Results 71 to 80 of about 8,237 (222)

Large Scale Winter Time Disturbances in Meteor Winds over Central and Eastern Europe [PDF]

, 1984
Daily zonal wind data of the four pre-MAP-winters 1978/79 to 1981/82 obtained over Central Europe and Eastern Europe by the radar meteor method were studied. Available temperature and satellite radiance data of the middle and upper stratosphere were used
Greisiger, K. M., Lysenko, I. A., Portnyagin, Y. I.   +2 more
core   +1 more source

Large Proportions of Surface Ozone and Premature Mortality Due to a Stratospheric Intrusion Event in North China

International Journal of Climatology, Volume 46, Issue 6, May 2026.
This study, by examining a typical stratospheric intrusion event that occurred in North China from 30 to 31 July 2021, found that the event led to a sharp increase in near‐surface ozone concentrations by 23 ppbv within 36 h, accounting for 40% of the total observed ozone levels, with localised peaks exceeding 30 ppbv.
Yinghan Sun, Zhicong Yin, Yijia Zhang
wiley   +1 more source

Impact of Sudden Stratospheric Warmings on the Stratosphere-to-Troposphere Transport of Ozone

Geophysical Research Letters
AbstractSudden stratospheric warmings (SSWs) can significantly impact tropospheric weather systems. Previous studies suggest that SSWs may also influence stratosphere‐to‐troposphere transport (STT), but their spatial and temporal distribution and mechanisms are not fully understood.
Jaewon Lee, Amy H. Butler, John R. Albers, Yutian Wu, Simon H. Lee   +4 more
openaire   +4 more sources

Laboratory Characterization of Cryogenic Frost‐Point Hygrometers Using an Upper Air Simulator

Meteorological Applications, Volume 33, Issue 3, May/June 2026.
Cryogenic frost‐point hygrometers (CFHs) are widely used to accurately measure water vapor pressure in the upper atmosphere. The performance of CFHs has been thoroughly evaluated using an Upper Air Simulator (UAS), a controlled laboratory system designed to generate and regulate frost‐point levels across a range of temperatures.
Sang‐Wook Lee, Seonwoong Kim, Sunghun Kim, Young‐Suk Lee, Yong‐Gyoo Kim   +4 more
wiley   +1 more source

Sensitivity of Sudden Stratospheric Warmings to Previous Stratospheric Conditions

Journal of the Atmospheric Sciences, 2017
AbstractThe Whole Atmosphere Community Climate Model, version 4 (WACCM4), is used to investigate the influence of stratospheric conditions on the development of sudden stratospheric warmings (SSWs). To this end, targeted experiments are performed on selected modeled SSW events.
Alvaro de la Cámara, John R. Albers, Thomas Birner, Rolando R. Garcia, Peter Hitchcock, Douglas E. Kinnison, Anne K. Smith   +6 more
openaire   +1 more source

Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons

Advances in Meteorology, 2015
Fifty-two Stratospheric sudden warming (SSW) events that occurred from 1957 to 2002 were analyzed based on the 40-year European Centre for Medium-Range Weather Forecasts Reanalysis dataset.
Quanliang Chen, Luyang Xu, Hongke Cai
doaj   +1 more source

Comparison of stratospheric evolution during the major sudden stratospheric warming events in 2018 and 2019

Earth and Planetary Physics, 2020
Using Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) data in the northern hemisphere at the 10 hPa level, we compared the stratospheric evolution of temperature and geopotential height during two major sudden ...
Zheng Ma, Yun Gong, ShaoDong Zhang, JiaHui Luo, QiHou Zhou, ChunMing Huang, KaiMing Huang   +6 more
doaj   +1 more source

Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming

Scientific Reports, 2021
This study examines the ionosphere response to gravitational forces of the lunar phase and dynamical disturbances of the stratospheric sudden warmings (SSWs).
Tsung-Yu Wu, Jann-Yenq Liu, Loren C. Chang, Chien‐Hung Lin, Yi-Chung Chiu   +4 more
doaj   +1 more source

Abnormal Circulation Changes in the Winter Stratosphere, Detected Through Variations of D Region Ionospheric Absorption [PDF]

, 1984
A method to detect stratospheric warmings using ionospheric absorption records obtained by an Absorption Meter (method A3) is introduced. The activity of the stratospheric circulation and the D region ionospheric absorption as well as other atmospheric ...
Delamorena, B. A.
core   +1 more source

Climatic Higher‐Order Balanced Winds Beyond Geostrophic and Gradient Wind Fields

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We present a novel approach to derive three‐dimensional Climatic Higher‐Order Balanced (CHOB) wind fields from thermodynamic state variables in the free troposphere and stratosphere. The CHOB method is developed for monthly synoptic‐scale wind field estimation, utilizing commonly used balanced winds (geostrophic and gradient wind) enhanced by ...
I. Nimac, J. Unegg, J. Danzer
wiley   +1 more source