The asymmetric response of Yangtze river basin summer rainfall to El Niño/La Niña
The Yangtze river basin, in South East China, experiences anomalously high precipitation in summers following El Niño. This can lead to extensive flooding and loss of life. However, the response following La Niña has not been well documented. In this study, the response of Yangtze summer rainfall to...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2018-01-01
|
| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/aaa172 |
| _version_ | 1827870756817600512 |
|---|---|
| author | Steven C Hardiman Nick J Dunstone Adam A Scaife Philip E Bett Chaofan Li Bo Lu Hong-Li Ren Doug M Smith Claudia C Stephan |
| author_facet | Steven C Hardiman Nick J Dunstone Adam A Scaife Philip E Bett Chaofan Li Bo Lu Hong-Li Ren Doug M Smith Claudia C Stephan |
| author_sort | Steven C Hardiman |
| collection | DOAJ |
| description | The Yangtze river basin, in South East China, experiences anomalously high precipitation in summers following El Niño. This can lead to extensive flooding and loss of life. However, the response following La Niña has not been well documented. In this study, the response of Yangtze summer rainfall to El Niño/La Niña is found to be asymmetric, with no significant response following La Niña. The nature of this asymmetric response is found to be in good agreement with that simulated by the Met Office seasonal forecast system. Yangtze summer rainfall correlates positively with spring sea surface temperatures in the Indian Ocean and northwest Pacific. Indian Ocean sea surface temperatures are found to respond linearly to El Niño/La Niña, and to have a linear impact on Yangtze summer rainfall. However, northwest Pacific sea surface temperatures respond much more strongly following El Niño and, further, correlate more strongly with positive rainfall years. It is concluded that, whilst delayed Indian Ocean signals may influence summer Yangtze rainfall, it is likely that they do not lead to the asymmetric nature of the rainfall response to El Niño/La Niña. |
| first_indexed | 2024-03-12T16:00:29Z |
| format | Article |
| id | doaj.art-4893c1d62f1e4459856c468c3bd858d9 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T16:00:29Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-4893c1d62f1e4459856c468c3bd858d92023-08-09T14:37:52ZengIOP PublishingEnvironmental Research Letters1748-93262018-01-0113202401510.1088/1748-9326/aaa172The asymmetric response of Yangtze river basin summer rainfall to El Niño/La NiñaSteven C Hardiman0https://orcid.org/0000-0001-9813-1209Nick J Dunstone1Adam A Scaife2Philip E Bett3https://orcid.org/0000-0002-4508-7192Chaofan Li4Bo Lu5Hong-Li Ren6Doug M Smith7Claudia C Stephan8Met Office , FitzRoy Road, Exeter, Devon, United Kingdom; Author to whom any correspondence should be addressed.Met Office , FitzRoy Road, Exeter, Devon, United KingdomMet Office , FitzRoy Road, Exeter, Devon, United Kingdom; College of Engineering, Mathematics and Physical Sciences, University of Exeter , Exeter, Devon, United KingdomMet Office , FitzRoy Road, Exeter, Devon, United KingdomCenter for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing, People’s Republic of ChinaLaboratory for Climate Studies, National Climate Center, China Meteorological Administration , Beijing, People’s Republic of ChinaLaboratory for Climate Studies, National Climate Center, China Meteorological Administration , Beijing, People’s Republic of ChinaMet Office , FitzRoy Road, Exeter, Devon, United KingdomDepartment of Meteorology, University of Reading , Reading, United KingdomThe Yangtze river basin, in South East China, experiences anomalously high precipitation in summers following El Niño. This can lead to extensive flooding and loss of life. However, the response following La Niña has not been well documented. In this study, the response of Yangtze summer rainfall to El Niño/La Niña is found to be asymmetric, with no significant response following La Niña. The nature of this asymmetric response is found to be in good agreement with that simulated by the Met Office seasonal forecast system. Yangtze summer rainfall correlates positively with spring sea surface temperatures in the Indian Ocean and northwest Pacific. Indian Ocean sea surface temperatures are found to respond linearly to El Niño/La Niña, and to have a linear impact on Yangtze summer rainfall. However, northwest Pacific sea surface temperatures respond much more strongly following El Niño and, further, correlate more strongly with positive rainfall years. It is concluded that, whilst delayed Indian Ocean signals may influence summer Yangtze rainfall, it is likely that they do not lead to the asymmetric nature of the rainfall response to El Niño/La Niña.https://doi.org/10.1088/1748-9326/aaa172seasonal forecastingYangtze basin rainfallENSOasymmetric rainfall responseIndian Ocean |
| spellingShingle | Steven C Hardiman Nick J Dunstone Adam A Scaife Philip E Bett Chaofan Li Bo Lu Hong-Li Ren Doug M Smith Claudia C Stephan The asymmetric response of Yangtze river basin summer rainfall to El Niño/La Niña Environmental Research Letters seasonal forecasting Yangtze basin rainfall ENSO asymmetric rainfall response Indian Ocean |
| title | The asymmetric response of Yangtze river basin summer rainfall to El Niño/La Niña |
| title_full | The asymmetric response of Yangtze river basin summer rainfall to El Niño/La Niña |
| title_fullStr | The asymmetric response of Yangtze river basin summer rainfall to El Niño/La Niña |
| title_full_unstemmed | The asymmetric response of Yangtze river basin summer rainfall to El Niño/La Niña |
| title_short | The asymmetric response of Yangtze river basin summer rainfall to El Niño/La Niña |
| title_sort | asymmetric response of yangtze river basin summer rainfall to el nino la nina |
| topic | seasonal forecasting Yangtze basin rainfall ENSO asymmetric rainfall response Indian Ocean |
| url | https://doi.org/10.1088/1748-9326/aaa172 |
| work_keys_str_mv | AT stevenchardiman theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT nickjdunstone theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT adamascaife theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT philipebett theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT chaofanli theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT bolu theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT hongliren theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT dougmsmith theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT claudiacstephan theasymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT stevenchardiman asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT nickjdunstone asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT adamascaife asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT philipebett asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT chaofanli asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT bolu asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT hongliren asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT dougmsmith asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina AT claudiacstephan asymmetricresponseofyangtzeriverbasinsummerrainfalltoelninolanina |