Browsing Institutt for fysikk by Journals "Journal of Geophysical Research (JGR): Atmospheres"
Now showing items 1-5 of 5
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Abrupt Change in the Lower Thermospheric Mean Meridional Circulation During Sudden Stratospheric Warmings and Its Impact on Trace Species
(Peer reviewed; Journal article, 2022)Based on the hourly output from the 2000–2014 simulations of the National Center for Atmospheric Research's vertically extended version of the Whole Atmosphere Community Climate Model in specified dynamics configuration, ... -
Climatological Westward‐Propagating Semidiurnal Tides and Their Composite Response to Sudden Stratospheric Warmings in SuperDARN and SD‐WACCM‐X
(Peer reviewed; Journal article, 2021)Using the Super Dual Auroral Radar Network observations (clustered around 60°N) and NCAR CESM2.0 extended Whole Atmosphere Community Climate Model nudged with reanalyzes, we examine the climatology of semidiurnal tides in ... -
Eastward-Propagating Planetary Waves Prior to the January 2009 Sudden Stratospheric Warming
(Peer reviewed; Journal article, 2021)Eastward-propagating planetary waves (EPWs) were investigated prior to the boreal January 2009 major sudden stratospheric warming (SSW) event simulated by the National Center for Atmospheric Research's Whole Atmosphere ... -
Probing Gravity Waves in the Middle Atmosphere Using Infrasound From Explosions
(Peer reviewed; Journal article, 2023)This study uses low-frequency, inaudible acoustic waves (infrasound) to probe wind and temperature fluctuations associated with breaking gravity waves (GWs) in the middle atmosphere. Building on an approach introduced by ... -
Transport of Nitric Oxide Via Lagrangian Coherent Structures Into the Top of the Polar Vortex
(Peer reviewed; Journal article, 2021)The energetic particle precipitation (EPP) indirect effect (IE) refers to the downward transport of reactive odd nitrogen (NOx = NO + NO2) produced by EPP (EPP-NOx) from the polar winter mesosphere and lower thermosphere ...