Variability of seasonal precipitation extremes over China and their associations with large‐scale ocean–atmosphere oscillations
The spatiotemporal variations of seasonal precipitation extremes during 1963–2013 over China and the possible teleconnections with large‐scale ocean–atmosphere indices are investigated by using the rotated empirical orthogonal functions, cross‐correlation analysis and stepwise variable selection met...
Published in: | International Journal of Climatology |
---|---|
Main Authors: | , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2018
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/joc.5830 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.5830 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5830 |
id |
crwiley:10.1002/joc.5830 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/joc.5830 2024-06-23T07:50:50+00:00 Variability of seasonal precipitation extremes over China and their associations with large‐scale ocean–atmosphere oscillations Chen, Ajiao He, Xinguang Guan, Huade Zhang, Xinping National Natural Science Foundation of China 2018 http://dx.doi.org/10.1002/joc.5830 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.5830 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5830 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 39, issue 2, page 613-628 ISSN 0899-8418 1097-0088 journal-article 2018 crwiley https://doi.org/10.1002/joc.5830 2024-06-13T04:21:02Z The spatiotemporal variations of seasonal precipitation extremes during 1963–2013 over China and the possible teleconnections with large‐scale ocean–atmosphere indices are investigated by using the rotated empirical orthogonal functions, cross‐correlation analysis and stepwise variable selection methods. Results show that northwest China experiences the most frequent dry events but exhibits a wetting tendency in all seasons, while in south and central China, extreme wet conditions are remarkable in seasons except for winter but a drying tendency is found in spring and autumn. Precipitation extremes in four different seasons are influenced by the different combinations of large‐scale climate indices with different time lags, and their regional responses are complex when the climate indices are at different phases, such as winter heavy precipitation (R95p) in south of Nanling Mountain generally tends to be increased by the simultaneous positive El Niño–Southern Oscillation (ENSO) and sea surface temperature anomalies (SSTs) over South China Sea and positive Arctic Oscillation (AO) with 5‐month lag, while summer R95p in the middle and lower reaches of Yangtze River Basin be decreased by the simultaneous negative SSTs over Bay of Bengal and positive AO with 9‐month lag. Besides, the dominant climate indices identified by teleconnection analysis can partly explain the temporal changes of seasonal extreme precipitation in China, which can be confirmed by very similar fluctuation in the oscillatory patterns of eight chosen couples with higher correlation coefficient, and their explanation skill is more powerful in sensitive areas highlighted in the leading spatial modes of corresponding precipitation index. Moreover, this explanation skill generally enhances as the cumulative contribution of leading four rotated modes to total variance of the target variable over whole study area increases. In addition, the precipitation indices related to precipitation amount can be better explained than those related to wet or dry ... Article in Journal/Newspaper Arctic Wiley Online Library Arctic Over Bay ENVELOPE(-108.468,-108.468,55.933,55.933) International Journal of Climatology 39 2 613 628 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The spatiotemporal variations of seasonal precipitation extremes during 1963–2013 over China and the possible teleconnections with large‐scale ocean–atmosphere indices are investigated by using the rotated empirical orthogonal functions, cross‐correlation analysis and stepwise variable selection methods. Results show that northwest China experiences the most frequent dry events but exhibits a wetting tendency in all seasons, while in south and central China, extreme wet conditions are remarkable in seasons except for winter but a drying tendency is found in spring and autumn. Precipitation extremes in four different seasons are influenced by the different combinations of large‐scale climate indices with different time lags, and their regional responses are complex when the climate indices are at different phases, such as winter heavy precipitation (R95p) in south of Nanling Mountain generally tends to be increased by the simultaneous positive El Niño–Southern Oscillation (ENSO) and sea surface temperature anomalies (SSTs) over South China Sea and positive Arctic Oscillation (AO) with 5‐month lag, while summer R95p in the middle and lower reaches of Yangtze River Basin be decreased by the simultaneous negative SSTs over Bay of Bengal and positive AO with 9‐month lag. Besides, the dominant climate indices identified by teleconnection analysis can partly explain the temporal changes of seasonal extreme precipitation in China, which can be confirmed by very similar fluctuation in the oscillatory patterns of eight chosen couples with higher correlation coefficient, and their explanation skill is more powerful in sensitive areas highlighted in the leading spatial modes of corresponding precipitation index. Moreover, this explanation skill generally enhances as the cumulative contribution of leading four rotated modes to total variance of the target variable over whole study area increases. In addition, the precipitation indices related to precipitation amount can be better explained than those related to wet or dry ... |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Chen, Ajiao He, Xinguang Guan, Huade Zhang, Xinping |
spellingShingle |
Chen, Ajiao He, Xinguang Guan, Huade Zhang, Xinping Variability of seasonal precipitation extremes over China and their associations with large‐scale ocean–atmosphere oscillations |
author_facet |
Chen, Ajiao He, Xinguang Guan, Huade Zhang, Xinping |
author_sort |
Chen, Ajiao |
title |
Variability of seasonal precipitation extremes over China and their associations with large‐scale ocean–atmosphere oscillations |
title_short |
Variability of seasonal precipitation extremes over China and their associations with large‐scale ocean–atmosphere oscillations |
title_full |
Variability of seasonal precipitation extremes over China and their associations with large‐scale ocean–atmosphere oscillations |
title_fullStr |
Variability of seasonal precipitation extremes over China and their associations with large‐scale ocean–atmosphere oscillations |
title_full_unstemmed |
Variability of seasonal precipitation extremes over China and their associations with large‐scale ocean–atmosphere oscillations |
title_sort |
variability of seasonal precipitation extremes over china and their associations with large‐scale ocean–atmosphere oscillations |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/joc.5830 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.5830 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5830 |
long_lat |
ENVELOPE(-108.468,-108.468,55.933,55.933) |
geographic |
Arctic Over Bay |
geographic_facet |
Arctic Over Bay |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
International Journal of Climatology volume 39, issue 2, page 613-628 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.5830 |
container_title |
International Journal of Climatology |
container_volume |
39 |
container_issue |
2 |
container_start_page |
613 |
op_container_end_page |
628 |
_version_ |
1802641773949878272 |