The effects of intraseasonal oscillations on landfalling tropical cyclones in the Philippines during the boreal summer
As a kind of weather phenomenon with destructive wind and heavy rainfall, tropical cyclones (TCs), especially the landing TCs, can cause severer economic damage and losses of life. Philippines is one of the countries mostly affected by Tropical cyclones (TCs). Based on the best-track TC data and glo...
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| Format: | Article |
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1106291/full |
| _version_ | 1827942641836228608 |
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| author | Peicong Wu Zheng Ling Zheng Ling Zheng Ling Hailun He |
| author_facet | Peicong Wu Zheng Ling Zheng Ling Zheng Ling Hailun He |
| author_sort | Peicong Wu |
| collection | DOAJ |
| description | As a kind of weather phenomenon with destructive wind and heavy rainfall, tropical cyclones (TCs), especially the landing TCs, can cause severer economic damage and losses of life. Philippines is one of the countries mostly affected by Tropical cyclones (TCs). Based on the best-track TC data and global atmospheric and oceanic reanalysis data, the present paper investigates the isolated and combined effects of two intraseasonal oscillations, the Madden-Julian oscillation (MJO) and the quasi-biweekly oscillation (QBWO), on landfall of TCs in the Philippines during boreal summer (May-September) in 1979-2019. The results show that both the MJO and the QBWO can significantly affect the frequency, landfall intensity, location, and translation speed of TCs that make landfall in the Philippines. During the convective (non-convective) phases of the MJO and the QBWO, more (less) frequent and stronger (weaker) TCs make landfall in the Philippines. This is due to the increased (decreased) frequency of TCs formation in the NWP and environmental factors in the region east of the Philippines that are favorable (unfavorable) for the development of TCs. With the northward propagation of the convective signals of the MJO and QBWO, the Western Pacific Subtropical High (WPSH) shifts eastward, and the steering flow is unfavorable for westward movement of NWP TCs. This, in turn, causes a northward shift in the landfall locations and a decrease in the translation speed of TCs. These results are helpful for the prediction of the TCs affecting the Philippines. |
| first_indexed | 2024-03-13T10:02:13Z |
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| id | doaj.art-6e9baa3ad60a45f896e267489d743c64 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-13T10:02:13Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-6e9baa3ad60a45f896e267489d743c642023-05-23T04:41:16ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-05-011110.3389/feart.2023.11062911106291The effects of intraseasonal oscillations on landfalling tropical cyclones in the Philippines during the boreal summerPeicong Wu0Zheng Ling1Zheng Ling2Zheng Ling3Hailun He4Key Laboratory of Climate, Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong Province, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory of Climate, Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong Province, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, ChinaState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, ChinaState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, ChinaAs a kind of weather phenomenon with destructive wind and heavy rainfall, tropical cyclones (TCs), especially the landing TCs, can cause severer economic damage and losses of life. Philippines is one of the countries mostly affected by Tropical cyclones (TCs). Based on the best-track TC data and global atmospheric and oceanic reanalysis data, the present paper investigates the isolated and combined effects of two intraseasonal oscillations, the Madden-Julian oscillation (MJO) and the quasi-biweekly oscillation (QBWO), on landfall of TCs in the Philippines during boreal summer (May-September) in 1979-2019. The results show that both the MJO and the QBWO can significantly affect the frequency, landfall intensity, location, and translation speed of TCs that make landfall in the Philippines. During the convective (non-convective) phases of the MJO and the QBWO, more (less) frequent and stronger (weaker) TCs make landfall in the Philippines. This is due to the increased (decreased) frequency of TCs formation in the NWP and environmental factors in the region east of the Philippines that are favorable (unfavorable) for the development of TCs. With the northward propagation of the convective signals of the MJO and QBWO, the Western Pacific Subtropical High (WPSH) shifts eastward, and the steering flow is unfavorable for westward movement of NWP TCs. This, in turn, causes a northward shift in the landfall locations and a decrease in the translation speed of TCs. These results are helpful for the prediction of the TCs affecting the Philippines.https://www.frontiersin.org/articles/10.3389/feart.2023.1106291/fullPhilippinestropical cyclonesMadden-Julian oscillationquasi-biweekly oscillationwestern Pacific subtropical high |
| spellingShingle | Peicong Wu Zheng Ling Zheng Ling Zheng Ling Hailun He The effects of intraseasonal oscillations on landfalling tropical cyclones in the Philippines during the boreal summer Frontiers in Earth Science Philippines tropical cyclones Madden-Julian oscillation quasi-biweekly oscillation western Pacific subtropical high |
| title | The effects of intraseasonal oscillations on landfalling tropical cyclones in the Philippines during the boreal summer |
| title_full | The effects of intraseasonal oscillations on landfalling tropical cyclones in the Philippines during the boreal summer |
| title_fullStr | The effects of intraseasonal oscillations on landfalling tropical cyclones in the Philippines during the boreal summer |
| title_full_unstemmed | The effects of intraseasonal oscillations on landfalling tropical cyclones in the Philippines during the boreal summer |
| title_short | The effects of intraseasonal oscillations on landfalling tropical cyclones in the Philippines during the boreal summer |
| title_sort | effects of intraseasonal oscillations on landfalling tropical cyclones in the philippines during the boreal summer |
| topic | Philippines tropical cyclones Madden-Julian oscillation quasi-biweekly oscillation western Pacific subtropical high |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1106291/full |
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