Results 121 to 130 of about 68,989 (283)

Subseasonal forecasts of the MJO and convectively coupled equatorial waves in ACCESS‐S2 and GraphCast: A multi‐year analysis

Quarterly Journal of the Royal Meteorological Society, EarlyView.
ACCESS‐S2 performs better in predicting longer time‐scale and slower moving waves (MJO and equatorial Rossby waves), while GraphCast performs better in predicting shorter and faster moving waves (Kelvin and mixed Rossby–gravity waves). However, both models systematically underestimate precipitation amplitude across all wave types, especially over the ...
Beata Latos, Hanh Nguyen, Matthew C. Wheeler, Chen Li, Catherine de Burgh‐Day, Muhammad E. Hassim, Sandeep Sahany, Aurel Moise   +7 more
wiley   +1 more source

CFD Simulation of Air Cyclone Separator

Tikrit Journal of Engineering Sciences, 2017
A computational fluid dynamics model was developed for air cyclone separator in order to predict the flow pattern inside the cyclone using an Eulerian approach, three dimensions ReynoldsAverage Navier-Stokes equations, closed via the Reynolds Stress ...
Nuha wathq Nema, Saad Nahi Saleh, Fayadh Mohamed Abed   +2 more
doaj  

Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi, Thomas Gastaldo, Virginia Poli, Chiara Marsigli, Tijana Janjic, Alberto Carrassi   +5 more
wiley   +1 more source

RANS Equation-Based Gas Cyclone Separator CFD Simulation: an Appropriate Time Step Size

Chemical Engineering Transactions
The present work answers a question for Reynolds-Averaged Navier-Stokes (RANS) equation-based gas cyclone separator computational fluid dynamics (CFD) simulation: “How small is the appropriate time step size?”.
Piyawut Thongnoi, Walairat Chandra-Ambhorn, Benjapon Chalermsinsuwan, Santi Wattananusorn, Patthranit Wongpromrat, Eakarach Bumrungthaichaichan   +5 more
doaj  

Coupled diabatic and frictional forcing of single‐layer vortical flow

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A single‐layer balanced model is used to illustrate how diabatic and frictional forcing of a primary balanced vortical flow can be coupled self‐consistently, including the advection of potential vorticity by the induced transverse circulation. The coupling is illustrated in the context of a developing tropical cyclone, in which boundary‐layer dynamics ...
R. K. Scott
wiley   +1 more source

Synoptic and large‐scale drivers of extreme precipitation events in the Himalayas

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Months associated with maximum frequency of extreme precipitation events (EPEs). 6102 extreme precipitation days (i.e., exceeding 99th percentile for daily precipitation) occurred across the Karakoram, Western Himalayas (WH), Central Himalayas (CH) and Eastern Himalayas (EH) during 1979 to 2023.
Priya Bharati, Pranab Deb, Kieran M. R. Hunt   +2 more
wiley   +1 more source

Decadal‐scale drivers of South Pacific hydroclimate variability

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Using prescribed SST perturbations in the IGCM4 model, we investigate the mechanisms by which three major modes of low‐frequency climate variability—the IPO, AMV, and Southern Ocean SST‐driven midlatitude jet shifts—modulate the South Pacific hydroclimate.
Daniel T. Skinner, Connor Robbins, Gordon N. Inglis, Manoj Joshi, Peter Langdon, Adrian J. Matthews, Mark Peaple, Timothy J. Osborn, David A. Sear   +8 more
wiley   +1 more source

Structural Design and Optimization of SFS-GLCC Separator

Shiyou jixie, 2019
In view of the shortcomings of traditional cyclone separation equipment, such as large restrictive operation conditions, high sensitivity of working environment and poor discharge of outlet fluid, a Reynolds stress model is used to design a SFS-GLCC ...
Ni Lingying, Wu Xi, Tan Zhe
doaj  

Assessment of subseasonal forecast skill of tropical–extratropical cloud bands over the four subtropical convergence zones

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study evaluates the subseasonal predictive skill of tropical–extratropical cloud bands across four subtropical convergence zones in ECMWF reforecasts (2003–2022). Results show that, while exact daily predictions are limited to one week, accounting for temporal displacement improves forecast skill significantly, revealing a systematic early onset ...
Romain Pilon, Daniela I.V. Domeisen
wiley   +1 more source

Climate‐change‐amplified wind‐related economic losses during Cyclone Harry (2026)

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Cyclone Harry (January 2026) produced significant wind and rainfall impacts across southern Italy. Compared with 1950–1987, present conditions show warmer temperatures and stronger winds, increasing exposure. An estimated 72 million euros of damage are attributable to climate‐driven wind intensification. Abstract Cyclone Harry affected Sicily, Calabria,
Davide Faranda, Marco Zanchi, Tommaso Alberti   +2 more
wiley   +1 more source