Vis enkel innførsel

dc.contributor.authorChau, Jorge L.
dc.contributor.authorPoblet, Facundo L.
dc.contributor.authorLiu, Hanli
dc.contributor.authorLiu, Alan
dc.contributor.authorGulbrandsen, Njål
dc.contributor.authorJacobi, Christoph
dc.contributor.authorRodriguez, Rodolfo R.
dc.contributor.authorScipion, Danny
dc.contributor.authorTsutsumi, Masaki
dc.date.accessioned2024-11-07T14:27:37Z
dc.date.available2024-11-07T14:27:37Z
dc.date.issued2024-08-06
dc.description.abstractUtilizing multistatic specular meteor radar (MSMR) observations, this study delves into global aspects of wind perturbations in the mesosphere and lower thermosphere (MLT) from the unprecedented 2022 eruption of the Hunga Tonga-Hunga Ha'apai (HTHH) submarine volcano. The combination of MSMR observations from different viewing angles over South America and Europe, and the decomposition of the horizontal wind in components along and transversal to the HTHH eruption's epicenter direction allow an unambiguous detection and identification of MLT perturbations related to the eruption. The performance of this decomposition is evaluated using Whole Atmosphere Community Climate Model with thermosphere/ionosphere extension (WACCM-X) simulations of the event. The approach shows that indeed the HTHH eruption signals are clearly identified, and other signals can be easily discarded. The winds in this decomposition display dominant Eastward soliton-like perturbations observed as far as 25,000 km from HTHH, and propagating at 242 m/s. A weaker perturbation observed only over Europe propagates faster (but slower than 300 m/s) in the Westward direction. These results suggest that we might be observing the so-called Pekeris mode, also consistent with the L1 pseudomode, reproduced by WACCM-X simulations at MLT altitudes. They also rule out the previous hypothesis connecting the observations in South America to the Tsunami associated with the eruption because these perturbations are observed over Europe as well. Despite the progress, the L0 pseudomode in the MLT reproduced by WACCM-X remains elusive to observations.en_US
dc.identifier.citationChau, Poblet, Liu, Liu, Gulbrandsen, Jacobi, Rodriguez, Scipion, Tsutsumi. Mesosphere and Lower Thermosphere Wind Perturbations Due To the 2022 Hunga Tonga-Hunga Ha'apai Eruption as Observed by Multistatic Specular Meteor Radars. Radio Science. 2024;59(8)en_US
dc.identifier.cristinIDFRIDAID 2287073
dc.identifier.doi10.1029/2024RS008013
dc.identifier.issn0048-6604
dc.identifier.issn1944-799X
dc.identifier.urihttps://hdl.handle.net/10037/35538
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalRadio Science
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0en_US
dc.rightsAttribution-NonCommercial 4.0 International (CC BY-NC 4.0)en_US
dc.titleMesosphere and Lower Thermosphere Wind Perturbations Due To the 2022 Hunga Tonga-Hunga Ha'apai Eruption as Observed by Multistatic Specular Meteor Radarsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)