Results 11 to 20 of about 1,187,144 (257)

Evaluation of Geopotential Height at 500 hpa with Rainfall Events: A Case Study of Iraq

open access: yesAl-Mustansiriyah Journal of Science, 2022
The geopotential height at 500 hPa is a key factor in determining the weather and climate conditions around the world. This paper aims to study the effect of 500hpa geopotential height in Iraq weather from a synoptic perspective and evaluation the ...
Mohammed Abdul Raheem Jabbar   +1 more
doaj   +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

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

Variability and trends in surface solar spectral ultraviolet irradiance in Italy: on the influence of geopotential height and lower-stratospheric ozone

open access: yesAtmospheric Chemistry and Physics, 2021
. The short- and long-term variability of the surface spectral solar ultraviolet (UV) irradiance is investigated across Italy using high-quality ground-based measurements from three locations: Aosta (45.7∘ N, 7.4∘ E, 570 m a.s.l.), Rome (41.9∘ N, 12.5∘ E,
I. Fountoulakis   +5 more
semanticscholar   +1 more source

Test of Determining Geopotential Difference between Two Sites at Wuhan Based on Optical Clocks’ Frequency Comparisons

open access: yesRemote 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

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

Forecast Assessment of CMA-GFS on the Meteorological Elements in the Northeast Hemisphere

open access: yesGaoyuan qixiang, 2023
Based on the daily forecast data initialized at 20:00 (Beijing time) of the CMA global forecast system (CMA-GFS) during the period from October, 2019 to December, 2020, the forecasting quality of the upper air meteorological elements in the Northeast ...
Chunjuan QI, Liujie PAN
doaj   +1 more source

A Cut-off low at 500 hPa Geopotential Height and Rainfall Events over Iraq: Case Studies

open access: yesIraqi Journal of Physics, 2022
A cut-off low is a closed low with a low value of geopotential height at the upper atmospheric levels that has been fully detached (cut-off) from the westerly flow and move independently. A cut-off low causes extreme rainfall events in the mid-latitudes
Mohammed Abdul Raheem Jabbar   +1 more
doaj   +1 more source

Eigen microstates and their evolution of global ozone at different geopotential heights [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2021
Studies on stratospheric ozone have attracted much attention due to its serious impacts on climate changes and its important role as a tracer of Earth’s global circulation. Tropospheric ozone as a main atmospheric pollutant damages human health as well as the growth of vegetation.
Xiaojie Chen   +6 more
openaire   +3 more sources

Measuring Height Difference Using Two-Way Satellite Time and Frequency Transfer

open access: yesRemote 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

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