Results 41 to 50 of about 41,183 (323)

An intercomparison of subtropical cut-off lows in the Southern Hemisphere using recent reanalyses: ERA-Interim, NCEP-CFRS, MERRA-2, JRA-55, and JRA-25 [PDF]

open access: yes, 2020
Four recent reanalysis products ERA-Interim, NCEP-CFSR, MERRA-2 and JRA-55 are evaluated and compared to an older reanalysis JRA-25, to quantify their confidence in representing Cut-off lows (COLs) in the Southern Hemisphere.
Gan, Manoel Alonso   +2 more
core   +1 more source

True Geopotential in Meteorology

open access: yes, 2021
Geopotential in meteorology is the same as gravity potential in geodesy but with the opposite sign.
openaire   +2 more sources

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

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

Using eddy geopotential height to measure the western North Pacific subtropical high in a warming climate

open access: yesTheoretical and Applied Climatology, 2016
The western North Pacific subtropical high (WNPSH) is crucial to the East Asian summer climate, and geopotential height (H) is widely used to measure the WPNSH.
Chao He   +6 more
semanticscholar   +1 more source

Compressive Earth Observatory: An Insight from AIRS/AMSU Retrievals [PDF]

open access: yes, 2014
We demonstrate that the global fields of temperature, humidity and geopotential heights admit a nearly sparse representation in the wavelet domain, offering a viable path forward to explore new paradigms of sparsity-promoting data assimilation and ...
Ardeshir M. Ebtehaj   +39 more
core   +1 more source

Geopotential Determination Based on Precise Point Positioning Time Comparison: A Case Study Using Simulated Observation

open access: yesIEEE Access, 2020
Based on the general relativity theory, the geopotential difference can be determined by comparing the change in time difference between precise clocks using the precise point positioning (PPP) time transfer technique, referred to as the relativistic PPP
Chenghui Cai   +3 more
doaj   +1 more source

The new Earth gravity models and the measurement of the Lense-Thirring effect

open access: yes, 2004
We examine how the new forthcoming Earth gravity models from the CHAMP and, especially, GRACE missions could improve the measurement of the general relativistic Lense-Thirring effect according to the various kinds of observables which could be adopted ...
Iorio, Lorenzo
core   +5 more sources

Characterizing quasi-biweekly variability of the Asian monsoon anticyclone using potential vorticity and large-scale geopotential height field [PDF]

open access: yesAtmospheric Chemistry and Physics, 2020
The spatial pattern of subseasonal variability of the Asian monsoon anticyclone is analyzed using long-term reanalysis data, focusing on the large-scale longitudinal movement.
A. Amemiya, K. Sato
doaj   +1 more source

Polar mesoscale cyclones in the northeast Atlantic: Comparing climatologies from ERA-40 and satellite imagery [PDF]

open access: yes, 2006
Polar mesoscale cyclones over the subarctic are thought to be an important component of the coupled atmosphere–ocean climate system. However, the relatively small scale of these features presents some concern as to their representation in the ...
Alan Condron   +31 more
core   +1 more source

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