Results 51 to 60 of about 221,487 (235)
GPS tomography: validation of reconstructed 3-D humidity fields with radiosonde profiles [PDF]
Annales Geophysicae, 2013 Water vapor plays an important role in meteorological applications; GeoForschungsZentrum (GFZ) therefore developed a tomographic system to derive 3-D distributions of the tropospheric water vapor above Germany using GPS data from about 300 ground ...
M. Shangguan +6 more
doaj +1 more source
Remote Sensing, 2020 Along the Mediterranean coastlines, intense and localized rainfall events are responsible for numerous casualties and several million euros of damage every year.
M. Lagasio +7 more
semanticscholar +1 more source
The uncertainty of the atmospheric integrated water vapour estimated from GNSS observations [PDF]
Atmospheric Measurement Techniques, 2016 Within the Global Climate Observing System (GCOS) Reference Upper-Air Network (GRUAN) there is a need for an assessment of the uncertainty in the integrated water vapour (IWV) in the atmosphere estimated from ground-based global navigation satellite ...
T. Ning +8 more
doaj +1 more source
Remote Sensing, 2022 Potential evapotranspiration (PET) is generally estimated using empirical models; thus, how to improve PET estimation accuracy has received widespread attention in recent years.
Haobo Li +5 more
doaj +1 more source
Fast Observation Operator for Global Navigation Satellite System Tropospheric Gradients
Remote Sensing, 2023 From the raw measurements at a single Global Navigation Satellite System (GNSS) ground-based station, the Zenith Total Delay (ZTD) and the tropospheric gradient can be estimated.
Florian Zus +3 more
doaj +1 more source
Geodesy and Geodynamics, 2019 The International GNSS Service (IGS) final products (ephemeris and clocks-correction) have made the GNSS an indispensable low-cost tool for scientific research, for example sub-daily atmospheric water vapor monitoring.
Benachour Labib +4 more
doaj +1 more source
Preliminary Results on Tropospheric ZTD Estimation by Smartphone
Remote Sensing, 2021 The Global Navigation Satellite System (GNSS) receiver is one of the many sensors embedded in smartphones. The early versions of the Android operating system could only access limited information from the GNSS, allowing the related Application Program ...
Lorenzo Benvenuto +3 more
doaj +1 more source
Improved mapping functions for atmospheric refraction correction in SLR [PDF]
, 2002 [1] We present two new mapping functions (MFs) to model the elevation angle dependence of the atmospheric delay for satellite laser ranging (SLR) data analysis.
Langley, RB +4 more
core +1 more source
Absolute kinematics of radio source components in the complete S5 polar cap sample. III. First wide-field high-precision astrometry at 15.4 GHz [PDF]
, 2007 We report on the first wide-field, high-precision astrometric analysis of the 13 extragalactic radio sources of the complete S5 polar cap sample at 15.4 GHz. We describe new algorithms developed to enable the use of differenced phase delays in wide-field
Beasley +24 more
core +3 more sources
Assimilation of zenith total delays in the AROME France convective scale model: a recent assessment
Tellus A: Dynamic Meteorology and Oceanography, 2015 The impact of assimilating GPS zenith total delays (ZTD) in the convective scale model AROME is assessed over a 1-month period in summer 2013. The experimental set-up is similar to the current operational usage at Météo-France where the observing system has been expanded in July 2013 in a three-dimensional variational (3D-Var) data assimilation scheme ...
Mahfouf, Jean-Francois +3 more
openaire +5 more sources