Boreal Summer Intraseasonal Oscillation Impact on Western North Pacific Typhoons and Rainfall in Taiwan
This study discusses the boreal summer intraseasonal oscillation (BSISO) impact on the western North Pacific (WNP) typhoons and the summer rainfall in Taiwan. The real time BSISO1 and BISISO2 indices are created using the first two and the third and fourth principal components of the multivariate em...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2016-01-01
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| Series: | Terrestrial, Atmospheric and Oceanic Sciences |
| Online Access: |
http://tao.cgu.org.tw/media/k2/attachments/v276p893.pdf
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| _version_ | 1811338046634721280 |
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| author | Chih-wen Hung Ho-Jiunn Lin Pei-ken Kao Ming-fu Shih Wei-yi Fong |
| author_facet | Chih-wen Hung Ho-Jiunn Lin Pei-ken Kao Ming-fu Shih Wei-yi Fong |
| author_sort | Chih-wen Hung |
| collection | DOAJ |
| description | This study discusses the boreal summer intraseasonal oscillation (BSISO) impact on the western North Pacific (WNP) typhoons and the summer rainfall in Taiwan. The real time BSISO1 and BISISO2 indices are created using the first two and the third and fourth principal components of the multivariate empirical orthogonal function analysis, based on outgoing long-wave radiation and zonal wind at 850 hPa from Lee et al. (2013). The results show that heavy rainfall in Taiwan and the associated WNP typhoon frequency patterns are closely related to the 10 - 30 days BSISO2 phases during the typhoon season (July - October). Taiwan has larger rainfall during BSISO2 phases 3, 4, and 5 when the major BSISO2 convection moves northwestward from the Philippine Sea to the Taiwan area. During phases 3 and 4 the anomalous low-level cyclonic flow and the increased typhoon frequency directly result in larger rainfall in Taiwan. Phase 5 exhibits enhanced low-level southwesterly flow which transports the moisture to Taiwan responsible for more summer rainfall on the island. |
| first_indexed | 2024-04-13T18:05:07Z |
| format | Article |
| id | doaj.art-f73a163c165e45b8940ade45557985aa |
| institution | Directory Open Access Journal |
| issn | 1017-0839 2311-7680 |
| language | English |
| last_indexed | 2024-04-13T18:05:07Z |
| publishDate | 2016-01-01 |
| publisher | Springer |
| record_format | Article |
| series | Terrestrial, Atmospheric and Oceanic Sciences |
| spelling | doaj.art-f73a163c165e45b8940ade45557985aa2022-12-22T02:36:07ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802016-01-0127689310.3319/TAO.2016.05.30.01(A)Boreal Summer Intraseasonal Oscillation Impact on Western North Pacific Typhoons and Rainfall in TaiwanChih-wen HungHo-Jiunn LinPei-ken KaoMing-fu ShihWei-yi FongThis study discusses the boreal summer intraseasonal oscillation (BSISO) impact on the western North Pacific (WNP) typhoons and the summer rainfall in Taiwan. The real time BSISO1 and BISISO2 indices are created using the first two and the third and fourth principal components of the multivariate empirical orthogonal function analysis, based on outgoing long-wave radiation and zonal wind at 850 hPa from Lee et al. (2013). The results show that heavy rainfall in Taiwan and the associated WNP typhoon frequency patterns are closely related to the 10 - 30 days BSISO2 phases during the typhoon season (July - October). Taiwan has larger rainfall during BSISO2 phases 3, 4, and 5 when the major BSISO2 convection moves northwestward from the Philippine Sea to the Taiwan area. During phases 3 and 4 the anomalous low-level cyclonic flow and the increased typhoon frequency directly result in larger rainfall in Taiwan. Phase 5 exhibits enhanced low-level southwesterly flow which transports the moisture to Taiwan responsible for more summer rainfall on the island. http://tao.cgu.org.tw/media/k2/attachments/v276p893.pdf |
| spellingShingle | Chih-wen Hung Ho-Jiunn Lin Pei-ken Kao Ming-fu Shih Wei-yi Fong Boreal Summer Intraseasonal Oscillation Impact on Western North Pacific Typhoons and Rainfall in Taiwan Terrestrial, Atmospheric and Oceanic Sciences |
| title | Boreal Summer Intraseasonal Oscillation Impact on Western North Pacific Typhoons and Rainfall in Taiwan |
| title_full | Boreal Summer Intraseasonal Oscillation Impact on Western North Pacific Typhoons and Rainfall in Taiwan |
| title_fullStr | Boreal Summer Intraseasonal Oscillation Impact on Western North Pacific Typhoons and Rainfall in Taiwan |
| title_full_unstemmed | Boreal Summer Intraseasonal Oscillation Impact on Western North Pacific Typhoons and Rainfall in Taiwan |
| title_short | Boreal Summer Intraseasonal Oscillation Impact on Western North Pacific Typhoons and Rainfall in Taiwan |
| title_sort | boreal summer intraseasonal oscillation impact on western north pacific typhoons and rainfall in taiwan |
| url |
http://tao.cgu.org.tw/media/k2/attachments/v276p893.pdf
|
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