Results 81 to 90 of about 409 (165)

Alternative Strategy for Estimating Zenith Tropospheric Delay from Precise Point Positioning

, 2017
. This study considered zenith total delay (ZTD) estimation from precise point positioning (PPP) based on GPS only (PPP GPS), GLONASS only (PPP GLO), and GPS+GLONASS (PPP GPS+GLO) using both a conventional strategy when applying a model for the ...
Jareer Mohammed, Richard M. Bingley, Chris Hill, Terry Moore   +3 more
core   +1 more source

Determination of high-precision tropospheric delays using crowdsourced smartphone GNSS data [PDF]

Atmospheric Measurement Techniques
The Global Navigation Satellite System (GNSS) is a key asset for tropospheric monitoring. Currently, GNSS meteorology relies primarily on geodetic-grade stations. However, such stations are too costly to be densely deployed, which limits the contribution
Y. Pan, G. Kłopotek, L. Crocetti, R. Weinacker, T. Sturn, L. See, G. Dick, G. Möller, M. Rothacher, I. McCallum, V. Navarro, B. Soja   +11 more
doaj   +1 more source

Variational bias correction of GNSS ZTD in the HARMONIE modeling system [PDF]

, 2016
To fill the gap in the observation system for humidity, the HIRLAM–ALADIN Research on Mesoscale Operational NWP in Euromed(HARMONIE) limited-area high-resolution kilometer-scale model has been prepared for assimilation of Global Navigation Satellite ...
Lindskog, Magnus, Thorsteinsson, Sigurdur, Sánchez Arriola, Jana, Bojarova, Jelena   +3 more
core   +1 more source

Improving the estimation of zenith dry tropospheric delays using regional surface meteorological data [PDF]

, 2013
Global Navigation Satellite Systems (GNSS) are emerging as possible tools for remote sensing high-resolution atmospheric water vapour that improves weather forecasting through numerical weather prediction models.
Luo, X., Heck, B., Awange, Joseph
core   +1 more source

Impact of GPS zenith delay assimilation on convective-scale prediction of Mediterranean heavy rainfall

, 2009
International audienceThe numerical weather prediction forecast skill of heavy precipitation events in the Mediterranean regions is currently limited, partly because of the paucity of water vapor observations assimilated today.
Jaubert, G., Walpersdorf, Andrea, Poli, Paul, Ducrocq, Vincent, Yan, X., Yan, Xin, Hakam, M., Poli, P., Jaubert, Geneviève, Ducrocq, Vincent,   +9 more
core   +1 more source

Variability and accuracy of Zenith Total Delay over the East African tropical region

, 2019
The Global Navigation Satellite System (GNSS) can be used to derive accurately the Zenith Tropospheric Delay (ZTD) under all-weather conditions. The derived ZTDs play a vital role in climate studies, weather forecasting and are operationally assimilated ...
Tagliaferro, Giulio, Barindelli, Stefano, Oruru, Bosco (author), Ssenyunzi, Richard Cliffe, Oruru, Bosco, Tagliaferro, Giulio (author), Barindelli, Stefano (author), D'ujanga, Florence Mutonyi, van de Giesen, N.C., van de Giesen, N.C. (author), Ssenyunzi, Richard Cliffe (author), D'ujanga, Florence Mutonyi (author), Realini, Eugenio (author), Realini, Eugenio   +13 more
core   +1 more source

Using global navigation satellite system data for real-time moisture analysis and forecasting over the Australian region I. The system [PDF]

Journal of Southern Hemisphere Earth Systems Science, 2019
The use of high spatial and temporal resolution data assimilation and forecasting around Australia’s capital cities and rural land provided an opportunity to improve moisture analysis and forecasting.
Diandong Ren, Witold Rohm, Tan Le, Chris Tingwell, Peter Steinle, Xiaoming Wang, Paul Lehmann, Ara Cate, Carl Wang, Kefei Zhang, Yi Xiao, Jan Kaplon, Michael Moore, Susan Rennie, David Howard, Robert Norman, John Le Marshall   +16 more
doaj  

A global GNSS climate data record from 5085 stations spanning up to 22 years [PDF]

Earth System Science Data
This work presents a comprehensive global GNSS climate data record derived from 5085 stations, spanning up to a 22-year period 2000–2021. The dataset was generated using the state-of-the-art processing methodologies and precise products from the ...
X. Wang, X. Wang, H. Li, S. Choy, Q. Huang, W. Cai, A. Rea, H. Zhang, L. Elneser, Y. Kuleshov   +9 more
doaj   +1 more source

Zenith total delay interpolation to support GNSS monitoring of potential precipitations

, 2017
A useful contribution to atmosphere monitoring may be provided by the analysis of GNSS (Global Navigation Satellite System) signals. The authors have identified a procedure to monitor in space and time the Precipitable Water Vapor (PWV) content on ...
Ferrando, I., Federici, B., Sguerso, D.
core  

Evaluation of ocean tide loading effects on GPS-estimated precipitable water vapour in Turkey

Geodesy and Geodynamics, 2016
Global Positioning System (GPS) has been widely used to estimate the total zenith tropospheric delay (ZTD) and precipitable water vapour (PWV) for weather prediction and atmospheric research as a continuous and all-weather technique. However, estimations
Gurbuz Gokhan, Shuanggen Jin
doaj   +1 more source