Hydrological impacts of climate change on the future streamflow of three unregulated catchments of the Australian hydrologic reference stations
Copyright © 2019 Inderscience Enterprises Ltd. A physically-based distributed hydrological model (BTOPMC) is adopted to assess the impact of climate-change on the hydrological-behaviour of three-contributing catchments of the Australian hydrologic reference stations (HRSs). Both historical and futur...
| Main Authors: | , |
|---|---|
| Format: | Journal Article |
| Published: |
2019
|
| Online Access: | http://hdl.handle.net/20.500.11937/79237 |
| _version_ | 1848764018114691072 |
|---|---|
| author | Al-Safi, H.I.J. Sarukkalige, Ranjan |
| author_facet | Al-Safi, H.I.J. Sarukkalige, Ranjan |
| author_sort | Al-Safi, H.I.J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Copyright © 2019 Inderscience Enterprises Ltd. A physically-based distributed hydrological model (BTOPMC) is adopted to assess the impact of climate-change on the hydrological-behaviour of three-contributing catchments of the Australian hydrologic reference stations (HRSs). Both historical and future streamflow trends are compared and discussed. Firstly, the BTOPMC-model was calibrated and validated based on the observed hydro-meteorological data from the three-catchments. The calibrated BTOPMC-model was then forced with the downscaled future climate signals from a multi-model ensemble of eight-GCMs of the CMIP5 under the RCP4.5 and RCP8.5 scenarios to simulate the future daily streamflow at the three-HRSs for the mid (2046-2065) and late (2080-2099) of the 21st-century. Nearly all GCMs predict a reduction-tendency in mean-annual rainfall and an increase in temperature and potential-evapotranspiration across the studied catchments. The mean annual-streamflow also shows reductiontendencies during the future-periods ranged between 26%-53% at Dingo-Road HRS, 10%-25% at Haystack-HRS and 6%-33% at Coggan-HRS relative to the control-run. |
| first_indexed | 2025-11-14T11:12:41Z |
| format | Journal Article |
| id | curtin-20.500.11937-79237 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:12:41Z |
| publishDate | 2019 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-792372020-08-03T00:44:02Z Hydrological impacts of climate change on the future streamflow of three unregulated catchments of the Australian hydrologic reference stations Al-Safi, H.I.J. Sarukkalige, Ranjan Copyright © 2019 Inderscience Enterprises Ltd. A physically-based distributed hydrological model (BTOPMC) is adopted to assess the impact of climate-change on the hydrological-behaviour of three-contributing catchments of the Australian hydrologic reference stations (HRSs). Both historical and future streamflow trends are compared and discussed. Firstly, the BTOPMC-model was calibrated and validated based on the observed hydro-meteorological data from the three-catchments. The calibrated BTOPMC-model was then forced with the downscaled future climate signals from a multi-model ensemble of eight-GCMs of the CMIP5 under the RCP4.5 and RCP8.5 scenarios to simulate the future daily streamflow at the three-HRSs for the mid (2046-2065) and late (2080-2099) of the 21st-century. Nearly all GCMs predict a reduction-tendency in mean-annual rainfall and an increase in temperature and potential-evapotranspiration across the studied catchments. The mean annual-streamflow also shows reductiontendencies during the future-periods ranged between 26%-53% at Dingo-Road HRS, 10%-25% at Haystack-HRS and 6%-33% at Coggan-HRS relative to the control-run. 2019 Journal Article http://hdl.handle.net/20.500.11937/79237 10.1504/IJHST.2019.102420 restricted |
| spellingShingle | Al-Safi, H.I.J. Sarukkalige, Ranjan Hydrological impacts of climate change on the future streamflow of three unregulated catchments of the Australian hydrologic reference stations |
| title | Hydrological impacts of climate change on the future streamflow of three unregulated catchments of the Australian hydrologic reference stations |
| title_full | Hydrological impacts of climate change on the future streamflow of three unregulated catchments of the Australian hydrologic reference stations |
| title_fullStr | Hydrological impacts of climate change on the future streamflow of three unregulated catchments of the Australian hydrologic reference stations |
| title_full_unstemmed | Hydrological impacts of climate change on the future streamflow of three unregulated catchments of the Australian hydrologic reference stations |
| title_short | Hydrological impacts of climate change on the future streamflow of three unregulated catchments of the Australian hydrologic reference stations |
| title_sort | hydrological impacts of climate change on the future streamflow of three unregulated catchments of the australian hydrologic reference stations |
| url | http://hdl.handle.net/20.500.11937/79237 |