Academic Journal
Development of an Integrated Approach for the Assessment of Climate Change Impacts on the Hydro-Meteorological Characteristics of the Mahaweli River Basin, Sri Lanka
| العنوان: | Development of an Integrated Approach for the Assessment of Climate Change Impacts on the Hydro-Meteorological Characteristics of the Mahaweli River Basin, Sri Lanka |
|---|---|
| المؤلفون: | Hemakanth Selvarajah, Toshio Koike, Mohamed Rasmy, Katsunori Tamakawa, Akio Yamamoto, Masuru Kitsuregawa, Li Zhou |
| المصدر: | Water; Volume 13; Issue 9; Pages: 1218 |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute |
| سنة النشر: | 2021 |
| المجموعة: | MDPI Open Access Publishing |
| مصطلحات موضوعية: | climate change impact assessment, general circulation models, hydrological modelling, water energy budget-based rainfall-runoff-inundation model, data integration and analysis system, flood and drought |
| جغرافية الموضوع: | agris |
| الوصف: | Climate change is increasingly sensed by nations vulnerable to water-related disasters, and governments are acting to mitigate disasters and achieve sustainable development. Uncertainties in General Circulation Models’ (GCM) rainfall projections and seamless long-term hydrological simulations incorporating warming effects are major scientific challenges in assessing climate change impacts at the basin scale. Therefore, the Data Integration and Analysis System (DIAS) of Japan and the Water Energy Budget-based Rainfall-Runoff-Inundation model (WEB-RRI) were utilized to develop an integrated approach, which was then applied to the Mahaweli River Basin (MRB) in Sri Lanka to investigate climate change impacts on its hydro-meteorological characteristics. The results for the Representative Concentration Pathway (RCP8.5) scenario from four selected GCMs showed that, with an average temperature increase of 1.1 °C over the 20 years in future (2026 to 2045), the basin will experience more extreme rainfall (increase ranging 204 to 476 mm/year) and intense flood disasters and receive sufficient water in the future climate (inflow increases will range between 11 m3/s to 57 m3/s). The socio-economic damage due to flood inundation will also increase in the future climate. However, qualitatively, the overall trend of model responses showed an increasing pattern in future meteorological droughts whereas there is uncertainty in hydrological droughts. Policymakers can utilize these results and react to implementing soft or hard countermeasures for future policymaking. The approach can be implemented for climate change impact assessment of hydro-meteorology in any other river basin worldwide. |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://dx.doi.org/10.3390/w13091218 |
| DOI: | 10.3390/w13091218 |
| الاتاحة: | https://doi.org/10.3390/w13091218 |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.D4DACC74 |
| قاعدة البيانات: | BASE |
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