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GNSS-RO Sounding in the Troposphere and Stratosphere
2022The use of Global Navigation Satellite System Radio Occultations (GNSS-RO) for vertical sounding of temperature and moisture in the atmospheric column has become a standard practice of many numerical weather prediction (NWP) centers. The introduction of this observation has seen broad positive impact on analyses and forecasts.
Benjamin Ruston +3 more
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Atmospheric Sensing Using GNSS RO
2013In this chapter, the basic methodology to derive the geophysical parameters from GNSS RO refractivity will be explored in Sect. 6.1. In the following Sect. 6.2, the detailed characteristics of RO observables will be studied. The science application utilizing such RO derived geophysical parameters, spanning from atmospheric dynamic process to weather ...
Shuanggen Jin +2 more
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Ionospheric Sounding Using GNSS-RO
2013The GNSS signal will be bent from GNSS transmitters and LEO satellites when the signal goes through Earth’s ionosphere. With the improvement of GNSS-RO technique and more GNSS-RO missions, ionospheric parameters can be retrieved, including TEC and ionospheric electron density.
Shuanggen Jin +2 more
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Revised GNSS‐RO observation uncertainties in the Met Office NWP system
Quarterly Journal of the Royal Meteorological Society, 2020AbstractThe diagnostics of Desroziers et al. have been used to estimate the uncertainties of Global Navigation Satellite System Radio Occultation (GNSS‐RO) observations. Compared with the uncertainties that are currently operational, the new uncertainties are smaller and vary with height, latitude, satellite identifier, and other variables. The initial
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Development of GNSS-RO and EDTP sensors onboard microsatellite for ionosphere monitoring
2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015Chiba University develops two microsatellites called GAIA-I and GAIA-II. GAIA-I payload is GNSS Radio Occultation (RO) sensor and Electron Density — Temperature Probe (EDTP) for Ionosphere monitoring, and GAIA-II payload is Circularly Polarized Synthetic Aperture Radar (CP-SAR) for global land deformation monitoring.
Josaphat Tetuko Sri Sumantyo +1 more
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Technical Note on Quality Assessment for SPIRE GNSS-RO
In this study the quality assessment of SPIRE GNSS-RO atmopsheric data (pressure and temperature profiles) are presented. Measurements are acquired by STRATOS paylod that makes use of GPS occultation measurements to determine temperature,pressure and humidity profiles of Earth's atmosphere for application in operationalmeteorology.The instrument ...Piro, Alessandro, Albinet, Clement
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The diurnal cycle of gravity waves in GNSS-RO data
Gravity wave sources such as convection are known to have a diurnal cycle, so it is expected that gravity waves should also follow a diurnal cycle. However, although this cycle can be simulated in models and observed in ground based data at fixed locations, it is difficult to observe in global satellite observations, due to their low time resolution ...Emily Lear, Corwin Wright, Neil Hindley
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Can the Spire GNSS-RO CubeSats Constellation Observe Earth's Gravity Field?
Dual-frequency GNSS data from onboard Precise Orbit Determination (POD) antennas has emerged as a promising tool for investigating the time-variable components of Earth's gravity field. Over the past two decades, POD antennas onboard Low Earth Orbit (LEO) satellites have significantly advanced the study of the long-wavelength components of Earth's ...Parisa Shafiei, Sajad Tabibi
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COSMIC-2: The future of global navigation satellite system - remote observation (GNSS-RO) sensing
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010COSMIC is a joint U.S.-Taiwan 6-microsatellite demonstration mission that was launched in April 2006. It is the world's first operational GPS radio occultation (RO) mission for global Earth weather forecast; climate monitoring; atmospheric, ionospheric, and geodetic research.
Kendra Cook, Peter Wilczynski
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IEEE Transactions on Geoscience and Remote Sensing, 2018
Global Navigation Satellite System (GNSS) radio occultation (RO) has been widely used in the prediction of weather, climate, and space weather, particularly in the area of tropospheric analyses. However, one of the issues with GNSS RO measurements is that they are interfered with by the signals reflected from the earth’s surface.
Andong Hu +7 more
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Global Navigation Satellite System (GNSS) radio occultation (RO) has been widely used in the prediction of weather, climate, and space weather, particularly in the area of tropospheric analyses. However, one of the issues with GNSS RO measurements is that they are interfered with by the signals reflected from the earth’s surface.
Andong Hu +7 more
openaire +1 more source