Different El Niño types and intense typhoons in the Western North Pacific
- 542 Downloads
This study shows that the occurrence of intense typhoons in the western North Pacific is significantly higher in the autumns of the Central Pacific (CP), compared to Eastern Pacific El Niño years. Specifically, (1) The higher occurrence of intense typhoons in CP El Niño autumns is related to a longer typhoon lifespan, maximum potential intensity, ocean heat content, vertical shear of the zonal wind (850–200 hPa), outgoing long-wave radiation, and moist static energy averaged over 1,000–500 hPa. (2) A longer typhoon lifespan in CP El Niño autumns is caused by the westward shift of the subtropical high, which tends to steer typhoon to the west and northwest.
KeywordsCP El Niño EP El Niño Intense typhoon Western North Pacific
This research was jointly supported by the Geographical Modeling and Geocomputation program under the Focused Innovation Scheme of The Chinese University of Hong Kong, Open Research Funding Program of KLGIS of Ministry of Education at East China Normal University (Grant No. KLGIS2012A04), the Startup Foundation for Introducing Talent of NUIST, the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions, Jiangsu Natural Science Funds for Distinguished Young Scholar (BK20140047) and National Natural Science Foundation of China (Grant No.: 41201045).
- Bengtsson L, Lighthill J, Pearce RP (1982a), The factors determining radial flow and eye formation in an intensifying tropical cyclone. In: Ghil M, Sadourny R, Sundermann J (eds) Intense atmospheric vortices. Topics in atmospheric and oceanographic sciences. Springer, Berlin, pp 131–146CrossRefGoogle Scholar
- Chen G, Tam C-Y (2010) Different impacts of two kinds of Pacific Ocean warming on tropical cyclone frequency over the western North Pacific. Geophys Res Lett 37(1):L01803Google Scholar
- Hong C-C et al (2011) Impacts of central Pacific and eastern Pacific El Niños on tropical cyclone tracks over the western North Pacific. Geophys Res Lett 38(16):L16712Google Scholar
- Kim ST, Yu J-Y (2012) The two types of ENSO in CMIP5 models. Geophys Res Lett 39:L11704Google Scholar
- Klotzbach PJ (2006) Trends in global tropical cyclone activity over the past twenty years (1986–2005). Geophys Res Lett 33(10):L10805Google Scholar
- Kossin J, Knapp K, Vimont D, Murnane R, Harper B (2007) A globally consistent reanalysis of hurricane variability and trends. Geophys Res Lett 34(4):L04815Google Scholar
- Lee S-K et al (2010) On the impact of central Pacific warming events on Atlantic tropical storm activity. Geophys Res Lett 37(17):L17702Google Scholar
- Liebmann B, Smith CA (1996) Description of a complete (Interpolated) outgoing longwave radiation dataset. Bull Am Meteorol Soc 77:1275–1277Google Scholar