Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.6405 |
Recent rainfall trend over Sri Lanka (1987-2017) | |
Nisansala, W. D. S.1; Abeysingha, N. S.1; Islam, Adlul2; Bandara, A. M. K. R.1 | |
2019-12-09 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Sri Lanka; India |
英文摘要 | Rainfall trend analysis provides useful information for effective planning, and management of water resources, and gives an insight into climate change of a region. This study investigates trends in annual and seasonal rainfall over Sri Lanka using an Innovative Trend Analysis (ITA) and Mann-Kendall (MK) test with Sen's slope estimator. The MK test showed increasing trends in annual rainfall at 24 stations (65%) with five stations showing significant increasing trend. Annual rainfall at 13 locations (35%) showed decreasing trend, but none were significant (p < .05). ITA results for annual rainfall showed increasing trend at 67% stations while 33% stations showed decreasing trend. MK test results for seasonal rainfall indicated increasing trend at 76, 51, 32, and 86% of stations during First Inter-Monsoon (FIM), Second Inter-Monsoon (SIM), South West Monsoon (SWM), and North East Monsoon (NEM) seasons, respectively. Seasonal analysis of rainfall trend using ITA method showed increasing trend in 81, 70, 32, and 65% stations during FIM, SIM, SWM, and NEM, respectively. ITA and MK tests exhibited similar trend results for 80% of the stations. Moreover, Spearman's rho correlation coefficient between ITA and MK test trends showed significant (p < .05) positive correlation. In general, eastern, south eastern, north and north central regions of the country showed increasing rainfall trend over the last 31 years (1987-2017) while western, part of north western and central part of the country indicated a decreasing rainfall trend during the same period. |
英文关键词 | Innovative Trend Analysis Mann-Kendall test rainfall Sri Lanka |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000501463200001 |
WOS关键词 | NINO-SOUTHERN OSCILLATION ; MANN-KENDALL ; RIVER ; TIME |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225507 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Rajarata Univ Sri Lanka, Fac Agr, Dept Agr Engn & Soil Sci, Anuradhapura, Sri Lanka; 2.Indian Council Agr Res, Nat Resource Management Div, New Delhi, India |
推荐引用方式 GB/T 7714 | Nisansala, W. D. S.,Abeysingha, N. S.,Islam, Adlul,et al. Recent rainfall trend over Sri Lanka (1987-2017)[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019. |
APA | Nisansala, W. D. S.,Abeysingha, N. S.,Islam, Adlul,&Bandara, A. M. K. R..(2019).Recent rainfall trend over Sri Lanka (1987-2017).INTERNATIONAL JOURNAL OF CLIMATOLOGY. |
MLA | Nisansala, W. D. S.,et al."Recent rainfall trend over Sri Lanka (1987-2017)".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019). |
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