Results 31 to 40 of about 221,487 (235)

Zenith Wet Delay (ZWD) Seasonal Correlation with Rainfall in Cikapundung River Discharge, North Bandung Region, Indonesia [PDF]

E3S Web of Conferences, 2019
In a GPS survey study, the biases produced by the ionosphere and troposphere layers are known as ionospheric biases and troposphere bias. The distance deviation due to the slowing travel time of GPS signals in troposphere is commonly referred to as ...
Kuntjoro Wedyanto, Wijaya D.D., Pramansyah A., Tanuwijaya Z.A.J., Pradipta Dhota   +4 more
doaj   +1 more source

Kinematic ZTD Estimation from Train-Borne Single-Frequency GNSS: Validation and Assimilation

Remote Sensing, 2021
Water vapour is one of the most important parameters utilized for the description of state and evolution of the Earth’s atmosphere. It is the most effective greenhouse gas and shows high variability, both in space and time.
Matthias Aichinger-Rosenberger, Robert Weber, Natalia Hanna   +2 more
doaj   +1 more source

Using ground-based GPS to characterize atmospheric turbulence [PDF]

, 2009
A new method for measuring and studying atmospheric turbulence is presented. The method uses data from a local network of GPS receivers. The GPS data are processed in a way that assures that the estimated zenith total delays (ZTD) contain the effects of ...
Davis, J.L., Hill, E.M., Nilsson, Tobias
core   +1 more source

GPS Zenith Total Delays and Precipitable Water in comparison with special meteorological observations in Verona (Italy)during MAP-SOP

Annals of Geophysics, 2002
Continuous meteorological examination of the Pre-Alpine zones in Northern Italy (Po Valley)is important for determination of atmospheric water cycles connected with floods and rainfalls.During a special meteorological observing period (MAP-SOP ...
S. Corradini, R. Santangelo, S. Pugnaghi, L. Lombroso, P. Frontero, S. Fazlagic, M. Boccolari, S. Teggi   +7 more
doaj   +1 more source

Retrieval of a High-Precision Drought Monitoring Index by Using GNSS-Derived ZTD and Temperature

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Potential evapotranspiration (PET) is a key parameter for calculating drought monitoring index that is generally difficult to obtain. In addition, PET has low spatial resolution and can only be obtained at a site-based point.
Qingzhi Zhao, Yongjie Ma, Zufeng Li, Yibin Yao   +3 more
doaj   +1 more source

A new zenith hydrostatic delay model for real-time retrievals of GNSS-PWV [PDF]

Atmospheric Measurement Techniques, 2021
The quality of the zenith hydrostatic delay (ZHD) could significantly affect the accuracy of the zenith wet delay (ZWD) of the Global Navigation Satellite System (GNSS) signal, and from the ZWD precipitable water vapor (PWV) can be obtained.
L. Li, L. Li, S. Wu, S. Wu, K. Zhang, K. Zhang, K. Zhang, X. Wang, W. Li, W. Li, Z. Shen, Z. Shen, D. Zhu, D. Zhu, Q. He, Q. He, M. Wan, M. Wan   +17 more
doaj   +1 more source

Assessment of the potential of MERIS near-infrared water vapour products to correct ASAR interferometric measurements [PDF]

, 2006
Atmospheric water vapour is a major limitation for high precision Interferometric Synthetic Aperture Radar (InSAR) applications due to its significant impact on microwave signals.
Albert, P., Bennartz, R., Cross, P., Fischer, J., Li, Z., Muller, J.P.   +5 more
core   +1 more source

General Survey of Large-scale Land Subsidence by GACOS-Corrected InSAR Stacking: Case Study in North China Plain [PDF]

Proceedings of the International Association of Hydrological Sciences, 2020
Satellite-based InSAR (Interferometric Synthetic Aperture Radar) provides an effective way to measure large-scale land surface motions. Currently, the atmospheric phase delay is one of the most critical issues in InSAR deformation monitoring.
R. Xiao, R. Xiao, C. Yu, Z. Li, Z. Li, C. Song, X. He   +6 more
doaj   +1 more source

A Case Study on the Impact of Ensemble Data Assimilation with GNSS-Zenith Total Delay and Radar Data on Heavy Rainfall Prediction

Monthly Weather Review, 2020
The performance of a numerical weather prediction model using convective-scale ensemble data assimilation with ground-based global navigation satellite systems-zenith total delay (ZTD) and radar data is investigated on a heavy rainfall event that ...
Shu‐Chih Yang, Zih-Mao Huang, Ching-Yuang Huang, Chih-Chien Tsai, T. Yeh   +4 more
semanticscholar   +1 more source

Performance of two Askaryan Radio Array stations and first results in the search for ultra-high energy neutrinos [PDF]

, 2016
Ultra-high energy neutrinos are interesting messenger particles since, if detected, they can transmit exclusive information about ultra-high energy processes in the Universe. These particles, with energies above $10^{16}\mathrm{eV}$, interact very rarely.
Allison, P., ARA Collaboration, Bard, R., Beatty, J. J., Besson, D. Z., Bora, C., Chen, C. -C., Chen, C. -H., Chen, P., Christenson, A., Connolly, A., Davies, J., Duvernois, M., Fox, B., Gaior, R., Gorham, P. W., Hanson, K., Haugen, J., Hill, B., Hoffman, K. D., Hong, E., Hsu, S. -Y., Hu, L., Huang, J. -J., Huang, M. -H. A., Ishihara, A., Karle, A., Kelley, J. L., Kennedy, D., Kravchenko, I., Kuwabara, T., Landsman, H., Laundrie, A., Li, C. -J., Liu, T. C., Lu, M. -Y., Macchiarulo, L., Mase, K., Meures, T., Meyhandan, R., Miki, C., Morse, R., Nam, J., Nichol, R. J., Nir, G., Novikov, A., O'Murchadha, A., Pfendner, C., Ratzlaff, K., Relich, M., Richman, M., Ritter, L., Rotter, B., Sandstrom, P., Schellin, P., Seckel, D., Shiao, Y. -S., Shultz, A., Stockham, J., Stockham, M., Touart, J., Varner, G. S., Wang, M. -Z., Wang, S. -H., Yang, Y., Yoshida, S., Young, R.   +66 more
core   +3 more sources