Results 81 to 90 of about 1,948 (180)

Evaluation of recent Global Geopotential Models over South Africa

South African Journal of Geomatics
This study evaluates the performance of three recent global geopotential models (GGMs) — WHU-SWPU-GOGR2022S, GOSG02S, and Tongji-GMMG2021S — over South Africa by comparing both height anomalies and free-air gravity anomalies derived from these models to data from 141 GPS/levelling points and 105,408 gravity data stations, respectively.
openaire   +2 more sources

Evaluation of recent global geopotential models based on GPS/levelling data over Afyonkarahisar (Turkey) [PDF]

, 2010
This study presents the evaluation of the global geo-potential models EGM96, EIGEN-5C, EGM2008(360) and EGM2008 by comparing model based on geoid heights to the GPS/levelling based on geoid heights over Afyonkarahisar study area in order to find the ...
Gullu, Mevlut, Yilmaz, Ibrahim, Turgut, Bayram, Yilmaz, Mustafa   +3 more
core  

Geoid modeling based on global geopotential models and digital terrain models

This paper presents a methodology for high-resolution, centimeter-accuracy geoid modeling in local areas using only publicly available data, eliminating the need for terrestrial gravity measurements. The approach synthesizes long- and short-wavelength components of the height anomaly, along with ellipsoidal correction, to efficiently determine geoid ...
Stanković, Marko, Grekulović, Sanja, Joksimović, Danilo, Naod, Sofija   +3 more
openaire   +1 more source

Accuracy assessment of high and ultra high-resolution combined GGMs, and recent satellite-only GGMs – Case studies of Poland and Ethiopia

Reports on Geodesy and Geoinformatics
The launch of dedicated satellite gravity missions (CHAMP, GRACE, GOCE, and GRACE–FO), as well as the availability of gravity data from satellite altimetry and terrestrial/airborne gravity measurements have led to a growing number of Global Geopotential ...
Godah Walyeldeen, Szelachowska Malgorzata, Gedamu Andenet A.   +2 more
doaj   +1 more source

Numerical analyzing of high-degree legendre functions for global geopotential models [PDF]

, 2009
Yeryuvarının gravite alanının belirlenmesi ve modellenmesi, fiziksel jeodezinin temel konularının başında yer alır. Jeodezik gözlemleri doğrudan etkileyen ve yeryuvarının şeklini belirleyen gravite alanı, çekim ve merkezkaç kuvvetlerinin bileşkesiyle ...
Avşar, Nevin Betül
core  

Evaluation of upper tropospheric geopotential height anomalies over the tropical and subtropical oceans in CMIP6 models using GNSS radio occultation observations

Environmental Research Communications
We investigate the influence of hydrometeor radiative effects on the winter (DJF) geopotential height anomaly (ZA) over the subtropical and tropical Pacific Oceans in both the Coupled Model Intercomparison Project phase 5 (CMIP5) and phase 6 (CMIP6 ...
J-L F Li, Kuan-Man Xu, Wei-Liang Lee, J H Jiang, Graeme Stephens, Jia-Yuh Yu, Gregory V Cesana, Maxwell Kelley   +7 more
doaj   +1 more source

Localized General Vertical Coordinates for Quasi‐Eulerian Ocean Models: The Nordic Overflows Test‐Case

Journal of Advances in Modeling Earth Systems
A generalized methodology to deploy different types of vertical coordinate system in arbitrarily defined time‐invariant local areas of quasi‐Eulerian numerical ocean models is presented.
Diego Bruciaferri, Catherine Guiavarc'h, Helene T. Hewitt, James Harle, Mattia Almansi, Pierre Mathiot, Pedro Colombo   +6 more
doaj   +1 more source

Spatiotemporal weather forecasting via multi-scale graph neural networks and latent diffusion models. [PDF]

PLoS One
Wu Z.
europepmc   +1 more source

Rising geopotential height under global warming [PDF]

Geopotential height (H) is a widely used metric for atmospheric circulation. H has been reported to rise under global warming, but the amplitude and mechanism of this rise are not clear.
Y Liu (4702669), Y Ding (7760453), Y Hu (6099812), M Collins (7710758), F Song (7332653), C He (7754612), X Jiang (7070438), W Zhou (7715300), X Chen (7409627)   +8 more
core  

Regional drying over the Western U.S. driven by enhanced atmospheric subsidence amid global moistening from 1980 to 2020. [PDF]

Nat Commun
Ding Q, Shaw T, Wang H, Baxter I, Zhu J.
europepmc   +1 more source