Results 81 to 90 of about 2,145,064 (260)
Remote Sensing, 2021 The meteorological reanalysis data has been widely applied to derive zenith tropospheric delay (ZTD) with a high spatial and temporal resolution. With the rapid development of artificial intelligence, machine learning also begins as a high-efficiency ...
Song Li +5 more
semanticscholar +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.State‐of‐the‐art, convection‐permitting NWP models reproduced the main features of the October 22–23, 2019 heavy precipitation event in Catalonia. However, slight configuration changes yielded varying streamflow responses and statistical performance, highlighting the challenge of simulating these events in Mediterranean medium‐sized basins ...
D. Ramonell +3 more
wiley +1 more source
From Reference Frames to Relativistic Experiments: Absolute and Relative Radio Astrometry
, 2004 Reference systems and frames are crucial for high precision absolute astrometric work, and their foundations must be well-defined. The current frame, the International Celestial Reference Frame, will be discussed: its history, the use of the group delay ...
Fomalont, E. B.
core +2 more sources
An ERA5 tropospheric parameters-augmented approach for improving GNSS precise point positioning
Geodesy and Geodynamics, 2023 Precise Point Positioning (PPP) technology has developed into a potent instrument for geodetic positioning, ionospheric modeling, tropospheric atmospheric parameter detection, and seismic monitoring.
Liangke Huang +6 more
doaj +1 more source
An anatomy of fog over Nova Scotia under a ridge on 8 September 2021
Quarterly Journal of the Royal Meteorological Society, EarlyView.Image from an aircraft traveling eastward at 1230 UTC (0930 Atlantic Daylight Time, ADT) on 8 September 2021. The view is to the southeast over the eastern coast of Nova Scotia. The leading head of the fog bank is in the image with its base on the sea surface.
Clive E. Dorman +5 more
wiley +1 more source
Geomatics, Natural Hazards & RiskEarthquakes release energy that triggers crustal deformation and atmospheric disturbances via surface waves, affecting the GNSS tropospheric delay. This study focuses on the 2025 Tibet MW6.8 and Myanmar MW7.9 earthquakes.
Hongzhan Zhou +4 more
doaj +1 more source
A comprehensive comparison of atmospheric mapping functions for GPS measurements in Egypt
Journal of Geodetic Science, 2012 The principal limiting error source in the Global Positioning System (GPS) is the mismodeling of the delay experienced by radio waves in propagating through the atmosphere.
Younes S. A., Elmezayen A. G.
doaj +1 more source
Tropospheric Delay Correction Based on a Three-Dimensional Joint Model for InSAR
Remote Sensing, 2019 Tropospheric delays in spaceborne Interferometric Synthetic Aperture Radar (InSAR) can contaminate the measurement of small amplitude earth surface deformation.
Huaping Xu +4 more
doaj +1 more source
Myths and methodologies: Exposure and measurements under normobaric hypoxia
Experimental Physiology, EarlyView.Abstract Usually, settings of normobaric hypoxia underestimate the environmental hypoxia they are supposed to reproduce. The likely steady state of water vapour pressure within the human airways keeps the partial pressure of inspired oxygen very close to the assumed value, but this does not apply to the calculation of environmental hypoxia or ...
Danilo Bondi
wiley +1 more source
Real-time national GPS networks: Opportunities for atmospheric sensing [PDF]
, 2000 Real-time national Global Positioning System (GPS) networks are being established in a number of countries for atmospheric sensing. UCAR, in collaboration with participating universities, is developing one of these networks in the United States.
Anderson, DN +9 more
core +2 more sources