期刊
GEOPHYSICAL RESEARCH LETTERS
卷 38, 期 -, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2011GL048821
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资金
- NSC [99-2628-M133-001, 100-2111-M-133-001]
- ONR [N000140810256, N000141010774]
- International Pacific Research Center
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
- NASA [NNX07AG53G]
- NOAA [NA17RJ1230]
This study examines the different impacts of two types of El Ninos, the eastern Pacific El Nino (EP-EN) and the central Pacific El Nino (CP-EN), on tropical cyclone (TC) tracks over the western North Pacific (WNP) based on observational data. Whereas TC tracks between CP-EN and EP-EN show a small difference in boreal summer (JJA), they do exhibit a great difference in boreal autumn (SON), that is, TCs recurve northward at a further westward location near the coastline of East Asia during CP-EN. As a consequence, more TCs make landfall to Taiwan and South China during CP-EN. A further observational analysis indicates that the westward shift of the subtropical high and associated steering flow during CP-EN is a key factor that causes the difference in the TC tracks in autumn. Numerical experiments further suggest that the difference of local SST in the WNP between CP-EN and EP-EN accounts for the distinctive differences in the local Hadley circulation, the subtropical high and the TC steering flow. Citation: Hong, C.-C., Y.-H. Li, T. Li, and M.-Y. Lee (2011), Impacts of central Pacific and eastern Pacific El Ninos on tropical cyclone tracks over the western North Pacific, Geophys. Res. Lett., 38, L16712, doi:10.1029/2011GL048821.
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