Browsing by Author "Poblet, Facundo L."

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    • Extreme Horizontal Wind Perturbations in the Mesosphere and Lower Thermosphere Over South America Associated With the 2022 Hunga Eruption 

      Poblet, Facundo L.; Chau, Jorge L.; Conte, J. Federico; Vierinen, Juha; Suclupe, Jose; Liu, Alan; Rodriguez, Rodolfo R. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-13)
      On 15 January 2022, the Hunga volcano produced a massive explosion that generated perturbations in the entire atmosphere. Nonetheless, signatures in the mesosphere and lower thermosphere (MLT) have been challenging to identify. We report MLT horizontal wind perturbations using three multistatic specular meteor radars on the west side of South America (spanning more than 3,000 km). The most ...

    • Horizontal Correlation Functions of Wind Fluctuations in the Mesosphere and Lower Thermosphere 

      Poblet, Facundo L.; Vierinen, Juha; Avsarkisov, Victor; Conte, J. Federico; Charuvil Asokan, Harikrishnan; Jacobi, Christoph; Chau, Jorge L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-01)
      Measurements of kinetic energy in vortical and divergent fluctuations in the mesosphere and lower thermosphere can be used to study stratified turbulence (ST) and gravity waves. This can be done using horizontal correlation functions of the fluctuating component of velocity. This study introduces a novel method for estimating these correlation functions using radars that observe Doppler shifts ...