Rainfall Characteristics of Johor Bahru and Kota Bharu, Malaysia

  • Zarina Md Ali Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor
  • Lai Wai Tan Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor
  • Ira Masyra Daud Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor
  • Noor Aliza Ahmad Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor
Keywords: Johor Bahru, Kota Bharu, Mann-Kendall, rain characteristics, trends

Abstract

Characteristics of rainfall was influenced by climate variability. Occurrence of extreme events due to climate variability may lead to flash floods or monsoonal flooding. This paper discusses on characteristics and trend of monthly and annual rainfall at Johor Bahru and Kota Bharu. Daily rainfall observations at the stations that spans over 13 years, i.e. from year 2004 to year 2016 was used. Minimum and maximum total annual rainfall recorded at Johor Bahru and Kota Bharu are 1708.0 mm and 3455.5 mm, and 1036.3 mm and 3037.0 mm, respectively. Mann-Kendall test has showed that the monthly and annual rainfall trends at both stations are insignificant. Longer period of rainfall observations should be considered to obtain more significant trends. The longest dry and wet days within a month observed over the 13-year rainfall are 26 days and 17 days at Johor Bahru, and 29 days and 25 days at Kota Bharu. Both Johor Bahru and Kota Bharu receives higher rain during the beginning of north-east monsoon, i.e. in November and December.
Published
2017-12-28
How to Cite
Md Ali, Z., Tan, L. W., Daud, I. M., & Ahmad, N. A. (2017). Rainfall Characteristics of Johor Bahru and Kota Bharu, Malaysia. Journal of Science and Technology, 9(4). Retrieved from https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/2150