Results 41 to 50 of about 2,142 (216)
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 +3 more sources
Precipitable Water Vapour Estimation from GNSS Observations: Methodology and Evaluation during a High-Precipitation Month in Santa Maria (RS) [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information SciencesPrecipitable Water Vapour (PWV) represents the total amount of water vapour contained in a vertical column of the atmosphere that is available for precipitation.
A. M. Albuquerque +2 more
doaj +1 more source
Regional Tropospheric Correction Model from GNSS–Saastamoinen–GPT2w Data for Zhejiang Province
Atmosphere, 2023 Tropospheric delay models based on GNSS observations are essential for studying tropospheric changes. However, the uneven distribution of GNSS stations reduces the accuracy of GNSS tropospheric delay models in remote areas.
Chaoqian Xu +6 more
doaj +1 more source
Estimation of Precipitable Water Vapor Using the GPS [PDF]
Journal of Astronomy and Space Sciences, 1999 The radio waves transmitted from GPS satellites is delayed by the troposphere as they propagate to Earth-based GPS receivers. The troposphere delay is usually divided into two parts, the dry delay due to the atmospheric gases and the wet delay due to the
Yong-Jin Moon +2 more
doaj
Remote Sensing, 2020 Continuous estimates of the vertical integrated precipitable water vapor content from the tropospheric delay of the signal received by the antennas of the global positioning system (GPS) are used in this paper, in conjunction with the measurements of the
Leo Pio D’Adderio +4 more
doaj +1 more source
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
Precipitable Water Vapour and Zenith Total Delay time series and models over Slovakia and vicinity
Contributions to Geophysics and Geodesy, 2010 More than 50 permanent GNSS (Global Navigation Satellite Systems) stations are processed continually within the Central European Permanent Network. Zenith Total Delay (ZTD), one of the processing outputs, reflects a delay of the GNSS signal caused by ...
Miroslava IGONDOVÁ, Dušan CIBULKA
doaj +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
, 2016 Atmospheric water vapour has been acknowledged as an essential climate variable. Weather prediction and hazard assessment systems benefit from real-time observations, whereas long-term records contribute to climate studies.
Natali, María Paula +11 more
core +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