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All Journal Jurnal Ilmu Fisika
Toyoshi Shimomai
Remote Sensing Laboratory, Shimane University, Japan
Astronomy Earth & Planetary Sciences Materials Science & Nanotechnology Physics

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Differences in Mechanisms of Orographic Rainfall over West Sumatra (Case Study: 10 April and 23 April 2004) Wendi Harjupa; Toyoshi Shimomai; Hiroyuki Hashiguchi; Yasushi Fujiyoshi; Masayuki Kawashima
Jurnal Ilmu Fisika Vol 13 No 1 (2021): March 2021
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.13.1.8-17.2021

Abstract

Two different mechanisms of orographic rainfall enhancement  in West Sumatra were investigated utilizing observed data during the Coupling Processes in the Equatorial Atmosphere (CPEA)-I campaign. The variation of the atmospheric conditions during the campaign was shown by rainfall, surface wind, humidity, and stability index. An X-band Doppler radar captured the atmospheric conditions related to the enhancement of orographic rainfall mechanisms. The dry and less stable atmospheric conditions resulted in the convective type of rainfall. In contrast, the humid and stable atmospheric conditions brought the large-scale rainfall in the mountainous region where the events took place coincided with the inactive and active MJO phases..
Co-Authors Hiroyuki Hashiguchi Masayuki Kawashima Wendi Harjupa Yasushi Fujiyoshi