Validation of Improved Significant Wave Heights from the Brown-Peaky (BP) Retracker along the East Coast of Australia
Improved significant wave heights (SWHs) along the east coast of Australia have been estimated using the parameters resolved by a Brown-peaky (BP) retracker through reprocessing of three years of Jason-1 altimetric waveforms. The BP-estimated SWHs are validated against eight waverider buoys along th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-07-01
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| Series: | Remote Sensing |
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| Online Access: | http://www.mdpi.com/2072-4292/10/7/1072 |
| _version_ | 1818959114613555200 |
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| author | Fukai Peng Xiaoli Deng |
| author_facet | Fukai Peng Xiaoli Deng |
| author_sort | Fukai Peng |
| collection | DOAJ |
| description | Improved significant wave heights (SWHs) along the east coast of Australia have been estimated using the parameters resolved by a Brown-peaky (BP) retracker through reprocessing of three years of Jason-1 altimetric waveforms. The BP-estimated SWHs are validated against eight waverider buoys along the coast, and compared with the SWHs estimated by the standard four-parameter maximum likelihood estimator (MLE4). When assessing 1 Hz coastal SWHs for distances from 12 km to the coast, mean standard deviations (STDs) of BP SWHs vary from ca. 0.5 m to 0.9 m, while those of MLE4 SWHs increase from ca. 0.6 m to ca. 2.3 m, indicating a dramatically drop in the quality of MLE4-derived SWHs at the coast. The BP retracker has retrieved ca. 80% of 1 Hz coastal SWHs, which are more than those (ca. 50%) by the standard MLE4. The validation of 1 Hz SWHs is performed by calculating the along-altimeter-track pointwise bias, STD and correlation coefficient between altimetry and buoys. The results show that within 30 km off the coast the BP dataset has better agreement with buoy’s wave heights than the SGDR MLE4 dataset in terms of the BP’s small absolute biases and STDs, as well as high correlation coefficients. |
| first_indexed | 2024-12-20T11:36:30Z |
| format | Article |
| id | doaj.art-066b129949614d948ed3109cd6138bd4 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-12-20T11:36:30Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
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| series | Remote Sensing |
| spelling | doaj.art-066b129949614d948ed3109cd6138bd42022-12-21T19:42:05ZengMDPI AGRemote Sensing2072-42922018-07-01107107210.3390/rs10071072rs10071072Validation of Improved Significant Wave Heights from the Brown-Peaky (BP) Retracker along the East Coast of AustraliaFukai Peng0Xiaoli Deng1School of Engineering, The University of Newcastle, Callaghan NSW 2308, AustraliaSchool of Engineering, The University of Newcastle, Callaghan NSW 2308, AustraliaImproved significant wave heights (SWHs) along the east coast of Australia have been estimated using the parameters resolved by a Brown-peaky (BP) retracker through reprocessing of three years of Jason-1 altimetric waveforms. The BP-estimated SWHs are validated against eight waverider buoys along the coast, and compared with the SWHs estimated by the standard four-parameter maximum likelihood estimator (MLE4). When assessing 1 Hz coastal SWHs for distances from 12 km to the coast, mean standard deviations (STDs) of BP SWHs vary from ca. 0.5 m to 0.9 m, while those of MLE4 SWHs increase from ca. 0.6 m to ca. 2.3 m, indicating a dramatically drop in the quality of MLE4-derived SWHs at the coast. The BP retracker has retrieved ca. 80% of 1 Hz coastal SWHs, which are more than those (ca. 50%) by the standard MLE4. The validation of 1 Hz SWHs is performed by calculating the along-altimeter-track pointwise bias, STD and correlation coefficient between altimetry and buoys. The results show that within 30 km off the coast the BP dataset has better agreement with buoy’s wave heights than the SGDR MLE4 dataset in terms of the BP’s small absolute biases and STDs, as well as high correlation coefficients.http://www.mdpi.com/2072-4292/10/7/1072satellite altimetryBrown-Peaky retrackersignificant wave heightwaverider buoyvalidationAustralia |
| spellingShingle | Fukai Peng Xiaoli Deng Validation of Improved Significant Wave Heights from the Brown-Peaky (BP) Retracker along the East Coast of Australia Remote Sensing satellite altimetry Brown-Peaky retracker significant wave height waverider buoy validation Australia |
| title | Validation of Improved Significant Wave Heights from the Brown-Peaky (BP) Retracker along the East Coast of Australia |
| title_full | Validation of Improved Significant Wave Heights from the Brown-Peaky (BP) Retracker along the East Coast of Australia |
| title_fullStr | Validation of Improved Significant Wave Heights from the Brown-Peaky (BP) Retracker along the East Coast of Australia |
| title_full_unstemmed | Validation of Improved Significant Wave Heights from the Brown-Peaky (BP) Retracker along the East Coast of Australia |
| title_short | Validation of Improved Significant Wave Heights from the Brown-Peaky (BP) Retracker along the East Coast of Australia |
| title_sort | validation of improved significant wave heights from the brown peaky bp retracker along the east coast of australia |
| topic | satellite altimetry Brown-Peaky retracker significant wave height waverider buoy validation Australia |
| url | http://www.mdpi.com/2072-4292/10/7/1072 |
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