Results 11 to 20 of about 167 (134)

Determining and Evaluating the Hydrological Signal in Polar Motion Excitation from Gravity Field Models Obtained from Kinematic Orbits of LEO Satellites

Remote Sensing, 2019
This study evaluates the gravity field solutions based on high-low satellite-to-satellite tracking (hl-SST) of low-Earth-orbit (LEO) satellites: GRACE, Swarm, TerraSAR-X, TanDEM-X, MetOp-A, MetOp-B, and Jason 2, by converting them into hydrological polar
Justyna Śliwińska, Jolanta Nastula
doaj   +2 more sources

Structure and Dynamics of the Ras al Hadd Oceanic Dipole in the Arabian Sea

Oceans, 2021
The Ras al Hadd oceanic dipole is a recurrent association of a cyclone (to the northeast) and of an anticyclone (to the southwest), which forms in summer and breaks up at the end of autumn.
Adam Ayouche, Charly De Marez, Mathieu Morvan, Pierre L’Hegaret, Xavier Carton, Briac Le Vu, Alexandre Stegner   +6 more
doaj   +2 more sources

Mass-related excitation of polar motion: an assessment of the new RL06 GRACE gravity field models

Earth, Planets and Space, 2018
The new Release-06 (RL06) Gravity Recovery and Climate Experiment (GRACE) gravity field solutions are evaluated by converting them into equatorial effective angular momentum functions (so-called excitation functions) for polar motion and comparing these ...
Franziska Göttl, Michael Schmidt, Florian Seitz   +2 more
doaj   +2 more sources

Joint short-term prediction of polar motion and length of day with multi-task deep learning methods

Earth, Planets and Space
Accurate prediction of Earth orientation parameters (EOPs) is critical for astro-geodynamics, high-precision space navigation, and positioning. However, the current model prediction accuracy for EOPs is significantly lower than the geodetic technical ...
Sonia Guessoum, Santiago Belda, Sadegh Modiri, Maria Karbon, José M. Ferrándiz, Justyna Śliwińska-Bronowicz, Harald Schuh   +6 more
doaj   +2 more sources

Role of Barystatic Sea Level Change in Global Mass Conservation and Its Excitation to Length‐Of‐Day Variations

Earth and Space Science
Barystatic sea level stores excess water mass from the atmosphere and land to maintain global mass conservations within the Earth system. Besides the secular contribution to global sea‐level rise, changes in barystatic sea level also play an important ...
Qiqi Shi, Yonghong Zhou, Cancan Xu, Xueqing Xu   +3 more
doaj   +2 more sources

Observation‐Driven Forecast of Global Terrestrial Water Storage and Evaluation for 2010–2024

Water Resources Research
Since 2002, the Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow‐On (GRACE/‐FO) satellite missions have provided unprecedented measurements of terrestrial water storage changes (TWSC).
Fupeng Li, Jürgen Kusche
doaj   +2 more sources

Evaluation of hydrological and cryospheric angular momentum estimates based on GRACE, GRACE-FO and SLR data for their contributions to polar motion excitation

Earth, Planets and Space, 2021
In geodesy, a key application of data from the Gravity Recovery and Climate Experiment (GRACE), GRACE Follow-On (GRACE-FO), and Satellite Laser Ranging (SLR) is an interpretation of changes in polar motion excitation due to variations in the Earth’s ...
Justyna Śliwińska, Jolanta Nastula, Małgorzata Wińska   +2 more
doaj   +1 more source

A sensitivity study of daytime net radiation during snowmelt to forest canopy and atmospheric conditions [PDF]

, 2004
This study investigates the dependence of net radiation at snow surfaces under forest canopies on the overlying canopy density. The daily sum of positive values of net radiation is used as an index of the snowmelt rate.
Pomeroy, J, Ek, M.B., Creutin, Jean-Dominique, Herve Andrieu, Jean-Dominique Creutin, Berne, Alexis, Essery, R. L. H.; id_orcid, Creutin, J.D., Sicart, J. E., Essery, R ; id_orcid, Andrieu, H., Delrieu, Guy, Link, T., Noone, D, Hardy, J., John Pomeroy, McGuffie, K, Irannejad, P, Richard Essery, Berne, A.D., Delrieu, G., Andrieu, Herve, Marks, D., Henderson-Sellers, A, Holtslag, A.A.M., Alexis Berne, Guy Delrieu, Pomeroy, J. W.   +27 more
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Analysis of the ITSG-GRACE daily models in the determination of polar motion excitation function

, 2023
The main aim of this study is to evaluate the usefulness of Institute of Geodesy at Graz University of Technology (ITSG) daily gravity field models in the determination of hydrological angular momentum (HAM) at nonseasonal time scales.
Nastula, Jolanta, Wińska, Małgorzata, Kur, Tomasz, Śliwińska, Justyna, Partyka, Aleksander   +4 more
core   +1 more source

Dynamics of Earth's Hadley Circulation [PDF]

, 2013
This thesis advances our understanding of the mechanisms controlling the Hadley circulation, and its interaction with eddies on planetary scales in particular. On Earth, and more generally in a rapidly rotating and differentially heated planet, planetary
Levine, Xavier Josselin
core   +1 more source