{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T08:51:24Z","timestamp":1765961484338,"version":"build-2065373602"},"reference-count":57,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,1,5]],"date-time":"2022-01-05T00:00:00Z","timestamp":1641340800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["42004008"],"award-info":[{"award-number":["42004008"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"the Natural Science Foundation of Jiangsu Province, China","award":["BK20190498"],"award-info":[{"award-number":["BK20190498"]}]},{"name":"the Fundamental Research Funds for the Central Universities","award":["B200202019"],"award-info":[{"award-number":["B200202019"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>MDT recovery over coastal regions is challenging, as the mean sea surface (MSS) and geoid\/quasi-geoid models are of low quality. The altimetry satellites equipped with the synthetic aperture radar (SAR) altimeters provide more accurate sea surface heights than traditional ones close to the coast. We investigate the role of using the SAR-based MSS in coastal MDT recovery, and the effects introduced by the SAR altimetry data are quantified and assessed. We model MDTs based on the multivariate objective analysis, where the MSS and the recently released satellite-only global geopotential model are combined. The numerical experiments over the coast of Japan and southeastern China show that the use of the SAR-based MSS improves the local MDT. The root mean square (RMS) of the misfits between MDT-modeled with SAR altimetry data and the ocean data is lower than that derived from MDT computed without SAR data\u2014by a magnitude of 4\u20138 mm. Moreover, the geostrophic velocities derived from MDT modeled with the SAR altimetry data have better fits with buoy data than those derived from MDT modeled without SAR data. In total, our studies highlight the use of SAR altimetry data in coastal MDT recovery.<\/jats:p>","DOI":"10.3390\/rs14010240","type":"journal-article","created":{"date-parts":[[2022,1,9]],"date-time":"2022-01-09T23:08:26Z","timestamp":1641769706000},"page":"240","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Coastal Mean Dynamic Topography Recovery Based on Multivariate Objective Analysis by Combining Data from Synthetic Aperture Radar Altimeter"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8026-6105","authenticated-orcid":false,"given":"Yihao","family":"Wu","sequence":"first","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"}]},{"given":"Jia","family":"Huang","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"},{"name":"School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5262-1007","authenticated-orcid":false,"given":"Xiufeng","family":"He","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"}]},{"given":"Zhicai","family":"Luo","sequence":"additional","affiliation":[{"name":"MOE Key Laboratory of Fundamental Physical Quantities Measurement, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0106-8360","authenticated-orcid":false,"given":"Haihong","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"5079","DOI":"10.1109\/JSTARS.2016.2553049","article-title":"Intraseasonal Variability of the Winter Western Boundary Current in the South China Sea Using Satellite Data and Mooring Observations","volume":"9","author":"Lyu","year":"2016","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"401","DOI":"10.5194\/os-15-401-2019","article-title":"A simple predictive model for the eddy propagation trajectory in the northern South China Sea","volume":"15","author":"Li","year":"2019","journal-title":"Ocean Sci."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"6815","DOI":"10.1002\/2015JC010920","article-title":"Tilt of mean sea level along the Pacific coasts of North America and Japan","volume":"120","author":"Lin","year":"2015","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1413","DOI":"10.1007\/s00190-018-1131-5","article-title":"Comparison between geodetic and oceanographic approaches to estimate mean dynamic topography for vertical datum unification: Evaluation at Australian tide gauges","volume":"12","author":"Filmer","year":"2018","journal-title":"J. Geod."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"C08035","DOI":"10.1029\/2012JC007974","article-title":"The north-south tilt in the Australian Height Datum is explained by the ocean\u2019s mean dynamic topography","volume":"117","author":"Featherstone","year":"2012","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"2569","DOI":"10.1007\/s00190-019-01320-3","article-title":"Coastal gravity field refinement by combining airborne and ground-based data","volume":"93","author":"Wu","year":"2019","journal-title":"J. Geod."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"014001","DOI":"10.1088\/1748-9326\/11\/1\/014001","article-title":"A multi-dimensional integrated approach to assess flood risks on a coastal city, induced by sea-level rise and storm tides","volume":"11","author":"Xu","year":"2016","journal-title":"Environ. Res. Lett."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"e2021GL092420","DOI":"10.1029\/2021GL092420","article-title":"Sea Level-Driven Marsh Migration Results in Rapid Net Loss of Carbon","volume":"48","author":"Smith","year":"2021","journal-title":"Geophys. Res. Lett."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"871","DOI":"10.5194\/esd-12-871-2021","article-title":"Sea level dynamics and coastal erosion in the Baltic Sea region","volume":"12","author":"Weisse","year":"2021","journal-title":"Earth Syst. Dyn."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Genchi, S.A., Vitale, A.J., Perillo, G.M.E., Seitz, C., and Delrieux, C.A. (2020). Mapping Topobathymetry in a Shallow Tidal Environment Using Low-Cost Technology. Remote Sens., 12.","DOI":"10.3390\/rs12091394"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2008JC005179","article-title":"DNSC08 mean sea surface and mean dynamic topography models","volume":"114","author":"Andersen","year":"2009","journal-title":"J. Geophys. Res. Space Phys."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1080\/01490419.2012.718231","article-title":"The CNES_CLS11 Global Mean Sea Surface Computed from 16 Years of Satellite Altimeter Data","volume":"35","author":"Schaeffer","year":"2012","journal-title":"Mar. Geod."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"L09607","DOI":"10.1029\/2004GL019920","article-title":"The gravity recovery and climate experiment: Mission overview and early results","volume":"31","author":"Tapley","year":"2004","journal-title":"Geophys. Res. Lett."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2163","DOI":"10.1029\/2003GL018622","article-title":"Large scale ocean circulation from the GRACE GGM01 Geoid","volume":"30","author":"Tapley","year":"2003","journal-title":"Geophys. Res. Lett."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"819","DOI":"10.1007\/s00190-011-0467-x","article-title":"First GOCE gravity field models derived by three different approaches","volume":"85","author":"Pail","year":"2011","journal-title":"J. Geod."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Pail, R., Goiginger, H., Schuh, W.-D., Hock, E., Brockmann, J.M., Fecher, T., Gruber, T., Mayer-G\u00fcrr, T., Kusche, J., and J\u00e4ggi, A. (2010). Combined satellite gravity field modelGOCO01Sderived from GOCE and GRACE. Geophys. Res. Lett., 37.","DOI":"10.1029\/2010GL044906"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"3607","DOI":"10.1002\/grl.50716","article-title":"The new ESA satellite-only gravity field model via the direct approach","volume":"40","author":"Bruinsma","year":"2013","journal-title":"Geophys. Res. Lett."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"L01606","DOI":"10.1029\/2010GL045633","article-title":"An initial estimate of the North Atlantic steady-state geostrophic circulation from GOCE","volume":"38","author":"Bingham","year":"2011","journal-title":"Geophys. Res. Lett."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"893","DOI":"10.1007\/s10236-012-0541-9","article-title":"Performance of GOCE and GRACE-derived mean dynamic topographies in resolving Antarctic Circumpolar Current fronts","volume":"62","author":"Volkov","year":"2012","journal-title":"Ocean Dyn."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"C06012","DOI":"10.1029\/2005JC003039","article-title":"A coastal retracking system for satellite radar altimeter waveforms: Application to ERS-2 around Australia","volume":"111","author":"Deng","year":"2006","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_21","unstructured":"Benveniste, J. (2011). Range and geophysical corrections in coastal regions: And implications for mean sea surface determination. Coastal Altimetry, Springer."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1841","DOI":"10.1002\/2015GL063131","article-title":"Coastal sea level from inland CryoSat-2 interferometric SAR altimetry","volume":"42","author":"Abulaitijiang","year":"2015","journal-title":"Geophys. Res. Lett."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1371","DOI":"10.1016\/j.asr.2017.12.018","article-title":"Coastal SAR and PLRM altimetry in German bight and west Baltic sea","volume":"62","author":"Dinardo","year":"2017","journal-title":"Adv. Space Res."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"e2019JC015820","DOI":"10.1029\/2019JC015820","article-title":"Sea Ice Roughness Overlooked as a Key Source of Uncertainty in CryoSat-2 Ice Freeboard Retrievals","volume":"125","author":"Landy","year":"2020","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1405","DOI":"10.1016\/j.asr.2017.10.042","article-title":"Validation of CryoSat-2 SIRAL sea level data in the eastern continental shelf of the Gulf of Cadiz (Spain)","volume":"62","author":"Vignudelli","year":"2018","journal-title":"Adv. Space Res."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1344","DOI":"10.1016\/j.asr.2017.07.043","article-title":"Coastal sea level from CryoSat-2 SARIn altimetry in Norway","volume":"62","author":"Ophaug","year":"2018","journal-title":"Adv. Space Res."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"853","DOI":"10.1016\/j.asr.2020.07.015","article-title":"Impact of vertical water particle motions on focused SAR altimetry","volume":"68","author":"Buchhaupt","year":"2021","journal-title":"Adv. Space Res."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Bonnefond, P., Laurain, O., Exertier, P., Boy, F., Guinle, T., Picot, N., Labroue, S., Raynal, M., Donlon, C., and F\u00e9m\u00e9nias, P. (2018). Calibrating the SAR SSH of Sentinel-3A and CryoSat-2 over the Corsica Facilities. Remote Sens., 10.","DOI":"10.3390\/rs10010092"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1016\/j.rse.2011.07.024","article-title":"The Global Monitoring for Environment and Security (GMES) Sentinel-3 mission","volume":"120","author":"Donlon","year":"2012","journal-title":"Remote Sens. Environ."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"559","DOI":"10.1016\/0011-7471(76)90001-2","article-title":"A technique for objective analysis and design of oceanographic experiments applied to MODE-73","volume":"23","author":"Bretherton","year":"1976","journal-title":"Deep Sea Res. Oceanogr. Abstr."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"C07018","DOI":"10.1029\/2010JC006505","article-title":"New CNES-CLS09 global mean dynamic topography computed from the combination of GRACE data, altimetry, and in situ measurements","volume":"116","author":"Rio","year":"2011","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"C12032","DOI":"10.1029\/2003JC002226","article-title":"Mean dynamic topography computed over the world ocean from altimetry, in situ measurements, and a geoid model","volume":"109","author":"Rio","year":"2004","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"8918","DOI":"10.1002\/2014GL061773","article-title":"Beyond GOCE for the ocean circulation estimate: Synergetic use of altimetry, gravimetry, and in situ data provides new insight into geostrophic and Ekman currents","volume":"41","author":"Rio","year":"2014","journal-title":"Geophys. Res. Lett."},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Wu, Y., Huang, J., Shi, H., and He, X. (2021). Mean Dynamic Topography Modeling Based on Optimal Interpolation from Satellite Gravimetry and Altimetry Data. Appl. Sci., 11.","DOI":"10.3390\/app11115286"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"153","DOI":"10.1175\/1520-0485(1985)015<0153:DOEMIT>2.0.CO;2","article-title":"Dynamics of eddy motions in the eastern North Atlantic","volume":"15","author":"Arhan","year":"1985","journal-title":"J. Phys. Oceanogr."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"989","DOI":"10.1007\/s00190-009-0317-2","article-title":"Efficient propagation of error covariance matrices of gravitational models: Application to GRACE and GOCE","volume":"83","author":"Balmino","year":"2009","journal-title":"J. Geod."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"3336","DOI":"10.1002\/2013JC009354","article-title":"How well can we measure the ocean\u2019s mean dynamic topography from space?","volume":"119","author":"Bingham","year":"2014","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_38","first-page":"595","article-title":"Dynamic Structure of the Kuroshio South of Kyushu in Relation to the Kuroshio Path Variations","volume":"59","author":"Oka","year":"2003","journal-title":"J. Geophys. Res."},{"key":"ref_39","unstructured":"Andersen, O., Knudsen, P., and Stenseng, L. (2018, January 24\u201329). A New DTU18 MSS Mean Sea Surface\u2013Improvement from SAR Altimetry. Proceedings of the 25 Years of Progress in Radar Altimetry Symposium, Ponta Delgada, Portugal."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1513","DOI":"10.1007\/s00024-021-02709-y","article-title":"Sea Surface Heights and Marine Gravity Determined from SARAL\/AltiKa Ka-band Altimeter Over South China Sea","volume":"178","author":"Zhu","year":"2021","journal-title":"Pure Appl. Geophys."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"111546","DOI":"10.1016\/j.rse.2019.111546","article-title":"Evaluation of Sentinel-3 SRAL SAR altimetry over Chinese rivers","volume":"237","author":"Jiang","year":"2020","journal-title":"Remote Sens. Environ."},{"key":"ref_42","doi-asserted-by":"crossref","unstructured":"Andersen, O.B., Abulaitijiang, A., Zhang, S., and Rose, S.K. (2021, January 19\u201330). A new high resolution Mean Sea Surface (DTU21MSS) for improved sea level monitoring. Proceedings of the EGU General Assembly 2021, Online. EGU21-16084.","DOI":"10.5194\/egusphere-egu21-16084"},{"key":"ref_43","unstructured":"F\u00f6rste, C., Abrykosov, O., Bruinsma, S., Dahle, C., K\u00f6nig, R., and Lemoine, J.M. (2019). ESA\u2019s Release 6 GOCE Gravity Field Model by Means of the Direct Approach Based on Improved Filtering of the Reprocessed Gradients of the Entire Mission, GFZ Data Services. Data Publication."},{"key":"ref_44","unstructured":"Gruber, T. (2019, January 8\u201318). GOCE Release 6 Products and Performance. Proceedings of the 27th IUGG General Assembly, Montreal, QC, Canada."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"6967","DOI":"10.1175\/JCLI-D-18-0149.1","article-title":"SODA3: A New Ocean Climate Reanalysis","volume":"31","author":"Carton","year":"2018","journal-title":"J. Clim."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"779","DOI":"10.5194\/os-15-779-2019","article-title":"The ECMWF operational ensemble reanalysis\u2013analysis system for ocean and sea ice: A description of the system and assessment","volume":"15","author":"Zuo","year":"2019","journal-title":"Ocean Sci."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"789","DOI":"10.5194\/os-17-789-2021","article-title":"The new CNES-CLS18 global mean dynamic topography","volume":"17","author":"Mulet","year":"2021","journal-title":"Ocean Sci."},{"key":"ref_48","unstructured":"Mayer-G\u00fcrr, T., Kvas, A., Klinger, B., Rieser, D., Zehentner, N., and Pail, R. (2015, January 12\u201317). The combined satellite gravity field model GOCO05s. Proceedings of the EGU General Assembly, Online."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"903","DOI":"10.1098\/rsta.2006.1745","article-title":"Mean dynamic topography: Intercomparisons and errors","volume":"364","author":"Bingham","year":"2006","journal-title":"Philos. Trans. R. Soc. A Math. Phys. Eng. Sci."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"7807","DOI":"10.1002\/2015JC011145","article-title":"A comparative assessment of coastal mean dynamic topography in Norway by geodetic and ocean approaches","volume":"120","author":"Ophaug","year":"2015","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"5609","DOI":"10.1002\/2017GL073777","article-title":"The coastal mean dynamic topography in Norway observed by CryoSat-2 and GOCE","volume":"44","author":"Ophaug","year":"2017","journal-title":"Geophys. Res. Lett."},{"key":"ref_52","doi-asserted-by":"crossref","unstructured":"Shi, H., He, X., Wu, Y., and Huang, J. (2020). The parameterization of mean dynamic topography based on the Lagrange basis functions. Adv. Space Res., 66.","DOI":"10.1016\/j.asr.2020.07.042"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"e2021JB021805","DOI":"10.1029\/2021JB021805","article-title":"Refinement of Mean Dynamic Topography Over Island Areas Using Airborne Gravimetry and Satellite Altimetry Data in the Northwestern South China Sea","volume":"126","author":"Wu","year":"2021","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"1771","DOI":"10.1029\/2000GL012723","article-title":"The Pacific Ocean Subtropical cell surface limb","volume":"28","author":"Johnson","year":"2001","journal-title":"Geophys. Res. Lett."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"2992","DOI":"10.1002\/jgrc.20210","article-title":"Global ocean surface velocities from drifters: Mean, variance, El Ni\u00f1o-Southern Oscillation response, and seasonal cycle","volume":"118","author":"Lumpkin","year":"2013","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1029\/2002GL016445","article-title":"Eulerian mean surface velocity field derived by combining drifter and satellite altimeter data","volume":"30","author":"Uchida","year":"2003","journal-title":"Geophys. Res. Lett"},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"23943","DOI":"10.1029\/2000JC900092","article-title":"Circulations and eddies over the South China Sea derived from TOPEX\/Poseidon altimetry","volume":"105","author":"Hwang","year":"2000","journal-title":"J. Geophys. Res. Space Phys."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/14\/1\/240\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T14:12:54Z","timestamp":1760364774000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/14\/1\/240"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,1,5]]},"references-count":57,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2022,1]]}},"alternative-id":["rs14010240"],"URL":"https:\/\/doi.org\/10.3390\/rs14010240","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2022,1,5]]}}}