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Remote Sensing
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Validation and Evaluation of Global Ocean Satellite Products (Second Edition)
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Validation and Evaluation of Global Ocean Satellite Products (Second Edition)

A special issue of Remote Sensing (ISSN 2072-4292). This special issue belongs to the section "Ocean Remote Sensing".

Deadline for manuscript submissions: 31 October 2024 | Viewed by 1409

Special Issue Editors

Dr. Po-Chun Hsu

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Guest Editor
Center for Space and Remote Sensing Research, National Central University, Taoyuan 32001, Taiwan
Interests: satellite oceanography; ocean dynamics processes and ocean environment; ocean–typhoon interactions; upper ocean and submesoscale processes
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Chung-Ru Ho

E-Mail Website
Guest Editor
Department of Marine Environmental Informatics, National Taiwan Ocean University, Keelung 202301, Taiwan
Interests: remote sensing; physical oceanography; global change; satellite oceanography
Special Issues, Collections and Topics in MDPI journals
Dr. Shota Katsura

E-Mail Website
Guest Editor
Atmosphere and Ocean Research Institute, The University of Tokyo, Tokyo 113-8654, Japan
Interests: salinity; mixed layer; water mass
Special Issues, Collections and Topics in MDPI journals
Dr. Bingqing Liu

E-Mail Website
Guest Editor
School of Geosciences, University of Louisiana at Lafayette, Lafayette, LA 70503, USA
Interests: ocean color remote sensing; carbon cycling of land–ocean interactions; phytoplankton community dynamics
Special Issues, Collections and Topics in MDPI journals
Dr. Jen-Ping Peng

E-Mail Website
Guest Editor
Oceans Graduate School, The University of Western Australia, Crawley, WA 6009, Australia
Interests: physical oceanography; submesoscale frontal dynamics and instabilities; surface boundary layer turbulence and mixing; air–sea interactions; diurnal effects; and upwelling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Ocean science for sustainable development is one of the important issues of ocean research in this decade. With the development of science and technology, ocean satellite products continue to provide higher spatial resolution and more frequent repeated observations, and geosynchronous satellites can further observe continuous sea surface changes at the same place. Satellite ocean data can effectively observe sea surface variations at various spatial scales in a short period of time, help scientists find new scientific discoveries and clarify various scientific issues, and provide reference materials for scientists to plan before cruise and observation. For this Special Issue, we welcome any papers using ocean satellite products and particularly encourage research examining in situ observation data and breakthrough discoveries in regional and global oceanography.

The topics of interest include, but are not limited to, the following:

  • Data verification and analysis between in situ observation and ocean satellite products;
  • Data algorithm and verification of ocean satellite products;
  • Data comparison and correctness evaluation of various satellite products;
  • Comparison of numerical simulation and satellite data;
  • Feedback of climate variability to the ocean;
  • Breakthrough of scientific issues in regional oceanography.

Dr. Po-Chun Hsu
Prof. Dr. Chung-Ru Ho
Dr. Shota Katsura
Dr. Bingqing Liu
Dr. Jen-Ping Peng
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Remote Sensing is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sea surface current, temperature, and salinity
  • ocean color and chlorophyll-a concentration
  • oceanic front
  • new approaches, methods and algorithms
  • climatic variables
  • ocean–typhoon interaction
  • multiscale ocean dynamics

Related Special Issue

Published Papers (2 papers)

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Research

22 pages, 7667 KiB  
Article
Altimeter Calibrations in the Preliminary Four Years’ Operation of Wanshan Calibration Site
by Wanlin Zhai, Jianhua Zhu, Hailong Peng, Chuntao Chen, Longhao Yan, He Wang, Xiaoqi Huang, Wu Zhou, Hai Guo and Yufei Zhang
Remote Sens. 2024, 16(6), 1087; https://doi.org/10.3390/rs16061087 - 20 Mar 2024
Viewed by 568
Abstract
In order to accomplish the calibration and validation (Cal/Val) of altimeters, the Wanshan calibration site (WSCS) has been used as a calibration site for satellite altimeters since its completion in August 2019. In this paper, we introduced the WSCS and the dedicated equipment [...] Read more.
In order to accomplish the calibration and validation (Cal/Val) of altimeters, the Wanshan calibration site (WSCS) has been used as a calibration site for satellite altimeters since its completion in August 2019. In this paper, we introduced the WSCS and the dedicated equipment including permanent GNSS reference stations (PGSs), acoustic tide gauges (ATGs), and dedicated GNSS buoys (DGB), etc. placed on Zhi’wan, Wai’ling’ding, Dan’gan, and Miao’Wan islands of the WSCS. The PGSs data of Zhi’wan and Wai’ling’ding islands were processed and analyzed using the GAMIT/GLOBK (Version 10.7) and Hector (Version 1.9) software to define the datum for Cal/Val of altimeters in WSCS. The DGB was used to transfer the datum from the PGSs to the ATGs of Zhi’wan, Wai’ling’ding, and Dan’gan islands. Separately, the tidal and mean sea surface (MSS) corrections are needed in the Cal/Val of altimeters. We evaluated the global/regional tide models of FES2014, HAMTIDE12, DTU16, NAO99jb, GOT4.10, and EOT20 using the three in situ tide gauge data of WSCS and Hong Kong tide gauge data (No. B329) derived from the Global Sea Level Observing System. The HAMTIDE12 tide model was chosen to be the most accurate one to maintain the tidal difference between the locations of the ATGs and the altimeter footprints. To establish the sea surface connections between the ATGs and the altimeter footprints, a GPS towing body and a highly accurate ship-based SSH measurement system (HASMS) were used to measure the sea surface of this area in 2018 and 2022, respectively. The global/regional mean sea surface (MSS) models of DTU 2021, EGM 2008 (mean dynamic topography minus by CLS_MDT_2018), and CLS2015 were accurately evaluated using the in situ measured data and HY-2A altimeter, and the CLS2015 MSS model was used for Cal/Val of altimeters in WSCS. The data collected by the equipment of WSCS, related auxiliary models mentioned above, and the sea level data of the hydrological station placed on Dan’gan island were used to accomplish the Cal/Val of HY-2B, HY-2C, Jason-3, and Sentinel-3A (S3A) altimeters. The bias of HY-2B (Pass No. 375) was −16.7 ± 45.2 mm, with a drift of 0.5 mm/year. The HY-2C biases were −18.9 ± 48.0 mm with drifts of 0.0 mm/year and −5.6 ± 49.3 mm with −0.3 mm/year drifts for Pass No. 170 and 185, respectively. The Jason-3 bias was −4.1 ± 78.7 mm for Pass No. 153 and −25.8 ± 85.5 mm for Pass No. 012 after it has changed its orbits since April 2022, respectively. The biases of S3A were determined to be −16.5 ± 46.3 mm with a drift of −0.6 mm/year and −9.8 ± 30.1 mm with a drift of 0.5 mm/year for Pass No. 260 and 309, respectively. The calibration results show that the WSCS can commercialize the satellite altimeter calibration. We also discussed the calibration potential for a wide swath satellite altimeter of WSCS. Full article
(This article belongs to the Special Issue Validation and Evaluation of Global Ocean Satellite Products (Second Edition))
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20 pages, 9099 KiB  
Article
Accuracy Evaluation of Ocean Wave Spectra from Sentinel-1 SAR Based on Buoy Observations and ERA5 Data
by Fengjia Sun, Jungang Yang and Wei Cui
Remote Sens. 2024, 16(6), 987; https://doi.org/10.3390/rs16060987 - 12 Mar 2024
Viewed by 543
Abstract
Doppler mis-registrations in azimuth can lead to ocean waves shorter than a specific wavelength being undetectable by SAR. In order to evaluate the actual ocean wave observation ability, the accuracy of Sentinel-1 SAR ocean wave spectra from January 2016 to December 2021 is [...] Read more.
Doppler mis-registrations in azimuth can lead to ocean waves shorter than a specific wavelength being undetectable by SAR. In order to evaluate the actual ocean wave observation ability, the accuracy of Sentinel-1 SAR ocean wave spectra from January 2016 to December 2021 is evaluated by comparisons to NDBC buoys, ERA5 wave height, and CMEMS buoys. The results compared with NDBC show that the spectral shape of Sentinel-1 SAR ocean wave spectra is accurate, while the spectral values need to be improved. The wave spectra of Sentinel-1 have the best observations in season autumn. The comparison results of total wave height show the RMSE and bias are 0.91 m and −0.52 m for the comparisons to NDBC buoy wave spectra data, 0.93 m and −0.68 m for the comparison to ERA5 wave height data, and 0.9 m and −0.35 m for the comparisons to CMEMS buoy data. The comparison results of wave height in different wind speeds and areas shows that the accuracy of Sentinel-1 wave mode data is relatively good in the open ocean located in middle and low latitude area under the medium wind speed, while those are relatively poor in high latitude areas or the areas with excessively high or low wind speed. Full article
(This article belongs to the Special Issue Validation and Evaluation of Global Ocean Satellite Products (Second Edition))
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