DOI QR코드

DOI QR Code

Characteristics of Tropical Cyclogenesis over the Western North Pacific in 2007

2007년 북서태평양에서의 열대저기압 발생 특징

  • Choi, Ki-Seon (National Institute of Meteorological Research, Korea Meteorological Adminstration) ;
  • Kim, Baek-Jo (National Institute of Meteorological Research, Korea Meteorological Adminstration) ;
  • Lee, Seong-Lo (Department of Civil Engineering, Mokpo National University) ;
  • Kim, Ho-Kyung (Department of Civil Engineering, Mokpo National University) ;
  • Park, Jong-Kil (School of Environmental Sciences Engineering, Atmospheric Environment Information Research Center, Inje University) ;
  • Lee, Ji-Sun (Department of Environmental Atmospheric Sciences, Pukyong National University)
  • Published : 2009.05.31

Abstract

This study found that tropical cyclones (TCs) formed for fall in 2007 over the western North Pacific were distributed in high-latitudes comparing to 56-year (1951-2006) climatological mean. The frequency and latitude of TC genesis became higher than 56-year climatological mean from September onward in 2007 and all the TCs that formed to the north of 20$^{\circ}$N was also distributed after September in 2007. These characteristics of TC genesis for fall in 2007 could be confirmed through analyzing various variables, such as a large-scale atmospheric circulation, outgoing longwave radiation (OLR), vertical zonal wind shear, and sea surface temperature (SST). On the other hand, a frequency of the TC that occurred to the north of 200N showed a clear interdecadal variation and its decreasing trend was distinctive in recent years. Its intensity was also weaker that TCs that did to the south of 20$^{\circ}$N. However, a latitude of TC genesis showed an increasing trend until recent years, whose variation was consistent with trend that through a SST analysis, warm SST went north in recent years.

Keywords

References

  1. Gray W. M., 1968, Global view of the origin of tropical disturbances and storms, Monthly Weather Review, 96, 669-700 https://doi.org/10.1175/1520-0493(1968)096<0669:GVOTOO>2.0.CO;2
  2. McBride J. L., 1995, Tropical cyclone formation, Global Perspectives on Tropical Cyclones, WMO/TD-No. 693, World Meteorological Organization, 63-105
  3. Chen T. C., Weng S. P., Yamazaki N., Kiehne S., 1998, Interannual variation in the tropical cyclone formation over the western North Pacific, Monthly Weather Review, 126, 1080-1090 https://doi.org/10.1175/1520-0493(1998)126<1080:IVITTC>2.0.CO;2
  4. Chan J. C. L., 1985, Tropical cyclone activity in the northwest Pacific in relation to the El Nino/Southern Oscillation phenomenon, Monthly Weather Review, 113, 599-606 https://doi.org/10.1175/1520-0493(1985)113<0599:TCAITN>2.0.CO;2
  5. Lander M. A., 1994, An exploratory analysis of the relationship between tropical storm formation in the western North Pacific and ENSO, Monthly Weather Review, 122, 636-651 https://doi.org/10.1175/1520-0493(1994)122<0636:AEAOTR>2.0.CO;2
  6. Wu G., Lau N. C., 1992, A GCM simulation of the relationship between tropical storm formation and ENSO, Monthly Weather Review, 120, 958-977 https://doi.org/10.1175/1520-0493(1992)120<0958:AGSOTR>2.0.CO;2
  7. Dong K., 1988, El Nino and tropical cyclone frequency in the Australian region and the northwest Pacific, Australian Meteorological Magazine, 36, 219-255
  8. Ramage C. S., Hori A. M., 1981, Meteorological aspects of El Nino, Monthly Weather Review, l09, 1827-1835
  9. Wang B, Chan J. C. L., 2002, How Strong ENSO Events Affect Tropical Storm Activity over the Western North Pacific, Journal of climate, 15, 1643-1658 https://doi.org/10.1175/1520-0442(2002)015<1643:HSEEAT>2.0.CO;2
  10. Nakazawa T., 2001, Suppressed tropical cyclone formation over the western North Pacific in 1998, Journal of the Meteorological society of Japan, 79, 173-183 https://doi.org/10.2151/jmsj.79.173
  11. 신임철, 김은희, 이동일, 김태룡, 김영신, 김은숙, 이은정, 이희일, 2008, 각종 기록을 경신한 우리나라의 2007년 기후 및 장기 기후변화, 2008년 한국기상학회 봄 학술대회 논문집, 200-201
  12. Kalnay E., Coauthors, 1996, The NCEP/NCAR 40-Year reanalysis project, Bulletin of American Meteorological Society, 77, 437-471 https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2
  13. Cheung K. K. W., 2004, Large-scale environmental parameters associated with tropical cyclone formations in the western North Pacific, Journal of Climate, 17, 466-484 https://doi.org/10.1175/1520-0442(2004)017<0466:LEPAWT>2.0.CO;2
  14. Webster P. J., Holland G. J., Curry J. A., Chang H. R., 2005, Changes in tropical cyclone number, duration, and intensity in a warming environment, Science, 309, 1844-1846 https://doi.org/10.1126/science.1116448