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Title: :  SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR
PaperId: :  11523
Published in:   International Journal Of Advance Research And Innovative Ideas In Education
Publisher:   IJARIIE
e-ISSN:   2395-4396
Volume/Issue:    Volume 6 Issue 2 2020
DUI:    16.0415/IJARIIE-11523
Licence: :   IJARIIE is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Author NameAuthor Institute
Harimino Andriamalala RAJAONARISOADynamic laboratory of Atmosphere, Climate and Oceans (DyACO), Physics and Applications, Sciences and Technologies Domain, University of Antananarivo, Madagascar
Irrish Parker RAMAHAZOSOAlaboratory of Atmosphere, Climate and Oceans (DyACO), Physics and Applications, Sciences and Technologies Domain, University of Antananarivo, Madagascar
Adolphe Andriamanga RATIARISONDynamic laboratory of Atmosphere, Climate and Oceans (DyACO), Physics and Applications, Sciences and Technologies Domain, University of Antananarivo, Madagascar

Abstract

Climatology and Weather
Principal Component Analysis, Fuzzy C-Means, K-Means, Precipitation, t-sne, Variability.
This research aims to analyze the spatial and temporal variability of precipitation in Southern of Madagascar. Precipitation data is reanalysis data in grid points (54 points), between January 01st, 1979 and December 31st, 2017. Various technics are used to characterize this variability. The Principal Component Analysis method makes it possible to represent individuals in the factorial plan. The first factor axis corresponds to precipitation and the second to the seasons of the year (winter and Southern summer). Then, the individuals are grouped according to the signs of their coordinates on the factorial plan. As a result, we get a subdivision into four zones: a zone of weak precipitation in Southern winter, a zone of weak precipitation in Southern summer, a zone of heavy precipitation in Southern winter and a zone of heavy precipitation in Southern summer. To optimize the regionalization, the representation on the factorial plan is combined with the K-Means and Fuzzy C-Means clustering methods. Then, another representation on the t-sne plan with perplexity parameter 5 also followed by the two previous clustering methods. All classifications are evaluated by Dunn's index. The best classifications are those of t-sne representation combined with the Fuzzy C-Means or K-Means clustering method. The final result of the spatial and temporal variability analysis of precipitation shows an East-West gradient of precipitation whether in summer or in Southern winter.

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IJARIIE Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, and Adolphe Andriamanga RATIARISON. "SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR" International Journal Of Advance Research And Innovative Ideas In Education Volume 6 Issue 2 2020 Page 325-338
MLA Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, and Adolphe Andriamanga RATIARISON. "SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR." International Journal Of Advance Research And Innovative Ideas In Education 6.2(2020) : 325-338.
APA Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, & Adolphe Andriamanga RATIARISON. (2020). SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR. International Journal Of Advance Research And Innovative Ideas In Education, 6(2), 325-338.
Chicago Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, and Adolphe Andriamanga RATIARISON. "SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR." International Journal Of Advance Research And Innovative Ideas In Education 6, no. 2 (2020) : 325-338.
Oxford Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, and Adolphe Andriamanga RATIARISON. 'SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR', International Journal Of Advance Research And Innovative Ideas In Education, vol. 6, no. 2, 2020, p. 325-338. Available from IJARIIE, http://ijariie.com/AdminUploadPdf/SPATIAL_AND_TEMPORAL_VARIABILITY_OF_PRECIPITATION_IN_SOUTHERN_OF_MADAGASCAR_ijariie11523.pdf (Accessed : 10 October 2024).
Harvard Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, and Adolphe Andriamanga RATIARISON. (2020) 'SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR', International Journal Of Advance Research And Innovative Ideas In Education, 6(2), pp. 325-338IJARIIE [Online]. Available at: http://ijariie.com/AdminUploadPdf/SPATIAL_AND_TEMPORAL_VARIABILITY_OF_PRECIPITATION_IN_SOUTHERN_OF_MADAGASCAR_ijariie11523.pdf (Accessed : 10 October 2024)
IEEE Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, and Adolphe Andriamanga RATIARISON, "SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR," International Journal Of Advance Research And Innovative Ideas In Education, vol. 6, no. 2, pp. 325-338, Mar-App 2020. [Online]. Available: http://ijariie.com/AdminUploadPdf/SPATIAL_AND_TEMPORAL_VARIABILITY_OF_PRECIPITATION_IN_SOUTHERN_OF_MADAGASCAR_ijariie11523.pdf [Accessed : 10 October 2024].
Turabian Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, and Adolphe Andriamanga RATIARISON. "SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR." International Journal Of Advance Research And Innovative Ideas In Education [Online]. volume 6 number 2 (10 October 2024).
Vancouver Harimino Andriamalala RAJAONARISOA, Irrish Parker RAMAHAZOSOA, and Adolphe Andriamanga RATIARISON. SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION IN SOUTHERN OF MADAGASCAR. International Journal Of Advance Research And Innovative Ideas In Education [Internet]. 2020 [Cited : 10 October 2024]; 6(2) : 325-338. Available from: http://ijariie.com/AdminUploadPdf/SPATIAL_AND_TEMPORAL_VARIABILITY_OF_PRECIPITATION_IN_SOUTHERN_OF_MADAGASCAR_ijariie11523.pdf
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