Results 31 to 40 of about 28,967 (253)

An Objective Analysis Technique for Constructing Three-Dimensional Urban-Scale Wind Fields [PDF]

open access: yes, 1980
An objective analysis procedure for generating mass-consistent, urban-scale three-dimensional wind fields is presented together with a comparison against existing techniques.
Goodin, William R.   +2 more
core   +1 more source

Statistical Analysis of Mesovortices during the First Rainy Season in Guangdong, South China

open access: yesRemote Sensing, 2023
Based on Doppler radar observation and reanalysis data, the statistical characteristics of mesovortices (MVs) during the first rainy season (April–June) in Guangdong, South China, from 2017 to 2019 are studied, including their spatiotemporal ...
Ying Tang   +6 more
doaj   +1 more source

A Hybrid Four‐Dimensional Variational Data Assimilation System for the Model for Prediction Across Scales (MPAS‐Atmosphere): Leveraging the Joint Effort for Data Assimilation Integration (JEDI)

open access: yesJournal of Advances in Modeling Earth Systems
A global Four‐Dimensional Ensemble Variational (4DEnVar) data assimilation system for the Atmospheric component of the Model for Prediction Across Scales (MPAS‐A) is presented that uses the Joint Effort for Data assimilation Integration (JEDI).
R. G. Nystrom   +5 more
doaj   +1 more source

Dampening of the Precipitation Response to Aerosol Pollution From Turbulence in Cumulus Clouds

open access: yesGeophysical Research Letters
Using aircraft observations and a cloud model with particle‐based microphysics, it is shown that the enhancement of drop collision‐coalescence from turbulence in clouds not only leads to earlier onset of rain in warm cumulus clouds as past studies have ...
Kamal Kant Chandrakar, Hugh Morrison
doaj   +1 more source

How Are Tornadic Supercell Soundings Significantly Different From Nearby Baseline Environments?

open access: yesGeophysical Research Letters, 2023
This study explores how tornadic supercell soundings significantly differ from the same‐location and same‐hour baseline environment soundings, sampled from the days prior to or following the event. Permutation testing is used to identify whether sounding‐
Zhanxiang Hua, Alexandra Anderson‐Frey
doaj   +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

Combination of mesoscale and synoptic mechanisms for triggering an isolated thunderstorm: Observational case study of CSIP IOP 1 [PDF]

open access: yes, 2007
Copyright @ 2007 AMSAn isolated thunderstorm formed in the southern United Kingdom on 15 June 2005 and moved through the area where a large number of observational instruments were deployed as part of the Convective Storm Initiation Project.
Alan Blyth   +35 more
core   +1 more source

Impact of Indo-Pacific warm pool Hadley circulation on the seasonal forecast performance for summer precipitation over the western North Pacific

open access: yesEnvironmental Research Letters, 2020
The western North Pacific summer climate affects the densely populated East Asian countries, while seasonal forecasting over these regions remains challenging for dynamical models.
Yi-Peng Guo   +3 more
doaj   +1 more source

Rainfall intensity estimation at night using deep learning and urban surveillance cameras in Jiangsu Province, China

open access: yesJournal of Hydrology: Regional Studies
Study region: This study was conducted in the Yangtze River Delta of eastern China, focusing on the highly urbanized corridor of Nanjing, Yangzhou, and Wuxi (Jiangsu Province), where the nighttime surveillance videos were collected during 2022–2025 ...
Xing Wang   +3 more
doaj   +1 more source

Microphysical Characteristics of Three Convective Events with Intense Rainfall Observed by Polarimetric Radar and Disdrometer in Eastern China

open access: yesRemote Sensing, 2019
Polarimetric radar and disdrometer observations obtained during the 2014 Observation, Prediction, and Analysis of Severe Convection of China (OPACC) field campaign are used in this study to investigate the microphysical characteristics of three primary ...
Gang Chen   +9 more
doaj   +1 more source

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