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A GNSS-R forward model for delay-Doppler map assimilation
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2018
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Source: International Geoscience and Remote Sensing Symposium
[PDF-480.23 KB]
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Journal Title:International Geoscience and Remote Sensing Symposium
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Description:The Cyclone Global Navigation Satellite System (CYGNSS) constellation was launched for the purpose of improving tropical cyclone forecasts using GNSS Refiectometry (GNSS-R). CYGNSS wind speed estimates have been based on only a small window of the Delay-Doppler Maps (DDM) due to the resolution requirement. Direct assimilation of DDM data into a forecast model is an alternative approach, that could take advantage of contribution to the DDM from regions on the ocean away from the specular point. This paper will present a generalized forward model for assimilation of DDMs into a weather model. The forward operator and Jacobian matrix are derived and structured for use in data assimilation systems. The model has also been assessed using CYGNSS Level 1 data from the 2017 Hurricane season.
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Source:International Geoscience and Remote Sensing Symposium
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ISBN:978-1-5386-7150-4;978-1-5386-7149-8;978-1-5386-7151-1;
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ISSN:2153-7003;2153-6996;
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Rights Information:Accepted Manuscript
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Compliance:Submitted
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