Research Publications
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Publication Open Access Unmasking climate vulnerability in Africa: the role of CO2 and CH4 emissions on rising temperatures and sea levels(www.nature.com, 2025-05-02) Gunaratne, T.; Liyanage, S.; Punchihewa, C; Badurdeen, S; Jayathilaka, RClimate change influenced by anthropogenic emissions is a global occurrence affecting the Mean Surface Temperature (MST) and Mean Sea Level (MSL) patterns. The African continent contributes to the lowest Greenhouse Gas (GHG) emissions globally. However, GHG emissions, particularly Carbon Dioxide (CO2) and Methane (CH4) emission patterns, show a continuous increase in the African region, reflecting the importance of practising economic growth in the continent with sustainable environmental policies to meet future global climate targets. Given Africa’s increasing emissions and the continent’s vulnerability to climate change, this study contributes to the existing literature by assessing the continental and country-wise impact of CO2 and CH4 emissions on MST and the resulting impact on MSL through Fixed Effect (FE) panel estimation and Simple Linear Regression (SLR). The research employs data from 1993 to 2020 for fifty-four African countries. The study’s main findings show that CO2 and CH4 positively impact MST at a 1% significance level, and MST positively impacts MSL at a 5% significance level. This study focuses on continent-specific and country-specific emissions and their impacts and proposes policy measures to mitigate the emissions in the African continent.Publication Embargo Renewable realities: Charting a greener course for the world's high-emitting nations through information technology insights(Wiley, 2024-11-14) Ranthilake, T; Caldera, Y; Senevirathna, D; Gunawardana, H; Jayathilaka, R; Peter, SCarbon dioxide (CO₂) is the most abundant gas among all greenhouse gas emissions,severely impacting global warming. This study examines the impact of Informationand Communication Technology (ICT), population dynamics, Per Capita GrossDomestic Product (PGDP), and Renewable Energy Consumption (REC) on CO₂ on aglobal scale, representing 38 countries selected using the Pareto principle. Resultsfrom the panel regression model indicate a significantly positive relationship betweenICT, PGDP, and population on CO₂ emissions. In contrast, REC exhibits a negativerelationship. The Multiple Linear Regression model shows that an increase in PGDPleads to higher CO₂ emissions, except in Uzbekistan. ICT increases emissions in theUnited States, Argentina, Australia, Canada, and Egypt. Population growth raisesemissions, except in the United States, France, Germany, and Russia. REC reducesCO₂ emissions in most countries. Policymakers in individual countries can gain a pre-cise understanding of how these variables impact CO₂ emissions, enabling them tomitigate the risks associated with global warmingPublication Embargo Driving Towards Sustainability During the Construction Phase of Roads in Sri Lanka by Mitigating CO2 Emission: A Systematic Literature Review Approach(SLIIT, Faculty of Engineering, 2024-10) Yaparathnea, I.H.G.Y.M. Udari; Guruge, KClimate change has become a pressing concern for humanity in the contemporary era. Scientists believe that the acceleration of global warming and climate change is directly linked to the rising concentration of greenhouse gases, particularly carbon dioxide (CO2). This has become a challenge for many developing countries. The construction industry is one of the sectors that significantly contributed to heightened carbon emissions into the environment. Road construction involves various activities and processes that release substantial amounts of CO2 into the atmosphere. Addressing these issues are crucial for mitigating the adverse effects of climate change and fostering sustainable development. The development of road infrastructure generates CO2 emissions across various stages. Notably, the construction stage is responsible for a significant portion of these emissions. Despite this, research efforts in Sri Lanka have primarily focused on reducing CO2 emissions in building construction projects, with limited attention to strategies specifically targeting road construction projects. The construction phase of road development has thus far been overlooked in terms of CO2 emission reduction strategies. Consequently, this study seeks to raise awareness among academics, professionals, and practitioners involved in road development projects about the factors influencing CO2 emissions during the road construction phase. The objectives of this study are to examine the factors affecting CO2 emissions during road construction development, identify the activities and processes contributing to CO2 emissions during the construction phase of road projects, explore existing sustainable strategies used in road construction to mitigate CO2 emissions, and assess their applicability to the Sri Lankan Road construction sector. A systematic literature review was conducted to achieve these objectives, selecting the fifty-six most relevant past research studies.