Results 31 to 40 of about 1,305 (167)

GPS zenith tropospheric delay (ZTD) variability in the Mediterranean

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy, 2001
Abstract In the context of the MAGIC project (Meteorological Applications of GPS Integrated Column Water Vapor Measurements in the Western Mediterranean), zenith tropospheric delays (ZTD) are computed from Global Positioning System (GPS) signals at permanent sites in the western Mediterranean area continuously since November 1998.
Haase, J., Vedel, H., Ge, M., Calais, E.
openaire   +4 more sources

Retrieving Precipitable Water Vapor From Shipborne Multi‐GNSS Observations [PDF]

, 2019
©2019. American Geophysical UnionPrecipitable water vapor (PWV) is an important parameter for climate research and a crucial factor to achieve high accuracy in satellite geodesy and satellite altimetry. Currently Global Navigation Satellite System (GNSS)
Ge, Maorong, Gerland, Sebastian, Ramatschi, Markus, Schuh, Harald, Semmling, Maximilian, Wang, Jungang, Wickert, Jens, Wu, Zhilu, Zus, Florian   +8 more
core   +1 more source

Preliminary signs of the initiation of deep convection by GNSS [PDF]

, 2013
This study reports on the exploitation of GNSS (Global Navigation Satellite System) and a new potential application for weather forecasts and nowcasting.
Brenot, H, Clerbaux, N, De Meutter, Pieter, Deckmyn, A, Delcloo, A, Delobbe, L, Frappez, L, Neméghaire, J, Van Roozendael, M   +8 more
core   +3 more sources

Detecting Signatures of Convective Storm Events in GNSS‐SNR: Two Case Studies From Summer 2021 in Switzerland

Geophysical Research Letters, Volume 50, Issue 21, 16 November 2023., 2023
Abstract Global Navigation Satellite Systems (GNSS) are not only a state‐of‐the‐art sensor for positioning and navigation applications but also a valuable tool for remote sensing. Through the usage of L‐band carrier frequencies, GNSS acts as an all‐weather‐operation system, offering substantial benefits compared to optical systems. Nevertheless, severe
Matthias Aichinger‐Rosenberger, Martin Aregger, Jerome Kopp, Benedikt Soja   +3 more
wiley   +1 more source

The effect of data sources on calculating mean temperature and integrated water vapor in Iran

Meteorological Applications, Volume 30, Issue 6, November/December 2023., 2023
Weighted mean temperature in Iran. Abstract The weighted mean temperature (Tm) plays a crucial role in calculating Precipitable Water Vapor (PWV) and integrated water vapor (IWV) using Global Navigation Satellite Systems (GNSS) techniques. Currently, the primary sources for meteorological parameters are radiosonde measurements and Numerical Weather ...
Hassan Rahimi, Jamal Asgari, Vahab Nafisi   +2 more
wiley   +1 more source

A GPS network for tropospheric tomography in the framework of the Mediterranean hydrometeorological observatory Cévennes-Vivarais (south-eastern France) [PDF]

, 2014
International audienceThe Mediterranean hydrometeorological observatory Cévennes-Vivarais (OHM-CV) coordinates hydrometeorological observations (radars, rain gauges, water level stations) on a regional scale in southeastern France.
Brenot, Hugues, Champollion, Cedric, Collard, Philippe, Doerflinger, Erik, Ducrocq, Véronique, Giroux, Pierre, Masson, Frédéric, Reverdy, Mathieu, van Baelen, Joël, Walpersdorf, Andrea   +9 more
core   +4 more sources

Investigating tropospheric effects and seasonal position variations in GPS and DORIS time-series from the Nepal Himalaya [PDF]

, 2009
Geodetic time-series from continuous GPS (cGPS) and 1 DORIS stations across the Himalaya of central Nepal show strong seasonal fluctuations observed on the horizontal and vertical components.
Avouac, Jean-Philippe, Bettinelli, Pierre, Flouzat, Mireille, Gautam, Umesh, Héritier, Thierry, Willis, Pascal   +5 more
core   +3 more sources

Tropospheric delay performance for GNSS integrated water vapor estimation by using GPT2w model, ECMWF's IFS operational model and in situ meteorological data [PDF]

Advances in Geosciences, 2018
Tropospheric delay comprises one of the most important error sources in satellite navigation and is caused when radio signals broadcasted by GPS satellites propagate into the atmosphere.
C. Oikonomou, F. Tymvios, F. Tymvios, C. Pikridas, S. Bitharis, K. Balidakis, S. Michaelides, H. Haralambous, H. Haralambous, D. Charalambous, D. Charalambous   +10 more
doaj   +1 more source

DESIGNATING THE ERROR OF VERTICAL COORDINATE OF AIRCRAFT POSITION IN THE GPS SYSTEM

Scientific Journal of Silesian University of Technology. Series Transport, 2020
This article presents the results of research concerning the determination of an error of the vertical position of an aircraft during a flight, taking into account, the flight altitude and the values of the ZTD tropospheric product.
Małgorzata KIRSCHENSTEIN, Kamil KRASUSKI, Artur GOŚ   +2 more
doaj   +1 more source

Real-Time Tropospheric Delay Retrieval from Multi-GNSS PPP Ambiguity Resolution: Validation with Final Troposphere Products and a Numerical Weather Model

Remote Sensing, 2018
The multiple global navigation satellite systems (multi-GNSS) bring great opportunity for the real-time retrieval of high-quality zenith tropospheric delay (ZTD), which is a critical quality for atmospheric science and geodetic applications.
Cuixian Lu, Xin Li, Junlong Cheng, Galina Dick, Maorong Ge, Jens Wickert, Harald Schuh   +6 more
doaj   +1 more source