pacific Decadal Oscillation (PDO) stretches across the whole country, whereas the Atlantic Multidecadal Oscillation (AMO) influences precipitation particularly in the central arid and semi-arid regions. The proposed method provides a powerful approach for capturing the dynamics of precipitation and, hence, helps improve precipitation forecasting. |
format |
Article in Journal/Newspaper |
author |
J. Kurths A. Agarwal R. Shukla N. Marwan M. Rathinasamy L. Caesar R. Krishnan B. Merz |
author_facet |
J. Kurths A. Agarwal R. Shukla N. Marwan M. Rathinasamy L. Caesar R. Krishnan B. Merz |
author_sort |
J. Kurths |
title |
Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach |
title_short |
Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach |
title_full |
Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach |
title_fullStr |
Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach |
title_full_unstemmed |
Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach |
title_sort |
unravelling the spatial diversity of indian precipitation teleconnections via a non-linear multi-scale approach |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/npg-26-251-2019 https://doaj.org/article/22fab50b064b488096fd62bba737ac9c |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Nonlinear Processes in Geophysics, Vol 26, Pp 251-266 (2019) |
op_relation |
https://www.nonlin-processes-geophys.net/26/251/2019/npg-26-251-2019.pdf https://doaj.org/toc/1023-5809 https://doaj.org/toc/1607-7946 doi:10.5194/npg-26-251-2019 1023-5809 1607-7946 https://doaj.org/article/22fab50b064b488096fd62bba737ac9c |
op_doi |
https://doi.org/10.5194/npg-26-251-2019 |
container_title |
Nonlinear Processes in Geophysics |
container_volume |
26 |
container_issue |
3 |
container_start_page |
251 |
op_container_end_page |
266 |
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1766131964592521216 |