Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change
Analysis of long-term rainfall trends provides a wealth of information on effective crop planning and water resource management, and a better understanding of climate variability over time. This study reveals the spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | Inglés |
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MDPI
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/113001 |
| _version_ | 1855530349664141312 |
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| author | Alahacoon, Niranga Edirisinghe, M. |
| author_browse | Alahacoon, Niranga Edirisinghe, M. |
| author_facet | Alahacoon, Niranga Edirisinghe, M. |
| author_sort | Alahacoon, Niranga |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Analysis of long-term rainfall trends provides a wealth of information on effective crop planning and water resource management, and a better understanding of climate variability over time. This study reveals the spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change. The exclusivity of the study is the use of rainfall data that provide spatial variability instead of the traditional location-based approach. Henceforth, daily rainfall data available at Climate Hazards Group InfraRed Precipitation corrected with stations (CHIRPS) data were used for this study. The geographic information system (GIS) is used to perform spatial data analysis on both vector and raster data. Sen’s slope estimator and the Mann–Kendall (M–K) test are used to investigate the trends in annual and seasonal rainfall throughout all districts and climatic zones of Sri Lanka. The most important thing reflected in this study is that there has been a significant increase in annual rainfall from 1989 to 2019 in all climatic zones (wet, dry, intermediate, and Semi-arid) of Sri Lanka. The maximum increase is recorded in the wet zone and the minimum increase is in the semi-arid zone. There could be an increased risk of floods in the southern and western provinces in the future, whereas areas in the eastern and southeastern districts may face severe droughts during the northeastern monsoon. It is advisable to introduce effective drought and flood management and preparedness measures to reduce the respective hazard risk levels. |
| format | Journal Article |
| id | CGSpace113001 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1130012025-02-19T13:42:33Z Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change Alahacoon, Niranga Edirisinghe, M. rainfall patterns trends climate change spatial variation weather hazards climatic zones natural disasters precipitation flooding monsoons drought arid zones semiarid zones geographical information systems Analysis of long-term rainfall trends provides a wealth of information on effective crop planning and water resource management, and a better understanding of climate variability over time. This study reveals the spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change. The exclusivity of the study is the use of rainfall data that provide spatial variability instead of the traditional location-based approach. Henceforth, daily rainfall data available at Climate Hazards Group InfraRed Precipitation corrected with stations (CHIRPS) data were used for this study. The geographic information system (GIS) is used to perform spatial data analysis on both vector and raster data. Sen’s slope estimator and the Mann–Kendall (M–K) test are used to investigate the trends in annual and seasonal rainfall throughout all districts and climatic zones of Sri Lanka. The most important thing reflected in this study is that there has been a significant increase in annual rainfall from 1989 to 2019 in all climatic zones (wet, dry, intermediate, and Semi-arid) of Sri Lanka. The maximum increase is recorded in the wet zone and the minimum increase is in the semi-arid zone. There could be an increased risk of floods in the southern and western provinces in the future, whereas areas in the eastern and southeastern districts may face severe droughts during the northeastern monsoon. It is advisable to introduce effective drought and flood management and preparedness measures to reduce the respective hazard risk levels. 2021-02-19 2021-03-15T05:04:36Z 2021-03-15T05:04:36Z Journal Article https://hdl.handle.net/10568/113001 en Open Access MDPI Alahacoon, Niranga; Edirisinghe, M. 2021. Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change. ISPRS International Journal of Geo-Information, 10(2):84. [doi: https://doi.org/10.3390/ijgi10020084] |
| spellingShingle | rainfall patterns trends climate change spatial variation weather hazards climatic zones natural disasters precipitation flooding monsoons drought arid zones semiarid zones geographical information systems Alahacoon, Niranga Edirisinghe, M. Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change |
| title | Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change |
| title_full | Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change |
| title_fullStr | Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change |
| title_full_unstemmed | Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change |
| title_short | Spatial variability of rainfall trends in Sri Lanka from 1989 to 2019 as an indication of climate change |
| title_sort | spatial variability of rainfall trends in sri lanka from 1989 to 2019 as an indication of climate change |
| topic | rainfall patterns trends climate change spatial variation weather hazards climatic zones natural disasters precipitation flooding monsoons drought arid zones semiarid zones geographical information systems |
| url | https://hdl.handle.net/10568/113001 |
| work_keys_str_mv | AT alahacoonniranga spatialvariabilityofrainfalltrendsinsrilankafrom1989to2019asanindicationofclimatechange AT edirisinghem spatialvariabilityofrainfalltrendsinsrilankafrom1989to2019asanindicationofclimatechange |