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Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data
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| Zeitschriftentitel: | Sensors |
|---|---|
| Personen und Körperschaften: | , |
| In: | Sensors, 19, 2019, 13, S. 2914 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
MDPI AG
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| Schlagwörter: |
| author_facet |
Yang, Jungang Zhang, Jie Yang, Jungang Zhang, Jie |
|---|---|
| author |
Yang, Jungang Zhang, Jie |
| spellingShingle |
Yang, Jungang Zhang, Jie Sensors Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data Electrical and Electronic Engineering Biochemistry Instrumentation Atomic and Molecular Physics, and Optics Analytical Chemistry |
| author_sort |
yang, jungang |
| spelling |
Yang, Jungang Zhang, Jie 1424-8220 MDPI AG Electrical and Electronic Engineering Biochemistry Instrumentation Atomic and Molecular Physics, and Optics Analytical Chemistry http://dx.doi.org/10.3390/s19132914 <jats:p>The validation of significant wave height (SWH) data measured by the Sentinel-3A/3B SAR Altimeter (SRAL) is essential for the application of the data in ocean wave monitoring, forecasting and wave climate studies. Sentinel-3A/3B SWH data are validated by comparisons with U. S. National Data Buoy Center (NDBC) buoys, using a spatial scale of 25 km and a temporal scale of 30 min, and with Jason-3 data at their crossovers, using a time difference of less than 30 min. The comparisons with NDBC buoy data show that the root-mean-square error (RMSE) of Sentinel-3A SWH is 0.30 m, and that of Sentinel-3B is no more than 0.31 m. The pseudo-Low-Resolution Mode (PLRM) SWH is slightly better than that of the Synthetic Aperture Radar (SAR) mode. The statistical analysis of Sentinel-3A/3B SWH in the bin of 0.5 m wave height shows that the accuracy of Sentinel-3A/3B SWH data decreases with increasing wave height. The analysis of the monthly biases and RMSEs of Sentinel-3A SWH shows that Sentinel-3A SWH are stable and have a slight upward trend with time. The comparisons with Jason-3 data show that SWH of Sentinel-3A and Jason-3 are consistent in the global ocean. Finally, the piecewise calibration functions are given for the calibration of Sentinel-3A/3B SWH. The results of the study show that Sentinel-3A/3B SWH data have high accuracy and remain stable.</jats:p> Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data Sensors |
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MDPI AG, 2019 |
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| title |
Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_unstemmed |
Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_full |
Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_fullStr |
Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_full_unstemmed |
Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_short |
Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_sort |
validation of sentinel-3a/3b satellite altimetry wave heights with buoy and jason-3 data |
| topic |
Electrical and Electronic Engineering Biochemistry Instrumentation Atomic and Molecular Physics, and Optics Analytical Chemistry |
| url |
http://dx.doi.org/10.3390/s19132914 |
| publishDate |
2019 |
| physical |
2914 |
| description |
<jats:p>The validation of significant wave height (SWH) data measured by the Sentinel-3A/3B SAR Altimeter (SRAL) is essential for the application of the data in ocean wave monitoring, forecasting and wave climate studies. Sentinel-3A/3B SWH data are validated by comparisons with U. S. National Data Buoy Center (NDBC) buoys, using a spatial scale of 25 km and a temporal scale of 30 min, and with Jason-3 data at their crossovers, using a time difference of less than 30 min. The comparisons with NDBC buoy data show that the root-mean-square error (RMSE) of Sentinel-3A SWH is 0.30 m, and that of Sentinel-3B is no more than 0.31 m. The pseudo-Low-Resolution Mode (PLRM) SWH is slightly better than that of the Synthetic Aperture Radar (SAR) mode. The statistical analysis of Sentinel-3A/3B SWH in the bin of 0.5 m wave height shows that the accuracy of Sentinel-3A/3B SWH data decreases with increasing wave height. The analysis of the monthly biases and RMSEs of Sentinel-3A SWH shows that Sentinel-3A SWH are stable and have a slight upward trend with time. The comparisons with Jason-3 data show that SWH of Sentinel-3A and Jason-3 are consistent in the global ocean. Finally, the piecewise calibration functions are given for the calibration of Sentinel-3A/3B SWH. The results of the study show that Sentinel-3A/3B SWH data have high accuracy and remain stable.</jats:p> |
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| _version_ | 1792344964115464194 |
| author | Yang, Jungang, Zhang, Jie |
| author_facet | Yang, Jungang, Zhang, Jie, Yang, Jungang, Zhang, Jie |
| author_sort | yang, jungang |
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| description | <jats:p>The validation of significant wave height (SWH) data measured by the Sentinel-3A/3B SAR Altimeter (SRAL) is essential for the application of the data in ocean wave monitoring, forecasting and wave climate studies. Sentinel-3A/3B SWH data are validated by comparisons with U. S. National Data Buoy Center (NDBC) buoys, using a spatial scale of 25 km and a temporal scale of 30 min, and with Jason-3 data at their crossovers, using a time difference of less than 30 min. The comparisons with NDBC buoy data show that the root-mean-square error (RMSE) of Sentinel-3A SWH is 0.30 m, and that of Sentinel-3B is no more than 0.31 m. The pseudo-Low-Resolution Mode (PLRM) SWH is slightly better than that of the Synthetic Aperture Radar (SAR) mode. The statistical analysis of Sentinel-3A/3B SWH in the bin of 0.5 m wave height shows that the accuracy of Sentinel-3A/3B SWH data decreases with increasing wave height. The analysis of the monthly biases and RMSEs of Sentinel-3A SWH shows that Sentinel-3A SWH are stable and have a slight upward trend with time. The comparisons with Jason-3 data show that SWH of Sentinel-3A and Jason-3 are consistent in the global ocean. Finally, the piecewise calibration functions are given for the calibration of Sentinel-3A/3B SWH. The results of the study show that Sentinel-3A/3B SWH data have high accuracy and remain stable.</jats:p> |
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| spelling | Yang, Jungang Zhang, Jie 1424-8220 MDPI AG Electrical and Electronic Engineering Biochemistry Instrumentation Atomic and Molecular Physics, and Optics Analytical Chemistry http://dx.doi.org/10.3390/s19132914 <jats:p>The validation of significant wave height (SWH) data measured by the Sentinel-3A/3B SAR Altimeter (SRAL) is essential for the application of the data in ocean wave monitoring, forecasting and wave climate studies. Sentinel-3A/3B SWH data are validated by comparisons with U. S. National Data Buoy Center (NDBC) buoys, using a spatial scale of 25 km and a temporal scale of 30 min, and with Jason-3 data at their crossovers, using a time difference of less than 30 min. The comparisons with NDBC buoy data show that the root-mean-square error (RMSE) of Sentinel-3A SWH is 0.30 m, and that of Sentinel-3B is no more than 0.31 m. The pseudo-Low-Resolution Mode (PLRM) SWH is slightly better than that of the Synthetic Aperture Radar (SAR) mode. The statistical analysis of Sentinel-3A/3B SWH in the bin of 0.5 m wave height shows that the accuracy of Sentinel-3A/3B SWH data decreases with increasing wave height. The analysis of the monthly biases and RMSEs of Sentinel-3A SWH shows that Sentinel-3A SWH are stable and have a slight upward trend with time. The comparisons with Jason-3 data show that SWH of Sentinel-3A and Jason-3 are consistent in the global ocean. Finally, the piecewise calibration functions are given for the calibration of Sentinel-3A/3B SWH. The results of the study show that Sentinel-3A/3B SWH data have high accuracy and remain stable.</jats:p> Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data Sensors |
| spellingShingle | Yang, Jungang, Zhang, Jie, Sensors, Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data, Electrical and Electronic Engineering, Biochemistry, Instrumentation, Atomic and Molecular Physics, and Optics, Analytical Chemistry |
| title | Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_full | Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_fullStr | Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_full_unstemmed | Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_short | Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| title_sort | validation of sentinel-3a/3b satellite altimetry wave heights with buoy and jason-3 data |
| title_unstemmed | Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data |
| topic | Electrical and Electronic Engineering, Biochemistry, Instrumentation, Atomic and Molecular Physics, and Optics, Analytical Chemistry |
| url | http://dx.doi.org/10.3390/s19132914 |