Results 141 to 150 of about 421 (151)

Long-term ZTD and ZWD series and climate normals using NCEP1

2020
<p>The World Meteorological Organization (WMO) recommends the use of climate normals for dealing with the analysis of variations and trends of the meteorological parameters or be used as input to predictive climate models. The suggested period is 30 years, but shorter periods can also be employed.
Marcelo C. Santos, Marlon Moura, Thalia Nikolaidou, Kyriakos Balidakis   +3 more
openaire   +2 more sources

MM5 derived ZWDs compared to observational results from VLBI, GPS and WVR

Physics and Chemistry of the Earth, Parts A/B/C, 2002
Abstract Modelled values of zenith wet delay (ZWD) from the non-hydrostatic numerical weather prediction (NWP) model MM5 are compared to estimated values retrieved from observations by geodetic very long baseline interferometry (VLBI), global positioning system (GPS) receivers, and water vapour radiometers (WVRs).
D. Behrend, R. Haas, D. Pino, L.P. Gradinarsky, S.J. Keihm, W. Schwarz, L. Cucurull, A. Rius   +7 more
openaire   +1 more source

ETH-Bibliothek: Akten 1855-2004: Bestandssignatur: EZ-ZWD-Bib01

2006
Archiv der ETH Zürich und des ETH-Rats: Findmittel zu den Beständen ...
openaire   +2 more sources

The impact of relative and absolute GNSS positioning strategies on estimated coordinates and ZWD in the framework of meteorological applications

Applied Geomatics, 2018
Since many years, the GNSS has been regarded by the meteorological community as one of the systems for atmospheric water vapour remote sensing. Time series of wet delays, estimated as by-products of accurate positioning, have been assimilated into numerical weather prediction models.
FERMI, ALESSANDRO, Eugenio Realini, Giovanna Venuti   +2 more
openaire   +2 more sources

Evaluation of Real-Time ZWD and Tropospheric Gradients Derived from GFZ Real-Time Orbit and Clock Products

Precise Point Positioning (PPP) provides zenith wet delay (ZWD) and horizontal tropospheric gradients as key tropospheric parameters. The availability of real-time satellite orbit and clock products enables real-time tropospheric monitoring, which is currently mainly based on IGS Real-Time Service (IGS-RTS) products.
Shengping He, Andreas Brack, Jens Wickert   +2 more
openaire   +2 more sources

Development of a Tropospheric Delay Estimation Model Based on Observed Atmospheric Pressure and High-precision GNSS Data Processed ZWD Estimation Values

Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, 2023
Yeong-Guk Kim, Hye-In Kim, Kwan-Dong Park   +2 more
openaire   +1 more source

Establishing Zenith Wet Delay model (ZWD) and developing a framework for generating high resolution PWV for extreme weather monitoring using MT-InSAR and GNSS for Indian Himalayan region 

Precipitable water vapor (PWV), an essential climate variable enlisted by the Global Climate Observing System (GCOS), can be efficiently mapped using popular Earth Observation techniques like Global Navigation Satellite System (GNSS) and Interferometric Synthetic Aperture Radar (InSAR). When used in a combination, these techniques complement each other
shivika saxena, chandrakanta ojha, ramji dwivedi   +2 more
openaire   +1 more source

A Comprehensive Evaluation and Analysis of the Performance of Multiple Tropospheric Models in China Region

IEEE Transactions on Geoscience and Remote Sensing, 2016
Biyan Chen, George Zhizhao Liu
exaly  

中国区域ZTD、ZWD高程缩放因子的时空特性分析

大地测量与地球动力学, 2021
openaire   +1 more source

用中国地区ERA-Interim资料计算ZTD和ZWD的精度分析

大地测量与地球动力学, 2012
openaire   +1 more source