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Implementation of GPS-RO data processing system for data assimilation

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dc.contributor.authorKwon, Hataek-
dc.contributor.authorKang, Ji-Sun-
dc.contributor.authorJo, Youngsoon-
dc.contributor.authorKang, Jeon-Ho-
dc.date.accessioned2017-08-03T12:51:32Z-
dc.date.available2017-08-03T12:51:32Z-
dc.date.issued2015-
dc.description.abstractThe data preprocessing and quality control modules for bending angle measurements of global positioning system radio occultation (GPS-RO) have been implemented and examined. GPS-RO data processing system is composed of several steps for checking observation locations, missing values, physical values for Earth radius of curvature, and geoid undulation. An observation-minus-background check is implemented by use of a one-dimensional observational bending angle operator and tangent point drift is also considered in the quality control process. We have tested GPS-RO observations utilized by the Korean Meteorological Administration (KMA), based on both the KMA global model and the National Center for Atmospheric Research (NCAR) Community Atmosphere Model-Spectral Element (CAM-SE) as a model background. Background fields from the CAM-SE model are incorporated for the preparation of assimilation experiments with LETKF data assimilation system, which has been successfully implemented to a cubed-sphere model with fully unstructured quadrilateral meshes. As a result of data processing, the bending angle departure statistics between observation and background shows significant improvement. Also, the first experiment in assimilating GPS-RO bending angle within LETKF data assimilation system shows encouraging results.-
dc.languageEnglish-
dc.titleImplementation of GPS-RO data processing system for data assimilation-
dc.typeProceeding-
dc.identifier.bibliographicCitationKwon, Hataek, et al. 2015. Implementation of GPS-RO data processing system for data assimilation. 4th International Radio Occultation Working Group Workshop. Melbourne. 2015.04.16.-22.-
dc.citation.conferenceDate2015.04.16.-22-
dc.citation.conferenceName4th International Radio Occultation Working Group Workshop-
dc.citation.conferencePlaceMelbourne-
dc.subject.keywordData Assimilation-
dc.subject.keywordGPS-RO bending angle-
dc.subject.keywordQuality control-
Appears in Collections  
2015-2016, Study of the Upper and Lower Atmosphere Coupling Through 4-Dimensional Observations for The Northern Polar Atmosphere: Polar Upper Atmospheric and Space Environmental Changes (15-16) / Jee; Geonhwa (PE15090; PE16090)
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