Blar i NILU Brage på forfatter "Limpasuvan, Varavut"
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Abrupt Change in the Lower Thermospheric Mean Meridional Circulation During Sudden Stratospheric Warmings and Its Impact on Trace Species
Orsolini, Yvan J.; Zhang, Jiarong; Limpasuvan, Varavut (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
Zhang, Z.; Limpasuvan, Varavut; Orsolini, Yvan J.; Espy, Patrick Joseph; Hibbins, Robert (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 ... -
The Composite Response of Traveling Planetary Waves in the Middle Atmosphere Surrounding Sudden Stratospheric Warmings through an Overreflection Perspective
Rhodes, Christian Todd; Limpasuvan, Varavut; Orsolini, Yvan Joseph Georges Emile G. (Peer reviewed; Journal article, 2023)Traveling planetary waves surrounding sudden stratospheric warming events can result from direct propagation from below or in situ generation. They can have significant impacts on the circulation in the mesosphere and lower ... -
Eastward-Propagating Planetary Waves Prior to the January 2009 Sudden Stratospheric Warming
Rhodes, Christian Todd; Limpasuvan, Varavut; Orsolini, Yvan J. (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 ... -
Impact of the Pacific sector sea ice loss on the sudden stratospheric warming characteristics
Zhang, Jiarong; Orsolini, Yvan J.; Limpasuvan, Varavut; Ukita, Jinro (Peer reviewed; Journal article, 2022)The atmospheric response to Arctic sea ice loss remains a subject of much debate. Most studies have focused on the sea ice retreat in the Barents-Kara Seas and its troposphere-stratosphere influence. Here, we investigate ... -
Modelling the descent of nitric oxide during the elevated stratopause event of January 2013
Orsolini, Yvan; Limpasuvan, Varavut; Pérot, Kristell; Espy, Patrick Joseph; Hibbins, Robert; Lossow, Stefan; Raaholt Larsson, Katarina; Murtagh, Donal (Journal article; Peer reviewed, 2017) -
Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming
Smith-Johnsen, Christine; Orsolini, Yvan; Stordal, Frode; Limpasuvan, Varavut; Pérot, Kristell (Journal article; Peer reviewed, 2018) -
Observations of gravity wave forcing of the mesopause region during the January 2013 major Sudden Stratospheric Warming
De Wit, Rosmarie Johanna; Hibbins, Robert; Espy, Patrick Joseph; Orsolini, Yvan; Limpasuvan, Varavut; Kinnison, Douglas E. (Journal article; Peer reviewed, 2014) -
Observations of planetary waves in the mesosphere-lower thermosphere during stratospheric warming events
Stray, Nora Henriette; Orsolini, Yvan; Espy, Patrick Joseph; Limpasuvan, Varavut; Hibbins, Robert (Journal article; Peer reviewed, 2015) -
On the composite response of the MLT to major sudden stratospheric warming events with elevated stratopause
Limpasuvan, Varavut; Orsolini, Yvan; Chandran, Amal; Garcia, Rolando R.; Smith, Anne K. (Journal article; Peer reviewed, 2016) -
SuperDARN Observations of Semidiurnal Tidal Variability in the MLT and the Response to Sudden Stratospheric Warming Events
Hibbins, Robert; Espy, Patrick Joseph; Orsolini, Yvan; Limpasuvan, Varavut; Barnes, R. J. (Journal article; Peer reviewed, 2019)Using meteor wind data from the Super Dual Auroral Radar Network (SuperDARN) in the Northern Hemisphere, we (1) demonstrate that the migrating (Sun‐synchronous) tides can be separated from the nonmigrating components in ... -
Validation of SMILES HCl profiles over a wide range from the stratosphere to the lower thermosphere
Nara, Seidai; Sato, Tomohiro O.; Yamada, Takayoshi; Fujinawa, Tamaki; Kuribayashi, Kota; Manabe, Takeshi; Froidevaux, Lucien; Livesey, Nathaniel J.; Walker, Kaley A.; Xu, Jian; Schreier, Franz; Orsolini, Yvan; Limpasuvan, Varavut; Kuno, Nario; Kasai, Yasuko (Peer reviewed; Journal article, 2020)Hydrogen chloride (HCl) is the most abundant (more than 95 %) among inorganic chlorine compounds Cly in the upper stratosphere. The HCl molecule is observed to obtain long-term quantitative estimations of the total budget ... -
WACCM simulations: Decadal winter-to-spring climate impact on middle atmosphere and troposphere from medium energy electron precipitation
Guttu, Sigmund; Orsolini, Yvan; Stordal, Frode; Limpasuvan, Varavut; Marsh, Daniel R. (Peer reviewed; Journal article, 2020)Energetic particle precipitation is one of the main processes by which the sun influences atmospheric composition and structure. The polar middle atmosphere is chemically disturbed by the precipitation-induced production ...