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Title: :  INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR
PaperId: :  22640
Published in:   International Journal Of Advance Research And Innovative Ideas In Education
Publisher:   IJARIIE
e-ISSN:   2395-4396
Volume/Issue:    Volume 10 Issue 2 2024
DUI:    16.0415/IJARIIE-22640
Licence: :   IJARIIE is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Author NameAuthor Institute
RANDRIANARIVELO Eddy FlocaudelDoctoral School of Life Engineering and Modeling
HANTA Tina OlgaDoctoral School of Life Engineering and Modeling
JAKELY VertuDoctoral School of Life Engineering and Modeling
RANDRIANANDRASANARIVO Raphaëlson JaquesDoctoral School of Life Engineering and Modeling
JOHANESA FernandDoctoral School of Life Engineering and Modeling
HARY JeanHigher Institute of Science and Technology of Mahajanga
MAXWELL DjaffardHigher Institute of Science and Technology of Mahajanga

Abstract

climatology
Precipitation, SPI, Anomalous accumulation, ENSO, Self-Organizing Map
This article is based on an analysis of precipitation according to ENSO phenomenon. Self-organizing maps, associated with hierarchical ascending classification, are methods for subdividing our study area. The calculation of the standardized precipitation index is applied to our rainfall data. The anomalous accumulation is used to determine the start dates and end dates of the season. The aim is to characterize the spatio-temporal variability of rainfall in the north-western part of Madagascar. Then, detect during which ENSO phases most often occur the precipitation anomalies (state of humidity or drought) and also the length of the longest or shortest season. The study area is located between longitudes 43°E to 48.5°E and latitudes between 12°S to 18°S. It is subdivided into 3 sub-zones. The daily precipitation data used are available on the ECMWF website for a period of 42 years (1979 to 2020). They correspond to the sum of large-scale precipitation and convective precipitation. Our study area is grouped into three different sub-areas. The maximum amount of precipitation during the La Nina phase does not differ significantly from that observed during the El Niño phase. However, the El Niño episode has more influence on annual precipitation in our study region. In subzone 2, extreme humidity occurred during this phase. Furthermore, the amounts of annual precipitation during the El Niño phase are almost greater than those in La Nina years. On the other hand, the neutral phase often evokes a state of precipitation close to normal. In subzones 1 and 3, the length of the season curiously tends to lengthen during the El Niño phase.

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IJARIIE RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, and MAXWELL Djaffard. "INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR" International Journal Of Advance Research And Innovative Ideas In Education Volume 10 Issue 2 2024 Page 132-143
MLA RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, and MAXWELL Djaffard. "INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR." International Journal Of Advance Research And Innovative Ideas In Education 10.2(2024) : 132-143.
APA RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, & MAXWELL Djaffard. (2024). INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR. International Journal Of Advance Research And Innovative Ideas In Education, 10(2), 132-143.
Chicago RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, and MAXWELL Djaffard. "INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR." International Journal Of Advance Research And Innovative Ideas In Education 10, no. 2 (2024) : 132-143.
Oxford RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, and MAXWELL Djaffard. 'INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR', International Journal Of Advance Research And Innovative Ideas In Education, vol. 10, no. 2, 2024, p. 132-143. Available from IJARIIE, https://ijariie.com/AdminUploadPdf/INFLUENCE_OF_THE_ENSO_PHENOMENON_ON_PRECIPITATION_IN_THE_NORTH_WESTERN_PART_OF_MADAGASCAR_ijariie22640.pdf (Accessed : 20 November 2024).
Harvard RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, and MAXWELL Djaffard. (2024) 'INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR', International Journal Of Advance Research And Innovative Ideas In Education, 10(2), pp. 132-143IJARIIE [Online]. Available at: https://ijariie.com/AdminUploadPdf/INFLUENCE_OF_THE_ENSO_PHENOMENON_ON_PRECIPITATION_IN_THE_NORTH_WESTERN_PART_OF_MADAGASCAR_ijariie22640.pdf (Accessed : 20 November 2024)
IEEE RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, and MAXWELL Djaffard, "INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR," International Journal Of Advance Research And Innovative Ideas In Education, vol. 10, no. 2, pp. 132-143, Mar-App 2024. [Online]. Available: https://ijariie.com/AdminUploadPdf/INFLUENCE_OF_THE_ENSO_PHENOMENON_ON_PRECIPITATION_IN_THE_NORTH_WESTERN_PART_OF_MADAGASCAR_ijariie22640.pdf [Accessed : 20 November 2024].
Turabian RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, and MAXWELL Djaffard. "INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR." International Journal Of Advance Research And Innovative Ideas In Education [Online]. volume 10 number 2 (20 November 2024).
Vancouver RANDRIANARIVELO Eddy Flocaudel, HANTA Tina Olga, JAKELY Vertu, RANDRIANANDRASANARIVO Raphaëlson Jaques, JOHANESA Fernand, HARY Jean, and MAXWELL Djaffard. INFLUENCE OF THE ENSO PHENOMENON ON PRECIPITATION IN THE NORTH-WESTERN PART OF MADAGASCAR. International Journal Of Advance Research And Innovative Ideas In Education [Internet]. 2024 [Cited : 20 November 2024]; 10(2) : 132-143. Available from: https://ijariie.com/AdminUploadPdf/INFLUENCE_OF_THE_ENSO_PHENOMENON_ON_PRECIPITATION_IN_THE_NORTH_WESTERN_PART_OF_MADAGASCAR_ijariie22640.pdf
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