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Water and Environment for Sustainability

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrology".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 1561

Special Issue Editors


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Guest Editor
Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih 43500, Selangor, Malaysia
Interests: water resources management; water engineering; hydrology; hydrological modeling; environment hydrologic; hydro-environmental engineering; flood modeling; rivers hydraulics; water quality; coastal and estuarine development
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih 43500, Selangor, Malaysia
Interests: microplastics and microfibre pollution; marine and freshwater pollution; advanced water and wastewater treatment; sustainable filtration technologies; environmental remediation; environmental nanomaterials; nature-based treatment solutions; aquatic ecotoxicology; human health impacts of pollutants

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Guest Editor
Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih 43500, Selangor, Malaysia
Interests: water quality; water management; water pollution; wastewater management; biomass and biochar; pyrolysis; bioretention
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue focuses on water and environmental sustainability across diverse research fields. Addressing the world’s pressing water and environmental challenges is more critical than ever as we strive toward meaningful sustainable development for the benefit of future generations.

As part of our commitment to sustainability, this Special Issue seeks to showcase publications with a global perspective. It will serve as an essential platform for scientists, researchers, engineers, industry professionals, managers, and policymakers to engage, share, and exchange the latest scientific insights, management strategies, and engineering solutions related to water and the environment. These efforts support the implementation of the 17 United Nations Sustainable Development Goals (SDGs).

Sustainable management of global water and environmental issues is fundamental to achieving all SDGs, positively impacting our world and improving quality of life for all. Therefore, this Special Issue warmly welcomes contributions from experts across academia, research institutions, industry, non-governmental organizations, and government agencies. It offers an opportunity to share recent advancements in scientific knowledge, management approaches, and engineering innovations addressing water and environmental challenges.

Prof. Dr. Fang Yenn Teo
Dr. Selvam Sivathass Bannir
Dr. Anurita Selvarajoo
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydrology and water resources
  • rivers, lakes, estuaries, and seas
  • extreme events and climate change
  • water supply and wastewater treatment
  • environmental pollution and protection
  • sustainable technology and engineering
  • sustainable development goals
  • sustainable environment

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Published Papers (2 papers)

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Research

24 pages, 6226 KB  
Article
Enhanced IMERG SPE Using LSTM with a Novel Adaptive Regularization Method
by Seng Choon Toh, Wan Zurina Wan Jaafar, Cia Yik Ng, Eugene Zhen Xiang Soo, Majid Mirzaei, Fang Yenn Teo and Sai Hin Lai
Water 2026, 18(8), 905; https://doi.org/10.3390/w18080905 - 10 Apr 2026
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Abstract
Satellite-based precipitation estimates (SPE) provide essential spatial coverage and near real-time availability for hydrological applications but often exhibit systematic biases in regions characterized by complex terrain and strong climatic variability, limiting their reliability for flood-related studies. To address these limitations, this study proposes [...] Read more.
Satellite-based precipitation estimates (SPE) provide essential spatial coverage and near real-time availability for hydrological applications but often exhibit systematic biases in regions characterized by complex terrain and strong climatic variability, limiting their reliability for flood-related studies. To address these limitations, this study proposes an Adaptive Regularization framework integrated within a Long Short-Term Memory (LSTM) model to enhance satellite–gauge rainfall fusion beyond conventional optimization strategies. The framework dynamically adjusts learning rate and weight decay during training based on validation performance and overfitting indicators, improving training stability, data efficiency, and model generalization across diverse precipitation regimes. The proposed approach was applied to refine Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG) daily rainfall estimates over the flood-prone east coast of Peninsular Malaysia. Model performance was assessed against ten optimization algorithms using correlation coefficient (CC), mean absolute error (MAE), normalized root mean squared error (NRMSE), percentage bias (PBias), and Kling–Gupta efficiency (KGE). Results show that the Adaptive Regularization framework consistently outperforms all benchmark optimizers, achieving an MAE of 6.87, CC of 0.68, NRMSE of 1.84, and KGE of 0.56. Overall, the proposed framework enhances spatial consistency and robustness across monsoon seasons, offering a scalable solution for improving SPE in flood-prone regions. Full article
(This article belongs to the Special Issue Water and Environment for Sustainability)
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22 pages, 14244 KB  
Article
Impacts of Climatic Phenomena and Terrain on December 2021 Extreme Rainfall over Peninsular Malaysia
by Yixiao Chen, Andy Chan, Li Li, Maggie Chel Gee Ooi, Jeong Yik Diong, Soon Yee Wong and Fang Yenn Teo
Water 2026, 18(7), 818; https://doi.org/10.3390/w18070818 - 30 Mar 2026
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Abstract
An extreme rainfall event that occurred from 16 to 18 December 2021 along the coastal regions of Peninsular Malaysia (PM) caused widespread flooding and substantial socioeconomic impacts. This study investigates the mechanisms leading to this event, focusing on the roles of climatic phenomena [...] Read more.
An extreme rainfall event that occurred from 16 to 18 December 2021 along the coastal regions of Peninsular Malaysia (PM) caused widespread flooding and substantial socioeconomic impacts. This study investigates the mechanisms leading to this event, focusing on the roles of climatic phenomena and local terrains. Two atmospheric interactions play key roles in triggering the event. Firstly, a strong cold surge (CS) associated with the East Asian winter monsoon (EAWM) interacted with the easterly surge over the southern South China Sea, leading to the formation of Borneo vortex. Secondly, a strong northeasterly and CS largely contributed to enhancing and transporting the vortex towards the PM and across the Titiwangsa mountain ranges. The phase change of the Indian Ocean Dipole (IOD) facilitated the eastward propagation of the vortex. Sumatra and PM terrains significantly modulated vortex evolution and moisture convergence over the Strait of Malacca. These findings are analyzed to shed light on interactions between large-scale climate drivers and localized terrain in generating extreme rainfall, emphasizing the necessity of multi-scale analysis for model accuracy. Full article
(This article belongs to the Special Issue Water and Environment for Sustainability)
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