Results 41 to 50 of about 1,078 (176)
Deep Space Network Measurement Model Development for Interplanetary Mission [PDF]
Journal of Astronomy and Space Sciences, 2004 The DSN(Deep Space Network) measurement model for interplanetary navigations which is essential for precise orbit determination has been developed. The DSN measurement model produces fictitious DSN observables such as range, doppler and angular data ...
Hae-Yeon Kim +10 more
doaj +1 more source
Multiscale numerical sensitivity simulations of a mesoscale gravity‐wave event
Quarterly Journal of the Royal Meteorological Society, EarlyView.High‐resolution WRF simulations of the February 14–15, 1992 STORM‐FEST event show that mesoscale gravity‐wave genesis occurs via geostrophic adjustment within an upper‐level unbalanced jet, while wave ducting governs maintenance. High‐resolution (1 km), improved physical parameterization, and targeted sensitivity simulations demonstrate that upstream ...
Rajan Bhandari +2 more
wiley +1 more source
Regional Egypt tropospheric mapping function model
Alexandria Engineering Journal, 2018 It’s essential to find out the delay caused by the troposphere layer to be able to get more accurate results. The precise positioning is very essential for accurate geodetic applications e.g., Crustal deformation and military purposes.
Ahmed Nabil Mohammed +3 more
doaj +1 more source
Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models
Quarterly Journal of the Royal Meteorological Society, EarlyView.Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi +5 more
wiley +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.Across the Maritime Continent, diurnal rainfall variability is governed by interactions between regional‐scale atmospheric drivers and local land–sea breeze circulations. Afternoon convection is initiated over land by surface heating and propagates offshore, whereas morning rainfall develops over adjacent seas and moves inland under low‐level northerly
Dony Christianto +3 more
wiley +1 more source
Coupled diabatic and frictional forcing of single‐layer vortical flow
Quarterly Journal of the Royal Meteorological Society, EarlyView.A single‐layer balanced model is used to illustrate how diabatic and frictional forcing of a primary balanced vortical flow can be coupled self‐consistently, including the advection of potential vorticity by the induced transverse circulation. The coupling is illustrated in the context of a developing tropical cyclone, in which boundary‐layer dynamics ...
R. K. Scott
wiley +1 more source
Remote Sensing, 2015 This study successfully uses satellite altimetry, including Topex/Poseidon and Jason-2, retrieved by novel retrackers to monitor vertical land motions in Southwestern Taiwan. Satellite altimetry was originally designed to measure open oceans, so waveform
Chung-Yen Kuo +3 more
doaj +1 more source
Correction of Atmospheric Delay Error of Airborne and Spaceborne GNSS-R Sea Surface Altimetry
Frontiers in Earth Science, 2022 Improving the measurement accuracy is a necessary condition for sea surface altimetry using the Global Navigation Satellite System Reflectometry (GNSS-R).
Zhengjie Yan +7 more
doaj +1 more source
Progressive emergence of canopy gravity waves during the afternoon–evening transition
Quarterly Journal of the Royal Meteorological Society, EarlyView.Large‐eddy simulations are used to investigate the afternoon‐to‐evening transition of turbulence over a forest canopy and its coupling with atmospheric boundary‐layer dynamics. As surface cooling strengthens stability and weakens near‐canopy winds, canopy turbulence transitions progressively to internal gravity waves that dominate the evening flow ...
S. Dupont
wiley +1 more source
Научный вестник МГТУ ГА, 2016 The article analyses the influence of dynamical errors, ionospherie and tropospherie errors on navigational definition of aircraft. The quantity of these errors for the Tumen region is cited. Comparative analysis of these errors is given.
D. A. Zatuchny
doaj