Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia
A study was carried out to check the sensitivity of evapotranspiration estimation due to changes in climate. The study used 30 years of data from the meteorological station in the FELCRA paddy estate, Seberang Perak, Peninsular Malaysia. The effect of changes in the climatic variables, temperatur...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Universiti Putra Malaysia Press
2005
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3867/ http://psasir.upm.edu.my/id/eprint/3867/1/Pages_from_JST_VOL._13_NO._2-7.pdf |
| _version_ | 1848839652054663168 |
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| author | Lee, Teang Shui Mohamed Najim, Mohamed Mujithaba Haque, Md. Aminul Feng, Huang Yuk |
| author_facet | Lee, Teang Shui Mohamed Najim, Mohamed Mujithaba Haque, Md. Aminul Feng, Huang Yuk |
| author_sort | Lee, Teang Shui |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A study was carried out to check the sensitivity of evapotranspiration estimation
due to changes in climate. The study used 30 years of data from the
meteorological station in the FELCRA paddy estate, Seberang Perak, Peninsular
Malaysia. The effect of changes in the climatic variables, temperature, solar
radiation, relative humidity and wind speed on evapotranspiration were analyzed.
Results showed that the mean temperature, mean relative humidity, mean wind
speed, and net global radiation have changed by + 0.182 oC, -0.73%, -0.0365
mis, and +0.146 MJ/m2 respectively per decade, while the short wave radiation
received has decreased by 0.0037 MJ/m2 per decade. The statistical analysis of
the evapotranspiration estimations using selected methods showed that the
Penman-Monteith, Blaney-Criddle and Pan evaporation methods give similar
estimations (P = 0.05) and are suitable for the study area. When changes to the
present climate are imposed for future decades, the over-estimation rate is
linear with the Blaney-Criddle and Penman methods whereas for the PenmanMonteith
method it is exponential. The overall increment expected after 5
decades is 5.3% and 6.9% with Penman and Blaney-Criddle methods respectively.
The Penman-Monteith shows a 74.4% increment in the evapotranspiration over
the next five decades. |
| first_indexed | 2025-11-15T07:14:51Z |
| format | Article |
| id | upm-3867 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:14:51Z |
| publishDate | 2005 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-38672013-05-27T07:11:53Z http://psasir.upm.edu.my/id/eprint/3867/ Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia Lee, Teang Shui Mohamed Najim, Mohamed Mujithaba Haque, Md. Aminul Feng, Huang Yuk A study was carried out to check the sensitivity of evapotranspiration estimation due to changes in climate. The study used 30 years of data from the meteorological station in the FELCRA paddy estate, Seberang Perak, Peninsular Malaysia. The effect of changes in the climatic variables, temperature, solar radiation, relative humidity and wind speed on evapotranspiration were analyzed. Results showed that the mean temperature, mean relative humidity, mean wind speed, and net global radiation have changed by + 0.182 oC, -0.73%, -0.0365 mis, and +0.146 MJ/m2 respectively per decade, while the short wave radiation received has decreased by 0.0037 MJ/m2 per decade. The statistical analysis of the evapotranspiration estimations using selected methods showed that the Penman-Monteith, Blaney-Criddle and Pan evaporation methods give similar estimations (P = 0.05) and are suitable for the study area. When changes to the present climate are imposed for future decades, the over-estimation rate is linear with the Blaney-Criddle and Penman methods whereas for the PenmanMonteith method it is exponential. The overall increment expected after 5 decades is 5.3% and 6.9% with Penman and Blaney-Criddle methods respectively. The Penman-Monteith shows a 74.4% increment in the evapotranspiration over the next five decades. Universiti Putra Malaysia Press 2005 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3867/1/Pages_from_JST_VOL._13_NO._2-7.pdf Lee, Teang Shui and Mohamed Najim, Mohamed Mujithaba and Haque, Md. Aminul and Feng, Huang Yuk (2005) Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia. Pertanika Journal of Science & Technology, 13 (2). pp. 237-248. ISSN 0128-7680 English |
| spellingShingle | Lee, Teang Shui Mohamed Najim, Mohamed Mujithaba Haque, Md. Aminul Feng, Huang Yuk Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia |
| title | Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia |
| title_full | Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia |
| title_fullStr | Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia |
| title_full_unstemmed | Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia |
| title_short | Modelling of Changes in Evapotranspiration for an Area in Peninsular Malaysia |
| title_sort | modelling of changes in evapotranspiration for an area in peninsular malaysia |
| url | http://psasir.upm.edu.my/id/eprint/3867/ http://psasir.upm.edu.my/id/eprint/3867/1/Pages_from_JST_VOL._13_NO._2-7.pdf |