Results 111 to 120 of about 1,005 (260)
Forecast‐Error Diagnostics in Neural Weather Models
Quarterly Journal of the Royal Meteorological Society, EarlyView.Deep learning weather prediction models enable efficient forecast‐error diagnostics through auto‐differentiation and low computational cost. We apply grid‐point relaxation and gradient‐based error sensitivity to identify key forecast‐error sources. Results show that medium‐range forecasts in the midlatitudes benefit most from relaxing the stratosphere ...
Uroš Perkan +2 more
wiley +1 more source
The relationship between equatorial wave interaction and heavy rainfall in Southeast Asia
Quarterly Journal of the Royal Meteorological Society, EarlyView.This study examines the statistical relationship between co‐occurring equatorial waves and heavy rainfall in Southeast Asia. Heavy rainfall is more closely related to combined wave activity than to individual waves in many regions of Southeast Asia. The figure shows GPM–IMERG rainfall (shading) and ERA5 850‐hPa winds (vectors) composited on days when ...
Samantha Ferrett +7 more
wiley +1 more source
RANS Equation-Based Gas Cyclone Separator CFD Simulation: an Appropriate Time Step Size
Chemical Engineering TransactionsThe 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 +5 more
doaj
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 +2 more
doaj
Quarterly Journal of the Royal Meteorological Society, EarlyView.Quasi‐stationary linear precipitation systems (QSLPSs) are a major cause of heavy rainfall in Japan, persisting over the same region for more than five hours. This study demonstrates that entraining convective available potential energy (E‐CAPE), which accounts for environmental air entrainment during parcel ascent, more accurately characterises the ...
Eigo Tochimoto +5 more
wiley +1 more source
Analysis of Dust Emission Characteristics of Peanut Whole-Feed Harvesting Based on Total Amount Collection Method. [PDF]
Int J Environ Res Public Health, 2022 Xu H, Zhang P, Hu Z, Mao E, You Z, Du Y.
europepmc +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.This study reveals that the combined effects of the North Atlantic Oscillation (NAO) and anomalous Indo‐Pacific Walker circulation on the excitation of the wave train along the wintertime subtropical jet strongly depend on their phase combination. Their impacts interfere constructively or destructively over South Asia, leading to notable differences in
Yuki Asazuma +2 more
wiley +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.ERA5 hourly 325‐m and 1512‐m (a) convergence and (b) vertical motion (actually pressure change with sign reversed to compare with convergence) over Sable Island around the time of an event. The mist (green) and fog (red) occurrences at the surface station are shown at the bottom of the figures. A 325‐m fitted line convergence was positive for the first
Clive E. Dorman +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