Results 61 to 70 of about 41,183 (323)

Propagation mechanisms for the Madden-Julian Oscillation [PDF]

, 2000
The Madden-Julian Oscillation (MJO) is examined using 20 years of outgoing longwave radiation and NCEP-NCAR reanalysis data. Two mechanisms for the eastward propagation and regeneration of the convective anomalies are suggested.
Matthews, AJ
core   +1 more source

Local identification of equatorial mixed Rossby–gravity waves

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A method for the local identification of mixed Rossby–gravity (MRG) waves at specific longitudes is proposed. The technique jointly identifies eastward mixed Rossby–gravity (EMRG) and westward mixed Rossby–gravity (WMRG) waves. Comparison with global identification methods already found in the literature shows very good accuracy of the newly developed ...
João B. Cruz, Carlos C. DaCamara, José M. Castanheira   +2 more
wiley   +1 more source

Comparison of ECMWF analyses with GPS radio occultations from CHAMP [PDF]

Annales Geophysicae, 2008
A climatological validation of the 6-hourly operational ECMWF troposphere and lower stratosphere temperatures as well as geopotential heights between 1000 and 10 hPa is performed using the 2001–2007 (80 months from May 2001 to December 2007) CHAMP ...
T. Schmidt, J. Wickert, S. Heise, F. Flechtner, E. Fagiolini, G. Schwarz, L. Zenner, T. Gruber   +7 more
doaj   +1 more source

Air–sea feedback in the northeastern tropical Atlantic in boreal summer at intraseasonal time‐scales

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study investigates air–sea interactions in the northeastern tropical Atlantic at intraseasonal time‐scales, focusing on the feedback between sea‐surface temperature (SST) and surface winds. It finds that trade wind anomalies drive SST changes, creating a feedback loop that lasts 2–3 weeks.
Mamadou Thiam, Gaelle de Coetlogon, Malick Wade, Mamadou Sarr, Bouya Diop   +4 more
wiley   +1 more source

On the connection of the Ecuadorian Vertical Datum to the IHRS

Journal of Geodetic Science, 2023
In this work, the determination of the discrepancy between the Ecuadorian Vertical Datum (EVD) and the International Height Reference System (IHRS) is presented.
Carrión José L., de Freitas Sílvio R. Correia, Barzaghi Riccardo   +2 more
doaj   +1 more source

Intercomparison of the northern hemisphere winter mid-latitude atmospheric variability of the IPCC models

, 2006
We compare, for the overlapping time frame 1962-2000, the estimate of the northern hemisphere (NH) mid-latitude winter atmospheric variability within the XX century simulations of 17 global climate models (GCMs) included in the IPCC-4AR with the NCEP and
A Buzzi, A Speranza, A Sumi, AK Betts, Alessandro Dell’Aquila, Antonio Speranza, AR Hansen, AR Hansen, D Gregory, D-M Pan, E Klinker, EM Volodin, G Branstator, G Branstator, GA Schmidt, GJ Van Oldenburg, GJ Zhang, H Le Treut, J Jungclaus, J-L Ricard, J-Y Grandpeix, JG Charney, JG Charney, JJ Hack, JM Wallace, JM Wallace, JP Peixoto, JR Holton, JT Kiehl, K Fraedrich, LD Rotstayn, LD Rotstayn, M Tiedke, ML Blackmon, P Bougeault, P Malguzzi, P Siegmund, Paolo M. Ruti, PJ Rasch, R Benzi, R Benzi, R Kistler, S Bony, S Moorthi, S Tibaldi, S-J Kim, S-K Min, Sandro Calmanti, T Furevik, TL Delworth, U Lohmann, V Lucarini, Valerio Lucarini, W May, Y Hayashi, Y Hayashi, Y Kushnir, Y Yu   +57 more
core   +1 more source

Links between hail hazard and climate modes of variability across Australia

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Climate modes of variability influence hail‐prone atmospheric conditions, but links between these drivers and hail hazard across Australia have not been well constrained. We examine relationships between the El Niño Southern Oscillation (ENSO), Indian Ocean Dipole (IOD), and Southern Annular Mode (SAM) and proxy‐derived hail‐prone days across the ...
Quincy F. Tut, Timothy H. Raupach, Andréa S. Taschetto   +2 more
wiley   +1 more source

Formulation of geopotential difference determination using optical-atomic clocks onboard satellites and on ground based on Doppler cancellation system

, 2016
In this study, we propose an approach for determining the geopotential difference using high-frequency-stability microwave links between satellite and ground station based on Doppler cancellation system.
Ziyu Shen, W. Shen, Shuangxi Zhang
semanticscholar   +1 more source

Sensitivities of warm conveyor belt ascent, associated precipitation characteristics and large‐scale flow pattern: Insights from a perturbed parameter ensemble

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Cloud microphysical processes and low‐level moisture availability affect the ascent of the warm conveyor belt (WCB) airstream. We quantify the relative influence of perturbations to uncertain cloud microphysical model parameters and environmental conditions in the lower troposphere on WCB ascent, as well as on associated precipitation characteristics ...
Annika Oertel, Annette K. Miltenberger, Christian M. Grams, Corinna Hoose   +3 more
wiley   +1 more source

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

, 2003
In this paper we use, in a preliminary way, the recently released EIGEN2 Earth gravity model, which is based on six months of data of CHAMP only, in order to reassess the systematic error due to the mismodelling in the even zonal harmonics of ...
Iorio, Lorenzo, Morea, Alberto
core   +1 more source