Results 31 to 40 of about 984 (204)
Space Weather, Volume 24, Issue 9, September 2026.Abstract Sparse reference station networks and severe geomagnetic disturbances can significantly degrade the accuracy of regional ionospheric delay modeling at the network side, thereby reducing the positioning performance of PPP‐RTK. To address this issue, this study proposes a machine learning‐based ionospheric delay grid modeling method that finely ...
Linyu He +6 more
wiley +1 more source
Negative emissions—Part 2: Costs, potentials and side effects
Environmental Research Letters, 2018 The most recent IPCC assessment has shown an important role for negative emissions technologies (NETs) in limiting global warming to 2 °C cost-effectively.
Sabine Fuss +17 more
doaj +1 more source
Reference frames and reference networks
Geodesy and Cartography, 2015 The summary of research activities concerning reference frames and reference networks performed in Poland in a period of 2011-2014 is presented. It contains the results of research on implementation of IUGG2011 and IAU2012 resolutions on reference ...
Bosy Jaroslaw, Krynski Jan
doaj +1 more source
Predicting the Likelihood of Using Car-Sharing in the Greater Cairo Metropolitan Area
Urban Science, 2020 This research investigates the influencing variables that affect the likelihood of choosing car-sharing if it launches in the Greater Cairo Metropolitan Area, Egypt. It adopts a binary logistic regression model to analyze the findings of an online stated
Abdelrahman Samaha, Hamid Mostofi
doaj +1 more source
Space Weather, Volume 24, Issue 8, August 2026.Abstract Large ionospheric disturbances were observed over Europe during the extreme geomagnetic storm on 10 May 2024. This study analyzes GNSS‐derived total electron content (TEC) and all‐sky imager data to investigate these disturbances. Pronounced TEC enhancements, irregularities, and strong gradients were confined to the auroral region above the ...
Grzegorz Nykiel +5 more
wiley +1 more source
Calibration and Fusion of GOLD‐Inferred TEC Data With Ground‐Based TEC
Space Weather, Volume 24, Issue 6, June 2026.Abstract Ground‐based Global Navigation Satellite System (GNSS) receivers provide primary total electron content (TEC) measurements used to monitor ionospheric variability, yet their sparse distribution over oceanic and equatorial regions limits global coverage and model accuracy.
Maria Smirnova +4 more
wiley +1 more source
GRENet: GNSS‐Enhanced Radar Extrapolation Network for Precipitation Nowcasting
Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.Abstract Accurate precipitation nowcasting is one of the most challenging tasks in atmospheric sciences. The current methods of nowcasting primarily rely on inferring precipitation from radar reflectivity, which inevitably leads to uncertainties in forecasts due to the limitations of single radar data in capturing the detailed initial conditions of ...
Cuixian Lu +7 more
wiley +1 more source
The ethics of negative emissions
Global Sustainability, 2018 Limiting dangerous climate change is widely believed to require negative emissions. This prospect has sparked concerns about whether negative emissions could be scaled up quickly enough, along with concerns about their likely ethical costs. Building upon
Dominic Lenzi
doaj +1 more source
Drivers of Mid‐Latitude Quiet‐Time Longitude Variations in Ionospheric Density
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract The aim of this study is to provide an observational benchmark of mid‐latitude quiet‐time variability in winds, O/N2, and TEC across longitude and local time to provide a foundation for future model–data comparison studies. The quiet‐time ionospheric structure is not uniform but rather exhibits pronounced longitudinal and local‐time ...
K. R. Greer +3 more
wiley +1 more source