Results 21 to 30 of about 54,911 (216)

Modernization of Atmospheric Physics Parameterization in Canadian NWP

Journal 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, P. A. Vaillancourt, A. Zadra, S. Chamberland, M. Charron, S. Corvec, J. A. Milbrandt, D. Paquin‐Ricard, A. Patoine, M. Roch, L. Separovic, J. Yang   +11 more
doaj   +1 more source

Improving volcanic ash predictions with the HYSPLIT dispersion model by assimilating MODIS satellite retrievals [PDF]

Atmospheric Chemistry and Physics, 2017
Currently, the National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) runs the HYSPLIT dispersion model with a unit mass release rate to predict the transport and dispersion of volcanic ash.
T. Chai, A. Crawford, B. Stunder, M. J. Pavolonis, R. Draxler, A. Stein   +5 more
doaj   +1 more source

Input/Output analysis and optimization for GRAPES regional model

Dianzi Jishu Yingyong, 2022
The new generation Global/Regional Assimilation and PreEdiction System(GRAPES) is a homegrown numerical weather prediction software developed by China Meteorological Administration(CMA).
Yang Bin, Wang Jingyu, Liu Weiguo, Cai Huiyi, Yu Fei, Deng Liantang, Huang Liping   +6 more
doaj   +1 more source

Air Quality Monitoring and Forecasting

Atmosphere, 2018
Air quality forecasting is a vital tool for local health and air managers to make informed decisions on mitigation measures to reduce public exposure risk.[...]
Pius Lee, Rick Saylor, Jeff McQueen
doaj   +1 more source

Characteristics of 1 year of observational data of VOCs, NO_x and O₃ at a suburban site in Guangzhou, China [PDF]

Atmospheric Chemistry and Physics, 2015
Guangzhou, one of China's megacities, is beset with frequent occurrence of high-concentration ozone events. In this study, online instruments were used to simultaneously monitor ozone, nitrogen oxides (NOx) and volatile organic compounds (VOCs) at GPACS (
Y. Zou, X. J. Deng, D. Zhu, D. C. Gong, H. Wang, F. Li, H. B. Tan, T. Deng, B. R. Mai, X. T. Liu, B. G. Wang   +10 more
doaj   +1 more source

Comparison of Atmospheric Turbulence Characteristics over Sea Surface and Land Surface before, during, and after Typhoons

Atmosphere, 2022
The goal of the paper is to reveal discrepancies of turbulent variables over different surfaces (sea, island, land) based on the measurements taken on three towers during (including before and after) seven typhoon episodes from 2008 to 2018.
Xueyan Bi, Chao Lu, Chunxia Liu, Jian Huang, Honglong Yang, Zhongkuo Zhao, Qingtao Song   +6 more
doaj   +1 more source

A Summary of National Oceanic and Atmospheric Administration Space Weather Prediction Center Proton Event Forecast Performance and Skill

Space Weather, 2021
The effects of solar radiation storms at Earth are felt across a number of technology‐based industries. Energetic particles present during these storms impact electrical components on spacecraft, disrupt high frequency radio communications, and pose a ...
H. M. Bain, R. A. Steenburgh, T. G. Onsager, E. M. Stitely   +3 more
doaj   +1 more source

Prediction Challenges From Errors in Tropical Pacific Sea Surface Temperature Trends

Frontiers in Climate, 2022
Models in the North American Multi-Model Ensemble (NMME) predict sea surface temperature (SST) trends in the central and eastern equatorial Pacific Ocean which are more positive than those observed over the period 1982–2020.
Michelle L. L'Heureux, Michael K. Tippett, Wanqiu Wang   +2 more
doaj   +1 more source

Observations of boundary layer wind and turbulence of a landfalling tropical cyclone

Scientific Reports, 2022
This study investigates the atmospheric boundary layer structure based on multiple-level tower observations with a height of 350 m during the landfall of Super Typhoon Mangkhut (2018).
Zhongkuo Zhao, Ruiquan Gao, Jun A. Zhang, Yong Zhu, Chunxia Liu, P. W. Chan, Qilin Wan   +6 more
doaj   +1 more source

Why are severe weather and anomalous climate events often associated with the orthogonal convergence of airflows?

Weather and Climate Extremes, 2023
Severe weather often occurs in the areas where different cold-warm and dry-wet air masses converge orthogonally. The orthogonal convergence of two-adjacent air parcels can be observed from planetary-scale to synoptic-scale and meso-scale circulations ...
Weihong Qian, Jun Du, Jeremy Cheuk-Hin Leung, Weijing Li, Fangfang Wu, Banglin Zhang   +5 more
doaj   +1 more source