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Technical Note

Effect of Argo Salinity Drift since 2016 on the Estimation of Regional Steric Sea Level Change Rates

1
Institute of Geophysics, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
2
National Precise Gravity Measurement Facility (PGMF), Huazhong University of Science and Technology, Wuhan 430074, China
3
Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
4
School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Remote Sens. 2024, 16(11), 1855; https://doi.org/10.3390/rs16111855
Submission received: 9 March 2024 / Revised: 19 April 2024 / Accepted: 21 May 2024 / Published: 23 May 2024
(This article belongs to the Special Issue Applications of Satellite Geodesy for Sea-Level Change Observation)

Abstract

Since 2016, the Argo (Array for Real-Time Geostrophic Oceanography) ocean salinity data has exhibited significant drift, directly affecting the accurate quantification of the global steric sea level (SSL) rates. To further investigate how salinity drift affects the estimation of SSL rates in different depths and regions, we divide the 0–2000 m into three layers (0–300 m, 300–1000 m and 1000–2000 m) and select five open oceans (the South and North Pacific, the South and North Atlantic, and the Indian Ocean) for discussion. By comparing the SSL rates between the periods of 2005–2015 and 2005–2019, we can evaluate the impact of salinity drift. Taking the estimated results from the IPRC (provided by the International Pacific Research Center at the University of Hawaii) and BOA (provided by the Second Institute of Oceanography, China) data as examples, we find that the effect of salinity drift is the largest at the depth of 1000–2000 m, about 29% for IPRC data and about 18% for BOA data. Moreover, the South Atlantic is susceptible to the effects of salinity drift, with an approximately 13% impact for IPRC data and 21% for BOA data.
Keywords: ocean salinity drift; steric sea level rate; different depths; different open oceans ocean salinity drift; steric sea level rate; different depths; different open oceans
Graphical Abstract

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MDPI and ACS Style

Tang, L.; Zhou, H.; Li, J.; Wang, P.; Su, X.; Luo, Z. Effect of Argo Salinity Drift since 2016 on the Estimation of Regional Steric Sea Level Change Rates. Remote Sens. 2024, 16, 1855. https://doi.org/10.3390/rs16111855

AMA Style

Tang L, Zhou H, Li J, Wang P, Su X, Luo Z. Effect of Argo Salinity Drift since 2016 on the Estimation of Regional Steric Sea Level Change Rates. Remote Sensing. 2024; 16(11):1855. https://doi.org/10.3390/rs16111855

Chicago/Turabian Style

Tang, Lu, Hao Zhou, Jin Li, Penghui Wang, Xiaoli Su, and Zhicai Luo. 2024. "Effect of Argo Salinity Drift since 2016 on the Estimation of Regional Steric Sea Level Change Rates" Remote Sensing 16, no. 11: 1855. https://doi.org/10.3390/rs16111855

APA Style

Tang, L., Zhou, H., Li, J., Wang, P., Su, X., & Luo, Z. (2024). Effect of Argo Salinity Drift since 2016 on the Estimation of Regional Steric Sea Level Change Rates. Remote Sensing, 16(11), 1855. https://doi.org/10.3390/rs16111855

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