Results 71 to 80 of about 1,078 (176)

Sulfur Dioxide Point Sources Remain Important for Daytime Plume‐Scale New Particle Formation in the United States: Case Study for Gary, Indiana During the Summer 2023 AEROMMA Aircraft Campaign

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 19, 16 October 2026.
Abstract Plumes from sulfur dioxide (SO2) point sources have been shown to be significant contributors to new particle formation (NPF), but SO2 emissions in the United States (US) have decreased drastically by ∼10× since the early 2000s. We present observations of plume‐scale NPF from SO2 point sources over the industrial hub in Gary, Indiana and ...
En Li, Samuel E. O’Donnell, Adam T. Ahern, Kelvin H. Bates, Charles A. Brock, Wyndom S. Chace, Matthew M. Coggon, Emily V. Fischer, Jessica B. Gilman, Georgios I. Gkatzelis, Han N. Huynh, Emily R. Lill, Ming Lyu, Ann M. Middlebrook, Alison M. Piasecki, Jeff Peischl, Ilana B. Pollack, Andrew W. Rollins, Nell B. Schafer, Chelsea E. Stockwell, Victoria Treadaway, Carsten Warneke, Eleanor M. Waxman, Lu Xu, Kristen Zuraski, Robin G. Stevens, Shantanu H. Jathar, Jeffrey R. Pierce   +27 more
wiley   +1 more source

Assessing Co‐Located NISAR and Sentinel‐1 Observations for Atmospheric Characterization

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 19, 16 October 2026.
Abstract Tropospheric delay remains one of the largest sources of uncertainty in repeat‐pass Interferometric Synthetic Aperture Radar (InSAR) measurements, while accurate three‐dimensional deformation retrieval continues to be limited by the geometry of current spaceborne SAR systems.
Shadi Oveisgharan, Paul Rosen, Christopher Wells, Emre Havazli   +3 more
wiley   +1 more source

An Adaptive Multipath Mitigation Filter for GNSS Applications

EURASIP Journal on Advances in Signal Processing, 2008
Global navigation satellite system (GNSS) is designed to serve both civilian and military applications. However, the GNSS performance suffers from several errors, such as ionosphere delay, troposphere delay, ephemeris error, and receiver noise and ...
Jyh-Ching Juang, Chung-Liang Chang
doaj   +1 more source

Empirical Modeling of Tropospheric Delays and Uncertainty

Abstract. Accurate modeling of troposphere delay is important for high-precision data analysis of space geodetic techniques, such as the Global Navigation Satellite System (GNSS). The empirical troposphere delay models provide zenith delays with an accuracy of 3 to 4 cm globally and do not rely on external meteorological input.
Jungang Wang, Junping Chen, Yize Zhang
openaire   +2 more sources

Small Scale Variability in the Wet Troposphere Impacts the Interpretation of SWOT Satellite Observations

Geophysical Research Letters
The Surface Water and Ocean Topography (SWOT) mission offers new insights into submesoscale ocean processes. Realizing this requires careful consideration of other geophysical signals such as the signal delay induced by water vapor in the troposphere ...
Andrea Hay, Christopher Watson, Benoit Legresy, Matt King, Jack Beardsley   +4 more
doaj   +1 more source

DNS (v1.0): an open-source ray-tracing tool for space geodetic techniques [PDF]

Geoscientific Model Development
We have developed an open-source ray-tracing tool for space geodetic techniques. The software uses the geometric optics approximation to calculate the signal travel time delay induced by the atmosphere between two given points.
F. Zus, K. Balidakis, K. Balidakis, A. H. Dogan, R. Thundathil, R. Thundathil, G. Dick, J. Wickert, J. Wickert   +8 more
doaj   +1 more source

Impact of tropospheric modelling on GNSS vertical precision: an empirical analysis based on a local active network

International Journal of Digital Earth, 2018
The troposphere affects Global Navigation Satellite System (GNSS) signals due to the variability of the refractive index. Tropospheric delay is a function of the satellite elevation angle and the altitude of the GNSS receiver and depends on the ...
Mª Selmira Garrido, Mª Clara de Lacy, Ana Mª Rojas   +2 more
doaj   +1 more source

The thermotidal exciting function for water vapour absorption of solar radiation

Annals of Geophysics, 1976
The thermotidal exciting function J is considered, for<br />the absorption of solar radiation by water vapour, according to the model<br />derived by Siebert.
M. BONAFEDE
doaj   +1 more source

Modeling and Forecasting the GPS Zenith Troposphere Delay in West Antarctica Based on Different Blind Source Separation Methods and Deep Learning. [PDF]

Sensors (Basel), 2020
Zhang Q, Li F, Zhang S, Li W.
europepmc   +1 more source

Comparison of Tropospheric Horizontal Gradients Modeling Methods in LEO Constellation Augmented GNSS Precise Point Positioning

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
With the improvement in GNSS data processing accuracies, the selection of optimal asymmetric troposphere delay modeling method becomes essential, especially during the period of severe weather events and with the development of low Earth orbit (LEO ...
Xinyu Zhang, Wenwu Ding, Xiaochuan Qu, Hongjin Xu, Xuanzhao Tan, Yunbin Yuan   +5 more
doaj   +1 more source