Zohreh Adavi
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View article: Calculation GNSS STD, SWD, and ZTD
Calculation GNSS STD, SWD, and ZTD Open
Python package for creating GNSS STD/SWD as well as modelled (GPT/VMF) ZTD Install all required packages indicated in the requirements. You can find all updates and changes at: https://github.com/zohrehadavi/STD_SWD_Calc
View article: Machine Learning-Based Estimation of Hourly GNSS Precipitable Water Vapour
Machine Learning-Based Estimation of Hourly GNSS Precipitable Water Vapour Open
Water vapour plays a key role in long-term climate studies and short-term weather forecasting. Therefore, to understand atmospheric variations, it is crucial to observe water vapour and its spatial distribution. In the current era, Global …
View article: Pre-analysis of GNSS tomography solution using the concept of spread of model resolution matrix
Pre-analysis of GNSS tomography solution using the concept of spread of model resolution matrix Open
GNSS tropospheric tomography is one of the applications of the Global Navigation Satellite Systems (GNSS) signals which attracts more and more interest in the field of meteorology. This method can reconstruct the water vapour of the atmosp…
View article: Applying Machine Learning Methods to predict rain using GNSS products and meteorological parameters
Applying Machine Learning Methods to predict rain using GNSS products and meteorological parameters Open
<p>Nowadays, weather forecast is an important factor of everyday life that we should be well prepared for. Especially the amount of rainfall can positively or negatively influence our lifestyle. While a moderate rainfall is supportiv…
View article: Application of the Total Variation Method in Near Real-Time GNSS Tropospheric Tomography
Application of the Total Variation Method in Near Real-Time GNSS Tropospheric Tomography Open
GNSS tomography is an all-weather remote sensing technique to capture the spatiotemporal behavior of the atmospheric water vapor using the standing infrastructure of GNSS satellites and networks. In this method, the troposphere is discreti…
View article: Assessment of regularization techniques in GNSS tropospheric tomography based on single- and dual-frequency observations
Assessment of regularization techniques in GNSS tropospheric tomography based on single- and dual-frequency observations Open
Water vapor is one of the most variable components in the earth's atmosphere and has a significant role in forming clouds, rain and snow, air pollution, and acid rain. Therefore, increasing the accuracy of estimated water vapor can lead to…
View article: Impact of the Galileo constellation on GNSS Tropospheric Tomography
Impact of the Galileo constellation on GNSS Tropospheric Tomography Open
<p>GNSS Tomography is a promising tool to reconstruct the wet refractivity field (Nw) related to water vapor due to the continuous pass of GNSS rays through the atmosphere. To improve observation geometry compared to a sole GPS/ Glon…
View article: Analysis of GOES-R as a Constraint in GNSS Tropospheric Tomography
Analysis of GOES-R as a Constraint in GNSS Tropospheric Tomography Open
<p>GNSS tomography is an all-weather condition remote sensing technique in the field of meteorology that is gaining considerable attention in recent years. The water vapor distribution and related parameters like wet refract…
View article: Assessment of single-frequency observations in GNSS Tropospheric Tomography
Assessment of single-frequency observations in GNSS Tropospheric Tomography Open
<p>Water vapor is one of the most variable components in the Earth’s atmosphere, which has a significant role in the formation of clouds, rain and snow, air pollution and acid rain. Therefore, increasing the accuracy of est…
View article: Sensing small-scale structures in the troposphere with tomographic principles (IAG working group)
Sensing small-scale structures in the troposphere with tomographic principles (IAG working group) Open
<p>Within the International Association of Geodesy (IAG), a new working group was formed with the intention to bring together researchers and professionals working on tomography-based concepts for sensing the neutral atmosphere with …
View article: Analyzing Different Parameterization Methods in GNSS Tomography Using the COST Benchmark Dataset
Analyzing Different Parameterization Methods in GNSS Tomography Using the COST Benchmark Dataset Open
GNSS tomography is an emerging remote sensing technique in the field of meteorology that is gaining increased attention in recent years. This method is used as a tool for atmospheric (particularly tropospheric) sensing and then applied in …
View article: Evaluation of Virtual Reference Station Constraints for GNSS Tropospheric Tomography in Austria Region
Evaluation of Virtual Reference Station Constraints for GNSS Tropospheric Tomography in Austria Region Open
One of the most promising methods of GNSS meteorology is GNSS Tomography. This method can be used for the determination of water vapor distribution, which contributes to the reliability of weather forecasting and early warning of severe we…