Results 21 to 30 of about 14,203 (319)

Estimation of Geopotential Value W0 for the Geoid and Local Vertical Datum Parameters

open access: yesRemote Sensing, 2023
Unification of the global vertical datum has been a key problem to be solved for geodesy over a long period, and the main challenge for unifying the global vertical datum system is to determine the geopotential value W0 of the geoid and to calculate the ...
Xinyu Liu   +4 more
doaj   +1 more source

Identification Humidity Resources and Course of Super Heavy Precipitation In Bushehr Province [PDF]

open access: yesجغرافیا و توسعه, 2009
In this paper, humidity advection maps of sea level and 850 hpa and geopotential height of sea level pressure and 500 hpa level were drawn and studied for 5 types of above 100 mm precipitation in the Bushehr province.
gavad khoshal   +2 more
doaj   +1 more source

WINTER EXTREME EVENTS – ROMANIAN CARPATHIAN AVALANCHES [PDF]

open access: yesAerul şi Apa: Componente ale Mediului, 2017
The study presents a statistics of avalanche cases recorded in Romanian Carpathians over the years, most of them since February 2004, when the National Meteorological Administration program for snow and avalanches started, but also from Mountain Rescue ...
A. PAŞOL, C. GRECU, U. RECKERTH
doaj   +1 more source

Nontraditional hypsometric equation [PDF]

open access: yesQ. J. R. Meteorol. Soc., 146(727), 700-706 (2020), 2020
This study corrects the hypsometric equation by restoring the nontraditional terms to relax the hydrostatic approximation. The nontraditional terms include one Coriolis term and two metric terms in the vertical momentum equation. The hypsometric equations with and without the nontraditional correction are used to calculate the geopotential height of ...
arxiv   +1 more source

Long-distance chronometric leveling with a portable optical clock [PDF]

open access: yesPhys. Rev. Appl. 21, L061001 (2024), 2023
We have measured the geopotential difference between two locations separated by $457~\mathrm{km}$ by comparison of two optical lattice clocks via an interferometric fiber link, utilizing the gravitational redshift of the clock transition frequency. The $^{87}$Sr clocks have been compared side-by-side before and after one of the clocks was moved to the ...
arxiv   +1 more source

The Connections between the Establishment and Maintenance of Ural Blockings in Winter and Intra-seasonal Oscillation of Geopotential Height

open access: yesGaoyuan qixiang, 2023
The Ural blocking high (UB) in winter is an important influence system leading to widespread cold snap in China.Exploring exploring the connections between its establishment and maintenance processes and intra-seasonal oscillations of geopotential height
Binyu XU, Suxiang YAO, Qingfei SUN
doaj   +1 more source

Long term variations of atmospheric synoptic variability: A study based on radiosonde data from Lindenberg (Germany)

open access: yesMeteorologische Zeitschrift, 1995
In an extension of a study by Fraedrich et al. (1979a, b) we show how the atmospheric processes generating a local climate state can vary from year to year and between two decades in Eastern Germany - an area which is frequently visited by mature ...
Martin Göber, Andreas Hense
doaj   +2 more sources

Global Glacial Isostatic Adjustment Constrained by GPS Measurements: Spherical Harmonic Analyses of Uplifts and Geopotential Variations

open access: yesRemote Sensing, 2020
In addition to studies of sea level change and mantle rheology, reliable Glacial Isostatic Adjustment (GIA) models are necessary as a background model to correct the widely used Gravity Recovery and Climate Experiment (GRACE) monthly gravity solutions to
Yan Zhou   +5 more
doaj   +1 more source

Analysis of a Relative Offset between the North American and the Global Vertical Datum in Gravity Potential Space

open access: yesRemote Sensing, 2023
The accurate estimation of the zero-height geopotential level in a local vertical datum (LVD) is critical for linking traditional height reference systems to a global height system.
Dongmei Guo, Zhixin Xue
doaj   +1 more source

Can Machines Learn to Predict Weather? Using Deep Learning to Predict Gridded 500‐hPa Geopotential Height From Historical Weather Data

open access: yesJournal of Advances in Modeling Earth Systems, 2019
We develop elementary weather prediction models using deep convolutional neural networks (CNNs) trained on past weather data to forecast one or two fundamental meteorological fields on a Northern Hemisphere grid with no explicit knowledge about physical ...
Jonathan A. Weyn, D. Durran, R. Caruana
semanticscholar   +1 more source

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