Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water Conditions
Verification of the C-band geophysical model functions (GMF) for the open ocean and the Gorky reservoir was carried out using Sentinel-1 IW-mode Synthetic aperture radar (SAR) images. CMOD5.N, CMOD7, GMF for the Caspian Sea, and CSARMOD2 were considered. The motivation for this study is concerned wi...
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MDPI AG
2023-11-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/13/12/361 |
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| author | Daniil Sergeev Olga Ermakova Nikita Rusakov Evgeny Poplavsky Daria Gladskikh |
| author_facet | Daniil Sergeev Olga Ermakova Nikita Rusakov Evgeny Poplavsky Daria Gladskikh |
| author_sort | Daniil Sergeev |
| collection | DOAJ |
| description | Verification of the C-band geophysical model functions (GMF) for the open ocean and the Gorky reservoir was carried out using Sentinel-1 IW-mode Synthetic aperture radar (SAR) images. CMOD5.N, CMOD7, GMF for the Caspian Sea, and CSARMOD2 were considered. The motivation for this study is concerned with the clarification of applying C-band GMFs for SAR images including for the conditions of inland water bodies, as well as with the study of the influence of various wind speed direction sources on the results of wind speed magnitude retrieval for ocean conditions. Comparison of wind speed from the CMOD5.N algorithm using wind direction data from NOAA NDBC oceanographic buoys together with the data provided by NCEP reanalysis data showed that regardless of the geographic location, the result does not depend significantly on the choice of the wind direction source. Novel results of CMOD5.N, CMOD7, GMF for the Caspian Sea, and CSARMOD2 applications to the conditions of the Gorky reservoir are presented. The comparison of these results with the meteorological station measurements showed the best agreement for CMOD5.N. The preliminary results on the construction of new C-band GMF adjusted to the Gorky Reservoir have shown statistical parameters better than for Caspian Sea GMF and CSARMOD2. |
| first_indexed | 2024-03-08T20:44:18Z |
| format | Article |
| id | doaj.art-f2a7884fffaf4180b957155fb001e1eb |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-08T20:44:18Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-f2a7884fffaf4180b957155fb001e1eb2023-12-22T14:11:34ZengMDPI AGGeosciences2076-32632023-11-01131236110.3390/geosciences13120361Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water ConditionsDaniil Sergeev0Olga Ermakova1Nikita Rusakov2Evgeny Poplavsky3Daria Gladskikh4Federal Research Center Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), 603950 Nizhny Novgorod, RussiaFederal Research Center Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), 603950 Nizhny Novgorod, RussiaFederal Research Center Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), 603950 Nizhny Novgorod, RussiaFederal Research Center Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), 603950 Nizhny Novgorod, RussiaFederal Research Center Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), 603950 Nizhny Novgorod, RussiaVerification of the C-band geophysical model functions (GMF) for the open ocean and the Gorky reservoir was carried out using Sentinel-1 IW-mode Synthetic aperture radar (SAR) images. CMOD5.N, CMOD7, GMF for the Caspian Sea, and CSARMOD2 were considered. The motivation for this study is concerned with the clarification of applying C-band GMFs for SAR images including for the conditions of inland water bodies, as well as with the study of the influence of various wind speed direction sources on the results of wind speed magnitude retrieval for ocean conditions. Comparison of wind speed from the CMOD5.N algorithm using wind direction data from NOAA NDBC oceanographic buoys together with the data provided by NCEP reanalysis data showed that regardless of the geographic location, the result does not depend significantly on the choice of the wind direction source. Novel results of CMOD5.N, CMOD7, GMF for the Caspian Sea, and CSARMOD2 applications to the conditions of the Gorky reservoir are presented. The comparison of these results with the meteorological station measurements showed the best agreement for CMOD5.N. The preliminary results on the construction of new C-band GMF adjusted to the Gorky Reservoir have shown statistical parameters better than for Caspian Sea GMF and CSARMOD2.https://www.mdpi.com/2076-3263/13/12/361inland watersSAR imageSentinel-1 satellitegeophysical model functionoceanographic buoy |
| spellingShingle | Daniil Sergeev Olga Ermakova Nikita Rusakov Evgeny Poplavsky Daria Gladskikh Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water Conditions Geosciences inland waters SAR image Sentinel-1 satellite geophysical model function oceanographic buoy |
| title | Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water Conditions |
| title_full | Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water Conditions |
| title_fullStr | Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water Conditions |
| title_full_unstemmed | Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water Conditions |
| title_short | Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water Conditions |
| title_sort | verification of c band geophysical model function for wind speed retrieval in the open ocean and inland water conditions |
| topic | inland waters SAR image Sentinel-1 satellite geophysical model function oceanographic buoy |
| url | https://www.mdpi.com/2076-3263/13/12/361 |
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