Intraseasonal Surface Salinity Variability and the MJO in a Climate Model

Zhu, Jieshun; Kumar, Arun; Wang, Wanqiu

doi:10.1029/2020GL088997

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i

Intraseasonal Surface Salinity Variability and the MJO in a Climate Model

2020
By Zhu, Jieshun ; Kumar, Arun ; Wang, Wanqiu
Source: Geophysical Research Letters,47,e2020GL088997.

[PDF-4.27 MB]

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Zhu, Jieshun ; Kumar, Arun ; Wang, Wanqiu

Zhu, Jieshun ; Kumar, Arun ; Wang, Wanqiu Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) ; NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction)

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) ; NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction) Less -
Description:

Due to the sparsity of ocean observations, understanding inconsistencies exist even in qualitative respect about the mechanisms of intraseasonal sea surface salinity (SSS) over the Indo-Pacific basin. In this study, a quantitative diagnostic of salinity/freshwater budgets related to the Madden-Julian oscillation (MJO) was conducted based on model simulations. The model applied is a modified version of the NCEP Climate Forecast System, version 2. The application of a coupled model other than ocean-only models is one of the unique aspects of this study. The model modifications resulted in a more realistic MJO simulation and a better simulation of intraseasonal SSS variability as validated against the Aquarius estimates. The mechanisms of the MJO-related SSS variability are further explored by conducting a salinity budget analysis over the mixed layer. The analysis indicates a strong spatial variation of dominant physical processes controlling the local SSS variability. For example, while the role of surface fluxes dominates in the western Indian basin, oceanic advection plays an important role in the eastern Indian and western Pacific oceans.
Keywords:

[+]

Analysis Barrier-layer Budget Climate Convection Diurnal Cycle Forecast Geology Intraseasonal Madden-julian Oscillation Mixed-layer MJO Model Predictability Salinity Temperature Tropical Western Pacific
Source:

Geophysical Research Letters,47,e2020GL088997.
DOI:

https://doi.org/10.1029/2020GL088997
Document Type:

Journal Article
Place as Subject:

Western Pacific ; Indian Ocean

Western Pacific ; Indian Ocean Less -
Rights Information:

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Submitted
Main Document Checksum:

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urn:sha256:cd00f0b52999eaef0d1af0412fa102435aa44e17cad21ded8b9677c86e0e6ef3
Download URL:

https://repository.library.noaa.gov/view/noaa/28694/noaa_28694_DS1.pdf
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	Supplemental media, text	docx
	Supplemental media, text	docx

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