NWP, Ocean and Other Application Benefits of the Virtual Scatterometer Constellation
2021 EUMETSAT Meteorological Satellite Conference, 20-24 September 2021, Bucharest, Romania
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2021-09-23
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| Online Access: | http://hdl.handle.net/10261/257835 |
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2021 EUMETSAT Meteorological Satellite Conference, 20-24 September 2021, Bucharest, Romania |
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comunicación de congreso |
| author |
Stoffelen, Ad Verhoef, Anton Verspeek, Jeroen Vogelzang, J. Portabella, Marcos Trindade, Ana Wang, Zhixiong de Chiara, Giovanna Payan, Christophe Dhomps, Anne-Lise Cress, Alexander Cotton, James Brocca, Luca Long, David Monteiro, Isabel |
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Stoffelen, Ad Verhoef, Anton Verspeek, Jeroen Vogelzang, J. Portabella, Marcos Trindade, Ana Wang, Zhixiong de Chiara, Giovanna Payan, Christophe Dhomps, Anne-Lise Cress, Alexander Cotton, James Brocca, Luca Long, David Monteiro, Isabel NWP, Ocean and Other Application Benefits of the Virtual Scatterometer Constellation |
| author_facet |
Stoffelen, Ad Verhoef, Anton Verspeek, Jeroen Vogelzang, J. Portabella, Marcos Trindade, Ana Wang, Zhixiong de Chiara, Giovanna Payan, Christophe Dhomps, Anne-Lise Cress, Alexander Cotton, James Brocca, Luca Long, David Monteiro, Isabel |
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Stoffelen, Ad |
| title |
NWP, Ocean and Other Application Benefits of the Virtual Scatterometer Constellation |
| title_short |
NWP, Ocean and Other Application Benefits of the Virtual Scatterometer Constellation |
| title_full |
NWP, Ocean and Other Application Benefits of the Virtual Scatterometer Constellation |
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NWP, Ocean and Other Application Benefits of the Virtual Scatterometer Constellation |
| title_full_unstemmed |
NWP, Ocean and Other Application Benefits of the Virtual Scatterometer Constellation |
| title_sort |
nwp, ocean and other application benefits of the virtual scatterometer constellation |
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2021-09-23 |
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http://hdl.handle.net/10261/257835 |
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dig-icm-es-10261-2578352022-01-14T09:13:42Z NWP, Ocean and Other Application Benefits of the Virtual Scatterometer Constellation Stoffelen, Ad Verhoef, Anton Verspeek, Jeroen Vogelzang, J. Portabella, Marcos Trindade, Ana Wang, Zhixiong de Chiara, Giovanna Payan, Christophe Dhomps, Anne-Lise Cress, Alexander Cotton, James Brocca, Luca Long, David Monteiro, Isabel 2021 EUMETSAT Meteorological Satellite Conference, 20-24 September 2021, Bucharest, Romania The prime ocean vector winds user requirement is enhanced temporal coverage for the tracking of mesoscale transient features and resolving coastal air-sea breezes and their diurnal cycle. Hence, collaboration and cooperation between Europe, India and China is ongoing to elaborate our OSI SAF plans to develop high-quality services and applications, while the global virtual constellation of wind scatterometers is being extended, in order to benefit world-wide users. Besides the comprehensive and versatile quality monitoring by the wind data providers, extended quality monitoring has been performed by the Numerical Weather Prediction (NWP) centres, before relying on data assimilation techniques to improve the initial model state of the forecast model by using the actual constellation scatterometer winds. For example, first Observing System Experiments (OSE) at several European NWP centres show neutral to positive forecast impact by assimilating HY-2B winds processed by KNMI. These new winds, measured at 6:00 and 18:00 Local Solar Time (LST) are furthermore much welcomed by the marine nowcasting professionals to complement the current virtual constellation of wind scatterometer data at 8:45/20:45 and 9:30/21:30 LST from ScatSat and ASCAT-A/B/C, respectively. Later in 2021, more scatterometer systems measuring at different local times will be added (OceanSat-3 from ISRO at 12:00/0:00 LST, CMA WindRad at 6:00/18:00 LST and HY-2C at varying LST). Ground station extension is much welcomed for the European marine nowcasting and NWP applications. Access to more timely constellation winds is the single achievable requirement by our users that would bring most benefit. Concerning ocean model forcing, the HY2 data has been used to verify a new blended scatterometer and NWP wind product that exploits the virtual wind scatterometer constellation in more detail by extracting and isolating the global wind structures associated with the air-sea interface, but that are not resolved in (ocean-coupled) global NWP. The resulting improved ocean forcing and NWP bias product may be extended, inter alia, to include the information brought by the HY2 scatterometers. In particular, the sun-asynchronous HY-2C wind data would be invaluable to further develop this product. The extracted structures are stable in time and may be used to allow Best Linear Unbiased Estimation in NWP data assimilation. The bias correction structures reduce the so-called o-b variance by 20%, which is enormous and should in principle much enhance the benefits of scatterometer wind data assimilation in NWP. This remains to be tested, however. Preliminary work on using the HY-2B scatterometer backscatter data for soil moisture and accumulated rain observation over land has commenced, indicating the potential of such development. A virtual constellation is further very useful for the assessment of accumulated rain as more observations per day will become available at each ground pixel. It goes without saying that an accumulated rain product, based on land backscatter measurements is highly complementary to rain products based on microwave rain cloud measurements, as the latter cannot track the fast moist convection processes and its associated rain, while the accumulated rain acts more like a rain gauge, where all rain is collected in the measured soil wetness. In summary, the virtual constellation of wind scatterometers has already contributed to relevant processing, monitoring and application developments over sea, land and ice, where further NWP and more general application benefits are expected with the further ongoing extension of the constellation and its applications 2022-01-14T09:10:03Z 2022-01-14T09:10:03Z 2021-09-23 2022-01-14T09:10:03Z comunicación de congreso http://purl.org/coar/resource_type/c_5794 2021 EUMETSAT Meteorological Satellite Conference (2021) http://hdl.handle.net/10261/257835 Sí none |