Regional climate scenarios using a statistical downscalling approach
The climate impact studies in hydrology often rely on climate change information at fine spatial resolution. However, General Circulation Models (GCMs), which are among the most advanced tools for estimating future climate change scenarios, operate on a coarse scale. Therefore the output from a GCM...
| Main Authors: | , , , , |
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| Format: | Monograph |
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Faculty of Civil Engineering
2009
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| Online Access: | http://eprints.utm.my/7873/ |
| _version_ | 1848891564552617984 |
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| author | Harun, Sobri Shamsudin, Supiah Hanapi, Muhammad Nassir Mohd. Amin, Mohd. Zaki Ismail, Nurul Adzura |
| author_facet | Harun, Sobri Shamsudin, Supiah Hanapi, Muhammad Nassir Mohd. Amin, Mohd. Zaki Ismail, Nurul Adzura |
| author_sort | Harun, Sobri |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | The climate impact studies in hydrology often rely on climate change information at fine spatial resolution. However, General Circulation Models (GCMs), which are among the most advanced tools for estimating future climate change scenarios, operate on a coarse scale. Therefore the output from a GCM has to be downscaled to obtain the information relevant to hydrologic studies. The results presented in this report have indicated that it is feasible to link large-scale atmospheric variables by GCM simulations from Hadley Centre 3rd generation (HadCM3) outputs with daily precipitation at a local site. Statistical Downscaling Model (SDSM) was applied using three set of data; daily precipitation data for the period 1961-1990 corresponding to Endau rainfall (Station no. 2536168) and Muar (Station no. 2228016) located in Johor at the Southern region of Peninsular Malaysia; The observed daily data of large-scale predictor variables derived from the National Centre for Environmental Prediction (NCEP) and GCM simulations from Hadley Centre 3rd generation (HadCM3). The HadCM3 data from 1961 to 2099 were extracted for 30-year time slices. The result clearly shows increasing increment of daily mean precipitation of most of the months within a year in comparison to current 1961-1990 to future projections 2020’s, 2050’s and 2080’s considering SRES A2 and B2 scenarios developed by the Intergovernmental Panel on Climate Change (IPCC). Frequency analysis techniques were carried out using the observed annual daily maximum precipitation for period 1961-1990 and downscaled future periods 2020’s, 2050’s and 2080’s. Therefore, it does appear that SDSM can be considered as a bench mark model to interpret the impact of climate change. |
| first_indexed | 2025-11-15T20:59:58Z |
| format | Monograph |
| id | utm-7873 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T20:59:58Z |
| publishDate | 2009 |
| publisher | Faculty of Civil Engineering |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-78732017-07-25T08:25:11Z http://eprints.utm.my/7873/ Regional climate scenarios using a statistical downscalling approach Harun, Sobri Shamsudin, Supiah Hanapi, Muhammad Nassir Mohd. Amin, Mohd. Zaki Ismail, Nurul Adzura TS Manufactures The climate impact studies in hydrology often rely on climate change information at fine spatial resolution. However, General Circulation Models (GCMs), which are among the most advanced tools for estimating future climate change scenarios, operate on a coarse scale. Therefore the output from a GCM has to be downscaled to obtain the information relevant to hydrologic studies. The results presented in this report have indicated that it is feasible to link large-scale atmospheric variables by GCM simulations from Hadley Centre 3rd generation (HadCM3) outputs with daily precipitation at a local site. Statistical Downscaling Model (SDSM) was applied using three set of data; daily precipitation data for the period 1961-1990 corresponding to Endau rainfall (Station no. 2536168) and Muar (Station no. 2228016) located in Johor at the Southern region of Peninsular Malaysia; The observed daily data of large-scale predictor variables derived from the National Centre for Environmental Prediction (NCEP) and GCM simulations from Hadley Centre 3rd generation (HadCM3). The HadCM3 data from 1961 to 2099 were extracted for 30-year time slices. The result clearly shows increasing increment of daily mean precipitation of most of the months within a year in comparison to current 1961-1990 to future projections 2020’s, 2050’s and 2080’s considering SRES A2 and B2 scenarios developed by the Intergovernmental Panel on Climate Change (IPCC). Frequency analysis techniques were carried out using the observed annual daily maximum precipitation for period 1961-1990 and downscaled future periods 2020’s, 2050’s and 2080’s. Therefore, it does appear that SDSM can be considered as a bench mark model to interpret the impact of climate change. Faculty of Civil Engineering 2009-01-31 Monograph NonPeerReviewed Harun, Sobri and Shamsudin, Supiah and Hanapi, Muhammad Nassir and Mohd. Amin, Mohd. Zaki and Ismail, Nurul Adzura (2009) Regional climate scenarios using a statistical downscalling approach. Project Report. Faculty of Civil Engineering, Skudai, Johor. (Unpublished) http://www.penerbit.utm.my |
| spellingShingle | TS Manufactures Harun, Sobri Shamsudin, Supiah Hanapi, Muhammad Nassir Mohd. Amin, Mohd. Zaki Ismail, Nurul Adzura Regional climate scenarios using a statistical downscalling approach |
| title | Regional climate scenarios using a statistical downscalling approach |
| title_full | Regional climate scenarios using a statistical downscalling approach |
| title_fullStr | Regional climate scenarios using a statistical downscalling approach |
| title_full_unstemmed | Regional climate scenarios using a statistical downscalling approach |
| title_short | Regional climate scenarios using a statistical downscalling approach |
| title_sort | regional climate scenarios using a statistical downscalling approach |
| topic | TS Manufactures |
| url | http://eprints.utm.my/7873/ http://eprints.utm.my/7873/ |