A Zonal Migration of Monsoon Moisture Flux Convergence and the Strength of Madden-Julian Oscillation Events

Hagos, Samson; Zhang, Chidong; Leung, L. Ruby; Burleyson, Casey D.; Balaguru, Karthik

doi:10.1029/2019GL083468

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A Zonal Migration of Monsoon Moisture Flux Convergence and the Strength of Madden-Julian Oscillation Events

2019
By Hagos, Samson ; Zhang, Chidong ; Leung, L. Ruby ; ...
Source: Geophysical Research Letters, 46, 8554– 8562

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Journal Title:

Geophysical Research Letters
Personal Author:

Hagos, Samson ; Zhang, Chidong ; Leung, L. Ruby ; Burleyson, Casey D. ; Balaguru, Karthik

Hagos, Samson ; Zhang, Chidong ; Leung, L. Ruby ; Burleyson, Casey D. ; Balaguru, Karthik Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) ; PMEL (Pacific Marine Environmental Laboratory)

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) ; PMEL (Pacific Marine Environmental Laboratory) Less -
Description:

Understanding the variations in the strength of Madden-Julian Oscillation (Madden-Julian oscillation) events as they propagate across the Indo-Pacific Maritime Continent has been an unmet challenge. Moisture flux convergence estimated directly from precipitation shows a slow eastward migration of zonal moisture flux convergence between the Asian and Australian monsoon convergence centers from summer to winter. Strengths of individual Madden-Julian oscillation events vary as they propagate across this zonally and seasonally varying monsoonal moisture convergence. Madden-Julian oscillation events starting in February–April tend to be weak over the eastern Indian Ocean, but they strengthen as they propagate into the moisture convergence region over the western Pacific. During May–July, the moisture convergence pattern is reversed and Madden-Julian oscillation events weaken as they propagate into the moisture divergence region in the western Pacific. Winter Madden-Julian oscillation events are most likely to be strong over the Maritime Continent region, particularly when the Australian monsoon is strong.
Keywords:

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Intraseasonal Variability Madden-Julian Oscillation Maritime Continent Tropical Variability
Source:

Geophysical Research Letters, 46, 8554– 8562
DOI:

https://doi.org/10.1029/2019GL083468
Document Type:

Journal Article
Funding:

Grant no. NA17OAR4310263
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CC BY-NC-ND
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Submitted
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urn:sha256:c5e1b0ae0650e89feb77528a6552ce9d9c2fe99b2079e6884d928d59991a4c94
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https://repository.library.noaa.gov/view/noaa/32652/noaa_32652_DS1.pdf
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A Zonal Migration of Monsoon Moisture Flux Convergence and the Strength of Madden-Julian Oscillation Events

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