Authors / CoAuthors
Huang, Z. | Feng, M..
Abstract
High frequency coupling between the tropical upper ocean and atmosphere at diurnal time scales is being recognised as important for the behaviour of large scale climate modes such as Madden Julian Oscillation (MJO). Eastern Indian Ocean warm pool and Northwest shelf of Australia is strongly influenced by the MJO activities. In this study, we use the hourly Himawari-8 geostationary satellite SST data in the Northwest shelf of Australia to understand the modulation of the amplitude of SST diurnal variations with the MJO evolution during the two austral summer seasons of 2015-16 and 2016-17. The high temporal and spatial resolutions of the Himawari-8 SST data were able to capture the temporal and spatial variability of diurnal SST. This study indicates that the diurnal SST variation is a key indicator of and thus plays a fundamental role in the air-sea interactions between MJO and upper-ocean. Our results show that MJO onset (active phase) is preceded by strong diurnal SST variations in MJO suppressed phase. SST diurnal variations are modulated by wind-induced latent heat flux and solar radiation variations. The record El Nino warming event in 2015-16 may have modulated the MJO activities. In addition, we also observe notable spatial variability of diurnal variations of SST in the region, especially during the 2015-16 El Nino event. <b>Citation:</b> Z. Huang, M. Feng, MJO induced diurnal sea surface temperature variations off the northwest shelf of Australia observed from Himawari geostationary satellite, <i>Deep Sea Research Part II: Topical Studies in Oceanography</i>, Volume 183, 2021, 104925, ISSN 0967-0645, https://doi.org/10.1016/j.dsr2.2021.104925
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document
eCat Id
126583
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
- ( Product )
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- Sea surface temperature - SST
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- Madden Julian Oscillation - MJO
- ( Instrument )
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- Himawari 8
- ( Place )
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- northwest Australia
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- geostationary satellite
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- Published_External
Publication Date
2023-11-01T05:47:53
Creation Date
2019-01-24T10:00:00
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completed
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External Publication
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asNeeded
Topic Category
oceans
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Deep-Sea Research Part II Volume 183, January 2021 104925
Lineage
This paper is the result of the collaboration between GA and CSIRO represented by Dr Ming Feng. The paper is published. Citation: Huang, Z., Feng, M. 2021. MJO induced diurnal sea surface temperature variations off the northwest shelf of Australia observed from Himawari geostationary satellite, Deep-Sea Research II, 183, 104925.
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[-44.00, -9.00, 112.00, 154.00]
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