Ensuring that the Sentinel-3A altimeter provides climate-quality data
Sentinel-3A, launched in February 2016, is part of ESA's long-term commitment to climate monitoring from space. Its suite of instruments for measuring surface topography includes a Microwave Radiometer (MWR) and SRAL, the first delay-Doppler instrument to provide global coverage. SRAL promises...
Published in: | Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017 |
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Online Access: | http://plymsea.ac.uk/id/eprint/7576/ https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10422/2277593/Ensuring-that-the-Sentinel-3A-altimeter-provides-climate-quality-data/10.1117/12.2277593.short https://doi.org/10.1117/12.2277593 |
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ftplymouthml:oai:plymsea.ac.uk:7576 2023-05-15T18:18:40+02:00 Ensuring that the Sentinel-3A altimeter provides climate-quality data Quartly, GD Nencioli, F Labroue, S Féménias, P Scharroo, R Abdalla, S Bonnefond, P Cancet, M Frery, ML Raynal, M Baker, S Muir, A Brockley, D Shepherd, A Garcia, P Roca, M Calmant, S Cretaux, JF 2017-10-03 http://plymsea.ac.uk/id/eprint/7576/ https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10422/2277593/Ensuring-that-the-Sentinel-3A-altimeter-provides-climate-quality-data/10.1117/12.2277593.short https://doi.org/10.1117/12.2277593 unknown SPIE Quartly, GD; Nencioli, F; Labroue, S; Féménias, P; Scharroo, R; Abdalla, S; Bonnefond, P; Cancet, M; Frery, ML; Raynal, M; Baker, S; Muir, A; Brockley, D; Shepherd, A; Garcia, P; Roca, M; Calmant, S; Cretaux, JF. 2017 Ensuring that the Sentinel-3A altimeter provides climate-quality data. Proc. of SPIE Remote Sensing 2017, 10422, 104220R. 16, pp. https://doi.org/10.1117/12.2277593 <https://doi.org/10.1117/12.2277593> Earth Observation - Remote Sensing Oceanography Publication - Article NonPeerReviewed 2017 ftplymouthml https://doi.org/10.1117/12.2277593 2022-09-13T05:49:04Z Sentinel-3A, launched in February 2016, is part of ESA's long-term commitment to climate monitoring from space. Its suite of instruments for measuring surface topography includes a Microwave Radiometer (MWR) and SRAL, the first delay-Doppler instrument to provide global coverage. SRAL promises fine spatial resolution and reduced noise levels that should together lead to improved performance over all Earth surfaces. The Sentinel-3 Mission Performance Centre (S3MPC) has been developing the methodology to evaluate the accuracy of retrievals, monitor any changes and develop solutions to known problems. The S3MPC monitors internal temperatures, path delays and the shape of the generated pulses to assess the instruments health. The MWR records over known reference surfaces are compared with those from other spaceborne instruments. Over the ocean the SRAL's return pulses are analysed to give range to the sea surface, wave height and signal strength (which can be interpreted as wind speed). The metocean data are regularly contrasted with records from in situ measurements and the output from meteorological models, which rapidly highlights the effects of any changes in processing. Range information is used to give surface elevation, which is assessed in three ways. First, flights over a dedicated radar transponder provide an estimate of path delay to within ~10 mm (r.m.s.). Second, measurements are compared to GPS- levelled surfaces near Corsica and over Lake Issyk-kul. Third, there are consistency checks between ascending and descending passes and with other missions. Further waveform analysis techniques are being developed to improve the retrieval of information over sea-ice, land-ice and inland waters. Article in Journal/Newspaper Sea ice Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) The Sentinel ENVELOPE(73.317,73.317,-52.983,-52.983) Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017 30 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
unknown |
topic |
Earth Observation - Remote Sensing Oceanography |
spellingShingle |
Earth Observation - Remote Sensing Oceanography Quartly, GD Nencioli, F Labroue, S Féménias, P Scharroo, R Abdalla, S Bonnefond, P Cancet, M Frery, ML Raynal, M Baker, S Muir, A Brockley, D Shepherd, A Garcia, P Roca, M Calmant, S Cretaux, JF Ensuring that the Sentinel-3A altimeter provides climate-quality data |
topic_facet |
Earth Observation - Remote Sensing Oceanography |
description |
Sentinel-3A, launched in February 2016, is part of ESA's long-term commitment to climate monitoring from space. Its suite of instruments for measuring surface topography includes a Microwave Radiometer (MWR) and SRAL, the first delay-Doppler instrument to provide global coverage. SRAL promises fine spatial resolution and reduced noise levels that should together lead to improved performance over all Earth surfaces. The Sentinel-3 Mission Performance Centre (S3MPC) has been developing the methodology to evaluate the accuracy of retrievals, monitor any changes and develop solutions to known problems. The S3MPC monitors internal temperatures, path delays and the shape of the generated pulses to assess the instruments health. The MWR records over known reference surfaces are compared with those from other spaceborne instruments. Over the ocean the SRAL's return pulses are analysed to give range to the sea surface, wave height and signal strength (which can be interpreted as wind speed). The metocean data are regularly contrasted with records from in situ measurements and the output from meteorological models, which rapidly highlights the effects of any changes in processing. Range information is used to give surface elevation, which is assessed in three ways. First, flights over a dedicated radar transponder provide an estimate of path delay to within ~10 mm (r.m.s.). Second, measurements are compared to GPS- levelled surfaces near Corsica and over Lake Issyk-kul. Third, there are consistency checks between ascending and descending passes and with other missions. Further waveform analysis techniques are being developed to improve the retrieval of information over sea-ice, land-ice and inland waters. |
format |
Article in Journal/Newspaper |
author |
Quartly, GD Nencioli, F Labroue, S Féménias, P Scharroo, R Abdalla, S Bonnefond, P Cancet, M Frery, ML Raynal, M Baker, S Muir, A Brockley, D Shepherd, A Garcia, P Roca, M Calmant, S Cretaux, JF |
author_facet |
Quartly, GD Nencioli, F Labroue, S Féménias, P Scharroo, R Abdalla, S Bonnefond, P Cancet, M Frery, ML Raynal, M Baker, S Muir, A Brockley, D Shepherd, A Garcia, P Roca, M Calmant, S Cretaux, JF |
author_sort |
Quartly, GD |
title |
Ensuring that the Sentinel-3A altimeter provides climate-quality data |
title_short |
Ensuring that the Sentinel-3A altimeter provides climate-quality data |
title_full |
Ensuring that the Sentinel-3A altimeter provides climate-quality data |
title_fullStr |
Ensuring that the Sentinel-3A altimeter provides climate-quality data |
title_full_unstemmed |
Ensuring that the Sentinel-3A altimeter provides climate-quality data |
title_sort |
ensuring that the sentinel-3a altimeter provides climate-quality data |
publisher |
SPIE |
publishDate |
2017 |
url |
http://plymsea.ac.uk/id/eprint/7576/ https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10422/2277593/Ensuring-that-the-Sentinel-3A-altimeter-provides-climate-quality-data/10.1117/12.2277593.short https://doi.org/10.1117/12.2277593 |
long_lat |
ENVELOPE(73.317,73.317,-52.983,-52.983) |
geographic |
The Sentinel |
geographic_facet |
The Sentinel |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
Quartly, GD; Nencioli, F; Labroue, S; Féménias, P; Scharroo, R; Abdalla, S; Bonnefond, P; Cancet, M; Frery, ML; Raynal, M; Baker, S; Muir, A; Brockley, D; Shepherd, A; Garcia, P; Roca, M; Calmant, S; Cretaux, JF. 2017 Ensuring that the Sentinel-3A altimeter provides climate-quality data. Proc. of SPIE Remote Sensing 2017, 10422, 104220R. 16, pp. https://doi.org/10.1117/12.2277593 <https://doi.org/10.1117/12.2277593> |
op_doi |
https://doi.org/10.1117/12.2277593 |
container_title |
Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017 |
container_start_page |
30 |
_version_ |
1766195325385572352 |