On the roles of the northeast cold surge, the Borneo vortex, the Madden-Julian Oscillation, and the Indian Ocean Dipole during the extreme 2006/2007 flood in southern Peninsular Malaysia

Fredolin Tangang @ Tajudin Mahmud, Ju Neng Liew, Ester Salimun, P. N. Vinayachandran, Yap Kok Seng, C. J C Reason, Swadhin K. Behera, T. Yasunari

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

The mid-December 2006 to late January 2007 flood in souhthern Peninsular Malaysia was the worst flood in a century and was caused by three extreme precipitation episodes. These extreme precipitation events were mainly associated with strong northeasterly winds over the South China Sea. In all cases, the northeasterlies penetrated anomalously far south and followed almost a straight trajectory. The elevated terrain over Sumatra and southern Peninsular Malaysia caused low-level convergence. The strong easterly winds near Java associated with the Rossby wave-type response to Madden-Julian Oscillation (MJO) inhibited the counter-clockwise turning of the northeasterlies and the formation of the Borneo vortex, which, in turn, enhanced the low-level convergence over the region. The abrupt termination of the Indian Ocean Dipole (IOD) in December 2006 played a secondary role as warmer equatorial Indian Ocean helped in the MJO formation.

Original languageEnglish
Article numberL14S07
JournalGeophysical Research Letters
Volume35
Issue number14
DOIs
Publication statusPublished - 28 Jul 2008

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Madden-Julian Oscillation
Malaysia
Madden-Julian oscillation
Indian Ocean
vortex
vortices
dipoles
Rossby wave
planetary waves
China
counters
trajectory
trajectories
Indian Ocean Dipole
cold

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geophysics

Cite this

On the roles of the northeast cold surge, the Borneo vortex, the Madden-Julian Oscillation, and the Indian Ocean Dipole during the extreme 2006/2007 flood in southern Peninsular Malaysia. / Tangang @ Tajudin Mahmud, Fredolin; Liew, Ju Neng; Salimun, Ester; Vinayachandran, P. N.; Seng, Yap Kok; Reason, C. J C; Behera, Swadhin K.; Yasunari, T.

In: Geophysical Research Letters, Vol. 35, No. 14, L14S07, 28.07.2008.

Research output: Contribution to journalArticle

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