CHARACTERISTICS OF TROPICAL CYCLONE GENESIS IN THE WESTERN NORTH PACIFIC DURING THE DEVELOPING AND DECAYING PHASES OF TWO TYPES OF EL NIÑO

CHUNG Pei-hsuan; Tim LI

Abstract:

During the developing phase of central Pacific El Niño (CPEN), more frequent TC genesis over the northwest quadrant of the western North Pacific (WNP) is attributed to the horizontal shift of environmental vorticity field. Such a northwestward shift resembles the La Niña composite, even though factors that cause the shift differ (in the La Niña case the relative humidity effect is crucial). Greater reduction of TC frequency over WNP happened during the decaying phase of eastern Pacific El Niño (EPEN) than CPEN, due to the difference of the anomalous Philippine Sea anticyclone strength. The TC genesis exhibits an upward (downward) trend over the northern (southern) part of the WNP, which is linked to SST and associated circulation changes through local and remote effects.

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CHUNG Pei-hsuan, Tim LI. CHARACTERISTICS OF TROPICAL CYCLONE GENESIS IN THE WESTERN NORTH PACIFIC DURING THE DEVELOPING AND DECAYING PHASES OF TWO TYPES OF EL NIÑO [J]. Journal of Tropical Meteorology, 2015, 21(1): 14-22.

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CHARACTERISTICS OF TROPICAL CYCLONE GENESIS IN THE WESTERN NORTH PACIFIC DURING THE DEVELOPING AND DECAYING PHASES OF TWO TYPES OF EL NIÑO

Department of History and Geography, University of Taipei, Taipei, Taiwan

Rev Recd Date: 2014-12-03

Abstract: During the developing phase of central Pacific El Niño (CPEN), more frequent TC genesis over the northwest quadrant of the western North Pacific (WNP) is attributed to the horizontal shift of environmental vorticity field. Such a northwestward shift resembles the La Niña composite, even though factors that cause the shift differ (in the La Niña case the relative humidity effect is crucial). Greater reduction of TC frequency over WNP happened during the decaying phase of eastern Pacific El Niño (EPEN) than CPEN, due to the difference of the anomalous Philippine Sea anticyclone strength. The TC genesis exhibits an upward (downward) trend over the northern (southern) part of the WNP, which is linked to SST and associated circulation changes through local and remote effects.

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[1]	CHAN J C L. Tropical cyclone activity over the western North Pacific associated with El Ni?o and La Ni?a events [J]. J Climate, 2000, 13: 2 960-2 972.
[2]	CHEN Guang-hua, HUANG Rong-hui. The effect of warm pool thermal states on tropical cyclones in the western north Pacific [J]. J Trop Meteorol, 2007, 13(1): 53-56.
[3]	WANG Xiao-ling, SONG Wen-ling. Studies on relationships between ENSO and landfalling tropical cyclones in China [J]. J Trop Meteorol, 2010, 16(2): 189-194.
[4]	DU Yu-gang, SONG Jin-jie J, TANG Jian-ping. Impacts of different kinds of ENSO on landfalling tropical cyclones in China [J]. J Trop Meteorol, 2013, 19(1): 39-48.
[5]	CAMARGO S J, EMANUEL K A, SOBEL A H. Use of genesis potential index to diagnose ENSO effects on tropical cyclone genesis [J]. J. Climate, 2007, 20: 4 819-4 834.
[6]	LANDER M A. An exploratory analysis of the relationship between tropical storm formation in the western North Pacific and ENSO [J]. Mon Wea Rev, 1994, 122: 636-651.
[7]	RASMUSSON E M, CARPENTER T H. Variations in tropical sea surface temperature and surface wind fields associated with the Southern Oscillation/El Ni?o [J]. Mon Wea Rev, 1982, 110: 354-384.
[8]	ASHOK K, BEHERA S K, RAO S A, et al. El Ni?o Modoki and its possible teleconnection [J]. J Geophys Res, 2007, 112: C11007, doi:10.1029/2006JC003798.
[9]	KAO H Y, YU J Y. Contrasting eastern Pacific and central pacific types of ENSO [J]. J Climate, 2009, 22: 615-631.
[10]	KUG J S, JIN F F, AN S I. Two types of El Ni?o events: Cold tongue El Ni?o and warm pool El Ni?o [J]. J Climate, 2009, 22: 1 499-1 515.
[11]	CHEN G, TAM C Y. Different impacts of two kinds of Pacific Ocean warming on tropical cyclone frequency over the western North Pacific [J]. Geophys Res Lett, 2010, 37: L01803, doi:10.1029/2009GL041708.
[12]	KIM H M, WEBSTER P J, CURRY J A. Modulation of North Pacific Tropical Cyclone Activity by Three Phases of ENSO [J]. J Climate, 2011, 24: 1 839-1 894.
[13]	MATSUURA T, YUMOTO M, IIZUKA S. A mechanism of interdecadal variability of tropical cyclone activity over the western North Pacific [J], Climate Dyn, 2003, 21: 105�C117.
[14]	HO C H, BAIK J J, KIM J H, et al. Interdecadal changes in summertime typhoon tracks [J]. J Climate, 2004, 17: 1 767-1 776.
[15]	WU L, WANG B, GENG S. Growing typhoon influences on East Asia [J]. Geophys. Res Lett, 2005, 32: L18703, doi:10.1029/2005GL022937.
[16]	LI T. Synoptic and climatic aspects of tropical cyclogenesis in western North Pacific, Cyclones: Formation, triggers and control [M]. New York: Nova Science Publishers, 2012: Chapter 3.
[17]	MCPHADEN M J, LEE T, MCCLURG D. El Ni?o and its relationship to changing background conditions in the tropical Pacific Ocean [J]. Geophys Res Lett, 2011, 38: L15709, doi:10.1029/2011GL048275.
[18]	CHUNG P H, LI T. Interdecadal relationship between the mean state and El Ni?o types [J]. J Climate, 2013, 26(2): 361-379.
[19]	KALNAY E, et al. The NCEP/NCAR 40-Year Reanalysis Project [J]. Bull Amer Meteorol Soc, 1996, 77: 437-471.
[20]	SMITH T M, REYNOLDS R W, PETERSON T C, et al. Improvements to NOAA’s Historical Merged Land�COcean Surface Temperature Analysis (1880�C2006) [J]. J Climate, 2008, 21: 2 283-2 296.
[21]	EMANUEL K A, NOLAN D S. Tropical cyclone activity and global climate [C]// 26th Conference on Hurricanes and Tropical Meteorology, American Meteorological Society, 2004: 240-241.
[22]	EMANUEL K A. The maximum intensity of hurricanes [J]. J Atmos Sci, 1988, 45: 1 143-1 155.
[23]	WU Sheng-an, LI Tao, KONG Hai-jiang. Sensitivity factors for typhoon genesis over the western North Pacific during July-September [J]. J Trop Meteorol, 2014, 20(2): 112-120.
[24]	CHANG C P, ZHANG Y, LI T. Interannual and interdecadal variations of the East Asian summer monsoon and tropical Pacific SSTs. Part 1: Role of the subtropical ridge [J]. J Climate, 2000, 13: 4 310-4 325.
[25]	WANG B, WU R, LI T. Atmosphere�\warm ocean interaction and its impact on Asian�\Australian monsoon variation [J]. J Climate, 2003, 16: 1 195-1 211.
[26]	CHUNG P H, SUI C H, LI T. Interannual relationships between the tropical sea surface temperature and summertime subtropical anticyclone over the western North Pacific [J]. J Geophys Res, 2011, 116: D13111, doi:10.1029/2010JD015554.
[27]	LIN A, LI T. Energy spectrum characteristics of boreal summer intraseasonal oscillations: climatology and variations during the ENSO developing and decaying phases [J]. J Climate, 2008, 21: 6 304-6 320.

CHARACTERISTICS OF TROPICAL CYCLONE GENESIS IN THE WESTERN NORTH PACIFIC DURING THE DEVELOPING AND DECAYING PHASES OF TWO TYPES OF EL NIÑO

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