Arid
DOI10.20937/ATM.2018.31.03.06
Absolute homogeneity assessment of precipitation time series in an arid region of Pakistan
Ahmed, Kamal1,2; Shahid, Shamsuddin1; Ismail, Tarmizi1; Nawaz, Nadeem2; Wang, Xiao-Jun3,4
通讯作者Ahmed, Kamal
来源期刊ATMOSFERA
ISSN0187-6236
出版年2018
卷号31期号:3页码:301-316
英文摘要

Homogeneity evaluations are usually performed on the total annual precipitation data, which often fails to detect non-homogeneity in seasonal precipitation. Furthermore, it is required to assess homogeneity using multiple methods as the performance of homogeneity testing methods depend on the distribution of the data. This is particularly important for the arid region where distributions of seasonal and annual rainfall are often non-normal. The homogeneity of annual and monthly precipitation datasets of 14 meteorological stations located in the arid region of Pakistan was assessed in this study using the Pettitt’s test, the standard normal homogeneity test (SNHT), the cumulative deviation test. the von Neumann’s ratio test, the Bayesian test. the Worsley’s likelihood ratio test, and Student’s t-test at a 95% confidence level. The rainfall series were categorized into three classes, namely "useful", "doubtful" and "suspect" based on the results of different homogeneity tests. Results suggest that rainfall time series for most of the months in all the stations are useful. The rainfall time series are found doubtful for the month of June at two stations, for April at one station, and suspect for November at only one station. On the other hand, the annual series were found useful at 12 stations and suspect at two stations. Comparison of different homogeneity tests revealed that SNHT and Worsley’s tests are the most sensitive, and cumulative deviation test is the least sensitive to changes in monthly precipitation data. In the case of annual series, the von Neumann’s test was found most sensitive compared to other tests.


英文关键词Absolute homogeneity precipitation hypothesis test arid region Balochistan
类型Article
语种英语
国家Malaysia ; Pakistan ; Peoples R China
收录类别SCI-E
WOS记录号WOS:000439990500006
WOS关键词TEMPERATURE DATA ; CLIMATE DATA ; DATA SET ; HOMOGENIZATION ; TRENDS ; RATIO ; INHOMOGENEITIES ; VARIABILITY ; PORTUGAL
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/207856
作者单位1.Univ Teknol Malaysia, Fac Civil Engn, Johor Baharu 81310, Malaysia;
2.Lasbela Univ Agr Water & Marine Sci, Fac Water Resource Management, Uthal, Balochistan, Pakistan;
3.Nanjing Hydraul Res Inst, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210029, Jiangsu, Peoples R China;
4.Minist Water Resources, Res Ctr Climate Change, Nanjing 210029, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714
Ahmed, Kamal,Shahid, Shamsuddin,Ismail, Tarmizi,et al. Absolute homogeneity assessment of precipitation time series in an arid region of Pakistan[J],2018,31(3):301-316.
APA Ahmed, Kamal,Shahid, Shamsuddin,Ismail, Tarmizi,Nawaz, Nadeem,&Wang, Xiao-Jun.(2018).Absolute homogeneity assessment of precipitation time series in an arid region of Pakistan.ATMOSFERA,31(3),301-316.
MLA Ahmed, Kamal,et al."Absolute homogeneity assessment of precipitation time series in an arid region of Pakistan".ATMOSFERA 31.3(2018):301-316.
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