Klimatologi hujan diurnal dan bayu laut-darat di semenanjung Malaysia

Translated title of the contribution: Climatology of diurnal rainfall and land-sea breeze in Peninsular Malaysia

Ahmad Fairudz Jamaluddin, Fredolin Tangang @ Tajudin Mahmud, Wan Maisarah Wan Ibadullah, Ju Neng Liew, Diong Jeong Yik, Ester Salimun, Ambun Dindang, Muhammad Helmi Abdullah

Research output: Contribution to journalArticle

Abstract

This study aims to provide a basic understanding of diurnal rainfall climatology and its mechanisms in Peninsular Malaysia by utilising observation data. The analysis of rainfall amount, frequency and intensity showed 4 main diurnal rainfall events: the occurrence of afternoon rainfall maximum at the foothills of Titiwangsa Mountain Range during the inter-monsoon periods was heavy and frequently occurred; the occurrence of rainfall throughout entire day over the east coast of peninsula (PT sub-region) during northeast monsoon was heavy and frequently occurred; the occurrence of entire day rain over the inland-valley (LP sub-region) area during northeast monsoon was low despite heavy rainfall often occurred in the afternoon; and the occurrence of morning rainfall maximum was an extreme rainfall event but with low in frequency over the west coast of peninsula (PB sub-region) during June-July-August-September-October-November (JJASON). During the inter-monsoon periods, stronger surface wind and weaker at higher tropospheric level caused vertical wind shear over the PB sub-region. On the other hand, superimposition of monsoonal flow and sea breeze during southwest monsoon resulted downward shear in the sub-region. During the northeast monsoon, combination of cold surges and sea breezes modulate strong wind from the surface up to 2 km height. This causes a convection zone which was confined over the PT sub-region in the morning to extend into LP sub-region in the afternoon.

Original languageMalay
Pages (from-to)509-522
Number of pages14
JournalSains Malaysiana
Volume48
Issue number3
DOIs
Publication statusPublished - 1 Mar 2019

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sea breeze
climatology
rainfall
monsoon
land
coast
wind shear
surface wind
convection
valley

ASJC Scopus subject areas

  • General

Cite this

Jamaluddin, A. F., Tangang @ Tajudin Mahmud, F., Wan Ibadullah, W. M., Liew, J. N., Yik, D. J., Salimun, E., ... Abdullah, M. H. (2019). Klimatologi hujan diurnal dan bayu laut-darat di semenanjung Malaysia. Sains Malaysiana, 48(3), 509-522. https://doi.org/10.17576/jsm-2019-4803-03

Klimatologi hujan diurnal dan bayu laut-darat di semenanjung Malaysia. / Jamaluddin, Ahmad Fairudz; Tangang @ Tajudin Mahmud, Fredolin; Wan Ibadullah, Wan Maisarah; Liew, Ju Neng; Yik, Diong Jeong; Salimun, Ester; Dindang, Ambun; Abdullah, Muhammad Helmi.

In: Sains Malaysiana, Vol. 48, No. 3, 01.03.2019, p. 509-522.

Research output: Contribution to journalArticle

Jamaluddin, AF, Tangang @ Tajudin Mahmud, F, Wan Ibadullah, WM, Liew, JN, Yik, DJ, Salimun, E, Dindang, A & Abdullah, MH 2019, 'Klimatologi hujan diurnal dan bayu laut-darat di semenanjung Malaysia', Sains Malaysiana, vol. 48, no. 3, pp. 509-522. https://doi.org/10.17576/jsm-2019-4803-03
Jamaluddin, Ahmad Fairudz ; Tangang @ Tajudin Mahmud, Fredolin ; Wan Ibadullah, Wan Maisarah ; Liew, Ju Neng ; Yik, Diong Jeong ; Salimun, Ester ; Dindang, Ambun ; Abdullah, Muhammad Helmi. / Klimatologi hujan diurnal dan bayu laut-darat di semenanjung Malaysia. In: Sains Malaysiana. 2019 ; Vol. 48, No. 3. pp. 509-522.
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