Results 101 to 110 of about 120,602 (222)

A dense GNSS meteorological network for observing deep convection in the Amazon

Atmospheric Science Letters, 2011
AbstractA dense Global Navigation Satellite System (GNSS) meteorological network (∼20 stations) in the central Amazon Basin in Brazil is being developed for long‐term studies of deep convection/water vapor interactions and feedback. In this article, the network is described and preliminary results are presented: GNSS‐derived precipitable water vapor is
Adams, David K., Fernandes, Rui M. S., Kursinski, E. Robert, Maia, Jair M., Sapucci, Luiz F., Machado, Luiz A. T., Vitorello, Icaro, Galera Monico, Joao Francisco, Holub, Kirk L., Gutman, Seth I., Filizola, Naziano, Bennett, Richard A.   +11 more
openaire   +3 more sources

Can Android Smartphones Contribute to GNSS Meteorology?

The Global Navigation Satellite System (GNSS) is an essential tool for tropospheric monitoring. Currently, GNSS meteorology relies mainly on the data collected from geodetic-grade receivers of global or regional networks. However, such stations are costly, and thus cannot be densely deployed, especially in less developed regions.
Pan, Yuanxin, Bialek, Tanja, Soja, Benedikt   +2 more
openaire   +3 more sources

Characterization of the Plumbing System Beneath Askja Caldera, Iceland, Revealed by Microgravity and Deformation Data During Uplift Between 2022 and 2023

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract In July 2021, an episode of uplift started at Askja caldera, Iceland, following over 50 years of subsidence. The initial inflation rate was approximately 700mm/yr $700\hspace*{.5em}\mathrm{m}\mathrm{m}/\mathrm{y}\mathrm{r}$, declining to 350mm/yr $350\hspace*{.5em}\mathrm{m}\mathrm{m}/\mathrm{y}\mathrm{r}$ within 1 month.
Josefa Sepúlveda‐Araya, Andrew Hooper, Elske van Dalfsen, Susanna K. Ebmeier, Michelle Parks, Freysteinn Sigmundsson, Yilin Yang, Milan Lazecký, Mathijs Koymans, Chiara Lanzi, Pedro Espín‐Bedón   +10 more
wiley   +1 more source

Analysing the Zenith Tropospheric Delay Estimates in On-line Precise Point Positioning (PPP) Services and PPP Software Packages

Sensors, 2018
As Global Navigation Satellite System (GNSS) signals travel through the troposphere, a tropospheric delay occurs due to a change in the refractive index of the medium.
Jorge Mendez Astudillo, Lawrence Lau, Yu-Ting Tang, Terry Moore   +3 more
doaj   +1 more source

Assimilating GNSS Airborne Radio Occultation Bending Angles With MPAS–JEDI During a Sequence of Atmospheric Rivers

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract Global Navigation Satellite System (GNSS) airborne radio occultation (ARO) observations, collected during Atmospheric River Reconnaissance (AR Recon) campaigns, enhance AR sampling beyond traditional dropsondes. Assimilating ARO bending angles requires a forward operator accounting for ARO geometry and proper integration in a data assimilation
Ivette Hernández Baños, Jennifer S. Haase, Pawel Hordyniec, Bing Cao, Zhiquan Liu, Phuong‐Nghi Do   +5 more
wiley   +1 more source

The Impacts of Tropospheric Gravity Wave‐Generated MSTIDs on Skywaves at Mid‐latitude North American Sector Observed and Modeled Using SuperDARN HF Radars

Radio Science, Volume 61, Issue 9, September 2026.
Abstract Trans‐ionospheric high frequency (HF: 3–30 MHz) response to atmospheric gravity waves (GWs) is studied in the middle‐latitude ionosphere in relation to thunderstorm activity. SuperDARN HF radar observations are compared against the model simulations to quantify the impact of GW‐generated medium‐scale traveling ionospheric disturbances (MSTID ...
S. Chakraborty, P. A. Inchin, S. Debchoudhury, B. Bergsson, M. Zettergren, J. M. Ruohoniemi   +5 more
wiley   +1 more source

The Potential for Observing African Weather with GNSS Remote Sensing

Advances in Meteorology, 2015
When compared to the wide range of atmospheric sensing techniques, global navigation satellite system (GNSS) offers the advantage of operating under all weather conditions, is continuous, with high temporal and spatial resolution and high accuracy, and ...
Olalekan A. Isioye, Ludwig Combrinck, Joel O. Botai, Cilence Munghemezulu   +3 more
doaj   +1 more source

Obtaining Local‐Tie Vectors From Short‐Baseline Interferometry Between Legacy S/X and VGOS Telescopes at Ny‐Ålesund

Radio Science, Volume 61, Issue 9, September 2026.
Abstract With the ongoing transition for geodetic Very Long Baseline Interferometry (VLBI) from the use of legacy S/X telescopes to the VLBI Global Observing System (VGOS), it is necessary to connect the new VGOS network to the existing legacy S/X telescopes.
Rebekka Handirk, Eskil Varenius, Tobias Nilsson, Karine Le Bail, Rubén Bolaño González, Susana Garcia‐Espada, Axel Meldahl, Thomas Gasmoe, Silje Agnes Grøslie Wennesland, Oddvar Bråvold Tangen, Halfdan Pascal Kierulf   +10 more
wiley   +1 more source

Correlation of High‐Latitude Scintillation With Auroral Precipitation: Case Studies Using GNSS Radio Occultation Data From PlanetiQ

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This study presents a survey of high‐latitude ionospheric scintillation using GNSS radio occultation (RO) data from the PlanetiQ satellite. The analysis examines 483 high‐latitude RO tracks between January and May 2023, with 371 tracks exhibiting scintillation events.
Margaret W. Chen, Endawoke Yizengaw, James H. Hecht, Paul Straus, Charles S. Carrano, Tibor Durgonics, Keith M. Groves   +6 more
wiley   +1 more source

A new vertical reduction model for enhancing the interpolation accuracy of VMF1/VMF3 tropospheric delay products [PDF]

Geoscientific Model Development
Grid-wise Vienna Mapping Functions 1 (VMF1) and Vienna Mapping Functions 3 (VMF3) tropospheric products are widely used to interpolate the a priori zenith hydrostatic delay (ZHD) and zenith wet delay (ZWD) over GNSS (Global Navigation Satellite Systems ...
P. Sun, K. Zhang, K. Zhang, D. Zhu, S. Shi, X. Liu, D. Zhao, M. Zhang, S. Wu   +8 more
doaj   +1 more source