Results 101 to 110 of about 30,389 (290)

Performance evaluation of regional weather predictions with the Model for Prediction Across Scales – Atmosphere (MPAS‐A) over the Maritime Continent

Quarterly Journal of the Royal Meteorological Society, EarlyView.
As part of the ongoing efforts to develop next‐generation forecasting systems at the Meteorological Service Singapore, this study presents the setup and evaluation of the SINGV_NG(MPAS) system. Overall, the SINGV_NG(MPAS) system outperforms European Centre for Medium‐Range Weather Forecasts (ECMWF) deterministic forecasts in capturing heavy rainfall ...
I‐Han Chen, Pratiman Patel, Kalli Furtado, Wei Wang, Zhiquan Liu, Dale Barker, Jimy Dudhia, Hugh Zhang   +7 more
wiley   +1 more source

Modeling intraseasonal features of 2004 North American monsoon precipitation [PDF]

, 2007
This study examines the capabilities and limitations of the fifth-generation Pennsylvania State University-National Center for Atmospheric Research Mesoscale Model (MM5) in predicting the precipitation and circulation features that accompanied the 2004 ...
Gao, X, Li, J, Sorooshian, S
core   +1 more source

Assessing high‐resolution numerical models and bottom‐boundary factors for a Mediterranean heavy precipitation event

Quarterly Journal of the Royal Meteorological Society, EarlyView.
State‐of‐the‐art, convection‐permitting NWP models reproduced the main features of the October 22–23, 2019 heavy precipitation event in Catalonia. However, slight configuration changes yielded varying streamflow responses and statistical performance, highlighting the challenge of simulating these events in Mediterranean medium‐sized basins ...
D. Ramonell, D. S. Carrió, A. Amengual, R. Romero   +3 more
wiley   +1 more source

The characteristics of squall lines in the Southeast Asia region

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Squall lines over the Maritime Continent were analysed using 20 years of IMERG GPM data and classified into four regional clusters. Significant regional differences were found in their size, intensity, lifespan, and propagation. Nighttime squall lines are primarily driven by the convergence of opposing offshore flows and the convergence of monsoonal ...
Jeong‐Yik Diong, Prince Xavier, Muhammad Firdaus Ammar Abdullah, Juliane Schwendike   +3 more
wiley   +1 more source

Impact of Parameterization of Physical Processes on Simulation of Track and Intensity of Tropical Cyclone Nargis (2008) with WRF-NMM Model

The Scientific World Journal, 2012
The present study is carried out to investigate the performance of different cumulus convection, planetary boundary layer, land surface processes, and microphysics parameterization schemes in the simulation of a very severe cyclonic storm (VSCS) Nargis ...
Sujata Pattanayak, U. C. Mohanty, Krishna K. Osuri   +2 more
doaj   +1 more source

Predictability associated with convection-allowing and convection-parameterizing forecasts

, 2018
Exponential increases in computing power during the last 30 years have allowed operational numerical weather (NWP) models to steadily refine their grid-spacing to better represent topographic features and related physical processes. The reductions in model grid-spacing have contributed to significant improvements in forecasts of many important ...
openaire   +3 more sources

The non‐hydrostatic option of the ECMWF global weather forecast model: Improvements for kilometre‐scale modelling

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study presents improvements to the non‐hydrostatic version of the European Centre for Medium‐Range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS), enabling stable global simulations at 1.4‐km resolution. A systematic comparison with the hydrostatic version at resolutions from 9 to 1.4 km shows that non‐hydrostatic effects emerge in ...
Jozef Vivoda, Inna Polichtchouk, Michail Diamantakis, Filip Váňa   +3 more
wiley   +1 more source

Coastal Tropical Convection in a Stochastic Modeling Framework

, 2017
Recent research has suggested that the overall dependence of convection near coasts on large-scale atmospheric conditions is weaker than over the open ocean or inland areas. This is due to the fact that in coastal regions convection is often supported by
Ajayamohan, Arakawa, Arakawa, Arritt, Bergemann, Bergemann, Birch, Borne, Boualem Khouider, Bretherton, Christian Jakob, Davies, Deng, Deng, Geotis, Gianotti, Goswami, Gregory, Haklander, Haurwitz, Hill, Hohenegger, Holland, Hottovy, Ichikawa, Jiang, Johnson, Joyce, Keenan, Khouider, Khouider, Kondo, Kousky, La Chevrotière, La Chevrotière, Mapes, Mapes, Martin Bergemann, Matsumoto, McPherson, Mori, Neale, Nguyen, Ohsawa, Oliphant, Peatman, Peters, Peters, Pollett, Pope, Qian, Qian, Randall, Rauniyar, Rotunno, Saltelli, Saltelli, Simpson, Simpson, Skinner, Slingo, Sobol, Suhas, Tan, Tiedtke, Tiedtke, Williams, Wolfram, Yang, Zhuo   +69 more
core   +1 more source

Cumulonimbus convection and parameterization

, 1980
Imperial Users ...
Tam, Hok Yau, Tam, Hok Yau
openaire   +1 more source

Simulating the year to minute wind spectrum with mesoscale‐coupled large‐eddy simulations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We coupled a large‐eddy simulation (resolution 50 m) to a mesoscale model (resolution 2 km), which takes boundary conditions from the ERA5 reanalysis. When using a large enough mesoscale domain (𝒪(1000 km)), the simulation setup can reproduce the observed temporal wind spectrum reasonably at all scales between one year and one minute. Furthermore, such
Bernard Postema, Chiel C. van Heerwaarden, Bart J.H. van Stratum, Pim van Dorp, Peter Baas, Harm J.J. Jonker   +5 more
wiley   +1 more source