Results 11 to 20 of about 1,044 (196)
Assessment of CYGNSS Wind Speed Retrievals in Tropical Cyclones [PDF]
Remote Sensing, 2021 The NASA CYGNSS satellite constellation measures ocean surface winds using the existing network of the Global Navigation Satellite System (GNSS) and was designed for measurements in tropical cyclones (TCs).
Thomas Meissner +2 more
exaly +5 more sources
INTRODUCING THE GLOBAL MAPPING OF FLOOD DYNAMICS USING GNSS-REFLECTOMETRY AND THE CYGNSS MISSION [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 This study uses the observations from the Cyclone GNSS (CYGNSS) mission to analyze their potential for a global mapping of the floods dynamics in the pan-tropical area using Global Navigation Satellite System (GNSS) Reflectometry (GNSS-R).
P. Zeiger, F. Frappart, J. Darrozes
doaj +2 more sources
Remote Sensing, 2023 Drought monitoring is crucial for various sectors, and soil moisture data play a pivotal role, especially in agricultural contexts. This study focuses on the recent CYGNSS Level 3 soil moisture data derived from the NASA Cyclone Global Navigation ...
Zhaolu Hou, Zhaoxia Pu
doaj +2 more sources
Downscaling SMAP Brightness Temperatures to 3 km Using CYGNSS Reflectivity Observations: Factors That Affect Spatial Heterogeneity [PDF]
Remote Sensing, 2022 NASA’s Soil Moisture Active Passive (SMAP) mission only retrieved ~2.5 months of 3 km near surface soil moisture (NSSM) before its radar transmitter malfunctioned. NSSM remains an important area of study, and multiple applications would benefit from 3 km
Liza J. Wernicke +3 more
doaj +2 more sources
Use of an End-to-End-Simulator to Analyze CYGNSS. [PDF]
J Atmos Ocean Technol, 2018 AbstractTropical convection during the onset of two Madden–Julian oscillation (MJO) events, in October and December of 2011, was simulated using the Weather Research and Forecasting (WRF) Model. Observations from the Dynamics of the MJO (DYNAMO) field campaign were assimilated into the WRF Model for an improved simulation of the mesoscale features of ...
Hoover KE +5 more
europepmc +5 more sources
Validation of NOAA CyGNSS Wind Speed Product with the CCMP Data
Remote Sensing, 2021 The National Aeronautics and Space Administration (NASA) Cyclone Global Navigation Satellite System (CyGNSS) mission was launched in December 2016, which can remotely sense sea surface wind with a relatively high spatio-temporal resolution for tracking ...
Xiaohui Li +5 more
doaj +2 more sources
Remote Sensing, 2022 This study examines the impacts of assimilating ocean-surface winds derived from the NASA Cyclone Global Navigation Satellite System (CYGNSS) on improving the short-range numerical simulations and forecasts of landfalling hurricanes using the NCEP ...
Zhaoxia Pu +5 more
doaj +2 more sources
Assessing the Altimetric Measurement from CYGNSS Data
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018 The Cyclone Global Navigation Satellite System (CYGNSS) mission was designed to study hurricane intensification by measuring wind speeds in tropical cyclones. However, the delay-Doppler maps (DDM) that are produced can be used to estimate the sea surface height (SSH) at the specular reflection point on the ocean surface.
Cinzia Zuffada +11 more
openaire +4 more sources
Wind Speed Estimation From CYGNSS Using Artificial Neural Networks
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 In this article, a retrieval algorithm based on the use of an artificial neural network (ANN) is proposed for wind speed estimations from cyclone global navigation satellite system (CYGNSS).
Jennifer Reynolds +2 more
doaj +2 more sources
CYGNSS Surface Heat Flux Product Development [PDF]
Remote Sensing, 2019 Ocean surface heat fluxes play a significant role in the genesis and evolution of various marine-based atmospheric phenomena, from the synoptic scale down to the microscale. While in-situ measurements from buoys and flux towers will continue to be the standard in regards to surface heat flux estimates, they commonly have significant gaps in temporal ...
Juan A. Crespo +2 more
openaire +4 more sources