Results 101 to 110 of about 16,098 (281)

Evaluation of new release Global Geopotential Model (GGMS) over East Malaysia

GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY
Global Geopotential Model (GGM) is a mathematical representation of the Earth’s gravity field and geoid, which is developed to provide accurate information about the variations in the Earth’s gravitational potential across the entire globe. Recently numerous organizations and research centres have developed multi GGMs derived from several types of ...
Noorhurul A. Othman, Muhammad F. Pa’suya, Ami H. Md Din, Mohamad A. Che Aziz, S. Hazelin Noor Azmin Nurul, A. Abd Samad Mohd, Mohd A. Abdullah   +6 more
openaire   +1 more source

Sources of Subseasonal Predictability for Precipitation in South America Based on Model Experiments

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract This study investigates the sources of predictability underlying subseasonal precipitation skill over South America in existing subseasonal prediction systems. Using subseasonal re‐forecasts from the NCAR‐CESM2 model, we demonstrate that significant skill persists even when interannual variability is removed.
Kathy Pegion, Emily Becker, Ben P. Kirtman   +2 more
wiley   +1 more source

The Moist Static Energy Budget of Australian Summer Monsoon Bursts in Climate Models: Insights From Present and Warming Climate Scenarios

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract This study investigates the complex dynamics of burst evolution in the Australian summer monsoon under present‐day and warmer climate conditions. Using reanalysis data, historical atmosphere‐only simulations (AMIP), and simulations with uniformly increased sea surface temperatures (+4K; AMIP+4K), we examine how seasonal‐mean precipitation and ...
Sarthak Mohanty, Christian Jakob, Martin S. Singh   +2 more
wiley   +1 more source

Subgrid-Scale Topographic Effects on Radiation for Global Weather Forecast Models

Atmosphere
The incoming solar radiation arriving the Earth’s surface is strongly influenced by surface terrain. Conventional global weather forecast models, with grid scales of about 10 km, lack the resolution to accurately capture terrain-induced variations.
Sunghye Baek, Junghan Kim
doaj   +1 more source

How to reach a few percent level in determining the Lense-Thirring effect?

, 2004
In this paper we discuss and compare a node-only LAGEOS-LAGEOS II combination and a node-only LAGEOS-LAGEOS II-Ajisai-Jason1 combination for the determination of the Lense-Thirring effect. The new combined EIGEN-CG01C Earth gravity model has been adopted.
A. Sengoku, A. Sengoku, B.D. Tapley, C. Lämmerzahl, C.M. Will, C.W.F. Everitt, Ch. Reigber, D. Lucchesi, D. Lucchesi, D.G. Kubitschek, E. Doornbos, E.C. Pavlis, E.C. Pavlis, Eelco Doornbos, F.A. Abd El-Salam, I. Ciufolini, I. Ciufolini, I. Ciufolini, I. Ciufolini, I. Ciufolini, J.A. Marshall, J.A. Marshall, J.C. Ries, K. Nordtvedt, L. Iorio, L. Iorio, L. Iorio, L. Iorio, L. Iorio, L. Iorio, L. Iorio, L. Stella, L.I. Schiff, Lorenzo Iorio, P.G. Antreasian, S.B. Luthcke   +35 more
core   +1 more source

Gis-Based Accuracy Assessment of Global Geopotential Models: A Case Study of Egypt

American Journal of Geographic Information System, 2018
Geoid modelling is a fundamental procedure in geomatics and geosciences applications to estimate the orthometric heights from the ellipsoidal heights measured using Global Navigation Satellite Systems (GNSS) observations. In case of no local geoid model is available for any area, a Global Geopotential Model (GGM) is utilized for height conversion ...
Ahmed El Shouny, Essam M. Al-Karagy, Hoda F. Mohamed, Gomaa M. Dawod   +3 more
openaire   +1 more source

Evaluation of GFSv16 for Near‐Real‐Time Data Impact Studies During the Atmospheric River Reconnaissance Program 2022

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract Landfalling Atmospheric Rivers (ARs) are crucial for the water resources on the U.S. West Coast, but can also cause hazardous weather and water events there. Yet, accurately predicting AR impacts on precipitation remains a challenge. This study investigates the influence of dropsonde data from AR Reconnaissance (AR Recon) on improving weather ...
Vijay Tallapragada, Xingren Wu, Minghua Zheng, L. Delle Monache, F. Martin Ralph, Keqin Wu, Xiujun Wang, M. M. Nageswararao, Jia Wang, Anna M. Wilson, Jason Cordeira, Julie Kalansky, Daniel Steinhoff, Patrick Mulrooney   +13 more
wiley   +1 more source

Weather and Climate Extremes: Simplex, Dynamical Systems and Hull Clustering

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract A novel method is developed and applied to identify high‐dimensional weather and climate extremes located on the envelope of the data set within its state space. The method is based on formulating and integrating dynamical systems whose attractive set, that is, stable fixed points, is constituted of extreme states residing on the convex hull ...
A. Hannachi, K. Finke, N. Trendafilov, D. Monselesan, J. Risbey, C. Chapman, L. Chafik   +6 more
wiley   +1 more source

DETERMINATION OF EFFECTIVE ELASTIC THICKNESS OF THE COLOMBIAN ANDES USING SATELLITE-DERIVED GRAVITY DATA

Earth Sciences Research Journal, 2010
<p align="left">Gravity anomaly values derived from Global Geopotential Models (calculated from the CHAMP and GRACE satellite missions), are compared with free air ground gravity data to find the best representation of surface data.
Casallas1 Iván, Galán Remy
doaj  

Comparison of global geopotential models from the champ and grace missions for regional geoid modelling in Turkey

Studia Geophysica et Geodaetica, 2009
The continuous efforts on establishment and modernization of the geodetic control in Turkey include a number of regional geoid models that have been determined since 1976. The recently released gravimetric Geoid of Turkey, TG03, is used in geodetic applications where GPS-heights need to be converted to the local vertical datum.
Erol, B., Sideris, M., Çelik, R.
openaire   +3 more sources