Results 11 to 20 of about 24,612 (296)

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

Rising geopotential height under global warming

open access: yesClimate Dynamics, 2023
Abstract Geopotential height (H) is a widely used metric for atmospheric circulation. H has been reported to be rising under global warming, but the amplitude and mechanism of this rise are not clear. Based on reanalysis datasets and climate models participating in CMIP6, this study quantitatively evaluates the sensitivity of H to global mean ...
Chao He   +8 more
openaire   +2 more sources

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

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

The atmospheric quasi-biweekly oscillation during the Jiangnan Meiyu onset period

open access: yesFrontiers in Earth Science, 2022
Meiyu is a typical rainy season during the East Asian Summer Monsoon whose early or late onset is closely related to an abnormal amount of rainfall. Based on the ERA-interim daily reanalysis data from 1979 to 2019 and the Meiyu index dataset provided by ...
Tianle Sun, Suxiang Yao, Qian Huang
doaj   +1 more source

A Southern Hemispheric influence on the North Atlantic through a shallow atmospheric circulation response [PDF]

open access: yes, 2017
Previous research has discussed the importance of meridional migrations of the North Atlantic Subtropical High (NASH) on U.S. precipitation patterns, but the mechanisms that control these meridionial migrations are virtually unknown.
Bowerman, Adam R.
core   +1 more source

Study of Some Patterns for Severe Rainfalls Over Iraq

open access: yesAl-Mustansiriyah Journal of Science, 2020
Study of rain received particularly great importance in the areas described as semi-arid, which is on the other hand are not well prepared for the drainage of rain that may turned into flash floods.
Yaser Ali Shaghati
doaj   +1 more source

Probabilistic Forecasting of the 500 hPa Geopotential Height over the Northern Hemisphere Using TIGGE Multi-model Ensemble Forecasts

open access: yesAtmosphere, 2021
Bayesian model averaging (BMA) and ensemble model output statistics (EMOS) were used to improve the prediction skill of the 500 hPa geopotential height field over the northern hemisphere with lead times of 1–7 days based on ensemble forecasts from the ...
Luying Ji   +3 more
doaj   +1 more source

Evaluation of the geopotential value W0LVD of China

open access: yesGeodesy and Geodynamics, 2017
Estimation of the zero-height geopotential value W0LVD for the CVD (China Vertical Datum) plays a fundamental role in the connection of traditional height reference systems into a global height system.
Lin He, Yonghai Chu, Nan Yu
doaj   +1 more source

Influence of the recent winter Arctic sea ice loss in short-term simulations of a regional atmospheric model

open access: yesScientific Reports, 2022
Notable changes in the wintertime Arctic atmospheric circulation have occurred over the last few decades. Despite its importance in understanding the recent changes in the Northern Hemisphere midlatitude climate, it remains unclear whether and how these ...
Heeje Cho, Jong-Seong Kug, Sang-Yoon Jun
doaj   +1 more source

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