NDLI: Research on the relationship between rainfall and reference crop evapotranspiration with multi-time scales

Content Provider	Springer Nature Link
Author	Zhang, Jinping Ding, Zhihong Yuan, Wenlin Zuo, Qiting
Copyright Year	2012
Abstract	Limited by Fourier analysis and the selection of different wavelet base functions, the wavelet analysis method shows some deficiencies. For that reason, the empirical mode decomposition method is applied to analyze fluctuating periods and local features of annual rainfall and reference crop evapotranspiration (ET0) from 1959 to 2002. With respect to the correlation between variables, the traditional time series analysis methods often assume that data sequences are stationary which result in “spurious regression.” Therefore, the cointegration theory is introduced to describe the long-term equilibrium relationship of rainfall and ET0. At last, to understand the uncertainty between these two variables, the set pair analysis (SPA) method is used to present the identity, discrepancy, and contrary of rainfall and ET0 with multi-time scales. The results reveal that rainfall and ET0 have a complex relationship which may be related to El Nino, air–sea intersection, solar activity. Moreover, the fluctuation periods of rainfall and ET0 also have similar short and middle period level, and slightly different long period level. The changes of rainfall and ET0 present mainly the contrary and the discrepancy. This relationship will remain a long-term equilibrium.
Starting Page	473
Ending Page	482
Page Count	10
File Format	PDF
ISSN	16112490
Journal	Paddy and Water Environment
Volume Number	11
Issue Number	1-4
e-ISSN	16112504
Language	English
Publisher	Springer Japan
Publisher Date	2012-06-09
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rainfall Reference crop evapotranspiration Empirical mode decomposition Cointegration Set pair analysis Agriculture Hydrogeology Geoecology/Natural Processes Ecotoxicology Soil Science & Conservation Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology Agronomy and Crop Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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