An Observational Perspective of Sea Surface Salinity in the Southwestern Indian Ocean and Its Role in the South Asia Summer Monsoon

Yuan, Xu; Salama, Mhd. Suhyb; Su, Zhongbo

doi:10.3390/rs10121930

Cited by 10 publications

(4 citation statements)

References 43 publications

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“…The crossing depth in the SCTR has a clear annual cycle, peaking in September up to 58 m and reaching the minimum 23 m in March. This seasonal variation is very similar to the climatological SST seasonal change in the SCTR (Yuan et al 2018). The peaking time of the crossing depth in the SCTR is in good agreement with the seasonal phase locking impact of ENSO on the SCTR when the SST variability in the SCTR is affected by the subsurface variability due to ENSO induced anomalous wind stress (Burns and Subrahmanyam 2016;Nagura and Konda 2007;Shinoda et al 2004b).…”

Section: Crossing Depths: Attribution Of the Interannual Temperature supporting

confidence: 79%

Sea surface salinity and the ocean structure in the tropical Indian Ocean

Yuan¹

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This Ph.D. thesis was developed with tremendous supports and helps from numerous people, without whom the thesis could have not been completed. I would like to express my sincere gratitude to all of them for making this thesis possible. First and foremost, I would like to express my heartfelt thanks to Prof. Zhongbo Su, who offered me the opportunity as a Ph.D. candidate at the Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente. It is my great honor to be one of his students and do research under his supervision. His valuable guidance and enthusiastic encouragement helped me overcome all the difficulties and challenges in my research. His positive and creative thinking guided me through both scientific research and daily life in the Netherlands. I am also very grateful for his immense support to fund my many trips to conferences and a three-month exchange at Woods Hole Oceanographic Institute (WHOI), where I was able to broaden my views and thoughts and kept up with the developments in my research field. I would also like to express my sincere thanks to the China Scholarship Council (CSC) for financially supporting my Ph.D. study at the University of Twente. Without the support of CSC, my Ph.D. journey may not even be possible. There are many other colleagues and friends from ITC and University of Twente, who, directly or indirectly, helped and supported me during the last six years. To them, I would like to express my sincere gratitude and appreciation. Special thanks to the secretaries, J. de Koning (Anke), E.L. Butt-Castro (Tina), L.M. Snijders-Nijkrake (Lindy) and Loes Colenbrander and the Chinese staff, Yijian Zeng, Lichun Wang, and Xuelong Chen for their friendly help and concerns. To my colleagues and friends

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Section: Crossing Depths: Attribution Of the Interannual Temperature supporting

confidence: 79%

Sea surface salinity and the ocean structure in the tropical Indian Ocean

Yuan¹

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“…The South Asian Summer Monsoon (SASM) is a critical source of freshwater and its onset and intensity impacts drought and flood events in South Asia, agricultural yields, water resources, energy production, population health and the economy. Yuan et al [15] assess the relationship between the SSS anomaly (SSSA) and SASM using observational and statistical evidence. They show that a positive SSSA leads to a thinning of the barrier layer and to a decrease in SST anomaly.…”

Section: Oceanography With Space-borne Sssmentioning

confidence: 99%

Editorial for the Special Issue “Sea Surface Salinity Remote Sensing”

Dinnat

Yin²

2019

Remote Sensing

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This Special Issue gathers papers reporting research on various aspects of remote sensing of sea surface salinity (SSS) and the use of satellites SSS in oceanography. It includes contributions presenting improvements in empirical or theoretical radiative transfer models; mitigation techniques of external interference such as radio frequency interferences (RFI) and land contamination; comparisons and validation of remote sensing products with in situ observations; retrieval techniques for improved coastal SSS monitoring, high latitude SSS monitoring and assessment of ocean interactions with the cryosphere; and data fusion techniques combining SSS with sea surface temperature (SST). New instrument technology for the future of SSS remote sensing is also presented.

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“…Remote sensing of ocean color shows increased chlorophyll in the surface waters of the SLD during the SW monsoon [24]. This is mainly because the upwelling breaks the strong stratification (the existence of a barrier layer) during summer and provides more nutrients to the surface [24][25][26][27][28]. However, the Bay of Bengal Boundary Layer Experiment (BoBBLE) showed a very low nutrient concentration in the SLD via ship-bound measurements [25,29].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variability in Chlorophyll and Air-Sea CO2 Flux in the Sri Lanka Dome: Hydrodynamic Implications

Wang

Bai

et al. 2022

Remote Sensing

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Multiple upwelling systems develop in the Indian Ocean during the summer monsoon. The Sri Lanka dome (SLD), which occurs in the open ocean off the east coast of Sri Lanka from June to September, is distinct from those near the coast. The SLD is characterized by uplifted thermocline and increased chlorophyll concentration. Mechanisms of the upwelling and its biogeochemical response are not well understood. Here, we explored the dynamics of the chlorophyll and sea-to-air CO2 flux in the SLD using ocean color and altimetry remote sensing data, together with other reanalysis products. We found that the occurrence of high chlorophyll concentration and sea-to-air CO2 flux happens along the pathway of the southwest monsoon current (SMC). The annual cycle of chlorophyll in the SLD has a one-month lag relative to that in the southern coast of Sri Lanka. The positive wind stress curl that forms in the SLD during the summer does not fully explain the seasonal chlorophyll maximum. Transport of the SMC, eddy activity, and associated frontal processes also play an important role in regulating the variability in chlorophyll. In the SLD, upwelled subsurface water has excess dissolved inorganic carbon (DIC) relative to the conventional Redfield ratio between DIC and nutrients; thus, upwelling and sub-mesoscale processes determine this region to be a net carbon source to the atmosphere.

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An Observational Perspective of Sea Surface Salinity in the Southwestern Indian Ocean and Its Role in the South Asia Summer Monsoon

Cited by 10 publications

References 43 publications

Sea surface salinity and the ocean structure in the tropical Indian Ocean

Sea surface salinity and the ocean structure in the tropical Indian Ocean

Editorial for the Special Issue “Sea Surface Salinity Remote Sensing”

Seasonal Variability in Chlorophyll and Air-Sea CO2 Flux in the Sri Lanka Dome: Hydrodynamic Implications

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