Examining trends in temperature and precipitation mean/extremes over Gandaki Province, Nepal
Despite the increased frequency of extreme climate events including their significance in Nepal's socio-economy, climate studies have seldom considered extremes, and even fewer have considered them in combination with temperature and precipitation. This study aimed at examining the trend of cli...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-07-01
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| Series: | Journal of Water and Climate Change |
| Subjects: | |
| Online Access: | http://jwcc.iwaponline.com/content/14/7/2342 |
| _version_ | 1797202758410960896 |
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| author | Adarsha Pratap Adhikari Ajay Bhakta Mathema |
| author_facet | Adarsha Pratap Adhikari Ajay Bhakta Mathema |
| author_sort | Adarsha Pratap Adhikari |
| collection | DOAJ |
| description | Despite the increased frequency of extreme climate events including their significance in Nepal's socio-economy, climate studies have seldom considered extremes, and even fewer have considered them in combination with temperature and precipitation. This study aimed at examining the trend of climate variables in Gandaki Province, Nepal. Daily temperature and precipitation data of five stations between 1990 and 2020 were analyzed. Modified Mann–Kendall and Sen's slope methods were used to detect trend and magnitude. The Mann–Whitney–Pettitt test was used to detect abrupt changes, and the Pearson correlation coefficient was used to find the correlation. The result showed an increasing trend and a significant abrupt change in the maximum temperature for all stations. A decreasing trend in the minimum temperature was observed in the Himalayas and the Hill region, whereas an increasing trend was seen in Siwalik and Terai regions. The Jomsom station, however, behaved differently by showing an increasing trend in precipitation and the number of rainy days. The majority of the temperature indices showed an increasing trend unlike precipitation indices, which showed a mixed result. The maximum five-day precipitation and consecutive dry days showed a significant positive correlation with altitude. The results indicate an increase in the frequency and intensity of extreme climate conditions in Gandaki Province.
HIGHLIGHTS
The paper analyzes the trend in the mean and the extreme value of temperature and precipitation.;
High altitude region could experience an extreme climate condition with frequent heavy rainfall and drought periods, while Siwalik and Terai regions could experience frequent drought periods.;
The results will help the relevant stakeholders to understand the change happening in the Gandaki Province.; |
| first_indexed | 2024-03-12T15:24:53Z |
| format | Article |
| id | doaj.art-9aa042dd5a9e421fabbe1493cd74b2fc |
| institution | Directory Open Access Journal |
| issn | 2040-2244 2408-9354 |
| language | English |
| last_indexed | 2024-04-24T08:08:32Z |
| publishDate | 2023-07-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water and Climate Change |
| spelling | doaj.art-9aa042dd5a9e421fabbe1493cd74b2fc2024-04-17T08:30:29ZengIWA PublishingJournal of Water and Climate Change2040-22442408-93542023-07-011472342236110.2166/wcc.2023.066066Examining trends in temperature and precipitation mean/extremes over Gandaki Province, NepalAdarsha Pratap Adhikari0Ajay Bhakta Mathema1 School of Environmental Science and Management, Pokhara University, Kathmandu, Nepal School of Environmental Science and Management, Pokhara University, Kathmandu, Nepal Despite the increased frequency of extreme climate events including their significance in Nepal's socio-economy, climate studies have seldom considered extremes, and even fewer have considered them in combination with temperature and precipitation. This study aimed at examining the trend of climate variables in Gandaki Province, Nepal. Daily temperature and precipitation data of five stations between 1990 and 2020 were analyzed. Modified Mann–Kendall and Sen's slope methods were used to detect trend and magnitude. The Mann–Whitney–Pettitt test was used to detect abrupt changes, and the Pearson correlation coefficient was used to find the correlation. The result showed an increasing trend and a significant abrupt change in the maximum temperature for all stations. A decreasing trend in the minimum temperature was observed in the Himalayas and the Hill region, whereas an increasing trend was seen in Siwalik and Terai regions. The Jomsom station, however, behaved differently by showing an increasing trend in precipitation and the number of rainy days. The majority of the temperature indices showed an increasing trend unlike precipitation indices, which showed a mixed result. The maximum five-day precipitation and consecutive dry days showed a significant positive correlation with altitude. The results indicate an increase in the frequency and intensity of extreme climate conditions in Gandaki Province. HIGHLIGHTS The paper analyzes the trend in the mean and the extreme value of temperature and precipitation.; High altitude region could experience an extreme climate condition with frequent heavy rainfall and drought periods, while Siwalik and Terai regions could experience frequent drought periods.; The results will help the relevant stakeholders to understand the change happening in the Gandaki Province.;http://jwcc.iwaponline.com/content/14/7/2342climate variablesextreme climate eventsgandaki provinceprecipitationtemperaturetrend |
| spellingShingle | Adarsha Pratap Adhikari Ajay Bhakta Mathema Examining trends in temperature and precipitation mean/extremes over Gandaki Province, Nepal Journal of Water and Climate Change climate variables extreme climate events gandaki province precipitation temperature trend |
| title | Examining trends in temperature and precipitation mean/extremes over Gandaki Province, Nepal |
| title_full | Examining trends in temperature and precipitation mean/extremes over Gandaki Province, Nepal |
| title_fullStr | Examining trends in temperature and precipitation mean/extremes over Gandaki Province, Nepal |
| title_full_unstemmed | Examining trends in temperature and precipitation mean/extremes over Gandaki Province, Nepal |
| title_short | Examining trends in temperature and precipitation mean/extremes over Gandaki Province, Nepal |
| title_sort | examining trends in temperature and precipitation mean extremes over gandaki province nepal |
| topic | climate variables extreme climate events gandaki province precipitation temperature trend |
| url | http://jwcc.iwaponline.com/content/14/7/2342 |
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