Results 51 to 60 of about 525 (158)

Determining precipitable water in the atmosphere of Iran based on GPS zenith tropospheric delays

Annals of Geophysics, 2014
Precipitable water (PW) is considered as one of the most important weather parameters in meteorology. Moreover, moisture affects the propagation of the Global Positioning System’s (GPS) signals.
Elaheh Sadeghi, Masoud Mashhadi-Hossainali, Hossein Etemadfard   +2 more
doaj   +1 more source

Satellite Remote Sensing of Alpine Vegetation Dynamics: Challenges and Perspectives

Global Change Biology, Volume 32, Issue 6, June 2026.
Satellite greening has become a key tool for monitoring alpine vegetation change, but a positive vegetation‐index trend is not an ecological observation in itself. This perspective shows that interpreting alpine greening requires addressing two sequential challenges: methodological complexity, which can bias trends during image processing, and ...
Arthur Bayle
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, Quanfei Wang, Yuxin Zheng, Xiaohong Zhang, Jiafeng Li, Xuanzhen Zhang, Galina Dick, Jonathan Jones   +7 more
wiley   +1 more source

Precipitable Water Vapor Retrieval Based on GNSS Data and Its Application in Extreme Rainfall

Remote Sensing
Water vapor plays a crucial role in maintaining global energy balance and water cycle, and it is closely linked to various meteorological disasters. Precipitable water vapor (PWV), as an indicator of variations in atmospheric water vapor content, has ...
Tian Xian, Ke Su, Jushuo Zhang, Huaquan Hu, Haipeng Wang   +4 more
doaj   +1 more source

A Global Model for Estimating Tropospheric Delay and Weighted Mean Temperature Developed with Atmospheric Reanalysis Data from 1979 to 2017

Remote Sensing, 2019
Precise modeling of tropospheric delay and weighted mean temperature (Tm) is critical for Global Navigation Satellite System (GNSS) positioning and meteorology.
Zhangyu Sun, Bao Zhang, Yibin Yao
doaj   +1 more source

Terrestrial Runoff Divides the Central Arctic Ocean and Shapes the Biologically Relevant Marine Lightscape

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract The Arctic Ocean is undergoing drastic changes in its sea ice cover, but is also optically complex. Observations from summer 2022 across the western Eurasian Basin, show increased colored dissolved organic matter (CDOM) absorption from terrestrial‐derived runoff within the Transpolar Drift (TPD) in the Amundsen Basin, extending down to a depth
Håkon Sandven, David McKee, Rafael Gonçalves‐Araujo, Rüdiger Röttgers, Anders F. Opdal, Philipp Assmy, Mats A. Granskog   +6 more
wiley   +1 more source

Analysis of Different Height Correction Models for Tropospheric Delay Grid Products over the Yunnan Mountains

Atmosphere
Accurate tropospheric delays are of great importance for both Global Navigation Satellite System (GNSS)-based positioning and precipitable water vapor monitoring.
Fangrong Zhou, Luohong Li, Yifan Wang, Zelin Dai, Chenchen Ding, Hui Li, Yunbin Yuan   +6 more
doaj   +1 more source

Modelling the Black Carbon Variability and Dynamics in Almaty, Kazakhstan, During Winter and Summer Seasons

Meteorological Applications, Volume 33, Issue 3, May/June 2026.
The study investigates the seasonal transport of black carbon (BC) from Almaty, Kazakhstan, to adjacent mountain areas. The radiative effects associated with BC are evaluated at the surface, within the atmosphere, and at the top of the atmosphere. ABSTRACT Large cities with poor air quality can affect surrounding areas through pollutant transport and ...
Madina Tursumbayeva, Giancarlo Ciarelli, Ludovico Di Antonio, Manuel Bettineschi, Daulet Kissebayev, Nassiba Baimatova   +5 more
wiley   +1 more source

Assessing Deposit‐Derived Pyroclastic Flow Hazard at Stromboli (Italy): 1. Reconstruction of the Dynamics of the 11 September 1930 Event

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Stromboli volcano (Italy) is known for its persistent explosive activity punctuated by more energetic explosions called paroxysms. During paroxysms, pyroclastic density currents, triggered by the gravitational instability of hot pyroclastic deposits, can occur.
Augusto Neri, Andrea Bevilacqua, Zeno Geddo, Lucas Corna, Mattia de’ Michieli Vitturi, Alessio Di Roberto, Federico Di Traglia, Massimo Pompilio, Antonella Bertagnini, Franco Flandoli, Alessandro Tadini   +10 more
wiley   +1 more source

A New Global ZTD Forecast Model Based on Improved LSTM Neural Network

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Zenith tropospheric delay (ZTD), consisting of zenith hydrostatic delay (ZHD) and zenith wet delay (ZWD), is a significant contributor to errors in precise positioning using the global navigation satellite system (GNSS) precise point positioning (PPP ...
Lin He, Yibin Yao, Chaoqian Xu, Zhang Huan, Feifei Tang, Changquan Ji, Zhuoya Liu, Wentan Wu   +7 more
doaj   +1 more source