Results 21 to 30 of about 333 (162)
Assessment of Interpolation Errors of CYGNSS Soil Moisture Estimations
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 High spatiotemporal soil moisture (SM) is essential for many meteorological, hydrological, and agricultural applications and studies. Spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R) provides a promising opportunity for high ...
Volkan Senyurek +2 more
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First Measurement of Soil Freeze/Thaw Cycles in the Tibetan Plateau Using CYGNSS GNSS-R Data
Remote Sensing, 2020 The process of soil freezing and thawing refers to the alternating phase change of liquid water and solid water in the soil, accompanied by a large amount of latent heat exchange.
Xuerui Wu +6 more
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Response to Variations in River Flowrate by a Spaceborne GNSS-R River Width Estimator
Remote Sensing, 2019 In recent years, the use of Global Navigation Satellite System-Reflectometry (GNSS-R) for remote sensing of the Earth’s surface has gained momentum as a means to exploit existing spaceborne microwave navigation systems for science-related ...
April Warnock, Christopher Ruf
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Geophysical Research Letters, 2018 Using the first full annual cycle of Cyclone Global Navigation Satellite System (CyGNSS) observations, we investigated the limitations and capabilities of CyGNSS observations for soil moisture (SM) estimates (0–5 cm).
Hyunglok Kim, Venkat Lakshmi
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Comparing Winds near Tropical Oceanic Precipitation Systems with and without Lightning
Remote Sensing, 2020 In order to examine how robust updraft strength and ice-based microphysical processes aloft in storms may affect convective outflows near the surface, ocean winds were compared between tropical maritime precipitation systems with and without lightning ...
Timothy J. Lang
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Tropical Cyclone Center Fix Using CYGNSS Winds [PDF]
Journal of Applied Meteorology and Climatology, 2019 AbstractA new method is described for determining the center location of a tropical cyclone (TC) using wind speed measurements by the NASA Cyclone Global Navigation Satellite System (CYGNSS). CYGNSS measurements made during TC overpasses are used to constrain a parametric wind speed model in which storm center location is varied.
David Mayers, Christopher Ruf
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Desert Roughness Retrieval Using CYGNSS GNSS-R Data [PDF]
2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021 The aim of this study is to assess the potential use of data recorded by the Global Navigation Satellite System Reflectometry (GNSS-R) CYGNSS constellation to characterize desert surface roughness. The study is applied over the Sahara, the largest non-polar desert in the world. This is based on a spatio-temporal analysis of variations in Cyclone Global
Zribi, Mehrez +2 more
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First Evidence of Mesoscale Ocean Eddies Signature in GNSS Reflectometry Measurements
Remote Sensing, 2020 Feasibility of sensing mesoscale ocean eddies using spaceborne Global Navigation Satellite Systems-Reflectometry (GNSS-R) measurements is demonstrated for the first time.
Mostafa Hoseini +5 more
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An Assessment of CyGNSS v3.0 Level 1 Observables over the Ocean
Remote Sensing, 2021 Global Navigation Satellite System Reflectometry (GNSS-R) is a rapidly developing Earth observation technology that makes use of signals of opportunity from Global Navigation Satellite Systems that have been reflected off the Earth’s surface. The Cyclone
Matthew Lee Hammond +3 more
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Exploring CYGNSS mission for surface heat flux estimates and analysis over tropical oceans
Frontiers in Marine Science, 2022 The Cyclone Global Navigation Satellite System (CYGNSS) mission can measure sea surface wind over tropical oceans with unprecedented temporal resolution and spatial coverage, so as to estimate surface latent and sensible heat fluxes (LHF and SHF).
Xiaohui Li +6 more
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