Performance assessment of sentinel-3/6 altimeter data for marine gravity recovery
High-precision sea surface height is crucial for determining the marine gravity field. The Sentinel-3/6 altimetry missions, equipped with SRAL and Poseidon-4 altimeters, provide this essential data. However, there is a lack of comprehensive assessment of the Sentinel-3/6 altimeters for inverting mar...
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2024
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Online Access: | https://doi.org/10.3389/fmars.2024.1440845 https://doaj.org/article/aa648584563b41f6a7ad96e22e942ca3 |
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ftdoajarticles:oai:doaj.org/article:aa648584563b41f6a7ad96e22e942ca3 2024-10-06T13:52:26+00:00 Performance assessment of sentinel-3/6 altimeter data for marine gravity recovery Aoyu Ma Nengfang Chao Pengbo Qin Cheinway Hwang Chengcheng Zhu Gang Chen Zhengtao Wang Shuai Wang 2024-09-01T00:00:00Z https://doi.org/10.3389/fmars.2024.1440845 https://doaj.org/article/aa648584563b41f6a7ad96e22e942ca3 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2024.1440845/full https://doaj.org/toc/2296-7745 doi:10.3389/fmars.2024.1440845 https://doaj.org/article/aa648584563b41f6a7ad96e22e942ca3 Frontiers in Marine Science, Vol 11 (2024) sentinel-3/6 marine gravity anomalies performance South China Sea Ross Sea Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2024 ftdoajarticles https://doi.org/10.3389/fmars.2024.1440845 2024-09-25T15:39:12Z High-precision sea surface height is crucial for determining the marine gravity field. The Sentinel-3/6 altimetry missions, equipped with SRAL and Poseidon-4 altimeters, provide this essential data. However, there is a lack of comprehensive assessment of the Sentinel-3/6 altimeters for inverting marine gravity anomalies (MGA). In this study, we employ the inverse Venning-Meinsz method to derive nine sets of 1’×1’ MGAs in the South China Sea (SCS) and the Ross Sea (RS). Specifically, MGAs from Sentinel-3A, Sentinel-3B, Sentinel-6 SARM, Sentinel-6 LRM, HY-2A, ICESat-2, and CryoSat-2 are denoted as S3A, S3B, S6S, S6L, H2A, IS2, and CS2, respectively. MGA from the combined HY-2A, ICESat-2, and CryoSat-2 is referred to as HIC, while 3SHIC denotes the MGA from the combination of Sentinel-3/6 SARM, HY2A, ICESat-2, and CryoSat-2. We assess the performance of these MGAs using the EGM08, DTU17, SIO V32.1, and SDUST2021 gravity field models, as well as shipboard gravity across different ocean regions. Among the Sentinel-3/6 MGAs, S3B exhibits the highest accuracy in the SCS, with a root mean square error (RMSE) of 5.277 mGal, followed closely by S3A. Conversely, S3A demonstrates the highest accuracy with an RMSE of 4.635 mGal, followed by S3B in the RS. The inversion accuracy of MGAs from S6S and S6L are comparable, though S6S outperforms S6L in the open sea. The performance of MGAs from Sentinel-3/6 matches or surpasses that of other altimetry missions during the same period. In the SCS, the best-performing MGA is 3SHIC, with an RMSE of 4.585 mGal, closely matching DTU17. However, 3SHIC exhibits superior performance in the RS with an RMSE of 4.263 mGal compared to DTU17 and SDUST 2021. Furthermore, the performance of 3SHIC, which integrates Sentinel-3/6 data, improves that of HIC by 0.74% and 3.37% in the SCS and RS, respectively. These results underscore the contribution of Sentinel-3/6 altimeters to the MGA, particularly in coastal and high-latitude regions. Integration of Sentinel-3/6 data with other altimetry ... Article in Journal/Newspaper Ross Sea Directory of Open Access Journals: DOAJ Articles Ross Sea The Sentinel ENVELOPE(73.317,73.317,-52.983,-52.983) Frontiers in Marine Science 11 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sentinel-3/6 marine gravity anomalies performance South China Sea Ross Sea Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
sentinel-3/6 marine gravity anomalies performance South China Sea Ross Sea Science Q General. Including nature conservation geographical distribution QH1-199.5 Aoyu Ma Nengfang Chao Pengbo Qin Cheinway Hwang Chengcheng Zhu Gang Chen Zhengtao Wang Shuai Wang Performance assessment of sentinel-3/6 altimeter data for marine gravity recovery |
topic_facet |
sentinel-3/6 marine gravity anomalies performance South China Sea Ross Sea Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
High-precision sea surface height is crucial for determining the marine gravity field. The Sentinel-3/6 altimetry missions, equipped with SRAL and Poseidon-4 altimeters, provide this essential data. However, there is a lack of comprehensive assessment of the Sentinel-3/6 altimeters for inverting marine gravity anomalies (MGA). In this study, we employ the inverse Venning-Meinsz method to derive nine sets of 1’×1’ MGAs in the South China Sea (SCS) and the Ross Sea (RS). Specifically, MGAs from Sentinel-3A, Sentinel-3B, Sentinel-6 SARM, Sentinel-6 LRM, HY-2A, ICESat-2, and CryoSat-2 are denoted as S3A, S3B, S6S, S6L, H2A, IS2, and CS2, respectively. MGA from the combined HY-2A, ICESat-2, and CryoSat-2 is referred to as HIC, while 3SHIC denotes the MGA from the combination of Sentinel-3/6 SARM, HY2A, ICESat-2, and CryoSat-2. We assess the performance of these MGAs using the EGM08, DTU17, SIO V32.1, and SDUST2021 gravity field models, as well as shipboard gravity across different ocean regions. Among the Sentinel-3/6 MGAs, S3B exhibits the highest accuracy in the SCS, with a root mean square error (RMSE) of 5.277 mGal, followed closely by S3A. Conversely, S3A demonstrates the highest accuracy with an RMSE of 4.635 mGal, followed by S3B in the RS. The inversion accuracy of MGAs from S6S and S6L are comparable, though S6S outperforms S6L in the open sea. The performance of MGAs from Sentinel-3/6 matches or surpasses that of other altimetry missions during the same period. In the SCS, the best-performing MGA is 3SHIC, with an RMSE of 4.585 mGal, closely matching DTU17. However, 3SHIC exhibits superior performance in the RS with an RMSE of 4.263 mGal compared to DTU17 and SDUST 2021. Furthermore, the performance of 3SHIC, which integrates Sentinel-3/6 data, improves that of HIC by 0.74% and 3.37% in the SCS and RS, respectively. These results underscore the contribution of Sentinel-3/6 altimeters to the MGA, particularly in coastal and high-latitude regions. Integration of Sentinel-3/6 data with other altimetry ... |
format |
Article in Journal/Newspaper |
author |
Aoyu Ma Nengfang Chao Pengbo Qin Cheinway Hwang Chengcheng Zhu Gang Chen Zhengtao Wang Shuai Wang |
author_facet |
Aoyu Ma Nengfang Chao Pengbo Qin Cheinway Hwang Chengcheng Zhu Gang Chen Zhengtao Wang Shuai Wang |
author_sort |
Aoyu Ma |
title |
Performance assessment of sentinel-3/6 altimeter data for marine gravity recovery |
title_short |
Performance assessment of sentinel-3/6 altimeter data for marine gravity recovery |
title_full |
Performance assessment of sentinel-3/6 altimeter data for marine gravity recovery |
title_fullStr |
Performance assessment of sentinel-3/6 altimeter data for marine gravity recovery |
title_full_unstemmed |
Performance assessment of sentinel-3/6 altimeter data for marine gravity recovery |
title_sort |
performance assessment of sentinel-3/6 altimeter data for marine gravity recovery |
publisher |
Frontiers Media S.A. |
publishDate |
2024 |
url |
https://doi.org/10.3389/fmars.2024.1440845 https://doaj.org/article/aa648584563b41f6a7ad96e22e942ca3 |
long_lat |
ENVELOPE(73.317,73.317,-52.983,-52.983) |
geographic |
Ross Sea The Sentinel |
geographic_facet |
Ross Sea The Sentinel |
genre |
Ross Sea |
genre_facet |
Ross Sea |
op_source |
Frontiers in Marine Science, Vol 11 (2024) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2024.1440845/full https://doaj.org/toc/2296-7745 doi:10.3389/fmars.2024.1440845 https://doaj.org/article/aa648584563b41f6a7ad96e22e942ca3 |
op_doi |
https://doi.org/10.3389/fmars.2024.1440845 |
container_title |
Frontiers in Marine Science |
container_volume |
11 |
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1812180811710988288 |