Results 111 to 120 of about 2,142 (216)

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

First Detection of the Two‐Dimensional Vertical Propagation of Traveling Ionospheric Disturbances Associated With Atmospheric Gravity Waves in the Martian Ionosphere

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract We report the detection of a traveling ionospheric disturbance (TID) captured by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) Active Ionospheric Sounding (AIS) instrument aboard the Mars Express spacecraft at 150–250 km altitude.
Rong Tian, Beatriz Sánchez‐Cano, Chunhua Jiang, Mark Lester, Dikshita Meggi, Simon Joyce, Christopher M. Fowler, Andrea Cicchetti, Mats Holmstrom, David Andrews, Pedro Machado   +10 more
wiley   +1 more source

Assessment of BDS-3 PPP-B2b Service and Its Applications for the Determination of Precipitable Water Vapour

Atmosphere
The precise point positioning (PPP) service via the B2b signal (PPP-B2b) on the BeiDou Navigation Satellite System (BDS) provides high-accuracy orbit and clock data for global navigation satellite systems (GNSSs), enabling real-time atmospheric data ...
Xiaoming Wang, Yufei Chen, Jinglei Zhang, Cong Qiu, Kai Zhou, Haobo Li, Qiuying Huang   +6 more
doaj   +1 more source

Tropospheric Correction for InSAR Using Interpolated ECMWF Data and GPS Zenith Total Delay From the Southern California Integrated GPS Network

, 2010
A tropospheric correction method for Interferometric Synthetic Aperture Radar (InSAR) was developed using profiles from the European Centre for Medium-Range Weather Forecasts (ECMWF) and Zenith Total Delay (ZTD) from the Global Positioning System (GPS ...
Webb, Frank, Fishbein, Evan, Moore, Angelyn, Björndahl, Fredrik, L\uf6fgren, Johan, Webb, Frank,, Fielding, Eric, Moore, Angelyn,, Bj\uf6rndahl, Fredrik, Björndahl, Fredrik,, Fielding, Eric,, Löfgren, Johan, Löfgren, Johan,, Fishbein, Evan,   +13 more
core   +1 more source

Impact of a high density GPS network on the operational forecast [PDF]

Advances in Geosciences, 2005
Global Positioning System Zenith Total Delay (GPS ZTD) can provide information about the water vapour in atmosphere. Its assimilation into the analysis used to initialize a model can then improve the weather forecast, giving the right amount of moisture ...
C. Faccani, R. Ferretti, R. Ferretti, R. Pacione, T. Paolucci, F. Vespe, L. Cucurull   +6 more
doaj  

Transformation of Neill Mapping Function For GPS Tropospheric Delay [PDF]

, 2011
The refraction of the Global Positioning System (GPS) signal as it passes through the neutral atmosphere from the satellite to the earth can be referred as GPS tropospheric delay, which causes longer distance traveled by the signal.
Sakidin, Hamzah, Hamzah , Sakidin, Tay, Choo Chuan   +2 more
core  

Alternative Strategy for Estimating Zenith Tropospheric Delay from Precise Point Positioning

, 2017
. This study considered zenith total delay (ZTD) estimation from precise point positioning (PPP) based on GPS only (PPP GPS), GLONASS only (PPP GLO), and GPS+GLONASS (PPP GPS+GLO) using both a conventional strategy when applying a model for the ...
Jareer Mohammed, Richard M. Bingley, Chris Hill, Terry Moore   +3 more
core   +1 more source

The effect of UNBabc mapping function modification to GPS tropospheric delay [PDF]

, 2008
Tropospheric delay refers to the refraction of the Global Positioning System (GPS) signal as it passes through the neutral atmosphere from the satellite to the earth, which causes longer distance traveled by the signal.
Sakidin, Hamzah, Md Nooraini, Mohd Salmi, Matori, Abd. Nasir, Mohamed Shariff, Abdul Rashid, Ahamd, Asmala, Mohamed, Azhari, Abu Bakar, Mohd Rizam   +6 more
core   +1 more source

A Novel Enhancement of the MIMIC Remote Sensing Water Vapor Product and Its Application in GNSS Positioning

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Tropospheric delay plays a crucial role in global navigation satellite systems (GNSS) positioning, climate monitoring, and weather forecasting. In particular, in high-precision GNSS applications such as precise point positioning (PPP), prior tropospheric
Ranran Jia, Yan Xu, Nan Jiang, Zeqi Li, Tianhe Xu, Harald Schuh   +5 more
doaj   +1 more source

Forecasting rainfall events based on zenith wet delay time series utilizing eXtreme Gradient Boosting (XGBoost)

Accurate rainfall prediction is vital for mitigating flood and storm disasters as well as for planning agricultural activities and water resources management.
Dehvari, Masood, Forootan, Ehsan; id_orcid, Farzaneh, Saeed   +2 more
core   +1 more source