Results 11 to 20 of about 14,203 (319)
Determination of a high spatial resolution geopotential model using atomic clock comparisons [PDF]
Journal of Geodesy, pp 1-15 (2017), 2016 Recent technological advances in optical atomic clocks are opening new perspectives for the direct determination of geopotential differences between any two points at a centimeter-level accuracy in geoid height. However, so far detailed quantitative estimates of the possible improvement in geoid determination when adding such clock measurements to ...
G. Lion +5 more
arxiv +3 more sources
A Shallow-water Model Exploration of Atmospheric Circulation on Sub-Neptunes: Effects of Radiative Forcing and Rotation Period [PDF]
The Planetary Science Journal, 2023 Sub-Neptune-type exoplanets are abundant in our Galaxy yet have no solar system analogs. They exist in a broad range of stellar forcing and rotational regimes that are distinctly different from solar system planets and more commonly studied hot Jupiters.
Ekaterina Landgren +4 more
doaj +2 more sources
Estimation of vertical datum offset for the South African vertical datum, in relation to the international height reference system [PDF]
Geodetski Vestnik, 2021 The vertical offset and the geopotential value over South Africa is estimated on the four fundamental benchmarks in relation to the international height reference system (IHRS).
Matthews Siphiwe Mphuthi +1 more
doaj +1 more source
Remote Sensing, 2022 Applications of optical clocks in physical geodesy for determining geopotential are of increasing interest to scientists as the accuracy of optical clocks improves and the clock size becomes more and more compact.
Anh The Hoang +4 more
doaj +1 more source
Measuring Height Difference Using Two-Way Satellite Time and Frequency Transfer
Remote Sensing, 2022 According to general relativity theory (GRT), the clock at a position with lower geopotential ticks slower than an identical one at a position with higher geopotential.
Peng Cheng +5 more
doaj +1 more source
Persistent positive anomalies in geopotential heights promote wildfires in western North America
Journal of Climate, 2022 During summer, persistent positive anomalies (PPAs) of mid-tropospheric geopotential heights in North America are often associated with extreme weather, including heatwaves.
Aseem R. Sharma +3 more
semanticscholar +1 more source
On approximations to geopotential and wind-field correlation structures [PDF]
Tellus A: Dynamic Meteorology and Oceanography, 1985 The purpose of this note is to show that a correlation structure model which is rigorously derived from simple stochastic assumptions for geopotential anomalies, automatically satisfies the essential properties of correlation representations as they are used in multivariate optimal interpolation and diagnostic studies.
H. Jean Thiébaux
openaire +4 more sources
IEEE Access, 2023 Orthometric height datum systems are critical in the geodetic community. Nonetheless, individual nations or local regions maintain their distinct height systems.
Anh The Hoang, Ziyu Shen, Wen-Bin Shen
doaj +1 more source
Is the geopotential directly measurable [PDF]
Geodetski Glasnik, 2016 It has been pointed out by the great Swedish geodesist Arne Bjerhammar and others around1985 that it is possible to replace the classical method of spirit leveling for determining differences of the geopotential by a much more direct and elegant method ...
Helmut Moritz
doaj +1 more source
Euroregions in the Podrinje region [PDF]
Glasnik Srpskog Geografskog Društva, 2008 Regionalization is a contemporary conception of a development within a society. We are interested in cooperation at regions whose area is intersected by the national border. One of those borders is the Drina River that in different periods had changeable
Tošić Branka, Todorović Marina
doaj +1 more source