Results 31 to 40 of about 711,710 (171)

Empirical modeling of tropospheric delays with uncertainty [PDF]

Geoscientific Model Development
Accurate modeling of tropospheric delay is important for high-precision data analysis of space geodetic techniques, such as the Global Navigation Satellite System (GNSS).
J. Wang, J. Wang, J. Wang, J. Chen, J. Chen, J. Chen, Y. Zhang   +6 more
doaj   +1 more source

Accuracy improvement of tropospheric delay correction models in space geodetic data. Case study: Egypt

Geodesy and Cartography, 2014
The tropospheric delay still remains a limiting factor to the accuracy of space based positioning techniques. The estimation of station positioning, especially height component, which is particularly important for more applications is susceptible to ...
Sobhy Abdel Monem Younes, Hafez Abbas Afify   +1 more
doaj   +1 more source

Estimating the summertime tropospheric ozone distribution over North America through assimilation of observations from the Tropospheric Emission Spectrometer [PDF]

, 2008
We assimilate ozone and CO retrievals from the Tropospheric Emission Spectrometer (TES) for July and August 2006 into the GEOS-Chem and AM2-Chem models.
Parrington, M., Thompson, A. M., Jones, D. B. A., Witte, J. C., Horowitz, L. W., Bowman, K. W., Tarasick, D. W.   +6 more
core   +1 more source

REAL-TIME TROPOSPHERIC PRODUCT ESTABLISHMENT AND ACCURACY ASSESSMENT IN CHINA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Tropospheric delay has always been an important issue in Global Navigation Satellite System (GNSS) processing. Empirical tropospheric delay models are difficult to simulate complex and volatile atmospheric environments, resulting in poor accuracy of the ...
M. Chen, M. Chen, M. Chen, J. Guo, J. Wu, J. Wu, W. Song, W. Song, D. Zhang, D. Zhang   +9 more
doaj   +1 more source

Evaluation of InSAR Tropospheric Delay Correction Methods in a Low-Latitude Alpine Canyon Region

Remote Sensing, 2023
Tropospheric delay error must be reduced during interferometric synthetic aperture radar (InSAR) measurement. Depending on different geographical environments, an appropriate correction method should be selected to improve the accuracy of InSAR ...
Yanxi Zhao, Xiaoqing Zuo, Yongfa Li, Shipeng Guo, Jinwei Bu, Qihang Yang   +5 more
doaj   +1 more source

Aboveground herbivory elevates belowground rhizosphere volatile organic compound concentrations in ambient and polluted air, independent of volatile sampling methodology

PLANTS, PEOPLE, PLANET, EarlyView.
The effect of air pollution on plants is still underexplored, especially belowground. We used a field facility that released diesel exhaust and ozone at concentrations equivalent to those near a busy road in Reading, UK, to measure belowground gas exchange of Scots pine together with feeding by large pine weevils, a major pest of conifers.
Tihomir Simin, Luke Bell, James M. W. Ryalls, Robbie D. Girling, Oliver E. I. Welling, Neil J. Mullinger, Muhammad Usman Rasheed, James D. Blande   +7 more
wiley   +1 more source

Asymmetry in the effect of North Atlantic sea surface temperature on the eddy‐driven jet

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Projections of climate over Europe and the Atlantic are uncertain due to the uncertainty surrounding future changes in North Atlantic sea surface temperatures (SSTs). Here, we demonstrate that warming in the North Atlantic Ocean is linked to a transition to a negative phase of the North Atlantic Oscillation, as well as to an equatorward displacement of
Paul‐Arthur Monerie, Jon Robson, Christopher O'Reilly, Rowan Sutton   +3 more
wiley   +1 more source

Applicability Analysis of InSAR Tropospheric Delay Correction for Landslide Monitoring Considering Periodicity Characteristics—Case Study on Southwest Mountainous Region

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Tropospheric delay is a major limitation in interferometric synthetic aperture radar (InSAR) for measuring landslide deformation. It exhibits complex spatial–temporal variability, stochastic behavior, and is particularly difficult to model in the ...
Li Zhang, Daqing Ge, Jie Dong, Xiangxing Wan, Bin Liu, Lu Zhang, Yangyang Chen, Yu Wang, Gaoyun Shen   +8 more
doaj   +1 more source

Multiscale numerical sensitivity simulations of a mesoscale gravity‐wave event

Quarterly Journal of the Royal Meteorological Society, EarlyView.
High‐resolution WRF simulations of the February 14–15, 1992 STORM‐FEST event show that mesoscale gravity‐wave genesis occurs via geostrophic adjustment within an upper‐level unbalanced jet, while wave ducting governs maintenance. High‐resolution (1 km), improved physical parameterization, and targeted sensitivity simulations demonstrate that upstream ...
Rajan Bhandari, Michael L. Kaplan, Ananya Sen   +2 more
wiley   +1 more source

Tropospheric delay in microwave propagation in Nigeria [PDF]

, 2018
Satellite communication systems suffer from the systematic error of tropospheric delay. Accurate estimation of this delay is essential for communication budget and planning.
Dada, Babatunde J., Oluyamo, Sunday, Ogunjo, Samuel, Fuwape, Ibiyinka   +3 more
core