Intraseasonal variability of the West African monsoon

S Janicot; G Caniaux; G De Coetlogon; B Fontaine; N Hall; G Kiladis; J-P Lafore; C Lavaysse; SL Lavender; S Leroux; R Marteau; F Mounier; N Philippon; R Roehrig; B Sultan; CM Taylor

doi:10.1002/asl.280

Intraseasonal variability of the West African monsoon

S Janicot, G Caniaux, G De Coetlogon, B Fontaine, N Hall, G Kiladis, J-P Lafore, C Lavaysse, SL Lavender, S Leroux, R Marteau, F Mounier, N Philippon, R Roehrig, B Sultan, CM Taylor

School of Environmental Sciences

Research output: Contribution to journal › Article › peer-review

89 Citations (Scopus)

Abstract

The intraseasonal time scale is critical in West Africa where resources are highly rainfall dependent. Three main modes of variability have been identified, two with a mean periodicity of 15 days and one with a mean periodicity around 40 days. These modes have a regional scale and can strongly influence precipitation and convective activity. They are mainly controlled by atmospheric dynamics and land–surface interactions. They can also modulate the very specific phase of the African summer monsoon onset. A better knowledge of the mechanisms controlling this scale is necessary to improve its predictability.

Original language	English
Pages (from-to)	58-66
Number of pages	9
Journal	Atmospheric Science Letters
Volume	12
Issue number	1
DOIs	https://doi.org/10.1002/asl.280
Publication status	Published - 2011

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10.1002/asl.280

Cite this

@article{38858fe07c474087932c845b6a38d037,

title = "Intraseasonal variability of the West African monsoon",

abstract = "The intraseasonal time scale is critical in West Africa where resources are highly rainfall dependent. Three main modes of variability have been identified, two with a mean periodicity of 15 days and one with a mean periodicity around 40 days. These modes have a regional scale and can strongly influence precipitation and convective activity. They are mainly controlled by atmospheric dynamics and land–surface interactions. They can also modulate the very specific phase of the African summer monsoon onset. A better knowledge of the mechanisms controlling this scale is necessary to improve its predictability.",

author = "S Janicot and G Caniaux and {De Coetlogon}, G and B Fontaine and N Hall and G Kiladis and J-P Lafore and C Lavaysse and SL Lavender and S Leroux and R Marteau and F Mounier and N Philippon and R Roehrig and B Sultan and CM Taylor",

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doi = "10.1002/asl.280",

language = "English",

volume = "12",

pages = "58--66",

journal = "Atmospheric Science Letters",

issn = "1530-261X",

publisher = "Wiley",

number = "1",

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Intraseasonal variability of the West African monsoon. / Janicot, S; Caniaux, G; De Coetlogon, G; Fontaine, B; Hall, N; Kiladis, G; Lafore, J-P; Lavaysse, C; Lavender, SL; Leroux, S; Marteau, R; Mounier, F; Philippon, N; Roehrig, R; Sultan, B; Taylor, CM.

In: Atmospheric Science Letters, Vol. 12, No. 1, 2011, p. 58-66.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Intraseasonal variability of the West African monsoon

AU - Janicot, S

AU - Caniaux, G

AU - De Coetlogon, G

AU - Fontaine, B

AU - Hall, N

AU - Kiladis, G

AU - Lafore, J-P

AU - Lavaysse, C

AU - Lavender, SL

AU - Leroux, S

AU - Marteau, R

AU - Mounier, F

AU - Philippon, N

AU - Roehrig, R

AU - Sultan, B

AU - Taylor, CM

PY - 2011

Y1 - 2011

N2 - The intraseasonal time scale is critical in West Africa where resources are highly rainfall dependent. Three main modes of variability have been identified, two with a mean periodicity of 15 days and one with a mean periodicity around 40 days. These modes have a regional scale and can strongly influence precipitation and convective activity. They are mainly controlled by atmospheric dynamics and land–surface interactions. They can also modulate the very specific phase of the African summer monsoon onset. A better knowledge of the mechanisms controlling this scale is necessary to improve its predictability.

AB - The intraseasonal time scale is critical in West Africa where resources are highly rainfall dependent. Three main modes of variability have been identified, two with a mean periodicity of 15 days and one with a mean periodicity around 40 days. These modes have a regional scale and can strongly influence precipitation and convective activity. They are mainly controlled by atmospheric dynamics and land–surface interactions. They can also modulate the very specific phase of the African summer monsoon onset. A better knowledge of the mechanisms controlling this scale is necessary to improve its predictability.

U2 - 10.1002/asl.280

DO - 10.1002/asl.280

M3 - Article

VL - 12

SP - 58

EP - 66

JO - Atmospheric Science Letters

JF - Atmospheric Science Letters

SN - 1530-261X

IS - 1

ER -