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Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis

Understanding the atmospheric properties and patterns is crucial in empowering Malaysia’s national aerospace blueprint, national space, and legislation. While various policies have been enacted and implemented, there is a lack of information on the wind profile, specifically the upper air across Pen...

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Main Authors:	Mohd Shahidi Alias,, Azmin Shakrine Mohd Rafie,, Mohd Faisal Abdul Hamid,, Ezanee Gires,, Khairul Dahri Mohd Aris,
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2024
Online Access:	http://journalarticle.ukm.my/23724/1/SMT%202.pdf http://journalarticle.ukm.my/23724/ https://www.ukm.my/jsm/english_journals/vol53num3_2024/contentsVol53num3_2024.html
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id	my-ukm.journal.23724
record_format	eprints
spelling	my-ukm.journal.237242024-07-04T03:54:12Z http://journalarticle.ukm.my/23724/ Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis Mohd Shahidi Alias, Azmin Shakrine Mohd Rafie, Mohd Faisal Abdul Hamid, Ezanee Gires, Khairul Dahri Mohd Aris, Understanding the atmospheric properties and patterns is crucial in empowering Malaysia’s national aerospace blueprint, national space, and legislation. While various policies have been enacted and implemented, there is a lack of information on the wind profile, specifically the upper air across Peninsular Malaysia. Realising the need to establish a standard guideline for national reference, future research, space-aerospace application, and legislation, this study was performed to develop the first wind profile analysis of upper air in Peninsular Malaysia. Relevant data from the Malaysian Meteorology Department was collected for analysis and evaluation. Specifically, a meteorology balloon attached with a sounding radiosonde was used to record data at 0000UTC (0800 h LT) and 1200UTC (2000 h LT) on the 15th day of each month for 7 years (from 2015 to 2021) at the KLIA and Kuantan Meteorology Stations for the wind profiling analysis. The daily overall data collection was recorded accurately once the balloon’s rising rate stabilises from vertical air current (katabatic or anabatic winds). Subsequently, the collected data were evaluated in terms of the minimum, maximum, and average wind speeds for each year and time. Finally, the average wind speed of each year and time were combined to generate the Peninsular Malaysia wind profile. Based on the results, the projected wind profile for both stations identified three peaks of discrete sine wave flow type with low-speed wind profile in Peninsular Malaysia. The three peaks amplified the highest air velocity, whereby the 1st and 2nd peaks were located at the troposphere layer from 9,000 m to 12,000 m altitude (average wind speed of 10.8 ms-1) and 12,000 m to 18,000 m altitude (average wind speed of 13.7 ms-1). The 3rd peak was located at the stratosphere layer from 18,000 m to 32,000 m altitude (average wind speed of 15.2 ms-1). Since East Malaysia is located on the same equatorial line, the wind profile is hypothetically the same and exhibits only slight differences. In short, the established wind profile of upper air in Peninsular Malaysia in this study would facilitate other future studies and assist long-term planning of Malaysia’s airspace legislation. Penerbit Universiti Kebangsaan Malaysia 2024 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/23724/1/SMT%202.pdf Mohd Shahidi Alias, and Azmin Shakrine Mohd Rafie, and Mohd Faisal Abdul Hamid, and Ezanee Gires, and Khairul Dahri Mohd Aris, (2024) Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis. Sains Malaysiana, 53 (3). pp. 487-499. ISSN 0126-6039 https://www.ukm.my/jsm/english_journals/vol53num3_2024/contentsVol53num3_2024.html
institution	Universiti Kebangsaan Malaysia
building	Tun Sri Lanang Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Kebangsaan Malaysia
content_source	UKM Journal Article Repository
url_provider	http://journalarticle.ukm.my/
language	English
description	Understanding the atmospheric properties and patterns is crucial in empowering Malaysia’s national aerospace blueprint, national space, and legislation. While various policies have been enacted and implemented, there is a lack of information on the wind profile, specifically the upper air across Peninsular Malaysia. Realising the need to establish a standard guideline for national reference, future research, space-aerospace application, and legislation, this study was performed to develop the first wind profile analysis of upper air in Peninsular Malaysia. Relevant data from the Malaysian Meteorology Department was collected for analysis and evaluation. Specifically, a meteorology balloon attached with a sounding radiosonde was used to record data at 0000UTC (0800 h LT) and 1200UTC (2000 h LT) on the 15th day of each month for 7 years (from 2015 to 2021) at the KLIA and Kuantan Meteorology Stations for the wind profiling analysis. The daily overall data collection was recorded accurately once the balloon’s rising rate stabilises from vertical air current (katabatic or anabatic winds). Subsequently, the collected data were evaluated in terms of the minimum, maximum, and average wind speeds for each year and time. Finally, the average wind speed of each year and time were combined to generate the Peninsular Malaysia wind profile. Based on the results, the projected wind profile for both stations identified three peaks of discrete sine wave flow type with low-speed wind profile in Peninsular Malaysia. The three peaks amplified the highest air velocity, whereby the 1st and 2nd peaks were located at the troposphere layer from 9,000 m to 12,000 m altitude (average wind speed of 10.8 ms-1) and 12,000 m to 18,000 m altitude (average wind speed of 13.7 ms-1). The 3rd peak was located at the stratosphere layer from 18,000 m to 32,000 m altitude (average wind speed of 15.2 ms-1). Since East Malaysia is located on the same equatorial line, the wind profile is hypothetically the same and exhibits only slight differences. In short, the established wind profile of upper air in Peninsular Malaysia in this study would facilitate other future studies and assist long-term planning of Malaysia’s airspace legislation.
format	Article
author	Mohd Shahidi Alias, Azmin Shakrine Mohd Rafie, Mohd Faisal Abdul Hamid, Ezanee Gires, Khairul Dahri Mohd Aris,
spellingShingle	Mohd Shahidi Alias, Azmin Shakrine Mohd Rafie, Mohd Faisal Abdul Hamid, Ezanee Gires, Khairul Dahri Mohd Aris, Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis
author_facet	Mohd Shahidi Alias, Azmin Shakrine Mohd Rafie, Mohd Faisal Abdul Hamid, Ezanee Gires, Khairul Dahri Mohd Aris,
author_sort	Mohd Shahidi Alias,
title	Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis
title_short	Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis
title_full	Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis
title_fullStr	Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis
title_full_unstemmed	Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis
title_sort	wind profiles in peninsular malaysia : a comprehensive upper air analysis
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2024
url	http://journalarticle.ukm.my/23724/1/SMT%202.pdf http://journalarticle.ukm.my/23724/ https://www.ukm.my/jsm/english_journals/vol53num3_2024/contentsVol53num3_2024.html
_version_	1804066000350478336
score	13.211869

Wind profiles in Peninsular Malaysia : a comprehensive upper air analysis

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