Climate Change

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Now showing 1 - 20 of 107

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A Decade of Literature on Climate in Phytopathological Research: Visualising and Bibliometrics Analysis
(IOP Publishing, 2022) M Muhammad; M A M Zawawi; M F Jusoh; L Naher; N S A Latif; M A Hasli
This research attempts to expand graphical mapping of the bibliographic information using VOSviewer software. The research conducted the performance and network mapping approaches: publication trends, subject area, most active journals and countries, citation metrics, highly cited papers, co-authorship, and co-occurrence of the keywords.
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A Literature Review of Dual Disaster Challenges for Resilient Office Building Toward Reducing Disaster Risks
(IOP Publishing, 2022) N H Zakaria; S U M Tobi; N Othman
Several mitigation strategies have been taken by the government to reduce the risks of floods in Malaysia. As office buildings possess important roles in delivering effective services to the public while maintaining their critical documents, this paper focuses on providing related literature on building resilience.
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A system dynamics approach to pollution remediation and mitigation based on increasing the share of renewable resources
(Elsevier, 2022) Saleh Shadman; Christina M.M. Chin; Novita Sakundarini; Eng Hwa Yap; Shadreen Fairuz; Xin Yi Wong; Phahmee Ahanaf Khalid; Fatemeh Karimi; Ceren Karaman; M. Mofijur; Apurav Krishna Koyande; Pau Loke Show
This study explores the role of renewable energy (RE) penetration in Malaysia's energy security (ES) and its implications for the country's target of 20% capacity in the energy mix by 2025. Renewable energy (RE) is a critical driver of long-term energy security. In 2018, the share of renewable energy in Malaysia's energy mix was 9%, falling far short of the national target of 20% penetration by 2025. This study employs a system dynamics approach to investigate the relationship between RE penetration and correlated indicators from energy security (ES) dimensions: energy availability, environmental sustainability, and socio-economics.
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An Assessment of Coastal Vulnerability of Pahang's Coast Due to Sea Level Rise
(Science Publishing Corporation, 2018) Fazly Amri Mohd; Khairul Nizam Abdul Maulud; Othman A. Karim; Rawshan Ara Begum; Md Firoz Khan; Wan Shafrina Wan Mohd Jaafar; Sharifah Mastura Syed Abdullah; Mohd Ekhwan Toriman; Mohd Khairul Amri Kamarudin; Muhammad Barzani Gasim; Noorjima Abd Wahab
Climate change interacts in a different way with varieties of human activities and other drivers of change along coastlines. Sea level rise (SLR) is one of the major impacts of global warming. Changes in climate extremes and SLR may impact the critical infrastructures such as coastal road, jetty and chalets as well as the local community. The population and assets exposed to coastal risks will increase significantly due to population growth, economic development and urbanization in the future. As most of the cities in Malaysia are situated near the coast, immediate actions are needed to minimize the undesired outcome due to the SLR.The main objective of this study is to identify physical variables that may have impacts on the coastal area, thus develop a coastal vulnerability index (CVI) for the East Coast of Peninsular Malaysia. Seven (7) physical variables have been identified to assess the CVI that consists of geomorphology, coastal slope, shoreline change rate, mean significant wave height, mean tidal range, relative sea level rate and land use.
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Analyzing Windstorm Pattern in Malaysia based on Extracted Twitter Data
(IOP Publishing, 2022) N A Isa; S A Salleh; A Chan; N H Zakaria; Z Suif; M Abdul Halim
This study aims to analyze the pattern of recent windstorm events by utilizing big data and GIS. In this study, the reported windstorm events in Twitter application were extracted using R-programming. Prior to analyses, the extracted data were screened to remove any outliers found. The extracted data were selected based on the credibility of its sources to ensure the accuracy and quality. These selected data were extracted from trusted users such as Meteorological Department of Malaysia (MMD), Berita Harian, Bernama and others.
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Application of Analytical Hierarchy Process (AHP) for Landslide Hazard Analysis (LHA) in Kota Kinabalu Area, Sabah, Malaysia
(IOP Publishing, 2022) Rodeano Roslee; Kamilia Sharir; Goh Thian Lai; Norbert Simon; Lee Khai Ern; Eldawaty Madran; Ahmad Syazwan Saidin
The AHP is defined as theory of measurement through pairwise comparisons and relies on the judgements of experts to derive priority scales that measure intangibles in relative terms. The derived priority scales are synthesised by multiplying them by the priority of their parent nodes and adding for all such nodes. Weighted value of different spatial factors from the best models calculated with the AHP method were derived.
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Are secondary forests second-rate? Comparing peatland greenhouse gas emissions, chemical and microbial community properties between primary and secondary forests in Peninsular Malaysia
(Elsevier, 2019) Selvakumar Dhandapani; Karl Ritz; Stephanie Evers; Catherine M. Yule; Sofie Sjögersten
Tropical peatlands are globally important ecosystems with high C storage and are endangered by anthropogenic disturbances. Microbes in peatlands play an important role in sustaining the functions of peatlands as a C sink, yet their characteristics in these habitats are poorly understood. This research aimed to elucidate the responses of these complex ecosystems to disturbance by exploring greenhouse gas (GHG) emissions, nutrient contents, soil microbial communities and the functional interactions between these components in a primary and secondary peat swamp forest in Peninsular Malaysia.
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Assessment of Coastal Inundation of Low Lying Areas due to Sea Level Rise
(IOP Publishing, 2018) F A Mohd; K N Abdul Maulud; O A Karim; R A Begum; N A Awang; M R Abdul Hamid; N A Abd Rahim; A H Abd Razak
The objective of this study is to identify the potential of coastal inundation area due to Sea Level Rise (SLR) along of Cherating to Pekan coast.
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Assessment of Flood Susceptibility Analysis Using Analytical Hierarchy Process (AHP) in Kota Belud Area, Sabah,Malaysia
(IOP Publishing, 2022) Kamilia Sharir; Goh Thian Lai; Norbert Simon; Lee Khai Ern; Mustapha Abd Talip; Rodeano Roslee
This study aims to assess the flood susceptibility analysis using a Geographical Information System (GIS) based-heuristic analysis, namely the Analytical Hierarchy Process (AHP) model. Eight relevant physical parameters have been selected, namely, drainage density, drainage proximity, elevation, slope angle, slope curvature, land use, soil type, and topography wetness index. The relative importance of these factors has been compared in the pairwise matrix to gain weight values during the process of the Analytical Hierarchy Process (AHP). The flood susceptibility zones have been mapped according to their weightage value. Finally, the flood susceptibility map was prepared and classified into six classes as very low, low, moderate, high, and very high susceptibility using the natural break classification method.
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Assessment of methane emission and oxidation at Air Hitam Landfill site cover soil in wet tropical climate
(Springer, 2013) Mohammed F. M. Abushammala; Noor Ezlin Ahmad Basri; Rahmah Elfithri
Methane (CH4) emissions and oxidation were measured at the Air Hitam sanitary landfill in Malaysia and were modeled using the Intergovernmental Panel on Climate Change waste model to estimate the CH4 generation rate constant, k. The emissions were measured at several locations using a fabricated static flux chamber. A combination of gas concentrations in soil profiles and surface CH4 and carbon dioxide (CO2) emissions at four monitoring locations were used to estimate the CH4 oxidation capacity. The temporal variations in CH4 and CO2 emissions were also investigated in this study.
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Assessment of Peat Fire Susceptibility for Carbon Emission Reduction
(IOP Publishing, 2023) M A H Ahmad Nizam; S Mat Taib; N Z Mohd Yunus; N Saman
This paper aims are; a) to identify the peat classification based on peat depth and groundwater level; b) to identify CO2 content stored and CO2 emission of peat within the study area; c) to produce a hotspot hazard map using Analytical Hierarchy Process (AHP) and geospatial technologies. These are vital components in producing a holistic peat fire management approach.
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Asymmetric boundary shifts of tropical montane Lepidoptera over four decades of climate warming
(Wiley, 2011) I-Ching Chen; Jane K. Hill; Hau-Jie Shiu; Jeremy D. Holloway,Suzan Benedick; Vun Khen Chey; Henry S. Barlow; Chris D. Thomas
To estimate whether species have shifted at equal rates at their leading edges (cool boundaries) and trailing edges (warm boundaries) in response to climate change. We provide the first such evidence for tropical insects, here examining elevation shifts for the upper and lower boundaries shifts of montane moths. Threats to species on tropical mountains are considered.
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Baseline study of methane emission from open digesting tanks of palm oil mill effluent treatment
(Elsevier, 2005) Shahrakbah Yacob; Mohd Ali Hassan; Yoshihito Shirai; Minato Wakisaka; Sunderaj Subash
Anthropogenic release of greenhouse gases, especially CO2 and CH4 has been recognized as one of the main causes of global warming. Several measures under the Kyoto Protocol 1997 have been drawn up to reduce the greenhouse gases emission. One of the measures is Clean Development Mechanisms (CDM) that was created to enable developed countries to cooperate with developing countries in emission reduction activities. In Malaysia, palm oil industry particularly from palm oil mill effluent (POME) anaerobic treatment has been identified as an important source of CH4. However, there is no study to quantify the actual CH4 emission from the commercial scale wastewater treatment facility. Hence, this paper shall address the CH4 emission from the open digesting tanks in Felda Serting Hilir Palm Oil Mill. CH4 emission pattern was recorded for 52 weeks from 3600 m3 open digesting tanks.
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Buffer Zone Prediction for Simulated Earthquake-Induced Slope Failures in Mesilou, Kundasang, Sabah, Malaysia
(IOP Publishing, 2023) H F W S Erfen; B Musta
The research area is located at Mesilou, Kundasang, Sabah at 1400 meters to 2000 meters from the sea level. It focuses on slopes of Pinousuk Gravel Unit, tilloid deposits from the glaciation of Mount Kinabalu during Late Pleistocene age. Four slopes were chosen for the estimation of "buffer zone" of earthquake-induced slope failures. The simulation of the earthquake is conducted by using shaking table method and the earthquake event occurred in the research area on year 2018.
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Bukti Penggunaan Elektrik Memimpin Perubahan Iklim di Malaysia
(Penerbit UKM, 2018) Yogambigai Rajamoorthya; Ooi Bee Chena; Subramaniam Munusamy
Penggunaan elektrik di Malaysia meningkatkan permintaan sebagai salah satu daya penggerak pembangunan ekonomi. Sumber utama penjanaan tenaga elektrik di Malaysia bergantung pada bahan bakar fosil yang menyebabkan pencemaran udara dan kekurangan sumber daya alam (fosil) pada masa akan datang jika kaedah ini terus berlanjut. Selain itu, ini akan menyebabkan masalah serius seperti pemeliharaan pilihan tenaga dan akan merosakkan alam sekitar. Kajian ini menyiasat hubungan antara pembolehubah iklim dan penggunaan tenaga elektrik di Malaysia. Pembolehubah iklim yang penting termasuk suhu purata, hujan purata, kawasan hutan, pelepasan karbon dioksida dan tanah pertanian sepanjang tempoh 1991 hingga 2015.
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Carbon dioxide balance of an oil palm plantation established on tropical peat
(Elsevier, 2020) Frankie Kiew; Ryuichi Hirata; Takashi Hirano; Wong Guan Xhuan; Edward Baran Aries; Kevin Kemudang; Joseph Wenceslaus; Lo Kim San; Lulie Melling
Carbon dioxide (CO2) emission through accelerated peat decomposition is one of the main environmental concerns in the conversion of peatlands into plantations, which undergo drainage to increase palm growth rates and production. Changes in aboveground biomass might also significantly alter the CO2 exchange dynamics of the ecosystem. Despite the potential changes in CO2 balance due to land conversion, so far no study has been conducted using the eddy covariance technique about the CO2 balance of oil palm plantations established on peat. We have monitored the eddy CO2 flux above an oil palm plantation on peat in Sarawak, Malaysia since 2011.
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Carbon Emission Pinch Analysis: an application to the transportation sector in Iskandar Malaysia for 2025
(Springer, 2018) Ahmad Fakrul Ramli; Zarina Ab Muis; Wai Shin Ho; Ahmad Muzammil Idris; Aminullah Mohtar
The energy sector has grown significantly over the years, causing an increase in carbon emission that has led to serious global warming problems. Consequently, electric vehicles (EVs) have become a favourable solution in the transportation sector due to their green technology attributes. This paper aims to apply the Carbon Emission Pinch Analysis (CEPA) method to the transportation sector in Iskandar Malaysia.
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Carbon footprint assessment at Universiti Teknologi MARA Seri Iskandar campus, Malaysia
(UiTM Press, 2017) Nor Izana Mohd Shobri; Wan Noor Anira Hj Wan Ali @ Yaacob; Norizan Mt Akhir; Siti Rasidah Md Sakip
The purpose of this study is to assess the carbon footprint emission at UiTM Perak, Seri Iskandar Campus. The assessment focuses on electrical power and transportation usage. Questionnaires were distributed to the staffs and students to survey their transportation usage in the year 2014 while for electrical consumption, the study used total energy consumed in the year 2014.
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Carbon monoxide 'hot-spots' in urban area of Kota Kinabalu City, Sabah
(UMS, 2015) Justin Sentian; Ong Pei Tze
Air dispersion models have been widely used to address air quality problems at microscale in urban environments, as they are capable of providing valuable information for better and more efficient urban air quality planning. The aim of this paper was to measure the CO concentration near roadways and intersections at three major roads in Kota Kinabalu city centre during morning, afternoon and evening peak hours using CAL3QHC dispersion model and also to identify CO concentration;hot-spots'.
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Carbon stores from a tropical seagrass meadow in the midst of anthropogenic disturbance
(Elsevier, 2017) Mohammad Rozaimi; Mohammad Fairoz; Tuan Mohamad Hakimi; Nur Hidayah Hamdan; Ramlan Omar; Masni Mohd Ali; Siti Aishah Tahirin
Seagrass meadows provide important carbon sequestration services but anthropogenic activities modify the natural ecosystem and inevitably lower carbon storage capacity. The tropical mixed-species meadows in the Sungai Pulai Estuary (Johor, Malaysia) are impacted by such activities. In this study, we provide baseline estimates for carbon stores analysed from sediment cores.