Results 31 to 40 of about 418,125 (221)

A high-order conservative collocation scheme and its application to global shallow-water equations [PDF]

open access: yesGeoscientific Model Development, 2015
In this paper, an efficient and conservative collocation method is proposed and used to develop a global shallow-water model. Being a nodal type high-order scheme, the present method solves the pointwise values of dependent variables as the unknowns ...
C. Chen, X. Li, X. Shen, F. Xiao
doaj   +1 more source

A Short-Term Wind Speed Forecasting Model Based on a Multi-Variable Long Short-Term Memory Network

open access: yesAtmosphere, 2021
Accurately forecasting wind speed on a short-term scale has become essential in the field of wind power energy. In this paper, a multi-variable long short-term memory network model (MV-LSTM) based on Pearson correlation coefficient feature selection is ...
Anqi Xie   +4 more
doaj   +1 more source

Comparative Assessment of Various Machine Learning‐Based Bias Correction Methods for Numerical Weather Prediction Model Forecasts of Extreme Air Temperatures in Urban Areas

open access: yesEarth and Space Science, 2020
Forecasts of maximum and minimum air temperatures are essential to mitigate the damage of extreme weather events such as heat waves and tropical nights.
Dongjin Cho, C. Yoo, J. Im, D. Cha
semanticscholar   +1 more source

The Evaluation of Return Radiosonde Temperature using GNSS Radio Occultation Retrievaled Temperature

open access: yesGaoyuan qixiang, 2023
It is necessary to evaluate the quality of a new type of observation data before using it for data assimilation.Based on GNSS radio occultation (RO) and ERA-Interim reanalysis data, the quality of temperature in the ascent, drift and descent stage of ...
Na RONG   +3 more
doaj   +1 more source

Estimating 1min rain rate distributions from numerical weather prediction [PDF]

open access: yes, 2017
Internationally recognized prognostic models of rain fade on terrestrial and Earth-space EHF links rely fundamentally on distributions of one-minute rain rates. Currently, in Rec. ITU-R P.837-6, these distributions are generated using the Salonen Poiares-
Paulson, Kevin S.
core   +1 more source

Modernization of Atmospheric Physics Parameterization in Canadian NWP

open access: yesJournal of Advances in Modeling Earth Systems, 2019
Atmospheric physics is represented in numerical models by parameterizations that use resolved‐scale information to estimate the effects of physical processes on the atmospheric state.
R. McTaggart‐Cowan   +11 more
doaj   +1 more source

Influence of the upper gravity-wave damping layer on precipitation over complex terrain

open access: yesFrontiers in Environmental Science, 2022
The upper boundary condition of a numerical model can significantly influence the model prediction results. This study used the Weather Research and Forecasting model to introduce the Rayleigh damping layer in the complex terrain of southern Gansu, China.
H. X. Duan   +12 more
doaj   +1 more source

Improving High-Impact Numerical Weather Prediction with Lidar and Drone Observations

open access: yesBulletin of The American Meteorological Society - (BAMS), 2020
The current atmospheric observing systems fail to provide a satisfactory amount of spatially and temporally resolved observations of temperature and humidity in the planetary boundary layer (PBL) despite their potential positive impact on numerical ...
D. Leuenberger   +7 more
semanticscholar   +1 more source

A weather forecast model accuracy analysis and ECMWF enhancement proposal by neural network [PDF]

open access: yes, 2019
This paper presents a neural network approach for weather forecast improvement. Predicted parameters, such as air temperature or precipitation, play a crucial role not only in the transportation sector but they also influence people's everyday activities.
Durica, Marek   +5 more
core   +1 more source

Insights into characteristics and formation mechanisms of secondary organic aerosols in the Guangzhou urban area [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
Emission controls have substantially brought down aerosol pollution in China; however, aerosol mass reductions have slowed down in recent years in the Pearl River Delta (PRD) region, where secondary organic aerosol (SOA) formation poses a major challenge
M. Zhai   +19 more
doaj   +1 more source

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