Results 51 to 60 of about 1,130 (254)
Meteorological Applications, 2022 Changes in the tropopause can explain regional and global weather and climate. In Tibet, there are few radiosonde stations, and the detection height is not high enough.
Guangwei Jiang +5 more
doaj +1 more source
Performance assessment of radio occultation data from GeoOptics by comparing with COSMIC data
Earth, Planets and Space, 2022 Responding to the ever-growing demand for environmental information, the National Oceanic and Atmospheric Administration (NOAA) seeks to enter into contracts to purchase Global Navigation Satellite System (GNSS) radio occultation (RO) observations ...
Hyeyeon Chang +4 more
doaj +1 more source
2023 XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2023 Besides providing electron density profiles (EDP), GNSS Radio Occultation (GNSS-RO) measurements allow monitoring the frequency and the areas where ionospheric scintillations occur. In this work, RO measurements composing an experimental data set are processed with the back propagation (BP) method to estimate the location of sporadic E-clouds and ...
Ludwig Barbosa, Vinícius +5 more
openaire +2 more sources
A Machine Learning-Based Method for Wind Fields Forecasting Utilizing GNSS Radio Occultation Data
IEEE Access, 2022 With the development of computer technology and expanding environmental issues, machine learning has received more and more attention in the field of weather forecasting.
Xuezhao Chu +5 more
doaj +1 more source
Radiometer Calibration Using Colocated GPS Radio Occultation Measurements [PDF]
, 2013 We present a new high-fidelity method of calibrating a cross-track scanning microwave radiometer using Global Positioning System (GPS) radio occultation (GPSRO) measurements.
Bishop, Rebecca +13 more
core +1 more source
Supervised Detection of Ionospheric Scintillation in Low-Latitude Radio Occultation Measurements
Remote Sensing, 2021 Global Navigation Satellite System (GNSS) Radio Occultation (RO) has provided high-quality atmospheric data assimilated in Numerical Weather Prediction (NWP) models and climatology studies for more than 20 years.
Vinícius Ludwig-Barbosa +5 more
doaj +1 more source
Ionospheric scintillations studies using Spire and COSMIC-2 radio occultation and GOLD satellite data [PDF]
, 2023 Low-earth orbits (LEO) satellites have been harnessing the concept of GNSS radio occultation (RO) for several atmospheric applications. With the advent of CubeSat technology, many space companies are now extending the GNSS-RO for ionospheric and space ...
Hoque, Mohammed Mainul, Mohanty, Shradha
core +1 more source
Remote SensingGlobal Navigation Satellite System (GNSS) Radio Occultation (RO) and GNSS Reflectometry (GNSS-R) are the two major spaceborne GNSS remote sensing (GNSS-RS) techniques, providing observations of atmospheric profiles and the Earth’s surface. With the rapid
Weihua Bai +11 more
doaj +1 more source
Correcting negatively biased refractivity below ducts in GNSS radio occultation: an optimal estimation approach towards improving planetary boundary layer (PBL) characterization [PDF]
Atmospheric Measurement Techniques, 2017 Global Navigation Satellite System (GNSS) radio occultation (RO) measurements are promising in sensing the vertical structure of the Earth's planetary boundary layer (PBL).
K.-N. Wang +3 more
doaj +1 more source
Assessment of GRAS Ionospheric Measurements for Ionospheric Model Assimilation
Remote Sensing, 2023 We conducted a study to assess the GNSS (Global Navigation Satellite System) Receiver for Atmospheric Sounding (GRAS) ionospheric data quality by processing Radio Occultation (RO) observations of ionospheric products.
M. M. Hoque +8 more
doaj +1 more source