Results 111 to 120 of about 120,602 (222)
Interferometric Synthetic Aperture Radar (InSAR) for Monitoring Seasonal Snow
Water Resources Research, Volume 62, Issue 9, September 2026.Abstract Interferometric Synthetic Aperture Radar (InSAR) offers a potential pathway for measuring seasonal snow water equivalent (SWE) and snow depth at spatial and temporal scales needed for basin‐scale hydrology. First proposed for seasonal snow more than 25 years ago, InSAR uses repeat‐pass radar phase differences to estimate changes in SWE or ...
Jack Tarricone +17 more
wiley +1 more source
Biases and Uncertainties in Radiosonde‐Based Precipitable Water Vapor
Earth and Space Science, Volume 13, Issue 9, September 2026.Abstract Precipitable water vapor (PWV) plays an important role in weather and climate phenomena. Accurate PWV measurements based on radiosonde observations are essential for assessing remote‐sensing measurements and long‐term trends. This study examines the performance of PWV algorithms, including their intrinsic biases and their sensitivity to ...
António P. Ferreira +2 more
wiley +1 more source
The Four Key Challenges of Advanced Multisensor Navigation and Positioning [PDF]
, 2014 The next generation of navigation and positioning systems must provide greater accuracy and reliability in a range of challenging environments to meet the needs of a variety of mission-critical applications.
Martin, H +11 more
core +1 more source
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
New applications and opportunities of GNSS meteorology
, 2020 Water vapor content of the atmospheric low layer, up to about 18 km, known as troposphere or neutral atmosphere, affects GNSS (Global Navigation Satellite System) signals by lowering their propagation velocities with respect to vacuum. A diminished speed results in a time delay in the signal propagation along the satellite-receiver path, that ...
openaire +1 more source
Space Weather, Volume 24, Issue 9, September 2026.Abstract The high‐latitude ionosphere exhibits rapid spatial and temporal variability during geomagnetically active periods, creating persistent challenges for accurate nowcasts. The High‐latitude Workbox for the Ionosphere (HAWK‐I) is a real‐time ionosphere nowcast and specification system designed for operational deployment to address these ...
Patrick Dandenault +7 more
wiley +1 more source
, 2018 <p>This release has several improvements in different dimensions, addition of new features and bug fixes:</p> Improvements in Accuracy: <ul> <li>Part of the RTKLIB core library has been integrated into GNSS-SDR.
Gerald LaMountain +25 more
core +1 more source
Space Weather, Volume 24, Issue 9, September 2026.Abstract Equatorial plasma bubbles (EPBs) are typically nighttime ionospheric irregularities, and their persistence into daytime sectors remains insufficiently understood. Here, we investigate long‐lived EPB‐related plasma depletion structures over the Pacific sector during the recovery phase of the 23–25 April 2023 geomagnetic storm using Formosa ...
Hailun Ye +12 more
wiley +1 more source
Water Resources Research, Volume 62, Issue 9, September 2026.Abstract Ground‐based Global Navigation Satellite System (GNSS) vertical displacements are increasingly used to infer terrestrial water storage (TWS) variations, but their applicability remains uncertain where weak hydrological signals coexist with non‐hydrological deformation processes.
Gaohong Yin +5 more
wiley +1 more source
Diversity and Distributions, Volume 32, Issue 9, September 2026.ABSTRACT Aim Climate warming, human modification and global connectivity are eroding the abiotic barriers (i.e., climatic filtering and low propagule pressure) that have traditionally limited the spread of non‐native species in mountain ecosystems. Meanwhile, these global changes are also reshaping native plant communities, potentially weakening their ...
Greta La Bella +10 more
wiley +1 more source