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Discrete wavelet transform-based investigation into the variability of standardized precipitation index in Northwest China during 1960-2014
Yang, Peng1,2; Xia, Jun1,3; Zhan, Chesheng1; Zhang, Yongyong1; Hu, Sheng1,2
2018-04-01
Source PublicationTHEORETICAL AND APPLIED CLIMATOLOGY
ISSN0177-798X
Volume132Issue:1-2Pages:167-180
Corresponding AuthorXia, Jun(xiaj@igsnrr.ac.cn)
AbstractIn this study, the temporal variations of the standard precipitation index (SPI) were analyzed at different scales in Northwest China (NWC). Discrete wavelet transform (DWT) was used in conjunction with the Mann-Kendall (MK) test in this study. This study also investigated the relationships between original precipitation and different periodic components of SPI series with datasets spanning 55 years (1960-2014). The results showed that with the exception of the annual and summer SPI in the Inner Mongolia Inland Rivers Basin (IMIRB), spring SPI in the Qinghai Lake Rivers Basin (QLRB), and spring SPI in the Central Asia Rivers Basin (CARB), it had an increasing trend in other regions for other time series. In the spring, summer, and autumn series, though the MK trends test in most areas was at the insignificant level, they showed an increasing trend in precipitation. Meanwhile, the SPI series in most subbasins of NWC displayed a turning point in 1980-1990, with the significant increasing levels after 2000. Additionally, there was a significant difference between the trend of the original SPI series and the largest approximations. The annual and seasonal SPI series were composed of the short periodicities, which were less than a decade. The MK value would increase by adding the multiple D components (and approximations), and the MK value of the combined series was in harmony with that of the original series. Additionally, the major trend of the annual SPI in NWC was based on the four kinds of climate indices (e.g., Atlantic Oscillation [AO], North Atlantic Oscillation [NAO], Pacific Decadal Oscillation [PDO], and El Nino-Southern Oscillation index [ENSO/NINO]), especially the ENSO.
KeywordStandardized Precipitation Index Trend analysis Discrete wavelet transforms Northwest China
DOI10.1007/s00704-017-2063-3
WOS KeywordHUAI RIVER-BASIN ; ARID REGION ; TEMPERATURE TRENDS ; DROUGHT ; EXTREMES ; INDIA ; RAINFALL ; PROVINCE ; MODELS ; AREA
Indexed BySCI
Language英语
Funding ProjectNational Basic Research Program of China (973 Program)[2012CB956204] ; National Natural Science Foundation of China[NSFC: 41571019] ; National Natural Science Foundation of China[41371043]
Funding OrganizationNational Basic Research Program of China (973 Program) ; National Natural Science Foundation of China
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000428241200013
PublisherSPRINGER WIEN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57247
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXia, Jun
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430000, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Yang, Peng,Xia, Jun,Zhan, Chesheng,et al. Discrete wavelet transform-based investigation into the variability of standardized precipitation index in Northwest China during 1960-2014[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2018,132(1-2):167-180.
APA Yang, Peng,Xia, Jun,Zhan, Chesheng,Zhang, Yongyong,&Hu, Sheng.(2018).Discrete wavelet transform-based investigation into the variability of standardized precipitation index in Northwest China during 1960-2014.THEORETICAL AND APPLIED CLIMATOLOGY,132(1-2),167-180.
MLA Yang, Peng,et al."Discrete wavelet transform-based investigation into the variability of standardized precipitation index in Northwest China during 1960-2014".THEORETICAL AND APPLIED CLIMATOLOGY 132.1-2(2018):167-180.
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