Influence of monsoon over the warm pool on interannual variation on tropical cyclone activity over the western North Pacific
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
The relationship between the interannual variation in tropical cyclone (TC) activity over the western North Pacific (WNP) and the thermal state over the warm pool (WP) is examined in this paper. The results show that the subsurface temperature in the WP is well correlated with TC geographical distribution and track type. Their relation is linked by the East Asian monsoon trough. During the warm years, the westward-retreating monsoon trough creates convergence and vorticity fields that are favorable for tropical cyclogenesis in the northwest of the WNP, whereas more TCs concentrating in the southeast result from eastward penetration of the monsoon trough during the cold years. The steering flows at 500 hPa lead to a westward displacement track in the warm years and recurving prevailing track in the cold years.
The two types of distinct processes in the monsoon environment triggering tropical cyclogenesis are hypothesized by composites centered for TC genesis location corresponding to two kinds of thermal states of the WP. During the warm years, low-frequency intraseasonal oscillation is active in the west of the WNP such that eastward-propagating westerlies cluster TC genesis in that region. In contrast, during the cold years, the increased cyclogenesis in the southeast of the WNP is mainly associated with tropical depression type disturbances transiting from equatorially trapped mixed Rossby gravity waves. Both of the processes may be fundamental mechanisms for the inherent interannual variation in TC activity over the WNP.
- Chan, J. C.-L., 1985: Tropical cyclone activity in the northwest Pacific in relation to the El Niño/Southern Oscillation phenomenon. Mon. Wea. Rev., 113, 599–606. CrossRef
- Chan, J. C.-L., 2000: Tropical cyclone activity over the western North Pacific associated with El Niño and La Niña events. J. Climate, 13, 2960–2972. CrossRef
- Chang, C.-P., J. M. Chen, P. A. Harr, and L. E. Carr, 1996: Northwestward propagating wave patterns over the tropical western North Pacific during summer. Mon. Wea. Rev., 124, 2245–2266. CrossRef
- Chia, H.-H., and C. F. Ropelewski, 2002: The interannual variability in the genesis location of tropical cyclones in the northwest Pacific. J. Climate, 15, 2934–2944. CrossRef
- Dickinson, M., and J. Molinari, 2002: Mixed Rossby-gravity waves and western Pacific tropical cyclogenesis. Part I: Synoptic evolution. J. Atmos. Sci., 59, 2183–2196. CrossRef
- Gray, W. M., 1968: Global view of the origin of tropical disturbances and storms. Mon. Wea. Rev., 96, 669–700. CrossRef
- Hall, J. D., A. J. Matthews, and D. J. Karoly, 2001: The modulation of tropical cyclone activity in the Australian region by the Madden-Julian Oscillation. Mon. Wea. Rev., 129, 2970–2982. CrossRef
- Huang, R. H., and F. Y. Sun, 1992: Impact of the tropical western pacific on the East Asian summer monsoon. J. Meteor. Soc. Japan, 70, 243–256.
- Huang, R. H., and F. Y. Sun, 1994: Impacts of the thermal state and the convective activities in the tropical western Warm Pool on the summer climate anomalies in East Asia. Chinese J. Atmos. Sci., 18, 141–151. (in Chinese)
- Huang, R. H., W. Chen, B. L. Yang, and R. H. Zhang, 2004: Recent advances in studies of the interaction between the East Asian winter and summer monsoons and ENSO cycle. Adv. Atmos. Sci., 21, 407–424. CrossRef
- Japan Meteorological Agency, 2004: Monthly Report on Climate System. Tokyo Climate Center, 32pp.
- Japan Meteorological Agency, 2006: Monthly Report on Climate System. Tokyo Climate Center, 24pp.
- Lander, M. A., 1993: Comments on “A GCM simulation of the relationship between tropical cyclone formation and ENSO.” Mon. Wea. Rev., 121, 2137–2143. CrossRef
- Lander, M. A., 1994: An exploratory analysis of the relationship between tropical storm formation in the western North Pacific and ENSO. Mon. Wea. Rev., 122, 636–651. CrossRef
- Liebmann, B., H. Hendon, and J. D. Glick, 1994: The relationship between tropical cyclones of the western Pacific and Indian Oceans and the Madden-Julian oscillation. J. Meteor. Soc. Japan, 72, 401–411.
- McBride, J. L., 1995: Tropical cyclone formation. Chapter 3, Global Perspectives on Tropical Cyclones, R. L. Elsberry, Ed., WMO/TD-No. 693, World Meteorological Organization, Geneva, 63–105.
- Maloney, E. D., and D. L. Hartmann, 2000: Modulation of eastern North Pacific hurricanes by the Madden-Julian oscillation. J. Climate, 13, 1451–1460. CrossRef
- Maloney, E. D., and D. L. Hartmann, 2001: The Madden-Julian oscillation, Barotropic dynamics, and North Pacific tropical cyclone formation. Part I: Observations. J. Atmos. Sci., 58, 2545–2558. CrossRef
- Nitta, T., 1987: Convective activities in the tropical western Pacific and their impact on the Northern Hemisphere summer circulation. J. Meteor. Soc. Japan, 64. 373–390.
- Ren, B. H, and R. H. Huang, 2003: 30–60-day oscillations of convection and circulation associated with the thermal state of the western Pacific warm pool during boreal summer. Adv. Atmo. Sci., 20, 781–793. CrossRef
- Takayabu, Y. N., and T. Nitta, 1993: 3–5 day period disturbances coupled with convection over the tropical Pacific Ocean. J. Meteor. Soc. Japan, 71, 221–245.
- Wang, B., and J. C. L. Chan, 2002: How strong ENSO events affect tropical storm activity over the western North Pacific. J. Climate, 15, 1643–1658. CrossRef
- Wang, H., Y. H. Ding, and J. H. He, 2006: Influence of western North Pacific summer monsoon changes on typhoon geneis. Acta Meteorologica Sinica, 64, 345–356. (in Chinese)
- Wu, G., and N.-C. Lau, 1992: A GCM simulation of the relationship between tropical-storm formation and ENSO. Mon. Wea. Rev., 120, 958–977. CrossRef
- Influence of monsoon over the warm pool on interannual variation on tropical cyclone activity over the western North Pacific
Advances in Atmospheric Sciences
Volume 25, Issue 2 , pp 319-328
- Cover Date
- Print ISSN
- Online ISSN
- SP Science Press
- Additional Links
- warm pool
- interannual variation
- tropical cyclone