Impacts of two types of El-Niño on the winter North Pacific storm track
In the present study, the impacts of eastern Pacific (EP) and central Pacific El-Niño on the winter North Pacific storm track (WNPST) are investigated, and the possible reasons for the different responses of the WNPST to the two types of El-Niño are revealed. It is found that only EP El-Niño episode...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/aba65f |
| _version_ | 1827870401295810560 |
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| author | Minghao Yang Chongyin Li Yanke Tan Xin Li Xiong Chen |
| author_facet | Minghao Yang Chongyin Li Yanke Tan Xin Li Xiong Chen |
| author_sort | Minghao Yang |
| collection | DOAJ |
| description | In the present study, the impacts of eastern Pacific (EP) and central Pacific El-Niño on the winter North Pacific storm track (WNPST) are investigated, and the possible reasons for the different responses of the WNPST to the two types of El-Niño are revealed. It is found that only EP El-Niño episodes have a distinct influence on the strength and movement of the WNPST. During EP El-Niño episodes, the WNPST is significantly enhanced and extended equatorward. The patterns of atmospheric baroclinicity anomalies are consistent during the two types of El-Niño. The enhancement and equatorward extension of the WNPST during EP El-Niño episodes can be attributed to anomalous baroclinic energy conversion. In addition, EP El-Niño episodes can also intensify the strength of the WNPST by warming the lower-tropospheric air upstream of the WNPST, which generates more synoptic-scale disturbances entering the WNPST. |
| first_indexed | 2024-03-12T15:56:18Z |
| format | Article |
| id | doaj.art-02db9cd077d74a4794c7d76b9222287f |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:56:18Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-02db9cd077d74a4794c7d76b9222287f2023-08-09T14:53:06ZengIOP PublishingEnvironmental Research Letters1748-93262020-01-0115909406210.1088/1748-9326/aba65fImpacts of two types of El-Niño on the winter North Pacific storm trackMinghao Yang0https://orcid.org/0000-0003-1298-2307Chongyin Li1Yanke Tan2Xin Li3Xiong Chen4https://orcid.org/0000-0003-0067-8420College of Meteorology and Oceanography, National University of Defense Technology , Nanjing 211101, People’s Republic of ChinaCollege of Meteorology and Oceanography, National University of Defense Technology , Nanjing 211101, People’s Republic of China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing 100029, People’s Republic of ChinaDepartment of Atmospheric and Oceanic Science & Institute of Atmospheric Sciences, Fudan University , Shanghai 200433, People’s Republic of ChinaCollege of Meteorology and Oceanography, National University of Defense Technology , Nanjing 211101, People’s Republic of ChinaCollege of Meteorology and Oceanography, National University of Defense Technology , Nanjing 211101, People’s Republic of ChinaIn the present study, the impacts of eastern Pacific (EP) and central Pacific El-Niño on the winter North Pacific storm track (WNPST) are investigated, and the possible reasons for the different responses of the WNPST to the two types of El-Niño are revealed. It is found that only EP El-Niño episodes have a distinct influence on the strength and movement of the WNPST. During EP El-Niño episodes, the WNPST is significantly enhanced and extended equatorward. The patterns of atmospheric baroclinicity anomalies are consistent during the two types of El-Niño. The enhancement and equatorward extension of the WNPST during EP El-Niño episodes can be attributed to anomalous baroclinic energy conversion. In addition, EP El-Niño episodes can also intensify the strength of the WNPST by warming the lower-tropospheric air upstream of the WNPST, which generates more synoptic-scale disturbances entering the WNPST.https://doi.org/10.1088/1748-9326/aba65ftwo types of El-Niñowinter North Pacific storm trackatmospheric baroclinicitybaroclinic energy conversion |
| spellingShingle | Minghao Yang Chongyin Li Yanke Tan Xin Li Xiong Chen Impacts of two types of El-Niño on the winter North Pacific storm track Environmental Research Letters two types of El-Niño winter North Pacific storm track atmospheric baroclinicity baroclinic energy conversion |
| title | Impacts of two types of El-Niño on the winter North Pacific storm track |
| title_full | Impacts of two types of El-Niño on the winter North Pacific storm track |
| title_fullStr | Impacts of two types of El-Niño on the winter North Pacific storm track |
| title_full_unstemmed | Impacts of two types of El-Niño on the winter North Pacific storm track |
| title_short | Impacts of two types of El-Niño on the winter North Pacific storm track |
| title_sort | impacts of two types of el nino on the winter north pacific storm track |
| topic | two types of El-Niño winter North Pacific storm track atmospheric baroclinicity baroclinic energy conversion |
| url | https://doi.org/10.1088/1748-9326/aba65f |
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