Spatial Seasonal Distribution of Climatological Precipitation over the Middle of the Indochina Peninsula
Rainfall intensity and frequency are important parameters in agricultural development and water resource management. The middle of the Indochina peninsula climate is characterized by rainfall variability associated with complex terrains. The present study focuses on spatial seasonal extreme precipi...
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| Format: | Article |
| Language: | English |
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Environmental Research Institute, Chulalongkorn University
2017-11-01
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| Series: | Applied Environmental Research |
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| Online Access: | https://ph01-ohno.tci-thaijo.org/index.php/aer/article/view/94450 |
| _version_ | 1818497156844093440 |
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| author | Nattapon Mahavik |
| author_facet | Nattapon Mahavik |
| author_sort | Nattapon Mahavik |
| collection | DOAJ |
| description |
Rainfall intensity and frequency are important parameters in agricultural development and water resource management. The middle of the Indochina peninsula climate is characterized by rainfall variability associated with complex terrains. The present study focuses on spatial seasonal extreme precipitation trends over the middle of the Indochina Peninsula for the 30 year period from 1978-2007. Daily gridded precipitation data obtained at 0.5° horizontal grid resolution from APHRODITE (Asian Precipitation-Highly Resolved Observational Data Integration Towards Evaluation of Water Resources) was used to detect the spatial trends with the use of the Man-Kendall and Theil-Sen approach. Extreme precipitation indices were selected from the WMO–CCL/CLIVAR list of extreme precipitation indices focusing on intensity and frequency. The study shows a consistently increasing upward trend at 10.04 d from the WDAY index. In seasonal analysis, the pre-monsoon trend shows a significant upward trend in the PRCTOT index, while the WDAY index for pre-monsoon season has the highest correlation coefficient in downward trend. Spatial analysis of extreme precipitation indices shows that the PRCTOT index of the pre-monsoon season has the largest percentage change in significant upward trend over the northern Basins that are consistent with MAX and Mean but not for WDAY. In addition, the inter-annual relationship between the Oceanic Nino Index and PRCTOT is shown in relation with the La Niña phase for both April and May.
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| first_indexed | 2024-12-10T18:42:08Z |
| format | Article |
| id | doaj.art-9a361d49847b434ab0c3374feb1deee2 |
| institution | Directory Open Access Journal |
| issn | 2287-0741 2287-075X |
| language | English |
| last_indexed | 2024-12-10T18:42:08Z |
| publishDate | 2017-11-01 |
| publisher | Environmental Research Institute, Chulalongkorn University |
| record_format | Article |
| series | Applied Environmental Research |
| spelling | doaj.art-9a361d49847b434ab0c3374feb1deee22022-12-22T01:37:38ZengEnvironmental Research Institute, Chulalongkorn UniversityApplied Environmental Research2287-07412287-075X2017-11-01393Spatial Seasonal Distribution of Climatological Precipitation over the Middle of the Indochina PeninsulaNattapon Mahavik0Faculty of Agriculture, Natural Resources and Environment, Naresuan University, Phitsanulok, Thailand Rainfall intensity and frequency are important parameters in agricultural development and water resource management. The middle of the Indochina peninsula climate is characterized by rainfall variability associated with complex terrains. The present study focuses on spatial seasonal extreme precipitation trends over the middle of the Indochina Peninsula for the 30 year period from 1978-2007. Daily gridded precipitation data obtained at 0.5° horizontal grid resolution from APHRODITE (Asian Precipitation-Highly Resolved Observational Data Integration Towards Evaluation of Water Resources) was used to detect the spatial trends with the use of the Man-Kendall and Theil-Sen approach. Extreme precipitation indices were selected from the WMO–CCL/CLIVAR list of extreme precipitation indices focusing on intensity and frequency. The study shows a consistently increasing upward trend at 10.04 d from the WDAY index. In seasonal analysis, the pre-monsoon trend shows a significant upward trend in the PRCTOT index, while the WDAY index for pre-monsoon season has the highest correlation coefficient in downward trend. Spatial analysis of extreme precipitation indices shows that the PRCTOT index of the pre-monsoon season has the largest percentage change in significant upward trend over the northern Basins that are consistent with MAX and Mean but not for WDAY. In addition, the inter-annual relationship between the Oceanic Nino Index and PRCTOT is shown in relation with the La Niña phase for both April and May. https://ph01-ohno.tci-thaijo.org/index.php/aer/article/view/94450Seasonal variabilityExtreme precipitationIndochina PeninsulaAPHRODITE |
| spellingShingle | Nattapon Mahavik Spatial Seasonal Distribution of Climatological Precipitation over the Middle of the Indochina Peninsula Applied Environmental Research Seasonal variability Extreme precipitation Indochina Peninsula APHRODITE |
| title | Spatial Seasonal Distribution of Climatological Precipitation over the Middle of the Indochina Peninsula |
| title_full | Spatial Seasonal Distribution of Climatological Precipitation over the Middle of the Indochina Peninsula |
| title_fullStr | Spatial Seasonal Distribution of Climatological Precipitation over the Middle of the Indochina Peninsula |
| title_full_unstemmed | Spatial Seasonal Distribution of Climatological Precipitation over the Middle of the Indochina Peninsula |
| title_short | Spatial Seasonal Distribution of Climatological Precipitation over the Middle of the Indochina Peninsula |
| title_sort | spatial seasonal distribution of climatological precipitation over the middle of the indochina peninsula |
| topic | Seasonal variability Extreme precipitation Indochina Peninsula APHRODITE |
| url | https://ph01-ohno.tci-thaijo.org/index.php/aer/article/view/94450 |
| work_keys_str_mv | AT nattaponmahavik spatialseasonaldistributionofclimatologicalprecipitationoverthemiddleoftheindochinapeninsula |