Results 1 to 10 of about 1,916 (171)

Effects of sudden stratospheric warming (SSW) on the lunitidal modulation of the F‐region dynamo [PDF]

Journal of Geophysical Research, 2012
The E‐region dynamo in the equatorial ionosphere changes significantly during Sudden Stratospheric Warming (SSW) events. However, little is known about the modulation of the F‐region dynamo by SSW events. During the SSW event of December 2001 the vertical current density in the daytime equatorial F‐region, as observed by the CHAMP satellite, exhibited ...
Jaeheung Park, Hermann Lühr
exaly   +4 more sources

A tropical stratopause precursor for sudden stratospheric warmings [PDF]

Scientific Reports, 2022
Dramatic meteorological phenomena in the winter polar stratosphere known as Sudden Stratospheric Warming (SSW) events are well recognized for their impacts felt across the whole atmosphere.
N. Koushik, K. Kishore Kumar, M. Pramitha   +2 more
doaj   +2 more sources

Signature of a zonally symmetric semidiurnal tide during major sudden stratospheric warmings and plausible mechanisms: a case study [PDF]

Scientific Reports
Sudden Stratospheric Warming (SSW) is a winter phenomenon initiated primarily by the enhanced stationary planetary waves (SPWs), characterized by an increase in polar stratospheric temperature by a few tens of kelvin for a few days.
G. Mitra, A. Guharay, I. Paulino
doaj   +2 more sources

Investigation of Sudden Stratospheric Warming (SSW) Events Between 1980 and 2100

Forecasting
The main objective of this work is to characterize Sudden Stratospheric Warming (SSW) conditions and their impact on local weather forecasting and climate change, using SSW definition criteria.
Simla Durmus, Deniz Demirhan, Ismail Gultepe, Onur Durmus   +3 more
doaj   +2 more sources

The effects of different sudden stratospheric warming type on the ocean: Ocean impacts of SSWs [PDF]

, 2014
There is a confirmed link between sudden stratospheric warmings (SSWs) and surface weather. Here we find significant differences in the strength of surface and ocean responses for splitting and displacement SSWs, classified using a new straightforward moment analysis technique.
O'Callaghan, Amee, Joshi, Manoj, Stevens, David, Mitchell, Daniel   +3 more
openaire   +5 more sources

Dynamic Diagnosis of Stratospheric Sudden Warming Event in the Boreal Winter of 2018 and Its Possible Impact on Weather over North America

Atmosphere, 2020
In the winter of 2018, a major stratospheric sudden warming (SSW) event occurred in the Northern Hemisphere. This study performs a dynamic diagnosis on this 2018 SSW event and analyzes its possible impact on the weather over North America.
Jincai Xie, Jinggao Hu, Haiming Xu, Shuai Liu, Huan He   +4 more
doaj   +3 more sources

Statistical Characteristics of Major Sudden Stratospheric Warming Events in CESM1-WACCM: A Comparison with the JRA55 and NCEP/NCAR Reanalyses

Atmosphere, 2019
Using the historical simulation from the CESM1-WACCM coupled model and based on the JRA55 and NCEP/NCAR reanalyses, the general statistical characteristics of the major sudden stratospheric warmings (SSWs) in this stratosphere-resolving model are ...
Can Cao, Yuan-Hao Chen, Jian Rao, Si-Ming Liu, Si-Yu Li, Mu-Han Ma, Yao-Bin Wang   +6 more
doaj   +3 more sources

Air quality and radiative impacts of downward propagating sudden stratospheric warmings (SSWs) [PDF]

Atmospheric Chemistry and Physics, 2023
Abstract. Sudden stratospheric warmings (SSWs) are abrupt disturbances to the Northern Hemisphere wintertime stratospheric polar vortex that can lead to pronounced regional changes in surface temperature and precipitation. SSWs also strongly impact the distribution of chemical constituents within the stratosphere, but the implications of these changes ...
R. S. Williams, R. S. Williams, M. I. Hegglin, M. I. Hegglin, P. Jöckel, H. Garny, K. P. Shine   +6 more
openaire   +8 more sources

The Sudden Stratospheric Warming Events in the Antarctic in 2024

Geophysical Research Letters
In July and August 2024, two consecutive stratospheric sudden warming (SSW) events (termed SW07 and SW08) occurred over Antarctic, both featuring a rapid 17°C temperature rise at 10 hPa and significant stratospheric polar vortex (SPV) deceleration.
Yucheng Zi, Zhenxia Long, Jinyu Sheng, Gaopeng Lu, Will Perrie, Ziniu Xiao   +5 more
doaj   +2 more sources

Possible Causes of the Occurrence of a Rare Antarctic Sudden Stratospheric Warming in 2019

Atmosphere, 2022
A minor Antarctic sudden stratospheric warming (SSW) with the strongest circulation changes since the first major SSW over the Antarctic was recorded in 2002 occurred in early September 2019.
Chenming Ma, Pengkun Yang, Xin Tan, Ming Bao   +3 more
doaj   +1 more source