Influence of SST‐Precipitation Relationship Over the Equatorial Western Pacific on Simulation of the Madden‐Julian Oscillation

Chen, Guiwan; Ling, Jian; Xiao, Ziniu; Li, Chongyin; Zhang, Chidong

doi:10.1029/2024GL110485

i

Influence of SST‐Precipitation Relationship Over the Equatorial Western Pacific on Simulation of the Madden‐Julian Oscillation

2024
By Chen, Guiwan ; Ling, Jian ; Xiao, Ziniu ; ...
Series: PMEL contribution no. 5635

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Chen, Guiwan ; Ling, Jian ; Xiao, Ziniu ; Li, Chongyin ; Zhang, Chidong
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory)
Description:

Capabilities of 43 models of the Coupled Model Intercomparison Project Phase 6 (CMIP6) to simulate the Madden‐Julian Oscillation (MJO) were compared in this study. Models with higher MJO simulation skills reproduce organized large‐scale convection more frequently over the equatorial western Pacific (EWP), suggesting that MJO simulations are tightly connected to organization of large‐scale precipitation over the EWP. MJO simulation skills are not significantly correlated with the mean sea surface temperature (SST) over the EWP, but tightly connected to SST threshold for convection there. The top simulations exhibit lower SST threshold and more realistic SST‐precipitation relationship over the EWP, suggesting that convection can be organized more efficiently and intensified more rapidly with the increasing SST in these simulations. Our results emphasize that reproducing the relationship between SST and large‐scale precipitation over the EWP is critical to MJO simulations.
Source:

Geophysical Research Letters, 51(21)
Series:

PMEL contribution no. 5635
DOI:

https://doi.org/10.1029/2024GL110485
ISSN:

0094-8276 ; 1944-8007
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by-nc-nd/4.0/
Rights Information:

CC BY-NC-ND
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:e67284dc476fc35ce2ce77f66946c992a68716f775849d5fdbd4e32e8f9e19fe0b540dd90c56ee922419d3a6da49f5f5415cbf30d1063a0b132d7cfdb37dc68e
Download URL:

https://repository.library.noaa.gov/view/noaa/67433/noaa_67433_DS1.pdf
File Type:

[PDF - 4.18 MB ]

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