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On the Study of Influences of Different Factors on the Rapid Tropospheric Tomography

Liu, Lou, Zhang, Huang, Zhou, Zhang
2019 Remote Sensing  
Influences of different factors on the tomographic results, including theground meteorological data, the multi-Global Navigation Satellite System (GNSS) observations, theground station distribution and  ...  A rapid tropospheric tomography system was developed by using algebraicreconstruction technique.  ...  Acknowledgments: The authors would like to thank NOAA CISL for providing forecast products and ECMWF for providing ERA5 products. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs11131545 fatcat:xnxvicuwlvd5tiw34mioctezva

Estudio experimental de tomografía GNSS en Lisboa (Portugal)

Pedro Benevides, João Catalão, Pedro Miranda
2014 Física de la Tierra  
Reconstruction of the slant path observation in the satellite line of view allows to study the troposphere heterogeneity. 3D tomographic software was developed to model the troposphere dynamics throughout  ...  This study aims for a preliminary characterization of the 3D water vapour field over this region, which will help to assist the investigation of severe weather episodes.  ...  Acknowledgements Fundação para a Ciência e Tecnologia (FCT), for the PhD grant SFRH/BD/80288/ 2011.  ... 
doi:10.5209/rev_fite.2014.v26.46972 fatcat:gorc3kr7xnbjthe7oankrvo55i

Review of the state of the art and future prospects of the ground-based GNSS meteorology in Europe

Guergana Guerova, Jonathan Jones, Jan Douša, Galina Dick, Siebren de Haan, Eric Pottiaux, Olivier Bock, Rosa Pacione, Gunnar Elgered, Henrik Vedel, Michael Bender
2016 Atmospheric Measurement Techniques  
A summary of the use of the products for validation and impact studies with operational numerical weather prediction (NWP) models as well as very short weather prediction (nowcasting) case studies is given  ...  The advances in GNSS processing for derivation of tropospheric products, application of GNSS tropospheric products in operational weather prediction and application of GNSS tropospheric products for climate  ...  Pottiaux acknowledges the support of the Solar-Terrestrial Centre of Excellence (STCE), funded by the Belgian Federal Science Policy Office (BelSPO).  ... 
doi:10.5194/amt-9-5385-2016 fatcat:4tnhaguthra43oad4ijy33op7m

An improved troposphere tomographic approach considering the signals coming from the side face of the tomographic area

Qingzhi Zhao, Yibin Yao
2017 Annales Geophysicae  
Given the method above needs the establishment of a unit scale factor model using the radiosonde data at only one location in the research area, an improved approach is proposed by considering the reasonability  ...  A troposphere tomographic method has been proposed considering the signal rays penetrating from the side of the area of interest to solve the problem of the low utilisation rate of global navigation satellite  ...  This research was supported by the National Key Research and Development Program of China (2016YFB0501803) and the National Natural Science Foundation of China (41574028). The topical editor, M.  ... 
doi:10.5194/angeo-35-87-2017 fatcat:fgwlcp4nuncdtf7cvevaqcn5om

Review of the state-of-the-art and future prospects of the ground-based GNSS meteorology in Europe

Guergana Guerova, Jonathan Jones, Jan Dousa, Galina Dick, Siebren de Haan, Eric Pottiaux, Olivier Bock, Rosa Pacione, Gunnar Elgered, Henrik Vedel, Michael Bender
2016 Atmospheric Measurement Techniques Discussions  
Given is a summary of the use of the products for validation and impact studies with operational Numerical Weather Prediction (NWP) models as well as very short weather prediction (nowcasting) case studies  ...  Climate research with GNSS is an emerging field of research, the studies so far have been limited to comparison with the climate models and derivation of trends.  ...  The authors would like to acknowledge the support provided by COST -European Cooperation in Science and Technology for providing financial assistance for publication of the paper. Dr. W.  ... 
doi:10.5194/amt-2016-125 fatcat:l2txrnmiynf7ri6eoymgkecq6i

LEO Constellation-Augmented Multi-GNSS for 3D Water Vapor Tomography

Si Xiong, Fujian Ma, Xiaodong Ren, Jun Chen, Xiaohong Zhang
2021 Remote Sensing  
This paper analyzes the influence of LEO constellation-augmented multi-GNSS(LCAMG)on the tomography, in terms of ray distribution, tomography accuracy, and horizontal resolution, by simulating LEO constellation  ...  The rapid development of low Earth orbit (LEO) constellations has led to a richer set of observations, which brings new expectations for water vapor tomography.  ...  Acknowledgments: The authors would like to thank the ECMWF for providing layered meteorological data. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13163056 fatcat:rpulyh46ibfjhehszlaxsawfpa

Determination of the spatial and temporal variation of tropospheric water vapour using CGPS networks

M. Troller, A. Geiger, E. Brockmann, H.-G. Kahle
2006 Geophysical Journal International  
S U M M A R Y Tropospheric water vapour is the main limiting factor in using GPS to determine crustal deformation at highest accuracy.  ...  Furthermore, GPS is a convenient application to determine the amount of water vapour in the troposphere.  ...  The constraints are down-weighted compared to the double-difference observations by a factor of 50 2 (regularization factor = 1 2500 ).  ... 
doi:10.1111/j.1365-246x.2006.03101.x fatcat:kz5to2chjrd2xjgeutk5444qvu

A GPS network for tropospheric tomography in the framework of the Mediterranean hydrometeorological observatory Cévennes-Vivarais (southeastern France)

H. Brenot, A. Walpersdorf, M. Reverdy, J. van Baelen, V. Ducrocq, C. Champollion, F. Masson, E. Doerflinger, P. Collard, P. Giroux
2014 Atmospheric Measurement Techniques  
This study presents methodological tests for retrieving GPS tropospheric observations from dense networks, with the aim of assessing the uncertainties of GPS retrievals.  ...  Using optimal tropospheric GPS retrieval methods, high resolution measurements of PWV on a local scale (a few kilometres) are discussed for rain events.  ...  We would like to thank all collaborators contributing to the project with their expertise (J.  ... 
doi:10.5194/amt-7-553-2014 fatcat:f3yosg7uc5bkhgdrvtrhmuvulm

Positioning and applications

Jerzy B. Rogowski, Pawel Wielgosz
2015 Geodesy and Cartography  
The paper presents national report of Poland for IAG on positioning and applications.  ...  troposphere modelling and studies.  ...  Acknowledgements The authors are grateful to their colleagues Slawomir Cellmer, Tomasz Hadas, Anna Krypiak-Gregorczyk, Jacek Kudrys, Jacek Paziewski, Dominik Prochniewicz, Witold Rohm, and Bogdan Skorupa  ... 
doi:10.1515/geocart-2015-0014 fatcat:bm3smaaeyrcyza4uzncj3gfxyy

Research Progress on Geosynchronous Synthetic Aperture Radar

Cheng Hu, Zhiyang Chen, Yuanhao Li, Xichao Dong, Stephen Hobbs
2021 Fundamental Research  
and the study of such systems has entered a period of vigorous development.  ...  Hu). 1 These authors contributed equally to this work. expected to launch in approximately 2022 to monitor the dynamic changes in the Earth system based on the high penetration of the L-band signal.  ...  Acknowledgments This work was funded in part by the National Natural Science  ... 
doi:10.1016/j.fmre.2021.04.008 fatcat:fzptg2j3anhpfo6vg7zekz6e5y

New parameterized model for GPS water vapor tomography

Nan Ding, Shubi Zhang, Qiuzhao Zhang
2017 Annales Geophysicae  
It is rarely contained in the atmosphere during the water cycle, but it is the most active element in rapid space–time changes.  ...  However, the accuracy of the tomography results is gradually reduced with increases in altitude below 7000<span class="thinspace"></span>m.  ...  This study is supported by the National Natural Science Foundation of China (no. 41504032), the Natural Science Foundation of Jiangsu Province (BK20150175), and the Specialized Research Fund for the Doctoral  ... 
doi:10.5194/angeo-35-311-2017 fatcat:3y4kqjwh6bhunjvfzkjt2qfooy

Atmospheric Studies with the Tri-Band Beacon Instrument on the COSMIC Constellaion

Paul A. Bernhardt, Craig A. Selcher, Santi Basu
2000 Terrestrial, Atmospheric and Oceanic Sciences  
The integral of electron density along vertical or oblique paths is obtained by employing radio transmissions from low-earth-orbiting (LEO) COSMIC satellite transmitters to a chain of receivers on the  ...  Analyzing the total electron content (TEC) data using computerized ionospheric tomography (CIT) produces two-dimensional maps of the iono spheric plasma.Difficulties associated with CIT arise from the  ...  This research was sponsored by the Office of Naval Research and the COSMIC Program Office at the University Corporation for Atmospheric Research.  ... 
doi:10.3319/tao.2000.11.1.291(cosmic) fatcat:sxzexj36x5cyfdpcbsad7cnfgi

Application of a simultaneous iterations reconstruction technique for a 3-D water vapor tomography system

Wang Wei, Ye Biwen, Wang Jiexian
2013 Geodesy and Geodynamics  
The simultaneous iterations reconstruction technique ( SIRT) is one of several reconstruction algorithms of the ART family.  ...  The results show that the SIRT can function effectively in water vapor tomography, obtain rapid convergence, and be implemented more easily than inversion.  ...  Overall, the tomography process is influenced by various factors. Moreover, the SIRT algorithm should he improved in future studies.  ... 
doi:10.3724/sp.j.1246.2013.01041 fatcat:awn6vwh45fb7ben7mwnycw5vpy

A GPS network for tropospheric tomography in the framework of the Mediterranean hydrometeorological observatory Cévennes-Vivarais (South-Eastern France)

H. Brenot, A. Walpersdorf, M. Reverdy, J. van Baelen, V. Ducrocq, C. Champollion, F. Masson, E. Doerflinger, P. Collard, P. Giroux
2013 Atmospheric Measurement Techniques Discussions  
Brenot et al.: A GPS network for tropospheric tomography 569 57 location of the d) profile; d) Water vapour density (g/m 3 ) on vertical cross sections (west-east oriented). 1 Lines of constant water vapour  ...  This study presents methodological tests for retrieving GPS tropospheric observations from dense networks, with the aim of assessing the uncertainties of GPS retrievals.  ...  We would like to thank all collaborators contributing to the project with their expertise (J.  ... 
doi:10.5194/amtd-6-9513-2013 fatcat:5rtz5gleq5fmboo3yzp5zbdsqu

GNSS-Based Machine Learning Storm Nowcasting

Marcelina Łoś, Kamil Smolak, Guergana Guerova, Witold Rohm
2020 Remote Sensing  
In this study, we introduce a methodology to use the synergy of IWV and tomography-based vertical profiles to predict 0–2 h of storms using a machine learning approach for Poland.  ...  The results show that wet refractivity below 6 km and IWV on the west of the storm are among the significant parameters with potential for predicting storm location.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs12162536 fatcat:3okdwumbkvdq5k4jpl75xj2cky
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