Results 51 to 60 of about 2,535 (244)

Meteorological conditions leading to a catastrophic, rain‐induced landslide in Cameroon in October 2019

Quarterly Journal of the Royal Meteorological Society, EarlyView.
October 2019 was characterized by three main multiday wet spells in Bafoussam and Dschang. Our results indicated that wet spells were influenced by a vortex pair near the Gulf of Guinea, a strong Sahara Heat Low located anomalously far east and north, a northward shift of the intertropical discontinuity, an enhancement of the inland penetration of the ...
Derbetini A. Vondou, Marlon Maranan, Andreas H. Fink, Peter Knippertz   +3 more
wiley   +1 more source

Cosmic Ray Counting Variability From Water‐Cherenkov Detectors as a Proxy of Stratospheric Conditions in Antarctica

Earth and Space Science
This work examines atmospheric effects on cosmic ray counts observed by a Water‐Cherenkov detector at the Argentine Antarctic Marambio Station. We analyze the influence of ground‐level barometric pressure and geopotential height at various pressure ...
N. A. Santos, N. Gómez, S. Dasso, A. M. Gulisano, L. Rubinstein, M. Pereira, O. Areso, for the LAGO Collaboration   +7 more
doaj   +1 more source

Evaluation of recent combined global geopotential models in Brazil

Journal of Geodetic Science, 2018
The aim of this paper is to present a quantitative analysis of the adequacy of the main currently existing combined Global Geopotential Models (GGMs) for modeling normal-geoid heights throughout Brazil.
Nicacio E., Dalazoana R., Freitas S. R. C. de   +2 more
doaj   +1 more source

Solar wind-driven geopotential height anomalies originate in the Antarctic lower troposphere [PDF]

Geophysical Research Letters, 2014
We use National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis data to estimate the altitude and time lag dependence of the correlation between the interplanetary magnetic field component, By, and the geopotential height anomaly above Antarctica.
Lam, Mai Mai, Chisham, Gareth, Freeman, Mervyn   +2 more
openaire   +2 more sources

Assessing wildfire dynamics during a megafire in Portugal using the MesoNH/ForeFire coupled model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Weather conditions affect megafires by inducing different fire behaviors over several days or weeks. The coupled MesoNH/ForeFire code was used to represent the dynamics of fire generating pyro‐convective clouds. To advance the understanding of wildfire dynamics, high‐resolution coupled fire–atmosphere modeling was employed.
Cátia Campos, Flavio Tiago Couto, Filippe L. M. Santos, Paulo Pinto, Carolina Purificação, Hugo Miguel Silva, João Rio, Manuel Lopes, Roberta Baggio, Jean‐Baptiste Filippi, Maria José Monteiro, Daniele Bortoli, Rui Salgado   +12 more
wiley   +1 more source

A Synoptic Analysis of Cyclonic Activity During 1961-2003 [PDF]

مخاطرات محیط طبیعی, 2012
Mid-latitude cyclones play an important role in precipitation over Iran. A survey on 6-hourly geopotential height of 1000 hPa level showed that the number of cyclones in the studied area reveals a positive trend.
Seyyed Abolfazl Masoodian
doaj   +1 more source

Seasonal hindcasts to assess the hazard of meteorological drought over Europe: A multimodel approach

Quarterly Journal of the Royal Meteorological Society, EarlyView.
An application of seasonal hindcasts is presented for assessing the hazard of meteorological drought at the regional scale across Europe. The realism of seasonal hindcasts from five contributors to the Copernicus Climate Change Service is assessed through a rigorous workflow.
Marco Buccellato, Paolo Ruggieri, Federico Porcù   +2 more
wiley   +1 more source

The Evaluation of Winds from Geopotential Height Data in the Stratosphere [PDF]

Journal of the Atmospheric Sciences, 1987
Abstract Several methods of obtaining horizontal wind fields in the extratropical stratosphere from geopotential height data are evaluated and compared to geostrophic estimates, with focus on the poleward fluxes of momentum and heat and on the resulting Eliassen–Palm (EP) flux divergence estimates. Winds derived from a coupled iterative solution of the
William J. Randel
openalex   +2 more sources

The Arctic Oscillation Signature in the Wintertime Geopotential Height and Temperature Fields [PDF]

Geophysical Research Letters, 1998
The leading empirical orthogonal function of the wintertime sea‐level pressure field is more strongly coupled to surface air temperature fluctuations over the Eurasian continent than the North Atlantic Oscillation (NAO). It resembles the NAO in many respects; but its primary center of action covers more of the Arctic, giving it a more zonally symmetric
Thompson, David W. J., Wallace, John M.
openaire   +2 more sources

Estimation and Investigation of Geopotential and Scale heights over Iseyin, Nigeria [PDF]

International Journal of Current Science Research and Review, 2021
In this study, the monthly averaged daily mean temperature, relative humidity and surface pressure data obtained from the European Centre for Medium-Range Weather Forecasts (ECMWF) during the period of thirty eight (1979 – 2016) years were used to estimate the monthly variation of geopotential and scale heights for Iseyin located in the South Western ...
openaire   +1 more source