Impact of rainfall change on the agro-ecological regions of Sri Lanka
Changes in future rainfall distribution for the agro-ecological regions of Sri Lanka were analyzed. The baseline period to compare future predictions was taken as 1970 to 2000. Downscaled climate change prediction grids were extracted from the UK Hadley Centre for Climate Prediction and Research Mod...
| Autores principales: | , |
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| Formato: | Conference Paper |
| Lenguaje: | Inglés |
| Publicado: |
2013
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| Acceso en línea: | https://hdl.handle.net/10568/67629 |
| _version_ | 1855538569239592960 |
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| author | Muthuwatta, Lal P. Liyanage, Panni Kankanamlage Nirosha Chandani |
| author_browse | Liyanage, Panni Kankanamlage Nirosha Chandani Muthuwatta, Lal P. |
| author_facet | Muthuwatta, Lal P. Liyanage, Panni Kankanamlage Nirosha Chandani |
| author_sort | Muthuwatta, Lal P. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Changes in future rainfall distribution for the agro-ecological regions of Sri Lanka were analyzed. The baseline period to compare future predictions was taken as 1970 to 2000. Downscaled climate change prediction grids were extracted from the UK Hadley Centre for Climate Prediction and Research Model (HadCM3). These grids were extracted for 2050. In the baseline period 76 stations of147 showed decreasing trends in annual rainfall and 71 increasing trends. Thirty six of the 76 stations showing a decrease were in the wet zone. In the intermediate zone 17 stations showed increasing trends and in the dry zone 34 stations indicated increasing trends. Mean annual rainfall (MAR) for the baseline period for the whole country was 2094 mm/year while the projected value for 2050 is 2249 mm/year. The increase of MAR over Sri Lanka by 2050 compared to the baseline period is about 7%. The comparison of rainfall between the baseline period and 2050 showed that some areas of the dry zone will receive MAR of more than 1750 mm and could be classified and included into the intermediate zone by 2050. Further, the increase of MAR for 11 agroecological regions goes beyond the variability observed in the baseline data set. |
| format | Conference Paper |
| id | CGSpace67629 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| record_format | dspace |
| spelling | CGSpace676292023-06-08T20:46:01Z Impact of rainfall change on the agro-ecological regions of Sri Lanka Muthuwatta, Lal P. Liyanage, Panni Kankanamlage Nirosha Chandani climate change climatic zones agroecology rain arid zones meteorological stations temperature evapotranspiration Changes in future rainfall distribution for the agro-ecological regions of Sri Lanka were analyzed. The baseline period to compare future predictions was taken as 1970 to 2000. Downscaled climate change prediction grids were extracted from the UK Hadley Centre for Climate Prediction and Research Model (HadCM3). These grids were extracted for 2050. In the baseline period 76 stations of147 showed decreasing trends in annual rainfall and 71 increasing trends. Thirty six of the 76 stations showing a decrease were in the wet zone. In the intermediate zone 17 stations showed increasing trends and in the dry zone 34 stations indicated increasing trends. Mean annual rainfall (MAR) for the baseline period for the whole country was 2094 mm/year while the projected value for 2050 is 2249 mm/year. The increase of MAR over Sri Lanka by 2050 compared to the baseline period is about 7%. The comparison of rainfall between the baseline period and 2050 showed that some areas of the dry zone will receive MAR of more than 1750 mm and could be classified and included into the intermediate zone by 2050. Further, the increase of MAR for 11 agroecological regions goes beyond the variability observed in the baseline data set. 2013 2015-07-30T06:07:45Z 2015-07-30T06:07:45Z Conference Paper https://hdl.handle.net/10568/67629 en Limited Access Muthuwatta, Lal; Liyanage, P. K. N. C. 2013. Impact of rainfall change on the agro-ecological regions of Sri Lanka. In Gunasena, H. P. M.; Gunathilake, H. A. J.; Everard, J. M. D. T.; Ranasinghe, C. S.; Nainanayake, A. D. (Eds.). Proceedings of the International Conference on Climate Change Impacts and Adaptations for Food and Environment Security on Sustaining Agriculture Under Changing Climate. Colombo, Sri Lanka, 30-31 July 2013. Lunuwila, Sri Lanka: Coconut Research Institute; Colombo, Sri Lanka: Ministry of Environment and Renewable Energy; New Delhi, India: World Agroforestry Center Regional Office. pp.59-66. |
| spellingShingle | climate change climatic zones agroecology rain arid zones meteorological stations temperature evapotranspiration Muthuwatta, Lal P. Liyanage, Panni Kankanamlage Nirosha Chandani Impact of rainfall change on the agro-ecological regions of Sri Lanka |
| title | Impact of rainfall change on the agro-ecological regions of Sri Lanka |
| title_full | Impact of rainfall change on the agro-ecological regions of Sri Lanka |
| title_fullStr | Impact of rainfall change on the agro-ecological regions of Sri Lanka |
| title_full_unstemmed | Impact of rainfall change on the agro-ecological regions of Sri Lanka |
| title_short | Impact of rainfall change on the agro-ecological regions of Sri Lanka |
| title_sort | impact of rainfall change on the agro ecological regions of sri lanka |
| topic | climate change climatic zones agroecology rain arid zones meteorological stations temperature evapotranspiration |
| url | https://hdl.handle.net/10568/67629 |
| work_keys_str_mv | AT muthuwattalalp impactofrainfallchangeontheagroecologicalregionsofsrilanka AT liyanagepannikankanamlageniroshachandani impactofrainfallchangeontheagroecologicalregionsofsrilanka |