NDLI: Visual Analysis Using Biplot Techniques of Rainfall Changes over Turkey

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Visual Analysis Using Biplot Techniques of Rainfall Changes over Turkey

Content Provider	Springer Nature Link
Author	Alkan, B. Baris Atakan, Cemal Akdi, Yilmaz
Copyright Year	2014
Abstract	The variability in the averages of the monthly rainfall in Turkey’s seven different climate regions was examined using a principal component analysis (PCA) biplot and a canonical variate analysis (CVA) biplot to analyse meteorological data from 81 stations in the country over a period of January 1970–December 2010. Using biplots as visuals for analysing meteorological data is extremely helpful for finding hidden information in the data structures. A PCA biplot was used to examine the multi-dimensional variation and the relationships among the variables, and a CVA biplot was used to study the separation and overlap between different climate regions. The Aegean region, Mediterranean region and Marmara region with similar amounts of rainfall in January, December and May were identified in this study. Marmara and Eastern Anatolian regions are opposite to each other in terms of rainfall amount in all months except June and February. Moreover, the inverse relationships between the biplot axes in CVA biplot and PCA biplot for February and June indicate a strong negative corelation, separating the regions into two distinct groups corresponding to summer rainfall and winter rainfall respectively. The results of this study suggest that PCA and CVA biplots can be a useful graphical method for rainfall monitoring, water management and examination of meteorological data. Rainfall is the primary source for the continuation of life on Earth. Therefore, this paper demonstrates some useful empirical results as well as the advantages of using biplot techniques.
Starting Page	25
Ending Page	30
Page Count	6
File Format	PDF
ISSN	09703950
Journal	MAPAN
Volume Number	30
Issue Number	1
e-ISSN	09749853
Language	English
Publisher	Springer India
Publisher Date	2014-10-17
Publisher Institution	Metrology Society of India
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rainfall Biplot Principal component analysis Canonical variate analysis Measurement Science and Instrumentation Theoretical, Mathematical and Computational Physics Mathematical Methods in Physics Numerical and Computational Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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