Spatial and temporal variability of seasonal precipitation in Poyang Lake basin and possible links with climate indices
Based on the precipitation data of 21 meteorological stations in Poyang Lake basin, the temporal and spatial variability of seasonal precipitation was analyzed by wavelet analysis method. This study adopted the cross wavelet transform to analyze the correlation between the seasonal precipitation and...
Published in: | Hydrology Research |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
IWA Publishing
2016
|
Subjects: | |
Online Access: | https://doi.org/10.2166/nh.2016.249 https://doaj.org/article/12e3255bc0e048cd88b85a50fb04bf9f |
id |
ftdoajarticles:oai:doaj.org/article:12e3255bc0e048cd88b85a50fb04bf9f |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:12e3255bc0e048cd88b85a50fb04bf9f 2023-05-15T17:34:34+02:00 Spatial and temporal variability of seasonal precipitation in Poyang Lake basin and possible links with climate indices Jun Shao Jun Wang Sunyun Lv Jianping Bing 2016-12-01T00:00:00Z https://doi.org/10.2166/nh.2016.249 https://doaj.org/article/12e3255bc0e048cd88b85a50fb04bf9f EN eng IWA Publishing http://hr.iwaponline.com/content/47/S1/51 https://doaj.org/toc/1998-9563 https://doaj.org/toc/2224-7955 1998-9563 2224-7955 doi:10.2166/nh.2016.249 https://doaj.org/article/12e3255bc0e048cd88b85a50fb04bf9f Hydrology Research, Vol 47, Iss S1, Pp 51-68 (2016) climate indices poyang lake basin seasonal precipitation wavelet analysis River lake and water-supply engineering (General) TC401-506 Physical geography GB3-5030 article 2016 ftdoajarticles https://doi.org/10.2166/nh.2016.249 2022-12-31T14:21:52Z Based on the precipitation data of 21 meteorological stations in Poyang Lake basin, the temporal and spatial variability of seasonal precipitation was analyzed by wavelet analysis method. This study adopted the cross wavelet transform to analyze the correlation between the seasonal precipitation and climate indices in time and frequency scales, discussed the possible links between its precipitation variations and climate indices, and preliminarily analyzed its mechanism and regular pattern of variation. The results showed that the oscillations in 2–4 years' and 4–8 years' bands were the main variation periods of seasonal precipitation in Poyang Lake basin. In the 2–4 years' band, the years of rainfall peaks appearing in Poyang Lake were basically consistent with the years when El Niño appeared, and the precipitation oscillations in summer appeared more dramatic in space. According to analysis on the cross wavelet power spectra between different seasonal rainfalls and climate indices, certain correlations between climate factors and seasonal precipitation had existed in specific time periods. Large-scale climate oscillations like the El Niño/Southern Oscillation, North Atlantic Oscillation, Indian Ocean Dipole, and Pacific Decadal Oscillation caused the variability of large-scale circulations through their respective independent or inter-coupled climate systems, and affected the precipitation distribution in Poyang Lake basin by changing local climate conditions like the East Asian Monsoon. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Pacific Indian Hydrology Research 47 S1 51 68 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
climate indices poyang lake basin seasonal precipitation wavelet analysis River lake and water-supply engineering (General) TC401-506 Physical geography GB3-5030 |
spellingShingle |
climate indices poyang lake basin seasonal precipitation wavelet analysis River lake and water-supply engineering (General) TC401-506 Physical geography GB3-5030 Jun Shao Jun Wang Sunyun Lv Jianping Bing Spatial and temporal variability of seasonal precipitation in Poyang Lake basin and possible links with climate indices |
topic_facet |
climate indices poyang lake basin seasonal precipitation wavelet analysis River lake and water-supply engineering (General) TC401-506 Physical geography GB3-5030 |
description |
Based on the precipitation data of 21 meteorological stations in Poyang Lake basin, the temporal and spatial variability of seasonal precipitation was analyzed by wavelet analysis method. This study adopted the cross wavelet transform to analyze the correlation between the seasonal precipitation and climate indices in time and frequency scales, discussed the possible links between its precipitation variations and climate indices, and preliminarily analyzed its mechanism and regular pattern of variation. The results showed that the oscillations in 2–4 years' and 4–8 years' bands were the main variation periods of seasonal precipitation in Poyang Lake basin. In the 2–4 years' band, the years of rainfall peaks appearing in Poyang Lake were basically consistent with the years when El Niño appeared, and the precipitation oscillations in summer appeared more dramatic in space. According to analysis on the cross wavelet power spectra between different seasonal rainfalls and climate indices, certain correlations between climate factors and seasonal precipitation had existed in specific time periods. Large-scale climate oscillations like the El Niño/Southern Oscillation, North Atlantic Oscillation, Indian Ocean Dipole, and Pacific Decadal Oscillation caused the variability of large-scale circulations through their respective independent or inter-coupled climate systems, and affected the precipitation distribution in Poyang Lake basin by changing local climate conditions like the East Asian Monsoon. |
format |
Article in Journal/Newspaper |
author |
Jun Shao Jun Wang Sunyun Lv Jianping Bing |
author_facet |
Jun Shao Jun Wang Sunyun Lv Jianping Bing |
author_sort |
Jun Shao |
title |
Spatial and temporal variability of seasonal precipitation in Poyang Lake basin and possible links with climate indices |
title_short |
Spatial and temporal variability of seasonal precipitation in Poyang Lake basin and possible links with climate indices |
title_full |
Spatial and temporal variability of seasonal precipitation in Poyang Lake basin and possible links with climate indices |
title_fullStr |
Spatial and temporal variability of seasonal precipitation in Poyang Lake basin and possible links with climate indices |
title_full_unstemmed |
Spatial and temporal variability of seasonal precipitation in Poyang Lake basin and possible links with climate indices |
title_sort |
spatial and temporal variability of seasonal precipitation in poyang lake basin and possible links with climate indices |
publisher |
IWA Publishing |
publishDate |
2016 |
url |
https://doi.org/10.2166/nh.2016.249 https://doaj.org/article/12e3255bc0e048cd88b85a50fb04bf9f |
geographic |
Pacific Indian |
geographic_facet |
Pacific Indian |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Hydrology Research, Vol 47, Iss S1, Pp 51-68 (2016) |
op_relation |
http://hr.iwaponline.com/content/47/S1/51 https://doaj.org/toc/1998-9563 https://doaj.org/toc/2224-7955 1998-9563 2224-7955 doi:10.2166/nh.2016.249 https://doaj.org/article/12e3255bc0e048cd88b85a50fb04bf9f |
op_doi |
https://doi.org/10.2166/nh.2016.249 |
container_title |
Hydrology Research |
container_volume |
47 |
container_issue |
S1 |
container_start_page |
51 |
op_container_end_page |
68 |
_version_ |
1766133439674712064 |