Results 51 to 60 of about 50,845 (215)

Fast Fourier Transform Ensemble Kalman Filter with Application to a Coupled Atmosphere-Wildland Fire Model

open access: yes, 2010
We propose a new type of the Ensemble Kalman Filter (EnKF), which uses the Fast Fourier Transform (FFT) for covariance estimation from a very small ensemble with automatic tapering, and for a fast computation of the analysis ensemble by convolution ...
Beezley, Jonathan D.   +2 more
core   +1 more source

WRF-Model Data Assimilation Studies of Landfalling Atmospheric Rivers and Orographic Precipitation Over Northern California [PDF]

open access: yes, 2014
In this study, data assimilation methods of 3-D variational analysis (3DVAR), observation nudging, and analysis (grid) nudging were evaluated in the Weather Research and Forecasting (WRF) model for a high-impact, multi-episode landfalling atmospheric ...
Eiserloh, Arthur John
core   +1 more source

Numerical simulations of the impacts of mountain on oasis effects in arid Central Asia [PDF]

open access: yes, 2017
The oases in the mountain-basin systems of Central Asia are extremely fragile. Investigating oasis effects and oasis-desert interactions is important for understanding the ecological stability of oases.
De Maeyer, Philippe   +6 more
core   +3 more sources

Wind Resource Evaluation With Atmospheric Stability Across Different Surface Types

open access: yesEnergy Science &Engineering, EarlyView.
Wind resource evaluation with atmospheric stability across different surface types. ABSTRACT This study investigates the influence of atmospheric stability on wind resource assessment across various surface conditions, focusing on wind shear and prevailing wind direction as key analytical parameters.
Zejia Hua, Wei Tao, Guanjun Wang
wiley   +1 more source

The 2018 Camp Fire: Meteorological Analysis Using In Situ Observations and Numerical Simulations

open access: yesAtmosphere, 2019
The November 2018 Camp Fire quickly became the deadliest and most destructive wildfire in California history. In this case study, we investigate the contribution of meteorological conditions and, in particular, a downslope windstorm that occurred during ...
Matthew J. Brewer, Craig B. Clements
doaj   +1 more source

Revisiting 2013 Uttarakhand flash floods through hydrological evaluation of precipitation data sources and morphometric prioritization

open access: yesGeomatics, Natural Hazards & Risk, 2022
With advancements in computational technology, data assimilation techniques, high-resolution remote sensing, and complex climate models, numerous precipitation products are available with different spatiotemporal resolutions; however, their evaluation ...
Pratiman Patel   +7 more
doaj   +1 more source

Comparative Analysis of Convection Permitting Model and Cumulus Parameterization for Simulation of Summer Precipitation over Qinghai-Xizang (Tibetan) Plateau

open access: yesGaoyuan qixiang, 2023
The Qinghai-Xizang (Tibetan) Plateau is known as the Asian water tower.The change of its water resources has an important impact on the weather and climate in the lower reaches.Precipitation is a key role in the water cycle.Therefore, it is of great ...
Ying CHEN   +4 more
doaj   +1 more source

Performance Evaluation of the MPAS Model in Simulating Southeast Asian Rainfall Characteristics

open access: yesInternational Journal of Climatology, EarlyView.
This study evaluates the performance of the Model for Prediction Across Scales–Atmosphere (MPAS) in reproducing key rainfall characteristics over Southeast Asia (SEA) during 2000–2020, using the MSWEP dataset as reference. MPAS realistically captures the observed meridional rainfall gradient, with higher rainfall in the south and lower in the north, as
Nguyen Thanh Hung   +4 more
wiley   +1 more source

Precipitation Forecast Contribution Assessment in the Coupled Meteo-Hydrological Models

open access: yesAtmosphere, 2019
A numerical weather prediction and a rainfall-runoff model employed to evaluate precipitation and flood forecast for the Imjin River (South and North Korea).
Aida Jabbari, Jae-Min So, Deg-Hyo Bae
doaj   +1 more source

Comparison and Numeric Simulation of Two Sea Fog Processes behind High Pattern over Qiongzhou Strait

open access: yesGaoyuan qixiang, 2022
Using mesoscale numerical forecasting model WRF and National Centers for Environmental Prediction (NCEP) reanalysis data, two persistent sea fog events on 17-20 February 2018 and 4-6 February 2019 over Qiongzhou strait were simulated.Combined with ...
Wei YANG   +4 more
doaj   +1 more source

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