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Interannual variation of the Philippines affecting tropical cyclone intensity and its possible causes


This study analyzed changes in tropical cyclone (TC) intensity for the past 62 years (1951–2012) by calculating annual average value of central pressure (CP) of TCs that affected the Philippines from July to September. Although TC intensity slightly weakened for the last 62 years, it was not statistically significant. In order to examine the causes of changes in intensity of TCs that influenced the Philippines, nine low CP years and nine high CP years among the 62 years were selected to analyze differences between the two groups. TCs largely occurred in the southeastern quadrant of tropical and subtropical western North Pacific during low CP years and tended to move to the Philippines from the far sea in the southeast of the nation. In differences in deep-layer-mean wind between the two groups, western North Pacific subtropical high (WNPSH) did not develop toward the middle latitudes of East Asia but toward the low latitudes of the region during low CP years. Therefore, TCs occurred in the southeastern quadrant of tropical and subtropical western North Pacific, triggering its movement of long distance westward toward the Philippines. As positive anomalies in precipitable water and at 600 hPa relative humidity, 850 hPa air temperature, and sea surface temperature continued to the Philippines from the southeastern quadrant, a favorable environment where intensity of TCs can be strengthened while they move to the Philippines during low CP years has been formed. In the end, because WNPSH developed toward the low latitudes during low CP years, anomalous easterlies that strengthened in the southern regions of WNPSH blew to the Philippines, and SST in the sea near the nation was heightened. Therefore, because TCs were able to obtain sufficient energy from the relatively warm sea while TCs moved a long distance to the Philippines, TC intensity was able to be strengthened.

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  1. Chan JCL, Gray WM (1982) Tropical cyclone movement and surrounding flow relationships. Mon Weather Rev 110:1354–1374

    Article  Google Scholar 

  2. Choi KS, Wu CC, Byun HR (2012) Possible connection between summer tropical cyclone frequency and spring arctic oscillation over East Asia. Clim Dyn 38:2613–2629

    Article  Google Scholar 

  3. Chu PS, Clark JD (1999) Decadal variations of tropical cyclone activity over the central North Pacific. Bull Am Meteorol Soc 80:1875–1881

    Article  Google Scholar 

  4. Emanuel K (2005) Increasing destructiveness of tropical cyclones over the past 30 years. Nature 436:686–688

    Article  Google Scholar 

  5. George JE, Gray WM (1976) Tropical cyclone motion and surrounding parameter relationships. J Appl Meteorol 15:1252–1264

    Article  Google Scholar 

  6. Graham NE (1994) Decadal-scale climate variability in the tropical and North Pacific during the 1970s and 1980s: observations and model results. Clim Dyn 10:135–162

    Article  Google Scholar 

  7. Ho CH, Baik JJ, Kim JH, Gong DY (2004) Interdecadal changes in summertime typhoon tracks. J Clim 17:1767–1776

    Article  Google Scholar 

  8. Ho CH, Kim JH, Kim HS, Sui CH, Gong DY (2005) Possible influence of the antarctic oscillation on tropical cyclone activity in the western North Pacific. J Geophy Res 110: doi:10.1029/2005JD005766

  9. Kalnay E (1996) The NCEP/NCAR 40-year reanalysis project. Bull Am Meteorol Soc 77:437–471

    Article  Google Scholar 

  10. Kistler R (2001) The NCEP/NCAR 50-year reanalysis. Bull Am Meteorol Soc 82:247–267

    Article  Google Scholar 

  11. Knutson TR (2010) Tropical cyclones and climate change. Nat Geosci 3:157–163

    Article  Google Scholar 

  12. Kubota H, Chan JCL (2009) Interdecadal variability of tropical cyclone landfall in the Philippines from 1902 to 2005. Geophy Res Let 36:10.1029/2009GL038108

  13. Landsea CW (2007) Counting Atlantic tropical cyclones back to 1900. Eos 88:197–208

    Article  Google Scholar 

  14. Mantua NJ, Hare SR, Zhang Y, Wallace JM, Francis RC (1997) A Pacific interdecadal oscillation with impacts on salmon production. Bull Am Meteorol Soc 78:1069–1079

    Article  Google Scholar 

  15. NOAA National Climatic Data Center (2013) State of the climate: hurricanes and tropical storms for annual 2013

  16. Nitta T, Yamada S (1989) Recent warming of tropical sea surface temperature and its relationship to the Northern Hemisphere circulation. J Meteorol Soc Jpn 67:375–383

    Google Scholar 

  17. Reynolds RW, Rayner NA, Smith TM, Stokes DC, Wang W (2002) An improved in situ and satellite SST analysis for climate. J Clim 15:1609–1625

    Article  Google Scholar 

  18. Trenberth KE (1990) Recent observed interdecadal climate changes in the northern hemisphere. Bull Am Meteorol Soc 71:988–993

    Article  Google Scholar 

  19. Velden CS, Leslie LM (1991) The basic relationship between tropical cyclone intensity and the depth of the environmental steering layer in the Australian region. Weather Forecast 6:244–253

    Article  Google Scholar 

  20. Webster PJ (2005) Changes in tropical cyclone number, duration, and intensity in a warming environment. Science 309:1844–1846

    Article  Google Scholar 

  21. Weinkle JL, Maue R, Pielke R (2012) Historical global tropical cyclone landfalls. J Clim 25:4729–4735

    Article  Google Scholar 

  22. Wilks DS (1995) Statistical methods in the atmospheric sciences. Academic Press, p 467

  23. Wingo MT, Cecil DJ (2010) Effects of vertical wind shear on tropical cyclone precipitation. Mon Weather Rev 138:645–662

    Article  Google Scholar 

  24. Yang WJ, Yi WH (2013) Safety evaluation of mansionary buildings for tsunami. J Korean Soc Hazard Mitig 13:45–49

    Article  Google Scholar 

Download references


This work was funded by the Korea Meteorological Administration and Development Program under Grant 2013-8050.

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Correspondence to Hae-Dong Kim.

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Choi, KS., Kim, BJ., Kang, SD. et al. Interannual variation of the Philippines affecting tropical cyclone intensity and its possible causes. Theor Appl Climatol 122, 295–301 (2015).

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  • Tropical Cyclone
  • Central Pressure
  • Vertical Wind Shear
  • Tropical Cyclone Genesis
  • Tropical Cyclone Intensity